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1<?xml version='1.0' encoding='UTF-8'?> 1<?xml version='1.0' encoding='UTF-8'?>
2<!DOCTYPE guide SYSTEM "/dtd/guide.dtd"> 2<!DOCTYPE guide SYSTEM "/dtd/guide.dtd">
3<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/xorg-config.xml,v 1.28 2009/01/26 08:08:22 nightmorph Exp $ --> 3<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/xorg-config.xml,v 1.50 2012/07/24 12:12:51 swift Exp $ -->
4 4
5<guide link="/doc/en/xorg-config.xml"> 5<guide>
6<title>The X Server Configuration HOWTO</title> 6<title>The X Server Configuration HOWTO</title>
7 7
8<author title="Author"> 8<author title="Author">
9 <mail link="swift@gentoo.org">Sven Vermeulen</mail> 9 <mail link="swift"/>
10</author> 10</author>
11<author title="Editor"> 11<author title="Author">
12 <mail link="nightmorph"/> 12 <mail link="nightmorph"/>
13</author> 13</author>
14 14
15<abstract> 15<abstract>
16Xorg is the X Window server which allows users to have a graphical 16Xorg is the X Window server which allows users to have a graphical
20 20
21<!-- The content of this document is licensed under the CC-BY-SA license --> 21<!-- The content of this document is licensed under the CC-BY-SA license -->
22<!-- See http://creativecommons.org/licenses/by-sa/2.5 --> 22<!-- See http://creativecommons.org/licenses/by-sa/2.5 -->
23<license/> 23<license/>
24 24
25<version>1.19</version> 25<version>12</version>
26<date>2009-01-26</date> 26<date>2012-07-24</date>
27 27
28<chapter> 28<chapter>
29<title>What is the X Window Server?</title> 29<title>What is the X Window Server?</title>
30<section> 30<section>
31<title>Graphical vs Command-Line</title> 31<title>Graphical vs Command-Line</title>
32<body> 32<body>
33 33
34<p> 34<p>
35The average user may be frightened at the thought of having to type in commands. 35The average user may be frightened at the thought of having to type in commands.
36Why wouldn't he be able to point and click his way through the freedom provided 36Why wouldn't he be able to point and click his way through the freedom provided
37by Gentoo (and Linux in general)? Well, *big smile*, of course you are able to 37by Gentoo (and Linux in general)? Well, of course you are able to
38do this. :-) Linux offers a wide variety of flashy user interfaces and 38do this! Linux offers a wide variety of flashy user interfaces and
39environments which you can install on top of your existing installation. 39environments which you can install on top of your existing installation.
40</p> 40</p>
41 41
42<p> 42<p>
43This is one of the biggest surprises new users come across: a graphical user 43This is one of the biggest surprises new users come across: a graphical user
89<title>Installing Xorg</title> 89<title>Installing Xorg</title>
90<section> 90<section>
91<body> 91<body>
92 92
93<p> 93<p>
94Before installing Xorg you have to configure two important variables in the 94Before you can install Xorg, you need to prepare your system for it. First,
95<path>/etc/make.conf</path> file. 95we'll set up the kernel to support input devices and video cards. Then we'll
96</p> 96prepare <path>/etc/portage/make.conf</path> so that the right drivers and Xorg packages
97 97are built and installed.
98<p> 98</p>
99
100</body>
101</section>
102<section>
103<title>Input driver support</title>
104<body>
105
106<p>
107By default, Xorg uses <c>evdev</c>, a generic input driver. You'll need to
108activate support for <c>evdev</c> by making a change to your kernel
109configuration. Read the <uri link="/doc/en/kernel-config.xml">Kernel
110Configuration Guide</uri> if you don't know how to setup your kernel.
111</p>
112
113<pre caption="Enabling evdev in the kernel">
114Device Drivers ---&gt;
115 Input device support ---&gt;
116 &lt;*&gt; Event interface
117</pre>
118
119</body>
120</section>
121<section>
122<title>Kernel modesetting</title>
123<body>
124
125<p>
126Modern open-source video drivers rely on kernel modesetting (KMS). KMS provides
127an improved graphical boot with less flickering, faster user switching, a
128built-in framebuffer console, seamless switching from the console to Xorg, and
129other features. KMS conflicts with legacy framebuffer drivers, which must remain
130<b>disabled</b> in your kernel configuration.
131</p>
132
133<p>
134First, prepare your kernel for KMS. You need to do this step regardless of which
135Xorg video driver you're using.
136</p>
137
138<pre caption="Configuring framebuffers">
139Device Drivers ---&gt;
140 Graphics support ---&gt;
141 Support for frame buffer devices ---&gt;
142 <comment>(Disable all drivers, including VGA, Intel, nVidia, and ATI)</comment>
143
144 <comment>(Further down, enable basic console support. KMS uses this.)</comment>
145 Console display driver support ---&gt;
146 &lt;*&gt; Framebuffer Console Support
147</pre>
148
149<p>
150Next, configure your kernel to use the proper KMS driver for your video card.
151Intel, nVidia, and AMD/ATI are the most common cards, so follow code listing for
152your card below.
153</p>
154
155<p>
156For Intel cards:
157</p>
158
159<pre caption="Intel settings">
160Device Drivers ---&gt;
161 Graphics support ---&gt;
162 /dev/agpgart (AGP Support) ---&gt;
163 &lt;*&gt; Intel 440LX/BX/GX, I8xx and E7x05 chipset support
164 Direct Rendering Manager (XFree86 4.1.0 and higher DRI support) ---&gt;
165 &lt;*&gt; Intel 8xx/9xx/G3x/G4x/HD Graphics
166 [*] Enable modesetting on intel by default
167</pre>
168
169<p>
170For nVidia cards:
171</p>
172
173<pre caption="nVidia settings">
174Device Drivers ---&gt;
175 Graphics support ---&gt;
176 Direct Rendering Manager (XFree86 4.1.0 and higher DRI support) ---&gt;
177 &lt;*&gt; Nouveau (nVidia) cards
178</pre>
179
180<p>
181For newer AMD/ATI cards (<uri link="/doc/en/ati-faq.xml">RadeonHD 2000 and
182up</uri>), you will need to emerge <c>radeon-ucode</c> or
183<c>linux-firmware</c>. Once you have installed one of these packages,
184configure your kernel as shown:
185</p>
186
187<pre caption="AMD/ATI settings">
188<comment>(Setup the kernel to use the radeon-ucode firmware)</comment>
189Device Drivers ---&gt;
190 Generic Driver Options ---&gt;
191 [*] Include in-kernel firmware blobs in kernel binary
192 <comment># RadeonHD 2000, 3000, and 4000 series cards:</comment>
193 (radeon/R600_rlc.bin radeon/R700_rlc.bin) External firmware blobs
194 <comment># RadeonHD 5000, a.k.a Evergreen:</comment>
195 (radeon/CEDAR_me.bin radeon/CEDAR_pfp.bin radeon/CEDAR_rlc.bin
196 radeon/CYPRESS_me.bin radeon/CYPRESS_pfp.bin radeon/CYPRESS_rlc.bin
197 radeon/JUNIPER_me.bin radeon/JUNIPER_pfp.bin radeon/JUNIPER_rlc.bin
198 radeon/REDWOOD_me.bin radeon/REDWOOD_pfp.bin
199 radeon/REDWOOD_rlc.bin) External firmware blobs
200 <comment># Radeon HD 6000/7300 series Fusion APUs:</comment>
201 (radeon/PALM_me.bin radeon/PALM_pfp.bin radeon/SUMO2_me.bin
202 radeon/SUMO2_pfp.bin radeon/SUMO_me.bin radeon/SUMO_pfp.bin
203 radeon/SUMO_rlc.bin) External firmware blobs
204 <comment># Radeon HD 6400-7600 aka. Northern Islands:</comment>
205 (radeon/BARTS_mc.bin radeon/BARTS_me.bin radeon/BARTS_pfp.bin
206 radeon/BTC_rlc.bin radeon/CAICOS_mc.bin radeon/CAICOS_me.bin
207 radeon/CAICOS_pfp.bin radeon/CAYMAN_mc.bin radeon/CAYMAN_me.bin
208 radeon/CAYMAN_pfp.bin radeon/CAYMAN_rlc.bin radeon/TURKS_mc.bin
209 radeon/TURKS_me.bin radeon/TURKS_pfp.bin) External firmware blobs
210 <comment># Radeon HD 7500/7600 series Fusion APUs:</comment>
211 (radeon/ARUBA_me.bin radeon/ARUBA_pfp.bin radeon/ARUBA_rlc.bin)
212 External firmware blobs
213 <comment># Radeon HD 7700-7900 aka. Southern Islands:</comment>
214 (radeon/PITCAIRN_ce.bin radeon/PITCAIRN_mc.bin radeon/PITCAIRN_me.bin
215 radeon/PITCAIRN_pfp.bin radeon/PITCAIRN_rlc.bin radeon/TAHITI_ce.bin
216 radeon/TAHITI_mc.bin radeon/TAHITI_me.bin radeon/TAHITI_pfp.bin
217 radeon/TAHITI_rlc.bin radeon/VERDE_ce.bin radeon/VERDE_mc.bin
218 radeon/VERDE_me.bin radeon/VERDE_pfp.bin radeon/VERDE_rlc.bin)
219 External firmware blobs
220 <comment># all:</comment>
221 (/lib/firmware/) Firmware blobs root directory
222
223<comment>(Enable Radeon KMS support)</comment>
224Device Drivers ---&gt;
225 Graphics support ---&gt;
226 &lt;*&gt; Direct Rendering Manager ---&gt;
227 &lt;*&gt; ATI Radeon
228 [*] Enable modesetting on radeon by default
229</pre>
230
231<note>
232Old Radeon cards (X1900 series and older) don't need the <c>radeon-ucode</c>
233package or any firmware configuration. Just enable the Direct Rendering Manager
234and ATI Radeon modesetting.
235</note>
236
237<p>
238Now that you're done setting up KMS, continue with preparing
239<path>/etc/portage/make.conf</path> in the next section.
240</p>
241
242</body>
243</section>
244<section>
245<title>make.conf configuration</title>
246<body>
247
248<p>
249Now that your kernel is prepared, you have to configure two important variables
250in the <path>/etc/portage/make.conf</path> file before you can install Xorg.
251</p>
252
253<p>
99The first one is <c>VIDEO_CARDS</c>. This is used to set the video drivers that 254The first variable is <c>VIDEO_CARDS</c>. This is used to set the video drivers
100you intend to use and is usually based on the kind and brand of card you have. 255that you intend to use and is usually based on the kind of video card you have.
101The most common settings are <c>nvidia</c> for Nvidia cards or <c>fglrx</c> for 256The most common settings are <c>nouveau</c> for nVidia cards or <c>radeon</c>
102ATI Radeon cards. Those are the proprietary drivers from Nvidia and ATI 257for ATI cards. Both have actively developed, well-supported open-source
103respectively. If you would like to use the open source versions, use <c>nv</c> 258drivers.
104rather than <c>nvidia</c> in the variable, but bear in mind that using this 259</p>
105driver means no 3D acceleration at all. The free <c>radeon</c> and 260
106<c>radeonhd</c> drivers for ATI cards support 3D acceleration on older Radeons 261<note>
107but don't yet support all the features of the newer ones. <c>VIDEO_CARDS</c> may 262You may also try the proprietary drivers from nVidia and AMD/ATI, <c>nvidia</c>
108contain more than one driver, in this case list of them should be separated with 263and <c>fglrx</c> respectively. However, setting up the proprietary drivers is
264beyond the scope of this guide. Please read the <uri
265link="/doc/en/nvidia-guide.xml">Gentoo Linux nVidia Guide</uri> and <uri
266link="/doc/en/ati-faq.xml">Gentoo Linux ATI FAQ</uri>. If you don't know which
267drivers you should choose, refer to these guides for more information.
268</note>
269
270<p>
271The <c>intel</c> driver may be used for desktops or laptops with common Intel
272integrated graphics chipsets.
273</p>
274
275<note>
276<c>VIDEO_CARDS</c> may contain more than one driver, each separated with a
109spaces. 277space.
110</p> 278</note>
111 279
112<p> 280<p>
113The second variable is <c>INPUT_DEVICES</c> and is used to determine which 281The second variable is <c>INPUT_DEVICES</c> and is used to determine which
114drivers are to be built for input devices. In most cases setting it to 282drivers are to be built for input devices. In most cases setting it to
115<c>keyboard mouse</c> should work just fine. If you use alternative input 283<c>evdev</c> should work just fine. If you use alternative input
116devices, such as a Synaptics touchpad for a laptop, be sure to add it to 284devices, such as a Synaptics touchpad for a laptop, be sure to add it to
117<c>INPUT_DEVICES</c>. 285<c>INPUT_DEVICES</c>.
118</p> 286</p>
119 287
120<p> 288<p>
121Now you should decide which drivers you will use and add necessary settings to 289Now you should decide which drivers you will use and add necessary settings to
122the <path>/etc/make.conf</path> file: 290the <path>/etc/portage/make.conf</path> file:
123</p> 291</p>
124 292
125<pre caption="Sample make.conf entries"> 293<pre caption="Sample make.conf entries">
126<comment>(For mouse and keyboard support)</comment> 294<comment>(For mouse, keyboard, and Synaptics touchpad support)</comment>
127INPUT_DEVICES="keyboard mouse" 295INPUT_DEVICES="evdev synaptics"
128<comment>(For Nvidia cards)</comment> 296<comment>(For nVidia cards)</comment>
129VIDEO_CARDS="nvidia" 297VIDEO_CARDS="nouveau"
130<comment>(OR, for ATI Radeon cards)</comment> 298<comment>(For AMD/ATI cards)</comment>
131VIDEO_CARDS="fglrx" 299VIDEO_CARDS="radeon"
132</pre> 300</pre>
133 301
134<p>
135More instructions on how to configure nVidia and ATI cards can be found in
136<uri link="/doc/en/nvidia-guide.xml">Gentoo Linux nVidia Guide</uri> and in
137<uri link="/doc/en/ati-faq.xml">Gentoo Linux ATI FAQ</uri>. If you don't know
138which drivers you should choose, refer to these guides for more information.
139</p> 302<p>
303If the suggested settings don't work for you, you should run <c>emerge -pv
304xorg-drivers</c>, check all the options available and choose those which apply to
305your system. This example is for a system with a keyboard, mouse, Synaptics
306touchpad, and a Radeon video card.
307</p>
308
309<pre caption="Displaying all the driver options available">
310# <i>emerge -pv xorg-drivers</i>
311
312These are the packages that would be merged, in order:
313
314Calculating dependencies... done!
315[ebuild R ] x11-base/xorg-drivers-1.9 INPUT_DEVICES="evdev synaptics
316-acecad -aiptek -elographics% -fpit% -joystick -keyboard -mouse -penmount -tslib
317-virtualbox -vmmouse -void -wacom"
318VIDEO_CARDS="radeon -apm -ark -ast -chips -cirrus -dummy -epson -fbdev -fglrx
319(-geode) -glint -i128 (-i740) (-impact) -intel -mach64 -mga -neomagic (-newport)
320-nouveau -nv -nvidia -r128 -rendition -s3 -s3virge -savage -siliconmotion -sis
321-sisusb (-sunbw2) (-suncg14) (-suncg3) (-suncg6) (-sunffb) (-sunleo) (-suntcx)
322-tdfx -tga -trident -tseng -v4l -vesa -via -virtualbox -vmware (-voodoo) (-xgi)"
3230 kB
324</pre>
325
326<p>
327After setting all the necessary variables you can install the Xorg package.
328</p>
329
330<pre caption="Installing Xorg">
331<comment>(Make sure udev is in your USE flags)</comment>
332# <i>echo "x11-base/xorg-server udev" >> /etc/portage/package.use</i>
333<comment>(Install Xorg)</comment>
334# <i>emerge xorg-server</i>
335</pre>
140 336
141<note> 337<note>
142If the suggested settings don't work for you, you should run <c>emerge -pv 338You could install the <c>xorg-x11</c> metapackage instead of the more
143xorg-server</c>, check all the options available and choose those which apply to 339lightweight <c>xorg-server</c>. Functionally, <c>xorg-x11</c> and
144your system. The example is for the amd64 architecture and 340<c>xorg-server</c> are the same. However, <c>xorg-x11</c> brings in many more
145<c>xorg-server-1.2</c>. 341packages that you probably don't need, such as a huge assortment of fonts in
342many different languages. They're not necessary for a working desktop.
146</note> 343</note>
147 344
148<pre caption="Displaying all the driver options available">
149# <i>emerge -pv xorg-server</i>
150
151These are the packages that would be merged, in order:
152
153Calculating dependencies... done!
154[ebuild R ] x11-base/xorg-server-1.2.0-r3 USE="dri nptl xorg (-3dfx) -debug
155-dmx -ipv6 -kdrive -minimal -sdl -xprint" INPUT_DEVICES="keyboard mouse -acecad
156-aiptek -calcomp -citron -digitaledge -dmc -dynapro -elo2300 -elographics -evdev
157-fpit -hyperpen -jamstudio -joystick -magellan -microtouch -mutouch -palmax
158-penmount -spaceorb -summa -synaptics -tek4957 -ur98 -vmmouse -void -wacom"
159VIDEO_CARDS="nvidia -apm -ark -chips -cirrus -cyrix -dummy -epson -fbdev -fglrx
160-glint -i128 (-i740) -i810 (-impact) (-imstt) -mach64 -mga -neomagic (-newport)
161(-nsc) -nv -r128 -radeon -rendition -s3 -s3virge -savage -siliconmotion -sis
162-sisusb (-sunbw2) (-suncg14) (-suncg3) (-suncg6) (-sunffb) (-sunleo) (-suntcx)
163-tdfx -tga -trident -tseng -v4l -vesa -vga -via -vmware -voodoo" 0 kB
164</pre>
165
166<p>
167After setting all the necessary variables you can install the Xorg package.
168</p> 345<p>
169
170<pre caption="Installing Xorg">
171# <i>emerge xorg-x11</i>
172</pre>
173
174<p>
175When the installation is finished, you might need to re-initialise some 346When the installation is finished, you will need to re-initialise some
176environment variables before you continue. Just run <c>env-update</c> followed 347environment variables before you continue:
177by <c>source /etc/profile</c> and you're all set.
178</p> 348</p>
179 349
180<pre caption="Re-initialising the environment variables"> 350<pre caption="Re-initialising the environment variables">
181# <i>env-update</i> 351# <i>env-update</i>
182# <i>source /etc/profile</i> 352# <i>source /etc/profile</i>
183</pre> 353</pre>
184 354
185</body> 355</body>
186</section> 356</section>
187</chapter> 357</chapter>
358
188<chapter> 359<chapter>
189<title>Configuring Xorg</title> 360<title>Configuring Xorg</title>
190<section> 361<section>
191<title>The xorg.conf File</title>
192<body>
193
194<p>
195The configuration file of Xorg is called <path>xorg.conf</path> and it
196resides in <path>/etc/X11</path>. The Xorg-X11 package provides an example
197configuration as <path>/etc/X11/xorg.conf.example</path> which you can use to
198create your own configuration. It is heavily commented, but if you are in need
199of more documentation regarding the syntax, don't hesitate to read the man page:
200</p>
201
202<pre caption="Reading the xorg.conf man page">
203# <i>man 5 xorg.conf</i>
204</pre>
205
206<p>
207Happy reading for those of you willing to. We surely don't so we'll continue
208with checking out how we can create the file automatically.
209</p>
210
211</body> 362<body>
212</section> 363
364<p>
365The X server is designed to work out-of-the-box, with no need to manually edit
366Xorg's configuration files. It should detect and configure devices such as
367displays, keyboards, and mice.
368</p>
369
370<p>
371You should first try <uri link="#using_startx">starting X</uri> without editing
372any configuration files. If Xorg won't start, or there's some other problem,
373then you'll need to manually configure Xorg as shown in the next section.
374</p>
375
376</body>
213<section> 377</section>
214<title>Default: Automatic Generation of xorg.conf</title>
215<body>
216
217<p>
218Xorg itself is able to guess most parameters for you. In most cases, you
219will only have to change some lines to get the resolution you want up and
220running. If you are interested in more in-depth tweaking, be sure to check the
221resources at the end of this chapter. But first, let us generate a (hopefully
222working) Xorg configuration file.
223</p>
224
225<pre caption="Generating an xorg.conf file">
226# <i>Xorg -configure</i>
227</pre>
228
229<p>
230Be sure to read the last lines printed on your screen when Xorg has finished
231probing your hardware. If it tells you it failed at some point, you're forced to
232manually write an <path>xorg.conf</path> file. Assuming that it didn't fail, it
233will have told you that it has written <path>/root/xorg.conf.new</path> ready
234for you to test. So let's test. :)
235</p>
236
237<pre caption="Testing the xorg.conf.new file">
238# <i>X -config /root/xorg.conf.new</i>
239</pre>
240
241<p>
242If all goes well, you should see a simple black and white pattern. Verify if
243your mouse works correctly and if the resolution is good. If you received errors
244about "/dev/mouse", try changing your mouse device to <c>/dev/input/mice</c> in
245the "InputDevice" section of <path>xorg.conf</path>. You might not be able to
246deduce the exact resolution, but you should be able to see if it's too low. You
247can exit any time by pressing Ctrl-Alt-Backspace.
248</p>
249
250</body>
251</section> 378<section>
252<section> 379<title>The xorg.conf.d directory</title>
253<title>Alternative: Semi-Automatic Generation of xorg.conf</title>
254<body>
255
256<p>
257Xorg provides a tool called <c>xorgconfig</c> which will ask you for various
258information regarding your system (graphical adapter, keyboard, ...). Based on
259your input it will create a <path>xorg.conf</path> file.
260</p>
261
262<pre caption="Semi-Automatic Generation of xorg.conf">
263# <i>xorgconfig</i>
264</pre>
265
266<p>
267Another tool, also provided by Xorg, is <c>xorgcfg</c>, which will first
268attempt to run <c>Xorg -configure</c> and then start the X server for more
269final tweaking.
270</p>
271
272<pre caption="Using xorgcfg">
273# <i>xorgcfg</i>
274<comment>(In case X crashes or the configuration fails, try:)</comment>
275# <i>xorgcfg -textmode</i>
276</pre>
277
278</body> 380<body>
279</section>
280<section>
281<title>Copying over xorg.conf</title>
282<body>
283 381
284<p> 382<note>
285Let us copy over the <path>xorg.conf.new</path> to 383Configuring files in <path>xorg.conf.d</path> should be seen as a "last resort"
286<path>/etc/X11/xorg.conf</path> now, so we won't have to continuously run 384option. It really desirable to run without any special configuration if
287<c>X -config</c> -- typing just <c>X</c> or <c>startx</c> is easier. :) 385possible. If you still can't get a working configuration, then read on.
386</note>
387
288</p> 388<p>
289 389The configuration files of Xorg are stored in
290<pre caption="Copying over xorg.conf"> 390<path>/etc/X11/xorg.conf.d/</path>. Each file is given a unique name and ends in
291# <i>cp /root/xorg.conf.new /etc/X11/xorg.conf</i> 391<path>.conf</path>. If the filenames start with a number, then Xorg will read
392the files in numeric order. <path>10-evdev.conf</path> will be read before
393<path>20-synaptics.conf</path>, and so on. You don't <e>have</e> to give them
394numbers, but it may help you organize them.
292</pre> 395</p>
396
397<note>
398Xorg provides example configurations in
399<path>/usr/share/doc/xorg-server-${version}/xorg.conf.example.bz2</path>. You
400can use these to create your own configuration files in
401<path>/etc/X11/xorg.conf.d/</path>. The examples are heavily commented, but if
402you are in need of more documentation regarding the syntax, read <c>man
403xorg.conf</c>. Other examples can be found in the <uri
404link="#resources">Resources</uri> chapter at the end of this guide.
405</note>
293 406
294</body> 407</body>
295</section> 408</section>
296<section id="using_startx"> 409<section id="using_startx">
297<title>Using startx</title> 410<title>Using startx</title>
298<body> 411<body>
299 412
300<p> 413<p>
301Now try <c>startx</c> to start up your X server. <c>startx</c> is a script 414Now try <c>startx</c> to start up your X server. <c>startx</c> is a script
302that executes an <e>X session</e>, that is, it starts the X servers and some 415that executes an <e>X session</e>; that is, it starts the X server and some
303graphical applications on top of it. It decides which applications to run 416graphical applications on top of it. It decides which applications to run
304using the following logic: 417using the following logic:
305</p> 418</p>
306 419
307<ul> 420<ul>
308 <li> 421 <li>
310 execute the commands listed there. 423 execute the commands listed there.
311 </li> 424 </li>
312 <li> 425 <li>
313 Otherwise, it will read the value of the XSESSION variable and will execute 426 Otherwise, it will read the value of the XSESSION variable and will execute
314 one of the sessions available in <path>/etc/X11/Sessions/</path> 427 one of the sessions available in <path>/etc/X11/Sessions/</path>
315 accordingly (you can set the value of XSESSION in <path>/etc/rc.conf</path> 428 accordingly. You can set the value of XSESSION in
316 to make it a default for all the users on the system). 429 <path>/etc/env.d/90xsession</path> to make it a default for all the users
317 </li> 430 on the system. For example, as root, run <c>echo XSESSION="Xfce4" >
318 <li> 431 /etc/env.d/90xsession</c>. This will create the <path>90xsession</path> file
319 If all of the above fail, it will fall back to a simple window manager, 432 and set the default X session to <uri
320 usually <c>twm</c>. 433 link="/doc/en/xfce-config.xml">Xfce</uri>. Remember to run <c>env-update</c>
434 after changing <path>90xsession</path>.
321 </li> 435 </li>
322</ul> 436</ul>
323 437
324<pre caption="Starting X"> 438<pre caption="Starting X">
325# <i>startx</i> 439$ <i>startx</i>
326</pre> 440</pre>
327 441
442<p>
443If you haven't yet installed a window manager, all you'll see is a black screen.
444Since this can also be a sign that something's wrong, you may want to emerge
445<c>twm</c> and <c>xterm</c> <e>only to test X</e>.
328<p> 446</p>
329If you see an ugly, loathsome, repulsive, deformed window manager, that's 447
330<c>twm</c>. To finish the twm session, type in <c>exit</c> or Ctrl-D in the 448<p>
331upcoming xterms. You can also kill the X session using the Ctrl-Alt-Backspace 449Once those two programs are installed, run <c>startx</c> again. A few
332combination. This will however make X exit disgracefully -- something that you 450<c>xterm</c> windows should appear, making it easier to verify that X is working
333might not always want. It doesn't hurt though. :) 451correctly. Once you're satisfied with the results, run <c>emerge --unmerge twm
452xterm</c> as root to get rid of the testing packages. You won't need them once
453you've setup a proper desktop environment.
334</p> 454</p>
335 455
336</body> 456</body>
337</section> 457</section>
338</chapter> 458</chapter>
459
339<chapter> 460<chapter>
340<title>Tweaking xorg.conf</title> 461<title>Tweaking X settings</title>
341<section> 462<section>
342<title>Setting your Resolution</title> 463<title>Setting your Resolution</title>
343<body> 464<body>
344 465
345<p> 466<p>
346If you feel that the screen resolution is wrong, you will need to check two 467If you feel that the screen resolution is wrong, you will need to check two
347sections in your configuration. First of all, you have the <e>Screen</e> section 468sections in your <path>xorg.conf.d</path> configuration. First of all, you have
348which lists the resolutions, if any that your X server will run at. By 469the <e>Screen</e> section which lists the resolutions that your X server will
349default, this section might not list any resolutions at all. If this is the 470run at. This section might not list any resolutions at all. If this is the case,
350case, Xorg will estimate the resolutions based on the information in the 471Xorg will estimate the resolutions based on the information in the second
351second section, <e>Monitor</e>. 472section, <e>Monitor</e>.
352</p>
353
354<p> 473</p>
355What happens is that Xorg checks the settings of <c>HorizSync</c> and 474
356<c>VertRefresh</c> in the <e>Monitor</e> section to compute valid resolutions.
357For now, leave these settings as-is. Only when the changes to the <e>Screen</e>
358section (which we will describe in a minute) don't work, then you will need to
359look up the specs for your monitor and fill in the correct values. You can also
360use a tool that searches for your monitor's specs, such as
361<c>sys-apps/ddcxinfo-knoppix</c>.
362</p> 475<p>
363
364<warn>
365Do <b>not</b> "just" change the values of these two monitor related variables
366without consulting the technical specifications of your monitor. Setting
367incorrect values lead to out-of-sync errors at best and smoked up screens at
368worst.
369</warn>
370
371<p>
372Now let us change the resolutions. In the next example from 476Now let us change the resolution. In the next example from
373<path>/etc/X11/xorg.conf</path> we add the <c>Modes</c> lines and the 477<path>/etc/X11/xorg.conf.d/40-monitor.conf</path> we add the
374<c>DefaultDepth</c> so that our X server starts with 24 bits at 1024x768 by 478<c>PreferredMode</c> line so that our X server starts at 1440x900 by default.
375default. Don't mind the given strings -- they are examples and will most likely 479The <c>Option</c> in the <c>Device</c> section must match the name of your
376differ from the settings on your system. 480monitor (<c>DVI-0</c>), which can be obtained by running <c>xrandr</c>. You'll
481need to <c>emerge xrandr</c> just long enough to get this information. The
482argument after the monitor name (in the <c>Device</c> section) must match the
483<c>Identifier</c> in the <c>Monitor</c> section.
377</p> 484</p>
378 485
379<pre caption="Changing the Screen section in /etc/X11/xorg.conf"> 486<pre caption="Changing the Monitor section">
487# <i>nano -w /etc/X11/xorg.conf.d/40-monitor.conf</i>
488
380Section "Screen" 489Section "Device"
381 Identifier "Default Screen" 490 Identifier "RadeonHD 4550"
382 Device "S3 Inc. ProSavage KN133 [Twister K]" 491 Option "Monitor-DVI-0" "DVI screen"
383 Monitor "Generic Monitor"
384 <i>DefaultDepth 24</i>
385 <comment># Skipping some text to improve readability</comment>
386 SubSection "Display"
387 Depth 24
388 <i>Modes "1024x768"</i>
389 EndSubSection
390EndSection 492EndSection
391</pre> 493Section "Monitor"
392 494 Identifier "DVI screen"
393<p> 495 Option "PreferredMode" "1440x900"
394Run X (<c>startx</c>) to discover it uses the resolution you want. :)
395</p>
396
397</body>
398</section>
399<section>
400<title>Configuring your Keyboard</title>
401<body>
402
403<p>
404To setup X to use an international keyboard, search for the <e>InputDevice</e>
405section that configures the keyboard and add the <c>XkbLayout</c> option to
406point to the keyboard layout you want. As an example, we show you how to apply
407for the Belgian layout. Just substitute the country-keycode with yours:
408</p>
409
410<pre caption="Changing the keyboard layout">
411Section "InputDevice"
412 Identifier "Generic Keyboard"
413 Driver "keyboard"
414 Option "CoreKeyboard"
415 Option "XkbRules" "xorg"
416 Option "XkbModel" "pc105"
417 <i>Option "XkbLayout" "be"</i>
418EndSection 496EndSection
419</pre> 497</pre>
420 498
499<p>
500Run X (<c>startx</c>) to discover it uses the resolution you want.
501</p>
502
421</body> 503</body>
422</section>
423<section> 504</section>
424<title>Configuring your Mouse</title> 505<section>
506<title>Multiple monitors</title>
425<body> 507<body>
426 508
427<p>
428If your mouse isn't working, you will first need to find out if it is detected
429by the kernel at all. Mice are (device-wise) seen as
430<path>/dev/input/mouse0</path> (or <path>/dev/input/mice</path> if you want to
431use several mice). In some cases <path>/dev/psaux</path> is used. In either
432case you can check if the devices do represent
433your mouse by checking the output of those files when you move your mouse. You
434will usually see some junk on your screen. To end the session press
435<c>Ctrl-C</c>.
436</p> 509<p>
437 510You can configure more than one monitor in <path>/etc/X11/xorg.conf.d/</path>.
438<pre caption="Checking the device files"> 511All you have to do is give each monitor an identifer, then list its physical
439# <i>cat /dev/input/mouse0</i> 512position, such as "RightOf" or "Above" another monitor. The following example
440<comment>(Don't forget to press Ctrl-C to end this)</comment> 513shows how to configure a DVI and a VGA monitor, with the VGA monitor as the
441</pre> 514right-hand screen:
442
443<p> 515</p>
444If your mouse isn't detected, verify if all the necessary modules are loaded.
445</p>
446 516
447<p> 517<pre caption="Configuring multiple monitors">
448If your mouse is detected, fill in the device in the appropriate 518# <i>nano -w /etc/X11/xorg.conf.d/40-monitor.conf</i>
449<e>InputDevice</e> section. In the next example you'll see we also set two other
450options: <c>Protocol</c> (which lists the mouse protocol to be used -- most
451users will use PS/2 or IMPS/2) and <c>ZAxisMapping</c> (which allows for the
452mousewheel (if applicable) to be used).
453</p>
454 519
455<pre caption="Changing the mouse settings in Xorg">
456Section "InputDevice" 520Section "Device"
457 Identifier "TouchPad Mouse" 521 Identifier "RadeonHD 4550"
458 Driver "mouse" 522 Option "Monitor-DVI-0" "DVI screen"
459 Option "CorePointer" 523 Option "Monitor-VGA-0" "VGA screen"
460 <i>Option "Device" "/dev/input/mouse0"</i>
461 <i>Option "Protocol" "IMPS/2"</i>
462 <i>Option "ZAxisMapping" "4 5"</i>
463EndSection 524EndSection
525Section "Monitor"
526 Identifier "DVI screen"
527EndSection
528Section "Monitor"
529 Identifier "VGA screen"
530 Option "RightOf" "DVI screen"
531EndSection
464</pre> 532</pre>
465 533
534</body>
535</section>
536<section>
537<title>Configuring your keyboard</title>
538<body>
539
540<p>
541To setup X to use an international keyboard, you just have to create the
542appropriate config file in <path>/etc/X11/xorg.conf.d/</path>. This example
543features a Czech keyboard layout:
466<p> 544</p>
545
546<pre caption="Using an international keyboard">
547# <i>nano -w /etc/X11/xorg.conf.d/30-keyboard.conf</i>
548
549Section "InputClass"
550 Identifier "keyboard-all"
551 Driver "evdev"
552 Option "XkbLayout" "us,cz"
553 Option "XkbModel" "logitech_g15"
554 Option "XkbRules" "xorg"
555 Option "XkbOptions" "grp:alt_shift_toggle,grp:switch,grp_led:scroll,compose:rwin,terminate:ctrl_alt_bksp"
556 Option "XkbVariant" ",qwerty"
557 MatchIsKeyboard "on"
558EndSection
559</pre>
560
561<p>
562The "terminate" command (<c>terminate:ctrl_alt_bksp</c>) lets you kill the X
563session by using the Ctrl-Alt-Backspace key combination. This will, however,
564make X exit disgracefully -- something that you might not always want. It can be
565useful when programs have frozen your display entirely, or when you're
566configuring and tweaking your Xorg environment. Be careful when killing your
567desktop with this key combination -- most programs really don't like it when you
568end them this way, and you may lose some (or all) of what you were working on.
569</p>
570
571</body>
572</section>
573<section>
574<title>Finishing up</title>
575<body>
576
577<p>
467Run <c>startx</c> and be happy about the result. :) Congratulations, you now 578Run <c>startx</c> and be happy about the result. Congratulations, you now
468(hopefully) have a working Xorg on your system. The next step is to remove this 579(hopefully) have a working Xorg on your system. The next step is to install a
469ugly lightweight window manager and use a high-feature one (or even a desktop 580useful window manager or desktop environment such as KDE, GNOME, or Xfce, but
470environment) such as KDE or GNOME, but that's not part of this guide. :) 581that's not part of this guide. Information on installing these desktop
582environments can be found in our <uri link="/doc/en/?catid=desktop">Gentoo
583Desktop Documentation Resources</uri>.
471</p> 584</p>
472 585
473</body> 586</body>
474</section> 587</section>
475</chapter> 588</chapter>
476<chapter> 589
590<chapter id="resources">
477<title>Resources</title> 591<title>Resources</title>
478<section> 592<section>
479<title>Creating and Tweaking xorg.conf</title> 593<title>Creating and editing config files</title>
480<body> 594<body>
481 595
482<p>
483First of all, <c>man xorg.conf</c> provides a quick yet complete reference
484about the syntax used by the configuration file. Be sure to have it open on a
485terminal near you when you edit your configuration file!
486</p> 596<p>
487 597First of all, <c>man xorg.conf</c> and <c>man evdev</c> provide quick yet
598complete references about the syntax used by these configuration files. Be sure
599to have them open on a terminal when you edit your configuration files!
488<p> 600</p>
489Also, be sure to look at <path>/etc/X11/xorg.conf.example</path>; you may wish 601
490to copy this and use it as a foundation for writing your own
491<path>xorg.conf</path>.
492</p> 602<p>
493 603There are also many online resources on editing config files in
604<path>/etc/X11/</path>. We only list few of them here; be sure to <uri
605link="http://www.google.com">Google</uri> for more.
494<p> 606</p>
495You may find the X.org <uri link="http://www.x.org/wiki/FAQ">FAQ</uri> provided
496on their website, in addition to their other documentation.
497</p>
498
499<p>
500There are also many online resources on editing <path>xorg.conf</path>. We only
501list few of them here, be sure to <uri link="http://www.google.com">Google</uri>
502for more. :) As <path>xorg.conf</path> and <path>XF86Config</path> (the
503configuration file for the XFree86 project) use the
504same syntax for most configuration options and more information about
505<path>XF86Config</path> is available, we'll list those resources as well.
506</p>
507
508<ul>
509 <li>
510 <uri link="http://tldp.org/HOWTO/XFree-Local-multi-user-HOWTO/">The XFree
511 Local Multi-User HOWTO</uri>
512 </li>
513 <li>
514 <uri
515 link="http://www-106.ibm.com/developerworks/edu/os-dw-linuxxwin-i.html">An
516 Introduction to XFree 4.x</uri> by Chris Houser
517 </li>
518</ul>
519 607
520</body> 608</body>
521</section> 609</section>
522<section> 610<section>
523<title>Other resources</title> 611<title>Other resources</title>
528environments and applications can be found in the <uri 616environments and applications can be found in the <uri
529link="/doc/en/?catid=desktop">Gentoo Desktop Documentation Resources</uri> 617link="/doc/en/?catid=desktop">Gentoo Desktop Documentation Resources</uri>
530section of our documentation. 618section of our documentation.
531</p> 619</p>
532 620
621<p>
622If you're upgrading to <c>xorg-server</c> 1.9 from an earlier version, then be
623sure to read the <uri
624link="/proj/en/desktop/x/x11/xorg-server-1.9-upgrade-guide.xml">migration
625guide</uri>.
626</p>
627
628<p>
629X.org provides many <uri link="http://www.x.org/wiki/FAQ">FAQs</uri> on their
630website, in addition to their other documentation.
631</p>
632
533</body> 633</body>
534</section> 634</section>
535</chapter> 635</chapter>
536</guide> 636</guide>

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