CONFIGURING X
===========================
The LiveCD attempts to configure X for your video card automatically. The
process may fail if you have more than one video card, if your video card
doesn't support 24-bit color depth, or if your monitor is not Plug-n-Play
compatible (in other words, doesn't tell its characteristics to Xorg via DDC).
Also, in the following cases, the autodetection process is known to suggest
a non-working driver even for 2D graphics:
* ATI Radeon X1000 or higher (needs "vesa" or proprietary "fglrx" driver)
* Any NVIDIA card with the monitor connected to the DVI output (needs
"vesa" or proprietary "nvidia" driver).
In such cases, you have to edit the /etc/X11/xorg.conf file manually, using
vim, joe or nano.
1) In Section "Device", specify the driver for your video card, e.g.:
Section "Device"
Identifier "Generic Video Card"
Driver "ati"
EndSection
Installers of proprietary video drivers are available in /lfs-sources as *.run
files for the x86 architecture and 32-bit kernels only.
IMPORTANT: in order to avoid wasting RAM by the device mapper,
change the current directory to /dev/shm before installing these drivers.
2) In Section "Monitor", specify the allowed frequency ranges for your
monitor. If unsure, consult the manual that came with your monitor. If
such information is not there, but you know a working resolution and refresh
rate, run the "gtf" command. E.g., if your monitor can handle 1280x1024@85Hz:
$ gtf 1280 1024 85
Note: you must specify the refresh rate of 60 Hz for LCD monitors.
Then look at the output:
# 1280x1024 @ 85.00 Hz (GTF) hsync: 91.38 kHz; pclk: 159.36 MHz
Modeline "1280x1024_85.00" 159.36 1280 1376 1512 1744 1024 1025 1028 1075 -HSync +Vsync
Put the synchronization ranges that contain the printed values. For the above
example, this means that the following information should be added in the
"Monitor" section:
Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
HorizSync 30-92 # because gtf said "hsync: 91.38 kHz"
VertRefresh 56-86 # because a 85 Hz mode has been requested
# the Modeline may also be pasted here
EndSection
3) In the Section "Screen", change the DefaultDepth and add the "Modes"
line to SubSection "Display" with the proper color depth. If you added custom
Modelines, you have to specify them exactly as defined, i.e. "1280x1024_85.00"
in the example above. The built-in Modelines have names similar to "1024x768",
without explicit specification of the refresh rate.
When you are finished editing /etc/X11/xorg.conf, run startx.
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