kms howto - is there one?
Kevin DeKorte
kdekorte at gmail.com
Wed Mar 17 20:56:43 UTC 2010
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On 03/17/2010 02:46 PM, Adam Williamson wrote:
> On Wed, 2010-03-17 at 16:24 -0400, Felix Miata wrote:
>> Used to be able to set vga= on cmdline, and preferred resolution for X via
>> xorg.conf. Now (with no EDID/DDC actually available to report display
>> characteristics to the KMS kernel), how does one escape from 1024x768 in X -
>> prior to starting X? I tried putting PreferredMode in xorg.conf, which failed
>> to provide my selected mode in X. I also tried video="VGA-1:1600x1200 at 60" &
>> vga=0x305 on cmdline. That gave 1600x1200 on tty[1-6], which I don't want,
>> and (again) 1024x768 in X, which also I don't want.
>
> http://wiki.debian.org/XStrikeForce/HowToRandR12
You can also try
Option "IgnoreEDID" "true" to your xorg.conf file.
Section "Device"
Identifier "Videocard0"
Driver "radeon"
Option "IgnoreEDID" "true"
EndSection
I have to use this with my KMS switch that has the wrong EDID value for
my older 19" CRT. The availability of this option may be driver dependent.
Kevin
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