Bug#564645: fails to obtain EDID for 1 monitor in dual monitor setup
On Mon, Jan 11, 2010 at 08:04:15AM +0100, Brice Goglin wrote: > Steve M. Robbins wrote: > > Package: xserver-xorg-video-radeon > > Version: 1:6.12.4-2 > > Severity: normal > > > > Just upgraded all packages today and rebooted into my first attempt at > > using xserver 1.7 and friends. > > > > I have an ancient Sony G400 CRT and a Syncmaster LCD attached to my card. > > I used to be able to run them in 1600x1200 and 1280x1024, respectively. > > > > Now, when X starts, the Syncmaster (DVI-1) is detected, but the Sony > > (DVI-0) is not. Note also that "get-edid | parse-edid" fails to > > obtain data from the Sony: I first worked around the problem by downgrading back to the previous version of xserver. It turns out that "get-edid" does not produce anything useful from the Sony G400 in that instance, either. Yet, xserver managed to figure out the monitor modes correctly. Was there some code in the xserver for older monitors that has gone missing? > You should be able to work around the problem with Option Modeline and > PreferredMode in xorg.conf, > or xrandr --newmode and --addmode. Today I upgraded again, and yes, that works. Thanks very much. -Steve signature.asc Description: Digital signature
Bug#564645: fails to obtain EDID for 1 monitor in dual monitor setup
Steve M. Robbins wrote:
> Package: xserver-xorg-video-radeon
> Version: 1:6.12.4-2
> Severity: normal
>
> Just upgraded all packages today and rebooted into my first attempt at
> using xserver 1.7 and friends.
>
> I have an ancient Sony G400 CRT and a Syncmaster LCD attached to my card.
> I used to be able to run them in 1600x1200 and 1280x1024, respectively.
>
> Now, when X starts, the Syncmaster (DVI-1) is detected, but the Sony
> (DVI-0) is not. Note also that "get-edid | parse-edid" fails to
> obtain data from the Sony:
>
> st...@riemann{~}xrandr
> Screen 0: minimum 320 x 200, current 2432 x 1024, maximum 3200 x 1200
> DVI-1 connected 1280x1024+1152+0 (normal left inverted right x axis y axis)
> 376mm x 301mm
>1280x1024 60.0*+ 75.0
>1280x960 60.0
>1152x864 75.0
>1024x768 75.0 70.1 60.0
>832x62474.6
>800x60072.2 75.0 60.3 56.2
>640x48075.0 72.8 66.7 59.9
>720x40070.1
> DVI-0 connected 1152x864+0+0 (normal left inverted right x axis y axis) 0mm x
> 0mm
>1360x768 59.8
>1152x864 60.0*
>1024x768 60.0
>800x60060.3
>640x48059.9
>
You should be able to work around the problem with Option Modeline and
PreferredMode in xorg.conf,
or xrandr --newmode and --addmode.
See III.5 and II.6 of http://wiki.debian.org/XStrikeForce/HowToRandR12
Brice
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