On Tue, Aug 31, 2010 at 16:59:47 +0200, Thomas PIERSON wrote: > Package: xserver-xorg-video-ati > Version: 1:6.13.1-2 > Severity: normal > > Hi, > > I have an issue with 2 monitors connected on two DislpayPort output. The card > is an ATI "FirePro 2260". And only one display can works at a time. > $ lspci | grep VGA > 02:00.0 VGA compatible controller: ATI Technologies Inc RV620 [FirePro 2260] > > My issue looks like this archived bug : http://bugs.debian.org/cgi- > bin/bugreport.cgi?bug=569970 > > The symptoms are that only one display can be driven at a time. > It also talk about two DisplayPort connections. > > So, the 2 monitor are connected and activated in clone mode : > > $ xrandr > Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192 > DisplayPort-0 connected 1280x1024+0+0 (normal left inverted right x axis y > axis) 408mm x 255mm > 1680x1050 60.0 + > 1600x1200 60.0 > 1400x1050 60.0 > 1280x1024 75.0 60.0* > 1440x900 59.9 > 1280x960 60.0 > 1152x864 75.0 > 1024x768 75.1 70.1 60.0 > 832x624 74.6 > 800x600 72.2 75.0 60.3 56.2 > 640x480 72.8 75.0 66.7 60.0 > 720x400 70.1 > 640x400 70.0 > DisplayPort-1 connected 1280x1024+0+0 (normal left inverted right x axis y > axis) 380mm x 305mm > 1280x1024 60.0*+ 75.0 > 1152x864 75.0 > 1024x768 75.1 60.0 > 800x600 75.0 60.3 > 640x480 75.0 60.0 > 720x400 70.1 > > But only one display works. > After that if I run for example : > xrandr --output DisplayPort-0 --left-of DisplayPort-1 > I have a black screen on the 2 monitors and I can't access to a terminal. > > I noticed something else : When I turn off and on again the second monitor > (manually) an kernel error occurred : > [18515.140220] [drm:radeon_process_aux_ch] *ERROR* Buffer to small for return > answer 1 6 > During some seconds, the main monitor get stranges color and lights > intensity! > > It seem to be the same problem that the bug #569970 but I am not sure. > Someone have an idea to solve this? > Tell me if you need other logs or informations. > Please try the 2.6.35 kernel from experimental.
Cheers, Julien
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