reassign 595033 linux-2.6 tag 595033 fixed-upstream patch kthxbye On Tue, Aug 31, 2010 at 11:51:33 -0400, Alex Deucher wrote:
> On Tue, Aug 31, 2010 at 10:59 AM, Thomas PIERSON <web.pier...@gmail.com> > wrote: > > 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. > > You need this patch most likely: > http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=5137ee940c3e593ae5578a7a12a604eb8f239ac0 > which means 2.6.36rc3 or newer. > Thanks for the pointer Alex, reassigning to the kernel package. Cheers, Julien
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