Created attachment 36293 [details] [review] dmesg Hi, I would report you a bug with displayport and radeon module on recent linux kernel. When my card is plugged with displayport I have the following error in dmesg and screen stay black. [ 18.493734] [drm:dp_link_train] ERROR clock recovery reached max voltage [ 18.493735] [drm:dp_link_train] ERROR clock recovery failed [ 18.510279] [drm:dp_link_train] ERROR channel eq failed: 5 tries [ 18.510280] [drm:dp_link_train] ERROR channel eq failed When i plug my screen with (dell 27" 2560*1440) a DVI cord everything is fabulous. This was tested with 2.6.35-rc3, 2.6.34, 2.6.32 and all is revelent. I've also tested with a patch from here : http://comments.gmane.org/gmane.comp.video.dri.devel/46851 but nothing change. My test was done with a debian sid/experimental disto. # lspci|grep VGA 01:00.0 VGA compatible controller: ATI Technologies Inc RV710 [Radeon HD 4550] # uname -a Linux sluttrin 2.6.35-rc3-seblu #5 SMP Mon Jun 14 15:43:18 CEST 2010 x86_64 GNU/Linux # dpkg -l|grep -e radeon -e mesa (16:47)[2] ii libdrm-radeon1 2.4.21-1 Userspace interface to radeon-specific kerne ii libdrm-radeon1-dbg 2.4.21-1 Userspace interface to radeon-specific kerne ii libgl1-mesa-dri 7.8.1-2 A free implementation of the OpenGL API -- D ii libgl1-mesa-glx 7.8.1-2 A free implementation of the OpenGL API -- G ii libglu1-mesa 7.7.1-3 The OpenGL utility library (GLU) ii mesa-utils 7.7.1-3 Miscellaneous Mesa GL utilities ii xserver-xorg-video-radeon 1:6.13.0-2 X.Org X server -- AMD/ATI Radeon display dri ii xserver-xorg-video-radeon-dbg 1:6.13.0-2 X.Org X server -- AMD/ATI Radeon display dri ii xserver-xorg-video-radeonhd 1.3.0-3 X.Org X server -- AMD/ATI r5xx-r7xx alternat ii xserver-xorg-video-radeonhd-dbg 1.3.0-3 X.Org X server -- AMD/ATI r5xx-r7xx alternat I can provide more information on request and offer help testing patches. Regards,
Created attachment 36294 [details] [review] Xorg log file
test with modeseting disable is the same. Screen stay black. But error is not in dmesg. I will add Xorg log and dmesg. Need anything else ?
Created attachment 36295 [details] [review] dmesg without modeset
Created attachment 36296 [details] [review] Xorg.0.log without modeset
Do any modes other than 2560x1440 work ok?
with this xorg.conf SubSection "Display" #Modes "2560x1440" "1920x1200" "1280x1024" "1024x768" "800x600" "640x480" Modes "1024x768" "800x600" "640x480" EndSubSection screen is still black. In attachment, xorg log file On Tue, Jun 15, 2010 at 7:30 PM, <bugzilla-daemon@freedesktop.org> wrote: > https://bugs.freedesktop.org/show_bug.cgi?id=28554 > > --- Comment #5 from Alex Deucher <agd5f@yahoo.com> 2010-06-15 10:30:43 PDT --- > Do any modes other than 2560x1440 work ok? > > -- > Configure bugmail: https://bugs.freedesktop.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You reported the bug. >
Created attachment 36299 [details] Xorg.0.log with a mode lower than 2560 This is an example with a resolution of 1024x768. But none other works.
*** This bug has been marked as a duplicate of bug 27314 ***
Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.