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Description of problem: My monitor when using the DVI connection flickers when set to the native resolution, 1920x1200. This is a regresion. It was fixed in Fedora 13 (bug #484692) but is broken in Fedora 15 beta. Version-Release number of selected component (if applicable): Live media from Test Day:2011-04-21 GNOME3 Final xorg-x11-drv-ati-6.14.0-7.20110316gitcdfc007ec.fc15.x86_64 xorg-x11-server-Xorg-1.10.0-7.fc15.x86_64 kernel-2.6.38.3-15.rc1.fc15.x86_64 How reproducible: Everytime. Steps to Reproduce: 1. Boot 2. Enable monitor if not already: xrandr --output DVI-0 --auto Actual results: Screen is black and flickers on momentarily and then off again. Expected results: Solid stable image. Additional info: HP Compaq 8510p laptop + docking station + HP LP2465 monitor http://www.smolts.org/client/show/pub_b361ec45-8e64-4b0d-bf67-d2213bfb6e0e Work arounds: A. (Using DVI) Change to a lower resolution like 1680x1050. B. Use the VGA connector instead.
Created attachment 495015 [details] xorg.0.log
Created attachment 495016 [details] xrandr output
Thanks for the bug report. We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue. Please add drm.debug=0x04 to the kernel command line, restart computer, and attach * your X server config file (/etc/X11/xorg.conf, if available), * output of the dmesg command, and * system log (/var/log/messages) to the bug report as individual uncompressed file attachments using the bugzilla file attachment link above. We will review this issue again once you've had a chance to attach this information. Thanks in advance.
Created attachment 495251 [details] dmesg
Created attachment 495253 [details] /var/log/messages
Judging by the symptoms, I have the same problem. (Just upgraded to F14 from F13, using preupgrade.)
Resolved with latest kernel updates kernel-2.6.38.7-30.fc15.x86_64 xorg-x11-drv-ati-6.14.1-1.20110504gita6d2dba6.fc15.x86_64 xorg-x11-server-Xorg-1.10.2-1.fc15.x86_64