Red Hat Bugzilla – Bug 587918
Monitor doesn't turn on again after it's been suspended
Last modified: 2011-06-27 12:00:35 EDT
Description of problem:
I have a r600 ATI card connected to my monitor with DisplayPort-cables. When my monitor goes into suspend, it won't come back on. This happens on 22.214.171.124 and 126.96.36.199, but not 188.8.131.52 and earlier.
In /var/log/messages i get the following:
Apr 30 16:34:22 localhost kernel: [drm:dp_link_train] *ERROR* clock recovery tried 5 times
Apr 30 16:34:22 localhost kernel: [drm:dp_link_train] *ERROR* clock recovery failed
Apr 30 16:34:22 localhost kernel: [drm:dp_link_train] *ERROR* channel eq failed: 5 tries
Apr 30 16:34:22 localhost kernel: [drm:dp_link_train] *ERROR* channel eq failed
01:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon HD 3470
Version-Release number of selected component (if applicable):
Kernels that work:
Kernels that doesn't work:
Steps to Reproduce:
1. Boot 184.108.40.206 or newer kernels
2. Screensaver turns on
3. Monitor suspends
Won't come back on
Monitor should be turned on again
It still doesn't work with these kernels:
For me this makes all kernel-updates useless.
Still doesn't work on kernel-220.127.116.11-147.fc13.x86_64. :-(
I have the same problem. Screen is black after suspend. As a workaround I have to press CTRL-ALT-F7 CTRL-ALT-F9, CTRL-ALT-F1 etc. until I get my desktop back.
02:00.0 VGA compatible controller: nVidia Corporation G92 [GeForce 9600 GSO] (rev a2)
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