Red Hat Bugzilla – Bug 981759
HD 7870 with two monitors doesn't work
Last modified: 2015-02-17 10:53:13 EST
Created attachment 769349 [details]
dmesg after login with drm.debug=0x04
Description of problem:
I have installed new video card
01:00.0 VGA compatible controller : Advanced Micro Devices, Inc. [AMD/ATI] Pitcairn XT [Radeon HD 7870 GHz Edition] [1002:6818]
with two monitors. After login in DE (KDE, Gnome, etc) first monitor shown in blue strips, second monitor disabled. System don't freeze, but monitors freezes.
Version-Release number of selected component (if applicable):
kernel-3.9.9-301.fc19.x86_64 (and 3.10.0-1.fc19.x86_64 too)
Steps to Reproduce:
1. Plug videocard
2. connect two monitors
3. boot and login
monitors doesn't work
both monitors works
Videocard after 23 jan 2013 (not defective).
Perfectly works in Windows. And with one monitor works too.
Created attachment 769350 [details]
/var/log/Xorg.0.log after login
Created attachment 769352 [details]
/var/log/messages after login
I have reproduced this bug with fresh git xf86-driver-ati and drm-next.
Bug in upstream https://bugs.freedesktop.org/show_bug.cgi?id=66934
Upstream bug has patches for fix this bug.
I've tested it. It's works.
Upstream bug https://bugs.freedesktop.org/show_bug.cgi?id=64850
Patch 1 https://bugs.freedesktop.org/attachment.cgi?id=84273
Patch 2 https://bugs.freedesktop.org/attachment.cgi?id=84274
Source RPM with patchset.
This bug was fixed in kernel 3.11.3.
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