Bug 28856 - Laptop screen turns black with KMS, external screen stays on
Summary: Laptop screen turns black with KMS, external screen stays on
Status: RESOLVED DUPLICATE of bug 27744
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: XOrg git
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
Depends on:
Reported: 2010-06-30 11:26 UTC by Alex B
Modified: 2010-06-30 11:54 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

dmesg output (39.12 KB, text/plain)
2010-06-30 11:26 UTC, Alex B
no flags Details
xrandr --verbose (8.23 KB, text/plain)
2010-06-30 11:27 UTC, Alex B
no flags Details
Xorg log (44.26 KB, text/plain)
2010-06-30 11:28 UTC, Alex B
no flags Details

Description Alex B 2010-06-30 11:26:51 UTC
Created attachment 36638 [details]
dmesg output

After booting with KMS enabled my laptop screen turns black as soon as X starts, while my external screen continues to work. The desktop still expands to both screens. If I disconnect the external monitor everything runs smooth, I can even connect the monitor afterwars and enable it through xrandr. But the laptop screen turns black again when I run glxgears through Gallium. I can turn the black screen off and on through xrandr, but it stays black.

With KMS disabled everything works fine. I rebuild my graphic stack from git but the problem remained. The error first occured months ago, so I disabled KMS. Today I tried it again and the error is still there.

Linux 2.6.34
dri2proto, glproto, libdrm, xf86-video-ati, libgl + mesa + ati-dri from git 2010-06-30
Ati Radeon Mobility x1700
Comment 1 Alex B 2010-06-30 11:27:44 UTC
Created attachment 36641 [details]
xrandr --verbose
Comment 2 Alex B 2010-06-30 11:28:30 UTC
Created attachment 36642 [details]
Xorg log
Comment 3 Alex Deucher 2010-06-30 11:54:10 UTC

*** This bug has been marked as a duplicate of bug 27744 ***

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.