Bug 28856

Summary: Laptop screen turns black with KMS, external screen stays on
Product: DRI Reporter: Alex B <aneaspam>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED DUPLICATE QA Contact:
Severity: normal    
Priority: medium    
Version: XOrg git   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
dmesg output
none
xrandr --verbose
none
Xorg log none

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.

Archlinux
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 ***

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