http://bugs.freedesktop.org/show_bug.cgi?id=26639
Summary: [radeon KMS] switching to res 1024x768 kills output
Product: DRI
Version: DRI CVS
Platform: Other
OS/Version: All
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Radeon
AssignedTo: dri-devel@lists.sourceforge.net
ReportedBy: liquid.a...@gmx.net
Created an attachment (id=33401)
--> (http://bugs.freedesktop.org/attachment.cgi?id=33401)
dmesg output
Hi there,
switching to resolution 1024x768 doesn't work on my hardware (RV740 + IBM P260
CRT), the CRT simply fails to receive a signal and shuts down.
xrandr output:
Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 8192 x 8192
DVI-0 disconnected (normal left inverted right x axis y axis)
DIN disconnected (normal left inverted right x axis y axis)
DVI-1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 388mm
x 291mm
1280x1024 85.0*+ 75.0
1600x1200 85.0
1024x768 85.0 75.1 70.1 60.0
960x529 75.0
800x600 85.1 72.2 75.0 60.3 56.2
640x480 85.0 72.8 75.0 60.0
720x400 87.8 70.1
1280x1024 is the standard mode and I just tried it: Every other mode works
completly fine - just the 1024x768 mode results in no signal.
No interesting output in dmesg when switching via xrandr.
Kernel is uptodate drm-linux branch of airlied's tree. But this also happens
with drm-radeon-testing. Not sure if it's a KMS problem, but at least it
happens with KMS enabled.
I can try a testrun with modeset disabled, if that helps.
Greets,
Tobias
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