Bug 49654

Summary: Heavy flickering on LVDS panel when not using the native resolution
Product: DRI Reporter: Niels Ole Salscheider <niels_ole>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: XOrg git   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
video bios
none
Xorg.0.log
none
dmesg
none
Xorg.0.log after switching between modes none

Description Niels Ole Salscheider 2012-05-08 12:57:47 UTC 
Created attachment 61250 [details]
video bios

When I set the LVDS panel to a resolution that is lower than the native resolution it starts to flicker heavily.

My laptop is a HP ProBook 6465b that has a Llano APU. The latter uses a TRAVIS dp bridge chip to provide LVDS connectivity.
Setting the scale mode does not seem to have any effect either.
Comment 1 Alex Deucher 2012-05-10 15:43:30 UTC 
please attach your xorg log and dmesg output.
Comment 2 Niels Ole Salscheider 2012-05-11 00:05:13 UTC 
Created attachment 61417 [details]
Xorg.0.log
Comment 3 Niels Ole Salscheider 2012-05-11 00:09:55 UTC 
Created attachment 61419 [details]
dmesg
Comment 4 Niels Ole Salscheider 2012-05-11 00:16:58 UTC 
Created attachment 61420 [details]
Xorg.0.log after switching between modes

The non-native mode 1440x900 seems to work, too. But all other modes cause flickering.
Comment 5 Niels Ole Salscheider 2012-06-02 09:09:48 UTC 
Seems to be fixed for kernel 3.5.

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