Bug 49654 - Heavy flickering on LVDS panel when not using the native resolution
Summary: Heavy flickering on LVDS panel when not using the native resolution
Status: RESOLVED FIXED
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: XOrg git
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Default DRI bug account
QA Contact:
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Depends on:
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Reported: 2012-05-08 12:57 UTC by Niels Ole Salscheider
Modified: 2012-06-02 09:09 UTC (History)
0 users

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Attachments
video bios (60.50 KB, application/octet-stream)
2012-05-08 12:57 UTC, Niels Ole Salscheider 		no flags Details
Xorg.0.log (41.65 KB, application/octet-stream)
2012-05-11 00:05 UTC, Niels Ole Salscheider 		no flags Details
dmesg (47.72 KB, application/octet-stream)
2012-05-11 00:09 UTC, Niels Ole Salscheider 		no flags Details
Xorg.0.log after switching between modes (71.39 KB, application/octet-stream)
2012-05-11 00:16 UTC, Niels Ole Salscheider 		no flags Details
View All

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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