Bug 39953

Summary: Flicker after waking from DPMS sleep
Product: DRI Reporter: Lauri Kasanen <cand>
Component: DRM/RadeonAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED MOVED QA Contact:
Severity: minor    
Priority: medium CC: marc.deslauriers, simon.strandman, will.dyson
Version: XOrg git   
Hardware: x86 (IA32)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
lspci -vvnn
none
dmesg none

Description Lauri Kasanen 2011-08-08 23:56:54 UTC
Created attachment 50058 [details]
lspci -vvnn

My E-350 laptop screen flickers for ~5 minutes every time after waking from DPMS. The flicker persists through VT switches and changing the power profile to high.

After the wait it stabilizes and picture is good again.

It looks similar to a CRT on 60Hz, but xrandr is confident the mode is right for the lcd (60hz, not something lower).


Lenovo G575 laptop
AMD E-350
Linux 3.0.1
Comment 1 Lauri Kasanen 2011-08-09 00:07:30 UTC
Created attachment 50060 [details]
dmesg
Comment 2 Lauri Kasanen 2011-08-09 00:08:56 UTC
Now that I tried to make it happen manually (sleep 1 && xset dpms force off), it didn't show itself; though for the last few days, it's always happened after X's 10-minute delay DPMS.
Comment 3 Simon Strandman 2011-10-04 01:05:19 UTC
I have this problem too on similar E350-based hardware.

Sometimes I get this flicker, sometimes the screen is garbled (bug #36513). When I get a garbled screen the flicker usually persists even after a reboot. (Though this never happens in windows so I don't think it's a hardware issue.)
Comment 4 Marc Deslauriers 2011-10-15 20:03:41 UTC
I am getting this on a C-50 based Acer Aspire One 522.
I can reliably reproduce the issue with:

xset dpms force off; sleep 10; xset dpms force on
Comment 5 Martin Peres 2019-11-19 08:20:21 UTC
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