Bug 16180

Summary: radeon regression with 2.6.35-rc2-00001-g386f40c: black screen after resume
Product: Drivers Reporter: cedric (cedric)
Component: Video(DRI - non Intel)Assignee: drivers_video-dri
Status: CLOSED CODE_FIX    
Severity: normal CC: alexdeucher, rjw
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.35-rc Subsystem:
Regression: Yes Bisected commit-id:
Bug Depends on:    
Bug Blocks: 7216, 16055    
Attachments: patch that put dpms on
Patch with a description and s-o-b

Description cedric 2010-06-11 10:59:23 UTC 
With the aforementioned kernel version, after a resume the screen stays black. Everything seems responding (wifi led blinking, reboot, ...).

After reading the logs between this kernel and 2.6.35-rc1-00194-gaef4b9a (known good), i think the problem is with this patch

drm/radeon/kms: make sure display hw is disabled when suspending

After I did apply the attached patch, the resume seems OK.
Don't know if it's the good solution...
Comment 1 cedric 2010-06-11 11:03:12 UTC 
Created attachment 26725 [details]
patch that put dpms on
Comment 2 Alex Deucher 2010-06-11 16:06:18 UTC 
Patch looks good.  Can you add your Signed-Off-By?
Comment 3 cedric 2010-06-11 18:24:18 UTC 
Created attachment 26733 [details]
Patch with a description and s-o-b

Is this ok like this, I'm new at this thing (I'm just a poor tester/reporter ;-)
Comment 4 Alex Deucher 2010-06-11 18:41:22 UTC 
Thanks.  I've sent the patch to Dave.
Comment 5 Rafael J. Wysocki 2010-06-14 20:02:01 UTC 
Handled-By : Cedric Godin <cedric.godin@skynet.be>
Patch : https://bugzilla.kernel.org/attachment.cgi?id=26733