Bug 93446 - [HD Graphics 3000] [SNA] TearFree option ineffective after screensaver, screen power-off
Summary: [HD Graphics 3000] [SNA] TearFree option ineffective after screensaver, scree...
Status: RESOLVED DUPLICATE of bug 92873
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Chris Wilson
QA Contact: Intel GFX Bugs mailing list
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2015-12-19 06:08 UTC by Phillip Andrews
Modified: 2015-12-19 09:25 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Attachments
Contains Dmesg contents (with drm.debug=0x06) and Xorg log (28.47 KB, text/plain)
2015-12-19 06:08 UTC, Phillip Andrews 		no flags Details
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Description Phillip Andrews 2015-12-19 06:08:12 UTC 
Created attachment 120590 [details]
Contains Dmesg contents (with drm.debug=0x06) and Xorg log

My Samsung laptop screen experiences tearing when using SNA acceleration in Ubuntu 15.10.  Setting "TearFree" to "true" in the X configuration fixes this... but when certain things happen, the tearing comes back, and the only way to stop it is to log out and log back in, which restarts the X server.  The aforementioned certain things are:

* mate-screensaver is activated
* Screen powers off after a period of time, per Ubuntu power settings

Activating the MATE screensave alone doesn't break it, and neither does just letting the screen power off.  *Both* have to happen to break the TearFree.

I have attached a tarball containing both the dmesg contents (with drm debug lever 0x06) and the X log.

Best wishes,
Phillip
Comment 1 Chris Wilson 2015-12-19 09:25:54 UTC 

*** This bug has been marked as a duplicate of bug 92873 ***

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