[Bug 93446] New: [HD Graphics 3000] [SNA] TearFree option ineffective after screensaver, screen power-off
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Fri Dec 18 22:08:12 PST 2015
https://bugs.freedesktop.org/show_bug.cgi?id=93446
Bug ID: 93446
Summary: [HD Graphics 3000] [SNA] TearFree option ineffective
after screensaver, screen power-off
Product: xorg
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/intel
Assignee: chris at chris-wilson.co.uk
Reporter: phillipedison1891 at gmail.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
Created attachment 120590
--> https://bugs.freedesktop.org/attachment.cgi?id=120590&action=edit
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
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