[Bug 73696] New: [i915 2.99.907 TearFree option] slow, screen corruption

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73696

          Priority: medium
            Bug ID: 73696
          Assignee: chris at chris-wilson.co.uk
           Summary: [i915 2.99.907 TearFree option] slow, screen
                    corruption
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: dimon at gmx.net
          Hardware: x86 (IA32)
            Status: NEW
           Version: unspecified
         Component: Driver/intel
           Product: xorg

This happens only sometimes. If this happens I have to restart X several times
till the driver is working fine. Once the driver is wokring right it's doing it
for the whole X session.

On affecten X sessions I get:
- screen corruptions e.g. in Firefox scrolling is choppy. 
- the tests GtkDrawingArea - Lines, GtkDrawingArea - Circles, GtkDrawingArea -
Text in gtkperf run slower, I see only 3-4 different frames in each test.

2:2.99.907+git20140115.40beee99-0ubuntu0sarvatt~saucy
i3wm, no compositing manager

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