[Bug 76246] New: Google hangout video flickers/blanks

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=76246

          Priority: medium
            Bug ID: 76246
          Assignee: chris at chris-wilson.co.uk
           Summary: Google hangout video flickers/blanks
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: mar.kolya at gmail.com
          Hardware: Other
            Status: NEW
           Version: git
         Component: Driver/intel
           Product: xorg

I have an Linux Mint Petra (i.e. Ubuntu Saucy) on a desktop with Intel X4500
integrated graphics (G41).

I installed Google Hangout plugin in Firefox. When I try to make a video call
in google hangout the video flickers (or blanks, not sure what would be correct
term). If I do not move the mouse I see mostly black screen and sometimes see
video. If I constantly move the mouse I see video which sometimes blanks.

Some details:
  - The bug appears in both nightly FF and stable FF but doesn't seem to appear
in chromium.
  - The bug does appear in Oibaf ppa (2:2.99.910+git1403141930.8cc) but doesn't
not appear in stock version of xorg/graphics drives that come with Saucy.
  - I've filed a bug with Mozilla:
https://bugzilla.mozilla.org/show_bug.cgi?id=984177 but the fact that bug
doesn't seem to be reproducible with older Intel driver suggests that FF might
not be completely at fault.
  - I use Oibaf ppa because Saucy's stock xorg is not exactly usable on this
hardware due to https://bugs.freedesktop.org/show_bug.cgi?id=55500 and the fact
that TearFree doesn't see to work there and without TearFree life if very ugly.
  - Yes, I use TearFree, but this bug is reproducible without it.

  I would greatly appreciate if somebody would be interested in looking into
this issue. I have a feeling it might be related to
https://bugs.freedesktop.org/show_bug.cgi?id=55500 somehow...

  I would be happy to provide any additional information and test anything on
the hardware.

  Thanks!

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