[Bug 90377] New: [82Q35] Black widgets after some use

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90377

            Bug ID: 90377
           Summary: [82Q35] Black widgets after some use
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: fbobraga at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

Created attachment 115647
  --> https://bugs.freedesktop.org/attachment.cgi?id=115647&action=edit
Xorg.0.log

Its related with https://bugzilla.redhat.com/show_bug.cgi?id=949058:

Occaionally, any new opened window (explorers, libreoffice, firefox, terminal,
etc) will go black and making it unusuable unless I restart X.

After installing Fedora 22 (this issue occurred before, on Debian 8 "Jessie"),
I've got corrupted graphics (images wrong displayed - as showed here:
http://youtu.be/RdPf8SLv_k0) - tried the fix in
https://bugzilla.redhat.com/show_bug.cgi?id=949058#c16, but it not solved the
issue (it seemed to have no effect at all - I think "AccelMethod" it's already
set to "sna"...).

Based on https://bugzilla.redhat.com/show_bug.cgi?id=949058#c16 and some
googling, I've tried it:

################# begin file in /etc/X11/xorg.conf.d/ #################
Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option      "AccelMethod"  "uxa"
EndSection
################# end file #################

... it corrected the graphics (images are displayed correctly!), but the black
boxes occurred again after some use (like on Debian)...

additional info:
      -- chipset: Q35
      -- system architecture: x86_64
      -- xf86-video-intel/xserver/ version: in the attached Xorg.0.log
      -- kernel version: 4.0.1-300.fc22.x86_64
      -- Linux distribution: Fedora 22
      -- Machine or mobo model: Dell Optiplex 755
      -- Display connector: DVI (with DVI-VGA adapter to connect monitor)

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