[Bug 76441] New: gma500_gfx.ko: flicker when using psbdrmfb

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=76441

            Bug ID: 76441
           Summary: gma500_gfx.ko: flicker when using psbdrmfb
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.13
          Hardware: i386
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: andreas.thalhammer at linux.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

I'm running a netbook with an Atom Z5x0 CPU and a US15W chipset. The graphics
controller is called GMA500. On Windows XP and 7 (32bit) I need a special
driver from Intel, as this GMA500 seems to be very different from the others
sharing the same name.

A few days ago I installed Linux on it and found that the screen was
flickering. According to dmesg the system is using video=psbdrmfb. I tried to
boot without starting a graphical window manager and on the text console I see
the same thing: flickering.

I am using kernel 3.13.

With video=vesafb (I had to remove gma500_gfx.ko to get vesafb working) the
flickering is gone -- but it is very slow and resolution is wrong.

Searching for a solution I found that there are various reposts of the same
problem: please try "gma500_gfx flicker" as search query in Google.

This seems to be this very bug:
https://bugs.freedesktop.org/show_bug.cgi?id=78562

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