[Bug 79011] New: GPU lockup, screen freeze with Radeon HD7770

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=79011

            Bug ID: 79011
           Summary: GPU lockup, screen freeze with Radeon HD7770
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.15 / 3.14
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: fabianp@fusionzone.nl
        Regression: No

Hi,

I am running 64 bit Arch Linux on kernel 3.15, the bug also occured with 3.14,
with Intel i5 processor and a AMD Radeon HD7770 graphics card. After a while
(randomly), both monitors go to sleep. Sometimes, they wake up after 10-20
seconds and I can continue using the computer, but more often they won't and it
requires a hard reboot. When this happens the sound continues playing. Also,
rarely the computer freezes, the monitors stay active and all I can move is my
mouse, also requiring a hard boot.

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