[Bug 112921] New: Lock-up after screensaver on radeon

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=112921

            Bug ID: 112921
           Summary: Lock-up after screensaver on radeon
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.4
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri at kernel-bugs.osdl.org
          Reporter: jdelvare at suse.de
        Regression: No

Since I updated my kernel to v4.4, my system freezes frequently when I wake it
up from screen-off state (no suspend/resume involved, only screensaver kicking
in and display going to sleep.)

With previous kernels (<= 4.3.6) the lock-up never happened, although I
sometimes had garbled colors after screensaver, which could be solved easily by
switching to text console then back to X. The same workaround doesn't work for
the lock-up.

I'm running Gnome 3.16.0 on openSUSE Leap 42.1. The hardware is:

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Turks
XT [Radeon HD 6670/7670]

I am able to unlock X by restarting gnome-shell (with "killall -3 gnome-shell"
from a text console.)

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