[Bug 98987] [RS690] BUG: soft lockup when radeon modesetting

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98987

            Bug ID: 98987
           Summary: [RS690] BUG: soft lockup when radeon modesetting
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: critical
          Priority: high
         Component: DRM/Radeon
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: vaclav.ovsik at gmail.com

Created attachment 128323
  --> https://bugs.freedesktop.org/attachment.cgi?id=128323&action=edit
logged using netconsole - kernel 4.8.7 (Debian kernel)

Dear developers,
I'm unable to boot into functional system with KMS radeon. When
radeon.modeset=0 on kernel command-line system it starts and run OK.
Without disabled modeset the kernel 4.7, 4.8, 4.9-rc7 with 90% probability
locks or crash.
I'm running Debian unstable and tried Debian kernels 4.7, 4.8 from Debian and
compile 4.9rc7 vanilla kernel.

Attached logs through netconsole.

Any idea what I can test?

Thanks
-- 
Zito

ref: debian bug #845382 -
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=845382

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