[Bug 199385] New: Lockup radeon 0000:01:00.0: Packet0 not allowed!

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=199385

            Bug ID: 199385
           Summary: Lockup radeon 0000:01:00.0: Packet0 not allowed!
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.15.15
          Hardware: All
                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: smf.linux at ntlworld.com
        Regression: No

Created attachment 275347
  --> https://bugzilla.kernel.org/attachment.cgi?id=275347&action=edit
Some dmesg data

Getting a few (3-4 over 2-3 weeks) graphics lockups. The screen goes to a
random light grey pattern with a large square cursor. Usually the lockup is
solid but on one occasion I was able to ssh in from another machine and capture
some dmesg data (attached).

The graphics card is new (11th March) and replaces an older Turks model which
was trouble free in this machine. Details of the new card are as follows:
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Oland
PRO [Radeon R7 240/340]


Any suggestions ?

Thanks

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