[Bug 97931] New: GPU lockup with Radeon HD 4670

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=97931

            Bug ID: 97931
           Summary: GPU lockup with Radeon HD 4670
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt9-3
                    (2015-04-23) x86_64 GNU/Linux
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: joe.r.floss.user@gmail.com
        Regression: No

Created attachment 176201
  --> https://bugzilla.kernel.org/attachment.cgi?id=176201&action=edit
xserver-xorg package info

Hello,

I have a bug that regularly happens when running FlightGear (which uses OpenGL
a lot). The kernel messages are very similar to those from bug 68571 ("GPU
lockup on AMD Radeon HD6850 with DPM=1"). The symptoms are: screen goes blank
for a few seconds, reappears, goes blank again, reappears garbled, alternates
between blank and garbled a few times, and if I don't reboot quickly enough, I
seem to recall (not sure about this one) that the whole system may crash in a
way that requires a hard reset. My kernel command line is:

BOOT_IMAGE=/boot/vmlinuz-3.16.0-4-amd64 root=UUID=... ro init=/bin/systemd
ipv6.disable=1

This bug is present on Debian unstable, I had it yesterday; it is also present
in the just-released jessie. I am attaching the kernel log from yesterday's
occurrence of the bug. My graphics adapter is:

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV730
XT [Radeon HD 4670] (prog-if 00 [VGA controller])
        Subsystem: PC Partner Limited / Sapphire Technology Device e100
        Flags: bus master, fast devsel, latency 0, IRQ 50
        Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Memory at fb9e0000 (64-bit, non-prefetchable) [size=64K]
        I/O ports at be00 [size=256]
        [virtual] Expansion ROM at fb900000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 3
        Capabilities: [58] Express Legacy Endpoint, MSI 00
        Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010
<?>
        Kernel driver in use: radeon

If there is something I can test to help solve this bug, please say so. I
wonder if there are graphics adapters with decent OpenGL support using free
drivers that don't suffer from this kind of bug...

Thanks

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