[Bug 103147] New: Radeon X600 (RV370): gpu reset/lockup (PCIe, ppc64)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103147

            Bug ID: 103147
           Summary: Radeon X600 (RV370): gpu reset/lockup (PCIe, ppc64)
           Product: xorg
           Version: 7.7 (2012.06)
          Hardware: PowerPC
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
          Assignee: xorg-driver-ati at lists.x.org
          Reporter: erhard_f at mailbox.org
        QA Contact: xorg-team at lists.x.org

Created attachment 134739
  --> https://bugs.freedesktop.org/attachment.cgi?id=134739&action=edit
kernel log

I know quite a few r300 cards have issues on AGP PPC-hardware, but this is a
PCIe card so I decided to post a bug report nevertheless.

It's a Radeon X600 running in a PowerMac G5 11,2 (PCIe) on kernel 4.13.5,
xorg-server-1.19.4, libdrm-2.4.83, xf86-video-ati-7.10.0. Kernel log shows no
error initializing the card (see dmesg.txt), but when starting Xorg the machine
freezes  not later than a few secs. It's a complete freeze, accessing the
machine via ssh is no longer possible after the freeze happened:

[  280.815899] radeon 0001:06:00.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=none:owns=none
[  294.948188] radeon 0001:06:00.0: ring 0 stalled for more than 10133msec
[  294.948202] radeon 0001:06:00.0: GPU lockup (current fence id
0x0000000000000002 last fence id 0x0000000000000003 on ring 0)
[  295.181717] radeon: wait for empty RBBM fifo failed! Bad things might
happen.
[  295.412441] Failed to wait GUI idle while programming pipes. Bad things
might happen.
[  295.413597] radeon 0001:06:00.0: Saved 27 dwords of commands on ring 0.
[  295.413618] radeon 0001:06:00.0: (r300_asic_reset:422)
RBBM_STATUS=0x8802C12F
[  295.913610] radeon 0001:06:00.0: (r300_asic_reset:441)
RBBM_STATUS=0x8802C12F
[  296.409606] radeon 0001:06:00.0: (r300_asic_reset:453)
RBBM_STATUS=0x8802C12F
[  296.409647] radeon 0001:06:00.0: GPU reset succeed
[  296.409651] radeon 0001:06:00.0: GPU reset succeeded, trying to resume
[  296.410230] radeon 0001:06:00.0: c000000458090000 unpin not necessary
[  296.410251] radeon 0001:06:00.0: (r300_asic_reset:422)
RBBM_STATUS=0x8802C12F
[  296.910240] radeon 0001:06:00.0: (r300_asic_reset:441)
RBBM_STATUS=0x8802C12F

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