[Bug 66972] GPU lockup CP stall with radeon.dpm=1 on BARTS/6850

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66972

--- Comment #4 from Andre Heider <a.heider at gmail.com> ---
Thanks, but with that patch and "radeon.dpm=1 radeon.aspm=0" I still get the
stall. And now lightdm just displays garbage, before the patch it was able to
come up after a delay.

Also, I noticed this "ACPI FADT declares the system doesn't support PCIe ASPM,
so disable it", related?

[   18.907265] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
[   18.907271] radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000003
last fence id 0x0000000000000001)
[   18.985214] radeon 0000:01:00.0: Saved 87 dwords of commands on ring 0.
[   18.985225] radeon 0000:01:00.0: GPU softreset: 0x00000008
[   18.985227] radeon 0000:01:00.0:   GRBM_STATUS               = 0xA0003828
[   18.985230] radeon 0000:01:00.0:   GRBM_STATUS_SE0           = 0x00000007
[   18.985232] radeon 0000:01:00.0:   GRBM_STATUS_SE1           = 0x00000007
[   18.985234] radeon 0000:01:00.0:   SRBM_STATUS               = 0x20000AC0
[   18.985236] radeon 0000:01:00.0:   SRBM_STATUS2              = 0x00000000
[   18.985238] radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
[   18.985241] radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x00004100
[   18.985243] radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00020180
[   18.985245] radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x80028042
[   18.985247] radeon 0000:01:00.0:   R_00D034_DMA_STATUS_REG   = 0x44C83D57
[   18.997899] radeon 0000:01:00.0: GRBM_SOFT_RESET=0x00004001
[   18.997952] radeon 0000:01:00.0: SRBM_SOFT_RESET=0x00000100
[   18.999099] radeon 0000:01:00.0:   GRBM_STATUS               = 0x00003828
[   18.999101] radeon 0000:01:00.0:   GRBM_STATUS_SE0           = 0x00000007
[   18.999103] radeon 0000:01:00.0:   GRBM_STATUS_SE1           = 0x00000007
[   18.999106] radeon 0000:01:00.0:   SRBM_STATUS               = 0x200000C0
[   18.999108] radeon 0000:01:00.0:   SRBM_STATUS2              = 0x00000000
[   18.999110] radeon 0000:01:00.0:   R_008674_CP_STALLED_STAT1 = 0x00000000
[   18.999112] radeon 0000:01:00.0:   R_008678_CP_STALLED_STAT2 = 0x00000000
[   18.999114] radeon 0000:01:00.0:   R_00867C_CP_BUSY_STAT     = 0x00000000
[   18.999116] radeon 0000:01:00.0:   R_008680_CP_STAT          = 0x00000000
[   18.999118] radeon 0000:01:00.0:   R_00D034_DMA_STATUS_REG   = 0x44C83D57
[   18.999125] radeon 0000:01:00.0: GPU reset succeeded, trying to resume
[   19.020762] [drm] PCIE gen 2 link speeds already enabled
[   19.022654] [drm] PCIE GART of 512M enabled (table at 0x0000000000273000).
[   19.022749] radeon 0000:01:00.0: WB enabled
[   19.022751] radeon 0000:01:00.0: fence driver on ring 0 use gpu addr
0x0000000040000c00 and cpu addr 0xffff8807fff9fc00
[   19.022752] radeon 0000:01:00.0: fence driver on ring 3 use gpu addr
0x0000000040000c0c and cpu addr 0xffff8807fff9fc0c
[   19.024253] radeon 0000:01:00.0: fence driver on ring 5 use gpu addr
0x0000000000072118 and cpu addr 0xffffc9000c932118
[   19.040412] [drm] ring test on 0 succeeded in 3 usecs
[   19.040474] [drm] ring test on 3 succeeded in 1 usecs
[   19.215251] [drm] ring test on 5 succeeded in 2 usecs
[   19.215258] [drm] UVD initialized successfully.
[   19.217129] [drm] ib test on ring 0 succeeded in 0 usecs
[   19.217182] [drm] ib test on ring 3 succeeded in 1 usecs
[   29.368594] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
[   29.368601] radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000004
last fence id 0x0000000000000002)
[   29.368604] [drm:r600_uvd_ib_test] *ERROR* radeon: fence wait failed (-35).
[   29.368610] [drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on
ring 5 (-35).

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