[Bug 66425] New: "failed testing IB on ring 5" when suspending to disk

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=66425

          Priority: medium
            Bug ID: 66425
          Assignee: dri-devel at lists.freedesktop.org
           Summary: "failed testing IB on ring 5" when suspending to disk
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: austin.lund at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: DRI CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 81770
  --> https://bugs.freedesktop.org/attachment.cgi?id=81770&action=edit
Full log from suspend test

With kernel 3.10 suspend to disk seems to case a problem with my GPU.  I did
this to test suspend:

echo devices > /sys/power/pm_test
echo disk > /sys/power/state

It takes quite a while to return to the console and the system becomes
unstable.  Strangely suspend to ram doesn't seem to have any problems.

The relevant log lines seem to be:

PM: Allocated 2886788 kbytes in 0.39 seconds (7402.02 MB/s)
Freezing remaining freezable tasks ... (elapsed 0.01 seconds) done.
Suspending console(s) (use no_console_suspend to debug)
apple-gmux 00:07: System wakeup disabled by ACPI
radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x0000000000174118 and
cpu addr 0xffffc9001d233118
PM: freeze of devices complete after 292.114 msecs
hibernation debug: Waiting for 5 seconds.
[drm] Wrong MCH_SSKPD value: 0x16040307
[drm] This can cause pipe underruns and display issues.
[drm] Please upgrade your BIOS to fix this.
[drm] PCIE gen 2 link speeds already enabled
[drm] PCIE GART of 512M enabled (table at 0x0000000000142000).
radeon 0000:01:00.0: WB enabled
radeon 0000:01:00.0: fence driver on ring 0 use gpu addr 0x0000000040000c00 and
cpu addr 0xffff88025f328c00
radeon 0000:01:00.0: fence driver on ring 3 use gpu addr 0x0000000040000c0c and
cpu addr 0xffff88025f328c0c
radeon 0000:01:00.0: fence driver on ring 5 use gpu addr 0x0000000000a9d118 and
cpu addr 0xffffc9001e3b2118
[drm] ring test on 0 succeeded in 2 usecs
[drm] ring test on 3 succeeded in 1 usecs
[drm] ring test on 5 succeeded in 1 usecs
[drm] UVD initialized successfully.
[drm] ib test on ring 0 succeeded in 0 usecs
[drm] ib test on ring 3 succeeded in 1 usecs
radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec
radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000004 last fence id
0x0000000000000002)
[drm:r600_uvd_ib_test] *ERROR* radeon: fence wait failed (-35).
[drm:radeon_ib_ring_tests] *ERROR* radeon: failed testing IB on ring 5 (-35).

Full log attached.

$ uname -a
Linux lund-macbookpro 3.10.0+ #14 SMP PREEMPT Mon Jul 1 09:12:13 EST 2013
x86_64 GNU/Linux

(+ due to two patches which are unrelated to this driver, but otherwise vanilla
3.10)

$ sudo lspci -v -s 01:00.0
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Whistler [Radeon HD 6630M/6650M/6750M/7670M/7690M] (prog-if 00 [VGA
controller])
    Subsystem: Apple Inc. MacBookPro8,2 [Core i7, 15", Late 2011]
    Flags: bus master, fast devsel, latency 0, IRQ 49
    Memory at 90000000 (64-bit, prefetchable) [size=256M]
    Memory at b0800000 (64-bit, non-prefetchable) [size=128K]
    I/O ports at 2000 [size=256]
    Expansion ROM at b0820000 [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 <?>
    Capabilities: [150] Advanced Error Reporting
    Kernel driver in use: radeon
    Kernel modules: radeon

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