[Nouveau] [Bug 68572] New: shutdown threshold temperature sometimes isn't restored properly after hibernate

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=68572

          Priority: medium
            Bug ID: 68572
          Assignee: nouveau at lists.freedesktop.org
           Summary: shutdown threshold temperature sometimes isn't
                    restored properly after hibernate
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: mr.dash.four at googlemail.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

This is what I had about an hour or so ago after restore from hibernate:

Aug 26 13:04:36 test1 kernel: nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch
1 [Xorg[1928]] get 0x00021cfc put 0x0001dcc8 state 0x8002b8c8 (err:
INVALID_CMD) push 0x00000000
Aug 26 13:04:36 test1 kernel: nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch
1 [Xorg[1928]] get 0x0002daa8 put 0x00042324 state 0x80000000 (err:
INVALID_CMD) push 0x5f000000
Aug 26 13:04:36 test1 kernel: nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch
1 [Xorg[1928]] get 0x0004232c put 0x00008800 state 0x80000000 (err:
INVALID_CMD) push 0xff010000
Aug 26 13:04:36 test1 kernel: nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch
1 [Xorg[1928]] get 0x00008810 put 0x0000dd88 state 0x80000000 (err:
INVALID_CMD) push 0xff010000
Aug 26 13:04:36 test1 kernel: nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch
1 [Xorg[1928]] get 0x0000dd88 put 0x0000a0cc state 0x00000000 (err: NONE) push
0x4d011000
Aug 26 13:04:36 test1 kernel: nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch
1 [Xorg[1928]] get 0x0000a0d0 put 0x00008800 state 0x80000000 (err:
INVALID_CMD) push 0xff010000
Aug 26 13:04:36 test1 kernel: nouveau  [  PTHERM][0000:01:00.0] temperature (0
C) hit the 'shutdown' threshold
Aug 26 13:04:36 test1 kernel: nouveau E[   PFIFO][0000:01:00.0] DMA_PUSHER - ch
1 [Xorg[1928]] get 0x00008810 put 0x80002264 state 0x80000000 (err:
INVALID_CMD) push 0xff011000
Aug 26 13:04:36 test1 kernel: nouveau W[   PFIFO][0000:01:00.0] unknown intr
0x00010000, ch 3
Aug 26 13:04:36 test1 kernel: nouveau W[   PFIFO][0000:01:00.0] unknown intr
0x00010000, ch 9
[...]
Aug 26 13:04:42 test1 kernel: nouveau E[Xorg[1928]] failed to idle channel
0xcccc0000 [Xorg[1928]]
Aug 26 13:04:43 test1 acpid: exiting
Aug 26 13:04:45 test1 kernel: nouveau E[Xorg[1928]] failed to idle channel
0xcccc0000 [Xorg[1928]]
Aug 26 13:04:45 test1 kernel: nouveau W[   PFIFO][0000:01:00.0] unknown intr
0x00010000, ch 2
Aug 26 13:04:45 test1 kernel: nouveau W[   PFIFO][0000:01:00.0] unknown intr
0x00010000, ch 2
Aug 26 13:04:45 test1 kernel: nouveau W[   PFIFO][0000:01:00.0] unknown intr
0x00010000, ch 2
Aug 26 13:04:45 test1 kernel: nouveau W[   PFIFO][0000:01:00.0] unknown intr
0x00010000, ch 2
[...]
Aug 26 13:04:45 test1 kernel: nouveau E[   PFIFO][0000:01:00.0] still angry
after 101 spins, halt

As evident from the above logs, either the shutdown threshold temperature or my
current card temperature is 0C (or both) for some reason, which causes my video
card to freeze for a couple of seconds and then shut itself down.

My guess is that these values are not restored properly after hibernate. This
doesn't happen very often though - it is the first time I am seeing this after
about 20+ hibernate/restore cycles.

Also worth pointing out that I have the nouveau patches for bug #66177 applied
and I am in auto fan management mode, which has been working properly.

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