[Nouveau] [Bug 92727] [NVC1] PFIFO not accessible when coming out of runtime pm

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92727

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|nouveau E[                  |[NVC1] PFIFO not accessible
                   |PBUS][0000:01:00.0] MMIO    |when coming out of runtime
                   |read of 0x00000000 FAULT at |pm
                   |0x002140 [ !ENGINE ]        |

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
... gpu comes ok ...

[  133.975729] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
[  133.975805] ACPI: \_SB_.PCI0.PEG0.PEGP: failed to evaluate _DSM
[  133.975809] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
[  149.703743] r8169 0000:03:00.0 eth0: link down
[  163.217080] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
[  163.217166] ACPI: \_SB_.PCI0.PEG0.PEGP: failed to evaluate _DSM
[  163.217170] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type
mismatch - Found [Buffer], ACPI requires [Package] (20141107/nsarguments-95)
[  163.227218] nouveau E[    PBUS][0000:01:00.0] MMIO read of 0x00000000 FAULT
at 0x002140 [ !ENGINE ]

Weird, I guess it doesn't come out of runpm sometimes? You can workaround this
by booting with nouveau.runpm=0 but it will leave the nvidia gpu on the whole
time.

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