Nouveau - Aug 2013 - [Bug 68768] New: [nv50] error during boot

https://bugs.freedesktop.org/show_bug.cgi?id=68768

          Priority: medium
            Bug ID: 68768
          Assignee: nouveau at lists.freedesktop.org
           Summary: [nv50] error during boot
        QA Contact: xorg-team at lists.x.org
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: mattia.b89 at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: unspecified
         Component: Driver/nouveau
           Product: xorg

Created attachment 84928
  --> https://bugs.freedesktop.org/attachment.cgi?id=84928&action=edit
dmesg

I get this two errors (or better warning, because the boot continues) during my
boot:

[    8.644478] nouveau E[    PBUS][0000:01:00.0] MMIO write of 0xffffffff FAULT
at 0x00e074
[    8.796621] nouveau E[  PTHERM][0000:01:00.0] unhandled intr 0x000001e0

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[nv50] error during boot    |[NV92] error during boot

--- Comment #1 from Ilia Mirkin <imirkin at alum.mit.edu> ---
The first should no longer happen in 3.11-rc7. See
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8ff860564076f99aeb4f6d35dcb6ea008624e64e

Also, there should have been no ill effect from that, right?

Not sure about the PTHREM error...

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[NV92] error during boot    |[NV92] PTHERM unhandled
                   |                            |intr error during boot

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--- Comment #2 from mattia.b89 <mattia.b89 at gmail.com> ---
thank you,

I (apparently) haven't noticed problems, at least no big problem

but deeply investigating I could notice a bad fan management (could be PTHERM
related....)

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--- Comment #3 from Ilia Mirkin <imirkin at alum.mit.edu> ---
[    8.796597] nouveau  [  PTHERM][0000:01:00.0] fan management: disabled

If you want to enable it, take a look at
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/thermal/nouveau_thermal

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--- Comment #4 from Martin Peres <martin.peres at ensi-bourges.fr> ---
(In reply to comment #2)
> thank you,
> 
> I (apparently) haven't noticed problems, at least no big problem
> 
> but deeply investigating I could notice a bad fan management (could be
> PTHERM related....)
The PTHERM error is harmless. I'll fix it though :) That's funny though
because
I was doing a round of PTHERM testing on nv50 and found this problem too.

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--- Comment #5 from Martin Peres <martin.peres at ensi-bourges.fr> ---
(In reply to comment #3)
> [    8.796597] nouveau  [  PTHERM][0000:01:00.0] fan management: disabled
> 
> If you want to enable it, take a look at
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/
> Documentation/thermal/nouveau_thermal
Oh, and for now, mattia.b89 will need to set the kernel parameter
nouveau.perflvl=7777.

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--- Comment #6 from mattia.b89 <mattia.b89 at gmail.com> ---
(In reply to comment #5)
> (In reply to comment #3)
> > [    8.796597] nouveau  [  PTHERM][0000:01:00.0] fan management:
disabled
> > 
> > If you want to enable it, take a look at
> > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/
> > Documentation/thermal/nouveau_thermal
> 
> Oh, and for now, mattia.b89 will need to set the kernel parameter
> nouveau.perflvl=7777.
to activate the fan management?

I see a mistake in the documentation: "Celcius" should be
"Celsius"

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--- Comment #7 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to comment #5)
> Oh, and for now, mattia.b89 will need to set the kernel parameter
> nouveau.perflvl=7777.
You undoubtedly meant nouveau.perflvl_wr=7777

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--- Comment #8 from mattia.b89 <mattia.b89 at gmail.com> ---
maybe this is not the right place to post, but it's the better I know....

with "nouveau.perflvl_wr=7777" every performance level I change I get
a crash:
PC become instantly unusable also with magic sysrq

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--- Comment #9 from Ilia Mirkin <imirkin at alum.mit.edu> ---
The suggestion was to enable perflvl_wr in order to modify the fan stuff.
Switching perf levels will often hang your machine, as you have discovered.
(Although NV92 with GDDR3 RAM... I thought that was supposed to be fine.)

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--- Comment #10 from mattia.b89 <mattia.b89 at gmail.com> ---
how can I manage fan ?

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--- Comment #11 from Ilia Mirkin <imirkin at alum.mit.edu> ---
As per my earlier comment, see
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/thermal/nouveau_thermal

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #12 from Ilia Mirkin <imirkin at alum.mit.edu> ---
The unhandled intr message should be fixed by:

http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=d8f0f534e649be351e290d4824cdcc4ce393e63c

So both of your original issues should be resolved. Marking as fixed.

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