Handling GeForce GTX 850M GPU on Arch Linux

Handling GeForce GTX 850M GPU on Arch Linux

[caocoa-ruvOiOuSH0dWk0Htik3J/w]

Hello all,

I've juste installed a new computer and I feel like I'm having trouble
with my NVIDIA GPU but it could be something else so I've enclosed
detailed output. As you can see in [lspci] output, my GPU is `NVIDIA
Corporation GM107M [GeForce GTX 850M] (rev a2)` whose specification can be
found in [specs].

The trouble I'd like to solve has the following symptoms:
 --> Sometimes during booting process, it issues a lot of lines like
`nouveau E[   PFIFO][0000:01:00.0] SCHED_ERROR [ UNK06 ]` (see [dmesg]
output for full details). This seems to appear randomly: sometimes the
computer has to reboot automatically two or three times before being able
to boot correctly, sometimes it just needs once and doesn't have nay
troubles.
 --> Some other times, windows appear to stop responding with no
reasons. I have to move the pointer off so the window display will
unfreeze and then I can put the pointer over again. I've found it seems to
be related to lines like this one `nouveau E[   PIBUS][0000:01:00.0] HUB0:
0x000001 0x00000002 (0xbad00100)` in [dmesg]. It starts at timestamp
28.115820.
 --> Sometimes, even my window manager (Gnome 3) freezes and I have to
go to a tty to have a chance to unfreeze it. It doesn't always work
then sometimes I have to reboot my computer because it has become
absolutely frozen (no mouse, no keyboard, even the keyboard CAPS light
responds no more).

I'm quite puzzled by this and I don't know whether the last symptom is a
bug or a feature (maybe multiple user simultaneous outputs). I've also
enclosed for your information my [Xorg.0.log] file and [lsmod] output. One
suggested me to share that with nouveau mailing list: maybe you don't have
any GeForce GTX 850M to test. I would agree to take time and perform test
for you if it can help to improve the way driver nouveau handles recent
GPU :)

Just feel free to ask any further data you'd need about my configuration.

Thank you in advance for you reply and have a good week!

Caocoa

--- references
[lspci] https://pastee.org/mtwkr
[specs] http://www.geforce.com/hardware/notebook-gpus/geforce-gtx-850m
[dmesg] https://pastee.org/zd4tt
[lsmod] https://pastee.org/t5z4e
[Xorg.0.log] https://pastee.org/r5tak



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Re: Handling GeForce GTX 850M GPU on Arch Linux

[Ilia Mirkin]

Your errors are most likely due to:

[    2.421428] nouveau  [     PFB][0000:01:00.0] RAM size: 1975398418 MiB

I'm guessing you don't *actually* have 1.9PB of VRAM. At least one
other person with a GM108 was seeing a similar issue. You're getting a
bunch of other failed reads, looks like we're somehow not bringing the
card up properly. The most immediate "fix" is to just disable nouveau
entirely -- boot with nouveau.modeset=0.

Cheers,

  -ilia


On Sun, May 17, 2015 at 2:31 PM,  <caocoa@mail2tor.com> wrote:
> Hello all,
>
> I've juste installed a new computer and I feel like I'm having trouble
> with my NVIDIA GPU but it could be something else so I've enclosed
> detailed output. As you can see in [lspci] output, my GPU is `NVIDIA
> Corporation GM107M [GeForce GTX 850M] (rev a2)` whose specification can be
> found in [specs].
>
> The trouble I'd like to solve has the following symptoms:
>  --> Sometimes during booting process, it issues a lot of lines like
> `nouveau E[   PFIFO][0000:01:00.0] SCHED_ERROR [ UNK06 ]` (see [dmesg]
> output for full details). This seems to appear randomly: sometimes the
> computer has to reboot automatically two or three times before being able
> to boot correctly, sometimes it just needs once and doesn't have nay
> troubles.
>  --> Some other times, windows appear to stop responding with no
> reasons. I have to move the pointer off so the window display will
> unfreeze and then I can put the pointer over again. I've found it seems to
> be related to lines like this one `nouveau E[   PIBUS][0000:01:00.0] HUB0:
> 0x000001 0x00000002 (0xbad00100)` in [dmesg]. It starts at timestamp
> 28.115820.
>  --> Sometimes, even my window manager (Gnome 3) freezes and I have to
> go to a tty to have a chance to unfreeze it. It doesn't always work
> then sometimes I have to reboot my computer because it has become
> absolutely frozen (no mouse, no keyboard, even the keyboard CAPS light
> responds no more).
>
> I'm quite puzzled by this and I don't know whether the last symptom is a
> bug or a feature (maybe multiple user simultaneous outputs). I've also
> enclosed for your information my [Xorg.0.log] file and [lsmod] output. One
> suggested me to share that with nouveau mailing list: maybe you don't have
> any GeForce GTX 850M to test. I would agree to take time and perform test
> for you if it can help to improve the way driver nouveau handles recent
> GPU :)
>
> Just feel free to ask any further data you'd need about my configuration.
>
> Thank you in advance for you reply and have a good week!
>
> Caocoa
>
> --- references
> [lspci] https://pastee.org/mtwkr
> [specs] http://www.geforce.com/hardware/notebook-gpus/geforce-gtx-850m
> [dmesg] https://pastee.org/zd4tt
> [lsmod] https://pastee.org/t5z4e
> [Xorg.0.log] https://pastee.org/r5tak
>
>
>
> _______________________________________________
> Nouveau mailing list
> Nouveau@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/nouveau
_______________________________________________
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Re: Handling GeForce GTX 850M GPU on Arch Linux

[poma]

On 18.05.2015 01:46, Ilia Mirkin wrote:
> Your errors are most likely due to:
> 
> [    2.421428] nouveau  [     PFB][0000:01:00.0] RAM size: 1975398418 MiB
> 
> I'm guessing you don't *actually* have 1.9PB of VRAM. At least one
> other person with a GM108 was seeing a similar issue. You're getting a
> bunch of other failed reads, looks like we're somehow not bringing the
> card up properly. The most immediate "fix" is to just disable nouveau
> entirely -- boot with nouveau.modeset=0.
> 
> Cheers,
> 
>   -ilia
> 


As the IGPs "tend" to "steal" system memory:

[   21.733864] nouveau  [     PFB][0000:01:00.0] RAM type: stolen system memory
[   21.733883] nouveau  [     PFB][0000:01:00.0] RAM size: 256 MiB
[   21.787222] nouveau  [     DRM] VRAM: 256 MiB

can we reverse the process in this case, and "steal" a few GB of VRAM for a system memory?
I mean there are more than enough.


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Re: Handling GeForce GTX 850M GPU on Arch Linux

[caocoa-ruvOiOuSH0dWk0Htik3J/w]

Ok thanks, I'll keep to it for now. Would you like me to (try to) fill a
bug report report for that?
By the way, if you come to work on that bug, I'll be glad to experiment
your solution on my machine :)

Caocoa

> On 18.05.2015 01:46, Ilia Mirkin wrote:
>> Your errors are most likely due to:
>>
>> [    2.421428] nouveau  [     PFB][0000:01:00.0] RAM size: 1975398418
>> MiB
>>
>> I'm guessing you don't *actually* have 1.9PB of VRAM. At least one
>> other person with a GM108 was seeing a similar issue. You're getting a
>> bunch of other failed reads, looks like we're somehow not bringing the
>> card up properly. The most immediate "fix" is to just disable nouveau
>> entirely -- boot with nouveau.modeset=0.
>>
>> Cheers,
>>
>>   -ilia
>>
>
>
> As the IGPs "tend" to "steal" system memory:
>
> [   21.733864] nouveau  [     PFB][0000:01:00.0] RAM type: stolen system
> memory
> [   21.733883] nouveau  [     PFB][0000:01:00.0] RAM size: 256 MiB
> [   21.787222] nouveau  [     DRM] VRAM: 256 MiB
>
> can we reverse the process in this case, and "steal" a few GB of VRAM for
> a system memory?
> I mean there are more than enough.
>
>
>


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Re: Handling GeForce GTX 850M GPU on Arch Linux

[Ben Skeggs]

On 20 May 2015 at 17:11,  <caocoa@mail2tor.com> wrote:
> Ok thanks, I'll keep to it for now. Would you like me to (try to) fill a
> bug report report for that?
> By the way, if you come to work on that bug, I'll be glad to experiment
> your solution on my machine :)
A bug report would be great.

Could you also attach a mmiotrace[1] of the NVIDIA binary driver, and
another log of nouveau failing with "nouveau.debug=trace
log_buf_len=1M" in your kernel boot options.

Thanks,
Ben.

[1] http://nouveau.freedesktop.org/wiki/MmioTrace/

>
> Caocoa
>
>> On 18.05.2015 01:46, Ilia Mirkin wrote:
>>> Your errors are most likely due to:
>>>
>>> [    2.421428] nouveau  [     PFB][0000:01:00.0] RAM size: 1975398418
>>> MiB
>>>
>>> I'm guessing you don't *actually* have 1.9PB of VRAM. At least one
>>> other person with a GM108 was seeing a similar issue. You're getting a
>>> bunch of other failed reads, looks like we're somehow not bringing the
>>> card up properly. The most immediate "fix" is to just disable nouveau
>>> entirely -- boot with nouveau.modeset=0.
>>>
>>> Cheers,
>>>
>>>   -ilia
>>>
>>
>>
>> As the IGPs "tend" to "steal" system memory:
>>
>> [   21.733864] nouveau  [     PFB][0000:01:00.0] RAM type: stolen system
>> memory
>> [   21.733883] nouveau  [     PFB][0000:01:00.0] RAM size: 256 MiB
>> [   21.787222] nouveau  [     DRM] VRAM: 256 MiB
>>
>> can we reverse the process in this case, and "steal" a few GB of VRAM for
>> a system memory?
>> I mean there are more than enough.
>>
>>
>>
>
>
> _______________________________________________
> Nouveau mailing list
> Nouveau@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/nouveau
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Re: Handling GeForce GTX 850M GPU on Arch Linux

[caocoa-ruvOiOuSH0dWk0Htik3J/w]

OK, I'll do that when I'll have a bit more free time, but likely within
the 10 next days. Shall I fill the report on this site[1] ?

I've read this page[2], I'll try to comply to your needs :)

Caocoa

[1] https://bugs.freedesktop.org
[2] https://wiki.freedesktop.org/nouveau/Bugs/

> On 20 May 2015 at 17:11,  <caocoa@mail2tor.com> wrote:
>> Ok thanks, I'll keep to it for now. Would you like me to (try to) fill a
>> bug report report for that?
>> By the way, if you come to work on that bug, I'll be glad to experiment
>> your solution on my machine :)
> A bug report would be great.
>
> Could you also attach a mmiotrace[1] of the NVIDIA binary driver, and
> another log of nouveau failing with "nouveau.debug=trace
> log_buf_len=1M" in your kernel boot options.
>
> Thanks,
> Ben.
>
> [1] http://nouveau.freedesktop.org/wiki/MmioTrace/


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Re: Handling GeForce GTX 850M GPU on Arch Linux

[caocoa-ruvOiOuSH0dWk0Htik3J/w]

OK, I'll do that when I'll have a bit more free time, but likely within
the 10 next days. Shall I fill the report on this site[1] ?

I've read this page[2], I'll try to comply to your needs :)

Caocoa

[1] https://bugs.freedesktop.org
[2] https://wiki.freedesktop.org/nouveau/Bugs/

P.S.: I've previously sent this message only to the last replier instead
of the mailing list, here I fix it.

> On 20 May 2015 at 17:11,  <caocoa@mail2tor.com> wrote:
>> Ok thanks, I'll keep to it for now. Would you like me to (try to) fill a
>> bug report report for that?
>> By the way, if you come to work on that bug, I'll be glad to experiment
>> your solution on my machine :)
> A bug report would be great.
>
> Could you also attach a mmiotrace[1] of the NVIDIA binary driver, and
> another log of nouveau failing with "nouveau.debug=trace
> log_buf_len=1M" in your kernel boot options.
>
> Thanks,
> Ben.
>
> [1] http://nouveau.freedesktop.org/wiki/MmioTrace/
>
>>
>> Caocoa
>>
>>> On 18.05.2015 01:46, Ilia Mirkin wrote:
>>>> Your errors are most likely due to:
>>>>
>>>> [    2.421428] nouveau  [     PFB][0000:01:00.0] RAM size: 1975398418
>>>> MiB
>>>>
>>>> I'm guessing you don't *actually* have 1.9PB of VRAM. At least one
>>>> other person with a GM108 was seeing a similar issue. You're getting a
>>>> bunch of other failed reads, looks like we're somehow not bringing the
>>>> card up properly. The most immediate "fix" is to just disable nouveau
>>>> entirely -- boot with nouveau.modeset=0.
>>>>
>>>> Cheers,
>>>>
>>>>   -ilia
>>>>
>>>
>>>
>>> As the IGPs "tend" to "steal" system memory:
>>>
>>> [   21.733864] nouveau  [     PFB][0000:01:00.0] RAM type: stolen
>>> system
>>> memory
>>> [   21.733883] nouveau  [     PFB][0000:01:00.0] RAM size: 256 MiB
>>> [   21.787222] nouveau  [     DRM] VRAM: 256 MiB
>>>
>>> can we reverse the process in this case, and "steal" a few GB of VRAM
>>> for
>>> a system memory?
>>> I mean there are more than enough.
>>>
>>>
>>>
>>
>>
>> _______________________________________________
>> Nouveau mailing list
>> Nouveau@lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/nouveau
>


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Re: Handling GeForce GTX 850M GPU on Arch Linux

[Pierre Moreau]

[-- Attachment #1.1: Type: text/plain, Size: 2839 bytes --]

Your first reply did also sent it to the mailing list. :-)

[1] is indeed the correct site to report the bug, with Product=xorg and Component=Driver/nouveau.

Pierre


> On 21 May 2015, at 16:48, caocoa-ruvOiOuSH0dWk0Htik3J/w@public.gmane.org wrote:
> 
> OK, I'll do that when I'll have a bit more free time, but likely within
> the 10 next days. Shall I fill the report on this site[1] ?
> 
> I've read this page[2], I'll try to comply to your needs :)
> 
> Caocoa
> 
> [1] https://bugs.freedesktop.org
> [2] https://wiki.freedesktop.org/nouveau/Bugs/
> 
> P.S.: I've previously sent this message only to the last replier instead
> of the mailing list, here I fix it.
> 
>> On 20 May 2015 at 17:11,  <caocoa-ruvOiOuSH0dWk0Htik3J/w@public.gmane.org> wrote:
>>> Ok thanks, I'll keep to it for now. Would you like me to (try to) fill a
>>> bug report report for that?
>>> By the way, if you come to work on that bug, I'll be glad to experiment
>>> your solution on my machine :)
>> A bug report would be great.
>> 
>> Could you also attach a mmiotrace[1] of the NVIDIA binary driver, and
>> another log of nouveau failing with "nouveau.debug=trace
>> log_buf_len=1M" in your kernel boot options.
>> 
>> Thanks,
>> Ben.
>> 
>> [1] http://nouveau.freedesktop.org/wiki/MmioTrace/
>> 
>>> 
>>> Caocoa
>>> 
>>>> On 18.05.2015 01:46, Ilia Mirkin wrote:
>>>>> Your errors are most likely due to:
>>>>> 
>>>>> [    2.421428] nouveau  [     PFB][0000:01:00.0] RAM size: 1975398418
>>>>> MiB
>>>>> 
>>>>> I'm guessing you don't *actually* have 1.9PB of VRAM. At least one
>>>>> other person with a GM108 was seeing a similar issue. You're getting a
>>>>> bunch of other failed reads, looks like we're somehow not bringing the
>>>>> card up properly. The most immediate "fix" is to just disable nouveau
>>>>> entirely -- boot with nouveau.modeset=0.
>>>>> 
>>>>> Cheers,
>>>>> 
>>>>>  -ilia
>>>>> 
>>>> 
>>>> 
>>>> As the IGPs "tend" to "steal" system memory:
>>>> 
>>>> [   21.733864] nouveau  [     PFB][0000:01:00.0] RAM type: stolen
>>>> system
>>>> memory
>>>> [   21.733883] nouveau  [     PFB][0000:01:00.0] RAM size: 256 MiB
>>>> [   21.787222] nouveau  [     DRM] VRAM: 256 MiB
>>>> 
>>>> can we reverse the process in this case, and "steal" a few GB of VRAM
>>>> for
>>>> a system memory?
>>>> I mean there are more than enough.
>>>> 
>>>> 
>>>> 
>>> 
>>> 
>>> _______________________________________________
>>> Nouveau mailing list
>>> Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
>>> http://lists.freedesktop.org/mailman/listinfo/nouveau
>> 
> 
> 
> _______________________________________________
> Nouveau mailing list
> Nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
> http://lists.freedesktop.org/mailman/listinfo/nouveau


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