[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

Aaron Lu <aaron.lu@intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|ACPICA-Core                 |Video(DRI - non Intel)
           Assignee|lv.zheng@intel.com          |drivers_video-dri@kernel-bu
                   |                            |gs.osdl.org
            Product|ACPI                        |Drivers

--- Comment #5 from Aaron Lu <aaron.lu@intel.com> ---
Moving to GPU for nouveau people to take a look.

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[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

Peter Wu <peter@lekensteyn.nl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |peter@lekensteyn.nl

--- Comment #6 from Peter Wu <peter@lekensteyn.nl> ---
The problem is that nouveau_switcheroo_optimus_dsm() unconditionally calls
function 0x1B ("NOUVEAU_DSM_OPTIMUS_FLAGS") without checking that this function
is actually supported. Lenovo's firmware decides to run into an infinite loop
in this case instead of returning an error code.

Proposed patch:
https://lkml.kernel.org/r/1463244575-3515-1-git-send-email-peter@lekensteyn.nl

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[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

--- Comment #7 from James <theholyettlz@googlemail.com> ---
(In reply to Peter Wu from comment #6)

> Proposed patch:
> https://lkml.kernel.org/r/1463244575-3515-1-git-send-email-peter@lekensteyn.
> nl

Sorry I didn't immediately spot your response. (Bad Google spam filter.) I
can't get the above link to work, please clarify and I'll try and remember how
to build a patched kernel (it's been a while...).

Thanks.

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[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

--- Comment #8 from Peter Wu <peter@lekensteyn.nl> ---
Apparently the mail is not found on that list, try this one:
https://lists.freedesktop.org/archives/nouveau/2016-May/025039.html

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[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

--- Comment #9 from James <theholyettlz@googlemail.com> ---
This patch does stop the infinite loop on my machine.

(Although now with or without it nouveau seems to cause delays starting GNOME
3, but that's another bug report.)

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[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

--- Comment #10 from Peter Wu <peter@lekensteyn.nl> ---
(In reply to James from comment #9)
> This patch does stop the infinite loop on my machine.

Cool, can I add your Tested-by: James <...@googlemail.com> to the patch?

> (Although now with or without it nouveau seems to cause delays starting
> GNOME 3, but that's another bug report.)

If it is a second or so, that is likely the card switching on or off. With or
without this patch you can disable the power saving by setting the module
option nouveau.runpm=0 (kernel cmdline) or "options nouveau runpm=0"
(modprobe.conf snippet). Do you still experience a delay after that?

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[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

--- Comment #11 from James <theholyettlz@googlemail.com> ---
(In reply to Peter Wu from comment #10)
> (In reply to James from comment #9)
> > This patch does stop the infinite loop on my machine.
> 
> Cool, can I add your Tested-by: James <...@googlemail.com> to the patch?

Yes you may. Please note I tested this patch against the current Fedora 23
kernel, 4.4.9-300.fc23.x86_64.

> > (Although now with or without it nouveau seems to cause delays starting
> > GNOME 3, but that's another bug report.)
> 
> If it is a second or so, that is likely the card switching on or off. With
> or without this patch you can disable the power saving by setting the module
> option nouveau.runpm=0 (kernel cmdline) or "options nouveau runpm=0"
> (modprobe.conf snippet). Do you still experience a delay after that?

It was more like 10 seconds. However the delay did disappear after using
runpm=0.

(I generally don't use the nVidia chip on this machine even under Windows, it's
an 820A on 4 PCIe lanes. I've not seen it show performance advantage over the
built-in Intel HD5500, I don't know why Lenovo bothered with it.)

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[Bug 104791] ACPI errors on Lenovo C50-30 (AE_AML_INFINITE_LOOP, argument type mismatch)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=104791

James Ettle (james@ettle.org.uk) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |CODE_FIX

--- Comment #12 from James Ettle (james@ettle.org.uk) ---
I've not seen this for a while now, using the Nvidia 820A on this machine seems
to be working OK. Closing, tested with kernel-5.6.16-300.fc32.x86_64.

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