Suspend to RAM freeze with kernel modesetting

Suspend to RAM freeze with kernel modesetting

[wferi]

Hi ACPI folks,

I'd like to solicit your opinion on the
https://bugs.freedesktop.org/show_bug.cgi?id=22126 issue.
In short, if I load the Intel graphics driver with kernel
modesetting enabled, my ThinkPad R50e won't suspend to RAM
anymore, it freezes instead (ie. does not enter S3).
Tracing seems to show that the freeze happens in a
particular line of drivers/acpi/acpica/hwsleep.c:

/* Run the _PTS method */
status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL);

in acpi_enter_sleep_state_prep, as described in the bug
report. Can anybody provide a clue why this happens?
Suspend to disk works invariably, just like suspend to RAM
until I enable the kernel modesetting by a module option.

Please Cc me or the bug report, I'm not subscribed to linux-acpi.

Thanks,
Feri.

Re: Suspend to RAM freeze with kernel modesetting

[ykzhao]

On Thu, 2009-10-08 at 09:40 +0800, wferi wrote:
> Hi ACPI folks,
> 
> I'd like to solicit your opinion on the
> https://bugs.freedesktop.org/show_bug.cgi?id=22126 issue.
> In short, if I load the Intel graphics driver with kernel
> modesetting enabled, my ThinkPad R50e won't suspend to RAM
> anymore, it freezes instead (ie. does not enter S3).
> Tracing seems to show that the freeze happens in a
> particular line of drivers/acpi/acpica/hwsleep.c:
> /* Run the _PTS method */
> status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL);
> 
> in acpi_enter_sleep_state_prep, as described in the bug
> report. Can anybody provide a clue why this happens?
> Suspend to disk works invariably, just like suspend to RAM
> until I enable the kernel modesetting by a module option.
Will you please attach the output of acpidump on your box?
Thanks.
> 
> Please Cc me or the bug report, I'm not subscribed to linux-acpi.
> 
> Thanks,
> Feri.
> --
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Re: Suspend to RAM freeze with kernel modesetting

[Wagner Ferenc]

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On Fri, 9 Oct 2009, ykzhao wrote:

> On Thu, 2009-10-08 at 09:40 +0800, wferi wrote:
>
>> I'd like to solicit your opinion on the
>> https://bugs.freedesktop.org/show_bug.cgi?id=22126 issue.
>> In short, if I load the Intel graphics driver with kernel
>> modesetting enabled, my ThinkPad R50e won't suspend to RAM
>> anymore, it freezes instead (ie. does not enter S3).
>> Tracing seems to show that the freeze happens in a
>> particular line of drivers/acpi/acpica/hwsleep.c:
>> /* Run the _PTS method */
>> status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL);
>>
>> in acpi_enter_sleep_state_prep, as described in the bug
>> report. Can anybody provide a clue why this happens?
>> Suspend to disk works invariably, just like suspend to RAM
>> until I enable the kernel modesetting by a module option.
>
> Will you please attach the output of acpidump on your box?

Sure, please find it attached (or ask Bugzilla for 
https://bugs.freedesktop.org/attachment.cgi?id=30231).
-- 
Regards,
Feri.

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