[Nouveau] Acer Aspire V7-582PG (Haswell, GTX 750M) fails to power off GPU via Power Resources
lv.zheng at intel.com
Sat Oct 29 00:49:27 UTC 2016
> From: linux-acpi-owner at vger.kernel.org [mailto:linux-acpi-owner at vger.kernel.org] On Behalf Of Mika
> Subject: Re: Acer Aspire V7-582PG (Haswell, GTX 750M) fails to power off GPU via Power Resources
> On Fri, Oct 28, 2016 at 02:30:41PM +0200, Peter Wu wrote:
> > It was correctly applied. I did some testing with QEMU, it seems that
> > the \_OSI check is problematic. Removing it makes things work again.
> I hope Bob and Lv can answer why _OSI fails.
> In the meantime I think we should check flags.power_resources in nouveau
> driver (in addition to _PR3) so that it falls back to _DSM if there are
> no power resources (or if we failed to evaluate them for some reason).
IMO, the problem wasn't _OSI, the problem was "If".
"If" is module level here.
So execution order of it in current Linux upstream may be different from Windows.
You can try to modify acpi_gbl_parse_table_as_term_list to TRUE.
To see if this can be solved.
Thanks and best regards
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