Displaying 3 results from an estimated 3 matches for "trace_debug_level".
2019 Oct 22
2
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...this check passes and does
some magic which is not clear to me. There is similar in PGON() side
which is used to turn the device back on.
You can check what actually happens when _ON()/_OFF() is called by
passing something like below to the kernel command line:
acpi.trace_debug_layer=0x80 acpi.trace_debug_level=0x10 acpi.trace_method_name=\_SB.PCI0.PEG0.PG00._ON acpi.trace_state=method
(See also Documentation/firmware-guide/acpi/method-tracing.rst).
Trace goes to system dmesg.
2019 Oct 22
0
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
...some magic which is not clear to me. There is similar in PGON() side
> which is used to turn the device back on.
>
> You can check what actually happens when _ON()/_OFF() is called by
> passing something like below to the kernel command line:
>
> acpi.trace_debug_layer=0x80 acpi.trace_debug_level=0x10 acpi.trace_method_name=\_SB.PCI0.PEG0.PG00._ON acpi.trace_state=method
>
> (See also Documentation/firmware-guide/acpi/method-tracing.rst).
>
> Trace goes to system dmesg.
This sounds to be very helpful, I'll give it a try.
2019 Oct 21
1
[PATCH v3] pci: prevent putting nvidia GPUs into lower device states on certain intel bridges
On Mon, Oct 21, 2019 at 5:46 PM Mika Westerberg
<mika.westerberg at intel.com> wrote:
>
> On Mon, Oct 21, 2019 at 04:49:09PM +0200, Karol Herbst wrote:
> > On Mon, Oct 21, 2019 at 4:09 PM Mika Westerberg
> > <mika.westerberg at intel.com> wrote:
> > >
> > > On Mon, Oct 21, 2019 at 03:54:09PM +0200, Karol Herbst wrote:
> > > > > I