My Kernel bug is celebrating 2 years. Can you help me fix it?

Bjorn Helgaas bhelgaas at google.com
Thu Mar 6 13:27:58 EST 2014


[+cc Stoney, Yinghai, Suresh, Joerg, Jiang, Pavel, Rafael, linux-pm]

Let's add some folks who know about x2apic and VT-d.  It's hard for
people to magically pick stuff out of the LKML firehose :)

On Tue, Mar 4, 2014 at 2:26 PM, Peter Senna Tschudin
<peter.senna at gmail.com> wrote:
> I have reported a bug more than two years ago and it is still
> affecting me. The bug report gives some information:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=787299
>
> I have tried basic debug instructions from:
> https://www.kernel.org/doc/Documentation/power/basic-pm-debugging.txt
>
> And everything works as expected when:
> # echo freeze > /sys/power/state
> # echo disk > /sys/power/state
>
> I have asked for help for fixing it:
> https://lkml.org/lkml/2013/11/1/186
>
> But I don't have a serial port. How can I debug this issue without a
> "real" serial port? Or what else can I try? How can I explore the hint
> about the problem only happening with VT-d enabled in BIOS? How can I
> explore the hint about the problem not happening if the option
> nox2apic is passed to the Kernel?
>
> Thank you,
>
> Peter
>
> P.S Yes, it works on Windows.
>
> --
> Peter
> --
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