[ +cc linux-acpi ] On 03/07/2014 10:01 AM, Peter Senna Tschudin wrote: > On Thu, Mar 6, 2014 at 8:08 PM, Peter Hurley <peter@xxxxxxxxxxxxxxxxxx> wrote: >> On 03/06/2014 01:27 PM, Bjorn Helgaas wrote: >>> >>> [+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@xxxxxxxxx> 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. >> >> >> Windows 7 doesn't use x2apic mode. >> Windows 8 does and this same problem happened with this model: see >> http://forums.toshiba.com/t5/Windows-8-8-1/Resume-from-standby-issue-on-R830-PT321A-01K002/td-p/330110 > Thank you for the information. The model is similar to mine, probably > the same motherboard. My tests were with Windows 7. And more importantly, probably the same system firmware. >> Seems like your model was recently added to Toshiba's Windows 8 >> compatibility list: http://support.toshiba-tie.co.jp/windows8/list_au.htm >> >> Check for a more recent BIOS update that may fix this problem. > I do that weekly since February last year, and there are no updates > available. The bad news is that the model was discontinued, so it is > possible that there will be no more BIOS updates. I'll write to > Toshiba Europe GmbH asking for a fix, by my hopes in getting an answer > are low. Ok. >> >> Regards, >> Peter Hurley >> >> PS - kernel bugs are better filed on the kernel bugzilla >> https://bugzilla.kernel.org/ > Thank you! I would file it under ACPI; perhaps a simple means of determining this system firmware does not reliably support x2apic can be found (or perhaps not). Please read REPORTING-BUGS; the latest is here https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/REPORTING-BUGS?id=refs/tags/v3.14-rc5 Good luck, Peter Hurley _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
