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    SubjectRe: [2.6.23] IBM X41 looses time after Suspend2Disk
    Date
    On Tuesday, 30 October 2007 09:35, Philipp Matthias Hahn wrote:
    > Hello Rafael, Pavel!
    >
    > Thank you both for the fast help.
    >
    > On Mon, Oct 29, 2007 at 10:05:10PM +0100, Rafael J. Wysocki wrote:
    > > On Monday, 29 October 2007 21:19, Philipp Matthias Hahn wrote:
    > > > I have an IBM X41 tablet pc running 2.6.23 with the following problem:
    > > > Suspend2Ram work fine, but when I do a Suspend2Disk (echo disk >
    > > > /sys/power/state), the notebook hangs showing the following lines:
    > ...
    > > > Suspending console(s)
    > > >
    > > > When I repeatedly press some keys or move the TrackPoint, the SwSusp
    > > > continues and the notebook powers off.
    > > > On reboot, the notebook resumes but hangs showing the following screen:
    > ...
    > > > Suspending console(s)
    > > >
    > > > Generating interrupts by pressing keys or moving the TrackPoints makes
    > > > the resume continue. But after that, the notebook looses time, xterms
    > > > don't get updated until I press a key, the beeper beeps until I press a
    > > > key, etc.
    > ...
    > > Please try to do "echo shutdown > /sys/power/disk" before hibernation and
    > > see what happens.
    >
    > I'm already doing that.

    Well, have you tried doing "echo platform > /sys/power/disk" before hibernation
    instead?

    > > Also, is it an SMP kernel or UP?
    >
    > UP.
    >
    >
    > On Mon, Oct 29, 2007 at 10:24:14PM +0100, Pavel Machek wrote:
    > > Yep, I seen that before. Try "nohz=off".
    >
    > Okay, that seems to solve the "timer loosing time after resume" problem.
    >
    >
    > But I still need to press some keys on suspend (7-12 key presses and
    > releases) to unhang it. On resume not key presses are needed any more.
    >
    > During on suspend-resume cycle ACPI barfed afer resume spewing messages
    > without end (error during execution of methode \...THM, error evaulation
    > operand ...) I had to remove the battery and pull the power-plug to
    > reboot it.

    The ACPI platform firmware got confused, apparently.

    Greetings,
    Rafael
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