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    SubjectRe: [linux-pm] Linux 2.6.21-rc6
    Rafael J. Wysocki wrote:
    > On Sunday, 15 April 2007 17:14, David Brownell wrote:
    > > On Sunday 15 April 2007 4:16 am, Rafael J. Wysocki wrote:
    > > > On Sunday, 15 April 2007 10:02, Tobias Diedrich wrote:
    > >
    > > > > > > > Yes, it's a Asus M2N-SLI-Deluxe Mainboard with a Athlon64 3200+
    > > > > > > > single core CPU.
    > >
    > > And NVidia southbridge, so OHCI not UHCI (plus EHCI) ... one experiment
    > > would be to disable the EHCI (high speed USB) support in BIOS, to make
    > > for a simpler hardware configuration, and see if that makes BIOS happier.
    > > (Or better, just take EHCI out of your Linux config.) Likewise, taking
    > > the 8042 drivers out of Linux.
    > >
    > > I wouldn't be surprised if those factors didn't matter, but it'd be good
    > > to rule them out.
    >
    > I think the disabling of i8042 support might help.

    Still hangs with "# CONFIG_SERIO_I8042 is not set".

    > > > Dmitry, could you please have a look?
    > > >
    > > > > And I can now confirm that unpatched 2.6.21-rc6 works fine as long
    > > > > as USB legacy support is disabled (however without legacy support I
    > > > > can't use the USB keyboard to control grub).
    > > >
    > > > I think using the 'shutdown' mode of suspend would be better. There's a little
    > > > point in using 'platform' on desktop systems anyway.
    > > >
    > > > Frankly, I don't know what to do about it. If we move platform_finish() after
    > > > device_resume(), some systems may be broken ...
    > >
    > > What I'm curious about is exactly why the patch matters. What ACPI
    > > magic is being invoked to confuse, or unconfuse, those controllers?
    >
    > I think the patch helps, because it makes the ACPI magic be done while the
    > i8042's .resume() is being executed.
    >
    > Which makes me think the following patch might help:

    Unfortunately not, I tried this before disabling CONFIG_SERIO_I8042.

    > drivers/input/serio/i8042.c | 3 ++-
    > 1 file changed, 2 insertions(+), 1 deletion(-)
    >
    > Index: linux-2.6.21-rc6/drivers/input/serio/i8042.c
    > ===================================================================
    > --- linux-2.6.21-rc6.orig/drivers/input/serio/i8042.c 2007-04-07 12:15:19.000000000 +0200
    > +++ linux-2.6.21-rc6/drivers/input/serio/i8042.c 2007-04-15 18:30:01.000000000 +0200
    > @@ -846,7 +846,8 @@ static long i8042_panic_blink(long count
    > static int i8042_suspend(struct platform_device *dev, pm_message_t state)
    > {
    > if (dev->dev.power.power_state.event != state.event) {
    > - if (state.event == PM_EVENT_SUSPEND)
    > + if (state.event == PM_EVENT_SUSPEND
    > + || state.event == PM_EVENT_PRETHAW)
    > i8042_controller_reset();
    >
    > dev->dev.power.power_state = state;
    > -
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    >

    --
    Tobias PGP: http://9ac7e0bc.uguu.de
    このメールは十割再利用されたビットで作られています。
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