Re: Bug/Oops Power Management with linux-2.6.0-test5-mm2

[Michael Frank <mhf@linuxmail.org>]

On Tuesday 16 September 2003 20:34, Ramon Casellas wrote:
> 
> The only problem now is that if I suspend, when resuming, neither the
> mouse nor the NIC works, but it's getting much better.
> 
> 
> with 
> echo -n disk > /sys/power/state
> 
> Stopping tasks: ===================================================================
>  stopping tasks failed (1 tasks remaining)
>  Restarting tasks...<6> Strange, artsd not stopped
>   done
> 
> IIRC, I only have to kill artsd before hibernating...
> 
> 

As to the mouse, i8042 wont survice suspend. Its a bit tricky
but reloading the module works. 

However I was unable to convince modprobe to load i8042 so it 
won't work before rc.sysinit runs.

1) You can use the little patch below

--- linux-2.6.0-test4-Vanilla/drivers/input/serio/Kconfig       2003-09-05 18:07:10.000000000 +0800
+++ linux-2.6.0-test5-mhf63/drivers/input/serio/Kconfig 2003-09-16 21:16:38.000000000 +0800
@@ -19,7 +19,7 @@
          as a module, say M here and read <file:Documentation/modules.txt>.

 config SERIO_I8042
-       tristate "i8042 PC Keyboard controller" if EMBEDDED || !X86
+       tristate "i8042 PC Keyboard controller"
        default y
        depends on SERIO
        ---help---

2) Config i8042 as a module in input device support
  CONFIG_SERIO_I8042=m

3) Add near top of rc.sysinit
  modprobe i8042

4) In your script Note you must use a script because once you
remove the module so goes the keyboard ;)

rmmod i8042
echo -n mem > /sys/power/state
modprobe i8042

As to the NIC, I suspect PCI interrupt links die.
  Note the output of /proc/interrupts _before_ and _after_
  suspend. 

  I expect the interrupts not to increase after suspend.

If other devices connected to PCI such as PCMCIA or USB (sound ?)
have trouble after suspend _and_ reloading the module does not 
work, this is the likely cause.

Regards
Michael