Multiple problems on Thinkpad A31p

Multiple problems on Thinkpad A31p

[Richard Jelinek]

Hi,

I recently installed a 2.6-kernel based distro on my Notebook, an IBM
Thinkpad A31p. More precisely the kernel calls itself
2.6.8-24.5-default which translates to

rj@sol:~> cat /proc/acpi/info
version:                 20040715

Now one should know, that the previous 2.4.26 kernel, with APM worked
good for my needs which was to be able to send the machine to some
suspend-to-ram mode when closing the lid and bringing it safely back
again opening the lid.

Now well - ACPI is default in the distro so I went for some
configuration. The good news:

I finally managed to get the machine to go to S3 when closing the lid
and it also comes up relatively safe again (after garbling the screen
a little bit and some slowness for the first 10-20 seconds after
resume).

Also, S5(?) seems to work when pressing the suspend-to-disk button it
purges unnecessary blocks and saves the content to swap. On boot it
recognizes there is something in swap and restores the saved state.

End of good news.

* S1 doesn't do anything. Well ok - let's look at the others.

* Closing the lid, the machine goes down and the "moon"-led goes on
  indicating the suspend state. All is quiet, however, the machine
  generates significant heat. Examining the situation, all fans, the
  HD etc. are switched off, even the display, but some second after
  the display has been switched off completely, THE BACKLIGHT GOES ON
  AGAIN! Uhhh... So after 2hours in this "suspend" mode, the battery
  is just 70% charged. (Took 8hours with APM)

  Even worse, the external (USB Radio) mouse doesn't work
  anymore. Neither did the ethernet (e100), but somehow I managed to
  configure it (mungled the PCI latencies of the ethernet controller),
  so that ethernet is not lost after S3 resume. And there's no way to
  bring the mouse back to life again but reboot. The internal PS/2
  mouse (trackpoint) works fine.

* S5 works as described, unfortunately after resume, the clock shows
  exactly the time, when the shutdown did happen.

--------




-- 
best regards,

     Dipl.-Inf. Richard Jelinek

     - The PetaMem Group - Prague/Nuremberg - www.petamem.com -
		       -= 3394928 Mind Units =-


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Re: Multiple problems on Thinkpad A31p

[Matthew Garrett]

On Sat, 2004-12-04 at 12:47 +0100, Richard Jelinek wrote:

> * Closing the lid, the machine goes down and the "moon"-led goes on
>   indicating the suspend state. All is quiet, however, the machine
>   generates significant heat. Examining the situation, all fans, the
>   HD etc. are switched off, even the display, but some second after
>   the display has been switched off completely, THE BACKLIGHT GOES ON
>   AGAIN! Uhhh... So after 2hours in this "suspend" mode, the battery
>   is just 70% charged. (Took 8hours with APM)

Not all hardware seems to switch the backlight off sensibly on entering
ACPI suspend. Your suspend script probably tries to trigger the X DPMS
call, which will blank the screen - the kernel then switches back to a
console and turns the backlight on again. Can you try the program
attached to 
http://bugzilla.kernel.org/show_bug.cgi?id=2576 ?

>   Even worse, the external (USB Radio) mouse doesn't work
>   anymore. Neither did the ethernet (e100), but somehow I managed to
>   configure it (mungled the PCI latencies of the ethernet controller),
>   so that ethernet is not lost after S3 resume. And there's no way to
>   bring the mouse back to life again but reboot. The internal PS/2
>   mouse (trackpoint) works fine.

2.6.9 has better USB power management.

> * S5 works as described, unfortunately after resume, the clock shows
>   exactly the time, when the shutdown did happen.

I think this has been fixed, but I don't know whether it'll hit 2.6.10.
Adding hwclock --hctosys in the resume script ought to work around it.

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org



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Re: Multiple problems on Thinkpad A31p

[Richard Jelinek]

Hi Garett,

thanks for your answer.

On Sun, Dec 05, 2004 at 02:06:07AM +0000, Matthew Garrett wrote:
> Not all hardware seems to switch the backlight off sensibly on entering
> ACPI suspend. Your suspend script probably tries to trigger the X DPMS
> call, which will blank the screen - the kernel then switches back to a
> console and turns the backlight on again. Can you try the program
> attached to 
> http://bugzilla.kernel.org/show_bug.cgi?id=2576 ?

downloaded, renamed (comes as attachement.cgi with Firefox 1.0)

standby, suspend & off: switch the display off completely - no backlight
reduced: no effect
on: switches screen on again

Don't know whether there should be more parameters, the syntax
description doesn't end with a ']'

What do the results tell us?

> 2.6.9 has better USB power management.

Hopefully it handles then Unplug (DVD-RAM) & Plug (USB-Craddle for
Palm) of the Ultrabay as good as the 2.4.26 did: without freezing the
machine. ;-)

> I think this has been fixed, but I don't know whether it'll hit 2.6.10.
> Adding hwclock --hctosys in the resume script ought to work around it.

Ok.

-- 
best regards,

     Dipl.-Inf. Richard Jelinek

     - The PetaMem Group - Prague/Nuremberg - www.petamem.com -
		       -= 3394928 Mind Units =-


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Read honest & candid reviews on hundreds of IT Products from real users.
Discover which products truly live up to the hype. Start reading now. 
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Re: Multiple problems on Thinkpad A31p

[Matthew Garrett]

On Sun, 2004-12-05 at 16:20 +0100, Richard Jelinek wrote:

> standby, suspend & off: switch the display off completely - no backlight
> reduced: no effect
> on: switches screen on again
> 
> Don't know whether there should be more parameters, the syntax
> description doesn't end with a ']'
> 
> What do the results tell us?

Ok, that's good. In your sleep script, you probably want to do something
like:

CONSOLE=`fgconsole`
chvt 12
dpms off
echo -n mem >/sys/power/state
dpms on
chvt $CONSOLE

> > 2.6.9 has better USB power management.
> 
> Hopefully it handles then Unplug (DVD-RAM) & Plug (USB-Craddle for
> Palm) of the Ultrabay as good as the 2.4.26 did: without freezing the
> machine. ;-)

I've had no real problems with it.

-- 
Matthew Garrett | mjg59-1xO5oi07KQx4cg9Nei1l7Q@public.gmane.org



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