Multiple problems on Thinkpad A31p

Richard Jelinek
2004-12-04T11:47:34Z

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 -
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