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* apm standby on thinkpad
@ 2004-05-19 13:48 Alexander Mirgorodskiy
  2004-05-20 18:16 ` john stultz
  2004-05-23 19:08 ` Alexander Mirgorodskiy
  0 siblings, 2 replies; 4+ messages in thread
From: Alexander Mirgorodskiy @ 2004-05-19 13:48 UTC (permalink / raw)
  To: linux-kernel

Folks,

I ran into a problem with APM on a Thinkpad T41: the system cannot
properly resume after a standby. The backlight turns on, but the
screen remains blank. This happens on keypress (fn-f3) and
idle-time-induced standbys. However, resume after "apm -S" works just
fine.

I inserted some trace statements into the apm kernel driver and found
that it does not seem to receive standby and resume notifications from
BIOS if standby is initiated through fn-f3. At the same time, it does
receive the notification on a resume from "apm -S".

Any idea why that happens?

Thanks,
Alex

--

P.S: I see this on a RedHat 9 system with the 2.4.20 kernel. For a
bunch of reasons, I cannot upgrade to anything else in the short
term. (I did try 2.4.26, but it behaved even worse -- didn't wake up
at all, even if standby was entered with "apm -S")



^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2004-05-23 19:08 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-05-19 13:48 apm standby on thinkpad Alexander Mirgorodskiy
2004-05-20 18:16 ` john stultz
2004-05-20 21:23   ` Alexander Mirgorodskiy
2004-05-23 19:08 ` Alexander Mirgorodskiy

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