Messages in this thread | | | Date | Wed, 19 May 2004 08:48:35 -0500 | From | Alexander Mirgorodskiy <> | Subject | apm standby on thinkpad |
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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
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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")
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