From: Andreas Messer <andreas.messer@stud-mail.uni-wuerzburg.de>
To: linux-acpi@vger.kernel.org
Subject: 2.6.21 -- polling /proc/acpi/battery/*/state breaks ibm_acpi
Date: Mon, 14 May 2007 13:53:54 +0200 [thread overview]
Message-ID: <20070514115354.GA16885@proton> (raw)
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Hello,
Up to Kernel 2.6.20 ibm_acpi was working fine on my TP X21.
At least all Fn + <?> Keys worked. Now, since 2.6.21 it generally
works but: When some Application is polling /proc/acpi/battery/*/state,
the Fn - Keys (and perhaps the Lid-Button) became disfunctional until
the next reboot. (Terminating the App didn't help)
I can also produce the problem with a simple loop on cmd-line:
while true; do cat /proc/acpi/battery/BAT0/state; done
I figured out, that after system boot I can do a
cat /proc/acpi/battery/BAT0/state for at least 3 times without
breaking ibm_acpi. But then suddenly the keys FN - Keys are dead.
greetings
Andreas
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next reply other threads:[~2007-05-14 12:21 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-14 11:53 Andreas Messer [this message]
2007-05-15 3:04 ` 2.6.21 -- polling /proc/acpi/battery/*/state breaks ibm_acpi Henrique de Moraes Holschuh
2007-05-15 20:18 ` [solved] " Andreas Messer
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