Re: Polling /proc/apm causes usb hiccups and clock drift

Thomas Hood (jdthood@mail.com)
25 Sep 2002 05:48:51 -0400


James D Strandboge <jstrand1@rochester.rr.com> wrote:
> polling /proc/apm causes the webcam in xawtv to skip.
> [...]
> Is this a kernel apm bug or BIOS problem?

The apm driver calls the APM BIOS with interrupts disabled
each time /proc/apm is read. This appears to be taking
too much time away from video processing.

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