Subject: Re: things I noticed with NetBSD on my laptop
To: None <current-users@NetBSD.ORG>
From: Wolfgang Rupprecht <firstname.lastname@example.org>
Date: 07/18/1998 09:55:28
email@example.com (Jukka Marin) writes:
> I'm also having problems with the ym sound driver. When mpg123 opens the
> driver, I hear several clicks from the speakers and everything on the
> machine stops for a moment. During this stop, I get ethernet receive
> buffer overruns and the mouse pointer isn't moving etc. This doesn't
> happen with .au files, AFAIK.
This appears to be related to a bug in the ad1848 driver. Turning on
debugging (audio and ad1848) gets one this printout.
ad1848: Auto calibration timed out(2)
This happens on any ioctl that sets an ad1848 register. Mpg123 just
tries to set a large number of registers, so its much more obvious.
During the timeout the cpu is busy-waiting, so I'd expect all sorts of
slowdowns and dropped interrupts. (Observed on an Intel AL440LX
motherboard w. 333Mhz cpu and yamaha chip.)
Wolfgang Rupprecht <firstname.lastname@example.org>