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Newsgroups: comp.unix.bsd.freebsd.misc Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.bhp.com.au!mel.dit.csiro.au!munnari.OZ.AU!news.hawaii.edu!ames!olivea!quack!quack.kfu.com!nsayer From: nsayer@quack.kfu.com (Nick Sayer) Subject: Zenith laptop sound problem fixed Message-ID: <nrgqdto@quack.kfu.com> Sender: news@quack.kfu.com (0000-News(0000)) Organization: The Duck Pond public unix, +1 408 249 9630, log in as guest. Date: Thu, 13 Jun 1996 20:16:55 UTC Lines: 33 Well, I don't know if 'fixed' is a better term to use than 'worked around', but here it is. :-) The Zenith laptop I've got has a MS Sound System compatable audio device in it. In order to get it to work under FreeBSD (every RELEASE and SNAP I've tried - 2.0.5-RELEASE through 960501) I've had the same problems. The only way to get it to work at all is put an '#if 0 / #endif' pair around ALL of probe_ms_sound() except for the last line, which is a call to ad1848_detect(). I tried to isolate it better than that, but it seems that this particular unit fails all of the tests other than the one for the actual chip itself. That was half the battle. The other half was that once you got it to probe it would always squeal whenever it was used. It turns out that this is because the line MIX_ENT(SOUND_MIXER_IMIX, 13, 1, 2, 6, 0, 0, 0, 0), in ad1848_mixer.h caused the mixer value to be inverted for the record monitor (the '1' is the flag for this). For this particular unit, that 1 needs to be turned into a 0. Having done all of this, there are no problems that I can detect. recording and playing back all work, xmix works... touchdown. -- Nick Sayer <nsayer@quack.kfu.com> | Choose one only: N6QQQ @ N0ARY.#NORCAL.CA.USA.NOAM | +1 408 249 9630, log in as 'guest' | ___ Trickle-down economics URL: http://www.kfu.com/~nsayer/ | ___ Trickle-down taxes