Date: Fri, 22 Jun 2001 19:09:53 +0200 From: Maxime Henrion <mux@qualys.com> To: hackers@FreeBSD.org Cc: Farooq Mela <fmela0@sm.socccd.cc.ca.us> Subject: Re: Sound driver changes between 4.2 and 4.3 Message-ID: <20010622190953.E625@nebula.cybercable.fr> In-Reply-To: <3B3379BB.949592E3@sm.socccd.cc.ca.us> References: <3B3379BB.949592E3@sm.socccd.cc.ca.us>
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Farooq Mela wrote: > Hi -hackers, > > Several people have made it known to me that games such as Quake2 > which ran fine with sound under the 4.2 kernel are not able to have > sound in 4.3. I have verified this myself - with quake2 under 4.3 > ktrace reports that opening /dev/dsp fails with EBUSY - even though > nothing is using /dev/dsp and other programs are able to open it and > play sound just fine immediately afterwards. Under 4.2 on the same > machine, open()ing /dev/dsp is successful and sound functions. > Figuring out what's going wrong is further complicated by the fact > that these are linux binaries and run under the linux emulator. Could > it be the linux emulator messing something up, and not the sound card? > > Since this is an issue of the userland's interface to the sound driver > and is not concerned with sound driver internals or driving a specific > card (since this problem occurs regardless of sound card), I thought I > might try and see if could fix the problem. I've not done any kernel > programming before, but I'd like to get my feet wet and this seems > like a relatively small project. Any pointers as to where to start? > Anybody else run into similar problems and try to see what is going > wrong? I ran into these problems too. On my -CURRENT system, I'm unable to get sound with mtvp (running under Linux emulation), while it was working before. I've also seen a -STABLE box unable to open the /dev/dsp file (open returns EBUSY) although both fstat and lsof didn't see any process with this file opened. This second problem was happening even when trying to ``cat /dev/dsp'' so it's probably not be related to the Linux emulation. Hope it helps, Maxime -- Don't be fooled by cheap finnish imitations ; BSD is the One True Code Key fingerprint = F9B6 1D5A 4963 331C 88FC CA6A AB50 1EF2 8CBE 99D6 Public Key : http://www.epita.fr/~henrio_m/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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