Date: Wed, 10 Sep 2008 02:08:42 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Rui Paulo <rpaulo@FreeBSD.org> Cc: freebsd-multimedia@FreeBSD.org Subject: Re: snd_hda suspend/resume support Message-ID: <48C701FA.8010807@FreeBSD.org> In-Reply-To: <20080909124811.GA35538@alpha.local> References: <1219692182.00003969.1219680004@10.7.7.3> <48B30A83.1030206@FreeBSD.org> <20080825204941.GA68247@alpha.local> <48C44BE0.5090500@FreeBSD.org> <20080908205502.GF89070@alpha.local> <48C5952F.5040805@FreeBSD.org> <20080908211715.GH89070@alpha.local> <48C66DDD.2010803@FreeBSD.org> <20080909124811.GA35538@alpha.local>
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Rui Paulo wrote: > On Tue, Sep 09, 2008 at 03:36:45PM +0300, Alexander Motin wrote: >> Rui Paulo wrote: >>> On Tue, Sep 09, 2008 at 12:12:15AM +0300, Alexander Motin wrote: >>>> Rui Paulo wrote: >>>>> Great work! This works fine! I just wish I didn't had to stop my media >>>>> player before resume. That probably needs more work on the sound layer. >>>> When I am calling suspend and resume myself on alive system for several >>>> seconds playback restores fine. Whats happening if you don't stop media >>>> player? >>> No sound is output after resume. I can't play anything after resume and >>> only a reboot fixes it (kldunload/kldload doesn't do the job). >> Any errors? Player progress bar is moving? What happens if you press >> stop and then play? > > No errors whatsoever. I hear nothing if I press stop and then play. I have changed suspend/resume sequences a bit. Now I am doing more complete codec power up on resume. On my system I am able to call suspend() and then 15 seconds later resume() call successfully restores the sound after complete HDA controller, bus and codecs. If you still have a problem - try to reproduce my experiment using temporal hack in a last version: sysctl dev.hdac.0.pindump=100 <= hdac_suspend() sysctl dev.hdac.0.pindump=101 <= hdac_resume() Also I have made suspend() to left HDA bus in reset state which saves about 200mW of power according to my laptop battery stats. -- Alexander Motin
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