At Mon, 19 Mar 2007 12:31:16 -0400, Rich Rattanni wrote: > > All: > > I have noticed a strange behaviour in the ALSA driver that seems to be > occur after initiating a power standby and resume. I am working on an > application that uses FusionSound to playback OGG audio files. When > the application recognizes it is idle, it tells the OS to enter > standby mode. Upon resuming from standby, the ALSA API call made by > fusionsound no longer acts as a blocking read, instead it returns > immediately. I have confirmed this with Denis Oliver Kropp of the > DirectFB / FusionSound project. He suggested that the ALSA driver > should be repaired to prevent this problem from occuring. It's not clear what is happening there. Do you have a small testcase? When the suspend/resume happens, the apps is usually requested to call snd_pcm_resume() and/or snd_pcm_prepare() appropriately to reset the stream. Otherwise the PCM status is kept as SUSPENDED. Takashi > > The system specifications are... > Linux - Openembedded distro linux kernel 2.6.20 > GCC - 4.1.1 > ALSA - 1.0.13-r1 > FusionSound - 0.9.26-r0 > > I guess I am looking for confirmation of this behavior with ALSA and > any possible suggestions to patch the driver to operate correctly with > power management functions under linux. > > Thanks in advance, > Rich > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-devel > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-devel
