# New evidence suggests this problem is mplayer-specific. reassign 575844 mplayer found 575844 1.0~rc3+svn20090405-1+b1 thanks
Consider the following transcript. First, we generate a test file: $ mplayer -really-quiet -ao pcm:fast -vo null -vc null http://he3.magnatune.com/all/01-Aurore-Gerard%20Satamian-lofi.mp3 Plain aplay works: $ sleep 10 && sudo tee <<<mem /sys/power/state & aplay audiodump.wav [1] 5764 Playing WAVE 'audiodump.wav' : Signed 16 bit Little Endian, Rate 22050 Hz, Stereo mem Suspended. Trying resume. Done. underrun!!! (at least -1270530282992.973 ms long) C-c C-cAborted by signal Interrupt... [1]+ Done sleep 10 && sudo tee /sys/power/state <<< mem Hmm, this works, too, though the delay between resuming the system and the audio continuing to play is much longer than with aplay. $ sleep 10 && sudo tee <<<mem /sys/power/state & mplayer -noconsolecontrols -quiet audiodump.wav [1] 2832 MPlayer SVN-r29142-4.4.3 (C) 2000-2009 MPlayer Team Playing audiodump.wav. Audio only file format detected. ========================================================================== Opening audio decoder: [pcm] Uncompressed PCM audio decoder AUDIO: 22050 Hz, 2 ch, s16le, 705.6 kbit/100.00% (ratio: 88200->88200) Selected audio codec: [pcm] afm: pcm (Uncompressed PCM) ========================================================================== AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample) Video: no video Starting playback... mem [AO_ALSA] Pcm in suspend mode, trying to resume. [AO_ALSA] alsa-lib: pcm_hw.c:709:(snd_pcm_hw_resume) SNDRV_PCM_IOCTL_RESUME failed: Function not implemented C-c C-c MPlayer interrupted by signal 2 in module: play_audio Exiting... (Quit) [1]+ Done sleep 10 && sudo tee /sys/power/state <<< mem But this doesn't: $ sleep 10 && sudo tee <<<mem /sys/power/state & mplayer audiodump.wav [1] 5698 MPlayer SVN-r29142-4.4.3 (C) 2000-2009 MPlayer Team Playing audiodump.wav. Audio only file format detected. ========================================================================== Opening audio decoder: [pcm] Uncompressed PCM audio decoder AUDIO: 22050 Hz, 2 ch, s16le, 705.6 kbit/100.00% (ratio: 88200->88200) Selected audio codec: [pcm] afm: pcm (Uncompressed PCM) ========================================================================== AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample) Video: no video Starting playback... mem [AO_ALSA] Pcm in suspend mode, trying to resume. [AO_ALSA] alsa-lib: pcm_hw.c:709:(snd_pcm_hw_resume) SNDRV_PCM_IOCTL_RESUME failed: Function not implemented C-c C-c MPlayer interrupted by signal 2 in module: play_audio C-c C-c MPlayer interrupted by signal 2 in module: play_audio [1]+ Done sleep 10 && sudo tee /sys/power/state <<< mem This makes me suspect some part of mplayer's terminal interaction code. These tests were done within Emacs' M-x shell, where TERM=dumb and stdio is connected to a tty (i.e. "test -t 0 -a -t 1 -a -t 2" passes). The behaviour above is consistent for kernels linux-image-2.6.32-3-amd64 (2.6.32-9) and linux-image-2.6.33-2-amd64 (2.6.33-1~experimental.4). For each, alsa-info.sh yields http://www.alsa-project.org/db/?f=3d1754592d25ecf773a04984473c7eefeda581de http://www.alsa-project.org/db/?f=df81bc3978db0e9a08685581da7614548dd41acc -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org