I have similar problems after upgrading from Hardy to Lucid. Sound always stops after playing movies or using other applications for a few seconds/minutes regardless of the application used (I broke the sound with mplayer, vlc, totem and even the Multimedia System Selector app sound test).
Once broken, I can get sound back if I restart pulseaudio with: $ pulseaudio --kill; pulseaudio --start Sound always worked well in Hardy except for some glitches regarding sound control. Each time sound breaks, I see this in syslog: Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: snd_pcm_delay() returned a value that is exceptionally large: 8574853690509206496 bytes (360287948221 ms). Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: Most likely this is a bug in the ALSA driver 'snd_hda_intel'. Please report this issue to the ALSA developers. Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: snd_pcm_dump(): Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: Soft volume PCM Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: Control: PCM Playback Volume Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: min_dB: -51 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: max_dB: 0 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: resolution: 256 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: Its setup is: Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: stream : CAPTURE Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: access : MMAP_INTERLEAVED Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: format : S16_LE Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: subformat : STD Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: channels : 2 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: rate : 48000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: exact rate : 48000 (48000/1) Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: msbits : 16 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: buffer_size : 96000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: period_size : 48000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: period_time : 1000000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: tstamp_mode : ENABLE Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: period_step : 1 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: avail_min : 48000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: period_event : 0 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: start_threshold : -1 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: stop_threshold : 6755399441055744000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: silence_threshold: 0 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: silence_size : 0 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: boundary : 6755399441055744000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: Slave: Hardware PCM card 0 'HDA VIA VT82xx' device 0 subdevice 0 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: Its setup is: Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: stream : CAPTURE Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: access : MMAP_INTERLEAVED Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: format : S16_LE Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: subformat : STD Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: channels : 2 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: rate : 48000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: exact rate : 48000 (48000/1) Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: msbits : 16 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: buffer_size : 96000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: period_size : 48000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: period_time : 1000000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: tstamp_mode : ENABLE Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: period_step : 1 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: avail_min : 48000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: period_event : 0 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: start_threshold : -1 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: stop_threshold : 6755399441055744000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: silence_threshold: 0 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: silence_size : 0 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: boundary : 6755399441055744000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: appl_ptr : 2880000 Apr 27 02:55:15 dermoth pulseaudio[32250]: alsa-util.c: hw_ptr : 1825528 As for the hardware I run on, you can see attachments for this bug which I reported today... https://bugs.launchpad.net/bugs/570454 dmesg doesn't show anything new besides these two pulseaudio segfaults which seems to have occurred during two of the numerous times I broke the sound while testing: [60980.859078] pulseaudio[27646]: segfault at 7fe6f35df1a0 ip 00007fe6f35df1a0 sp 00007fffffb95518 error 14 in pulse-shm-2848538534[7fe6f3c03000+4001000] [65109.280919] pulseaudio[874]: segfault at 7fd0f20fc1f0 ip 00007fd0f20fc1f0 sp 00007fffcca81438 error 14 in pulse-shm-4084731526[7fd0f2720000+4001000] Please let me know if you need more info. ** Tags added: lucid ** Changed in: alsa-driver (Ubuntu) Status: Incomplete => New -- alsa-util.c: snd_pcm_delay() returned a value that is exceptionally large: -4496252 bytes (-25488 ms). https://bugs.launchpad.net/bugs/464442 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
