Hello, I have Mythbuntu Jaunty set up on an AMD 780G (Radeon 3200HD) motherboard (with integrated sound). It has HDMI and S/PDIF sound, but I just use the speaker-out to plug into the TV. We have been suffering through occasional freezes during playback for quite some time (it feels like it got a lot worse since the upgrade to Jaunty from 8.10). Sometimes I can Ctrl+Alt right-arrow to another screen and "killall mythfrontend.real", other times I can Ctrl+F1 and do the same (though this sometimes takes a few minutes to come up) and other times the system seems completely locked up and I have to hit the reset button. We have issues about every third or so time we try to watch a recording, so it is fairly frequent (given we watch all of our TV, videos and DVDs through the system). I have noticed that my mythfrontend.log files have a number of audio issues mentioned, often just before I had to restart the machine: 2009-08-15 14:52:46.798 WriteAudio: buffer underrun 2009-08-15 14:55:36.319 WriteAudio: buffer underrun Starting mythfrontend.real.. 2009-08-16 12:37:19.928 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:19.929 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! [Above error repeats once per microsecond until here] 2009-08-16 12:37:20.464 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.466 Video timing method: USleep with busy wait 2009-08-16 12:37:20.467 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.468 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.468 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.469 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.469 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.469 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.470 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.470 NVP::AddAudioData():p1: Audio buffer overflow, audio data lost! 2009-08-16 12:37:20.903 WriteAudio: buffer underrun 2009-08-16 12:37:22.068 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:23.669 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:25.270 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:26.871 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:28.472 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:30.073 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:31.674 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:33.275 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:34.876 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:36.477 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:38.078 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:39.680 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:41.281 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:42.882 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:44.483 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:46.084 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:47.686 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:49.287 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:50.888 NVP: Prebuffer wait timed out 10 times. 2009-08-16 12:37:52.495 NVP: Prebuffer wait timed out 10 times. Starting mythfrontend.real.. 2009-08-16 12:39:57.928 Opening ALSA audio device 'default'. 2009-08-16 12:39:57.947 ALSA, Warning: mmap not available, attempting to fall back to slow writes. I have quite a lot of: 2009-08-16 12:40:07.455 NVP: prebuffering pause 2009-08-16 13:18:24.291 Mixer unable to find control PCM 2009-08-16 13:22:16.202 DPMS Reactivated. 2009-08-16 13:22:16.529 WriteAudio: buffer underrun 2009-08-16 13:22:24.552 DPMS Deactivated 2009-08-16 13:22:31.491 Mixer unable to find control PCM unknown chip id 0x9610, can't guess. 2009-08-08 13:41:39.290 Opening ALSA audio device 'default'. I: caps.c: Limited capabilities successfully to CAP_SYS_NICE. I: caps.c: Dropping root privileges. I: caps.c: Limited capabilities successfully to CAP_SYS_NICE. 2009-08-08 13:41:40.758 ALSA, Warning: mmap not available, attempting to fall back to slow writes. 2009-08-14 20:36:48.752 DPMS Reactivated. 2009-08-14 20:36:49.118 WriteAudio: buffer underrun 2009-08-14 20:38:02.879 DPMS Deactivated 2009-08-14 20:40:53.537 DPMS Reactivated. 2009-08-14 20:40:54.007 WriteAudio: buffer underrun 2009-08-14 20:41:19.720 DPMS Deactivated Starting mythfrontend.real.. etc. etc. I have Googled these to bits for hours and am still at a bit of a loss. Most of the hits are people going unanswered. I am using the -ati xorg (radeon) driver. I checked the settings mentioned here: http://www.mythtv.org/wiki/Prebuffering_pause#Audio_Issues but they were all as directed. I removed PulseAudio to get rid of a segmentation fault: https://bugs.launchpad.net/bugs/414339 and hoped that it would fix this, but it didn't. An excerpt from my mythfrontend.log is: http://pastebin.com/f1c465489 In case it helps, my ALSA information is at: http://www.alsa-project.org/db/?f=9d908b5f109b56604caaf3c14968edf5e0bac43c Does anyone have any suggestions? Thanks in advance for your help! Aaron -- FSF Associate Member ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
