This command doesn't work, it says "aplay: set_params:1239: Channels count non available". The -D default:CARD=CA0106 variant works and it does not overrun. I only had overruns on recording (at least, explicit). That said, I've made a huge improvement in my system, I compiled a pf- kernel and set CONFIG_PREEMPT=y, CONFIG_HZ_1000=y and CONFIG_HZ=1000. The default Debian kernel is on 250 Hz and is not preemptible. Now that my kernel supports preemption I (crossing fingers) don't have ALSA over- and underruns anymore. They were quite sudden and audible as clicks/gaps. I saw this in the log:
Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: Scheduling delay of 11.42 ms > 11.31 ms, you might want to investigate this to improve latency... Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: Underrun! Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: Increasing minimal latency to 1.00 ms Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: Latency set to 21.33ms Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: hwbuf_unused=57352 Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: setting avail_min=7651 Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: Latency set to 21.33ms Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: hwbuf_unused=57352 Jan 4 20:25:15 homecomp pulseaudio[26848]: [alsa-sink-ca0106] alsa-sink.c: setting avail_min=7651 With the preempt kernel this doesn't happen at all (I grepped the log) and sound is just as good as with pure ALSA. However, arecord still drops overrun for CA0106. It doesn't do it for PCH (ALC889) though. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1315212 Title: [CA0106 - CA0106, playback] Playback problem - Surround dies, no valid output Status in ALSA driver: Confirmed Status in alsa-driver package in Ubuntu: Incomplete Bug description: This is tested against a Creative Labs Sounblaster live! (sb0410) card and a SoundBlaster Audigy se (sb0570). Both of them behave strangely, output coming through some, but not all speakers, etc. This was working in 13.10 under the sb0410. the ca0106 driver is the same for both cards. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic i686 ApportVersion: 2.14.1-0ubuntu3 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: joshp 30385 F.... pulseaudio /dev/snd/controlC0: joshp 30385 F.... pulseaudio CurrentDesktop: Unity Date: Thu May 1 21:37:12 2014 InstallationDate: Installed on 2014-04-28 (3 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release i386 (20140417) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:CA0106 failed Symptom_Card: Built-in Audio - Intel ICH6 Symptom_Type: None of the above Title: [CA0106 - CA0106, playback] Playback problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/03/2006 dmi.bios.vendor: Dell Inc. dmi.bios.version: A08 dmi.board.name: 0G8310 dmi.board.vendor: Dell Inc. dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA08:bd03/03/2006:svnDellInc.:pnOptiPlexGX280:pvr:rvnDellInc.:rn0G8310:rvr:cvnDellInc.:ct3:cvr: dmi.product.name: OptiPlex GX280 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/alsa-driver/+bug/1315212/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
