On Fri, 19 Nov 2010, Ron Cococcia wrote: > Hello, > > I've been having a playback problem recently, and have been looking at > trying to determine the cause. On my PC, audio is playing continuously, > mostly for background noise. Recently I've been trying upgrade to a > newer PC, trying to keep things as similar as possible. For some reason > audio playback gets stuck after a long time (it repeats the last half > second of audio, and the player's time counter stops increasing). I can > stop the player and restart it again, and it will work for many hours. > I have the player set to use plughw:0,0 as the output. > > One of the behaviors I see in /proc/asound/card0/pcm0p/sub0/status is > that the hw_ptr and appl_ptr are very different: > > state: RUNNING > trigger_time: 154.109259874 > tstamp : 64590.994415958 > delay : 22048 > avail : 0 > avail_max : 0 > ----- > hw_ptr : 1444936032 > appl_ptr : 20352 > > > When I 'cat status' a number of times, the only field I see that changes > is the tstamp. I'm curious as to whether these ptr values are > reasonable after a long playback (and if an update to > alsa-lib/alsa-driver or tweaked parameter to a module might prevent it > from getting stuck). When I restart the player, I see that the ptr > values are more reasonable (hw_ptr + delay = appl_ptr). > > The OS is Debian Lenny, with alsa-driver and alsa-lib both at 1.0.19 (a > little older, will upgrade over the weekend if that should help) > The old PC had a VIA chipset/CPU, with the VIA 8237 controller and the > ALC655 codec. > The new PC has an Atom D525 chip, with the Realtek ALC662 rev1 HDA codec. Please, try the latest ALSA snapshot. There are many improvements in the ring buffer pointers handling. Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc. ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
