#491: Crackling, skipping and /var/log/messages spamming
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Reporter: liviopl | Owner: lennart
Type: defect | Status: new
Priority: normal | Milestone: 0.9.15
Component: daemon | Severity: major
Keywords: |
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My hardware has recently changed twice and problems still exist.
VIA8235 (snd-via82xx) → VIA8237 (actually C-Media CMI9761A; snd-via82xx
too) → Creative Sound Blaster Audigy SE (snd-ca0106)
You can't tell me it's hardware question, because the hardware is first
quality.
Also, NVIDIA's driver and Ralink's WiFi firmware aren't the problem. PA <
0.9.10 had no problems with crackling and skipping at all. Some rewrites
might have happened in between.
All the time I'm having the >= 0.9.10, PA is spamming (almost every
second!) in /var/log/messages with:
[[[ ALSA woke us up to write new data to the device, but there was
actually nothing to write! ]]]
tsched=0 makes PA crackle even more.
--
openSUSE 11.1, PA 0.9.14 from a testrepo (to try out if bug appears in
non-distro version; 0.9.13 is shipped).
client.conf: no options set.
daemon.conf: http://wklej.org/id/55927/
default.pa : http://wklej.org/id/55929/
--
lspci -vvv info about the soundcard:
[[[ 00:0c.0 Multimedia audio controller: Creative Labs SB Audigy LS
Subsystem: Creative Labs SB0570 [SB Audigy SE]
Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 32 (500ns min, 5000ns max)
Interrupt: pin A routed to IRQ 16
Region 0: I/O ports at d400 [size=32]
Capabilities: <access denied>
Kernel driver in use: CA0106
Kernel modules: snd-ca0106 ]]]
--
/proc/asound/cards:
[[[ 0 [CA0106 ]: CA0106 - CA0106
Audigy SE [SB0570] at 0xd400 irq 16 ]]]
PS: Onboard card (C-Media CMI9761A disabled in BIOS).
--
/proc/asound/version:
Advanced Linux Sound Architecture Driver Version 1.0.17.
--
Interesting is that when I turn on "CAPTURE feedback" playback control on,
PA crackles when I'm typiing, scrolling etc.
Also, any SDL app makes PA go crazy, regardless of SDL_AUDIODRIVER.
SDL_AUDIODRIVER=esd makes PA crackle less than in SDL_AUDIODRIVER=pulse
mode. Funny.
--
If more info needed, just ask.
--
Ticket URL: <http://pulseaudio.org/ticket/491>
PulseAudio <http://pulseaudio.org/>
The PulseAudio Sound Server
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