audio lag - pulseaudio, jaunty 32bit desktop
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| pulseaudio (Ubuntu) |
Expired
|
Undecided
|
Unassigned | ||
Bug Description
The audio lags in rythmbox and on websites like youtube. on videos, the image also sometimes lags.
running
pulseaudio -k
"solves" the problem, hence the assumption that this is a pulseaudio bug.
Here's the hardware information(after having stopped pulseaudio), what type of additional information can I provide to help pinning this issue?
$ sudo lspci -s 00:1b.0 -vvv
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
Subsystem: Sony Corporation Device 9005
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 22
Region 0: Memory at fc400000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA PME(D0+
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
Address: 0000000000000000 Data: 0000
Capabilities: [70] Express (v1) Root Complex Integrated Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <64ns, L1 <1us
ExtTag- RBE- FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop+
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr+ TransPend-
LnkCap: Port #0, Speed unknown, Width x0, ASPM unknown, Latency L0 <64ns, L1 <1us
ClockPM- Suprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed unknown, Width x0, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
Capabilities: [100] Virtual Channel <?>
Capabilities: [130] Root Complex Link <?>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
EDIT :
I was a bit optimistic about "solving" the problem. it seems to only solve it for a limited time.
maybe this is some user/group setup problem(?)
$ pulseaudio --check
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.
N: main.c: Called SUID root and real-time and/or high-priority scheduling was requested in the configuration. However, we lack the necessary privileges:
N: main.c: We are not in group 'pulse-rt', PolicyKit refuse to grant us the requested privileges and we have no increase RLIMIT_
N: main.c: For enabling real-time/
$ pulseaudio --kill
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.
N: main.c: Called SUID root and real-time and/or high-priority scheduling was requested in the configuration. However, we lack the necessary privileges:
N: main.c: We are not in group 'pulse-rt', PolicyKit refuse to grant us the requested privileges and we have no increase RLIMIT_
N: main.c: For enabling real-time/
$ groups pulse
pulse audio pulse-rt
$ groups nickolai
nickolai adm dialout cdrom floppy audio dip video plugdev fuse lpadmin admin pulse-rt netdev mythtv vboxusers
$ groups root
root pulse-rt
originally none of the listed users were in the pulse-rt group, but adding them did not change anything to the error message. the audio seems ok after doing so... for now.
| description: | updated |
| Daniel T Chen (crimsun) wrote | #1 |
| Changed in pulseaudio (Ubuntu): | |
| status: | New → Incomplete |
| Nickolai (nickolai-toupikov-deri) wrote | #2 |
| Launchpad Janitor (janitor) wrote | #3 |
| Changed in pulseaudio (Ubuntu): | |
| status: | Incomplete → Expired |
please test themuso's ppa, which contains newer alsa-lib and pulseaudio.