#456: Crackling intead of sound when tunneling
-----------------------+----------------------------------------------------
Reporter: spitfire | Owner: lennart
Type: defect | Status: new
Priority: normal | Milestone:
Component: daemon | Severity: normal
Resolution: | Keywords:
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Comment (by mgrela):
Sorry for double posting, I had to add formatting (evil wiki ;).
I'm having a similar issue. The only difference is that instead of
crackling I get silence. I'm using two machines - ix and 4pll00555. The ix
is the home server with speakers connected to it. The other one I will
refer as "laptop" because it is a Thinkpad T61p. I have exported the ix's
soundcard by enabling zeroconf-publish and manually adding module-native-
tcp with authentication disabled. The ix's card is properly detected on
the laptop (using an autoconfigured tunnel). When I launch a player
application supporting pulseaudio (I've tested mplayer and rhythmbox) it
plays back audio correctly through the local pulseaudio server. However,
when I run pavucontrol and try to move the stream to ix the playback
stops. During the freeze the following messages in the logs:
ix:
{{{
Feb 1 20:42:09 ix pulseaudio[4554]: sink-input.c: Requesting rewind due
to uncorking
Feb 1 20:42:09 ix pulseaudio[4554]: module-suspend-on-idle.c: Sink
alsa_output.pci_8086_266e_sound_card_0_alsa_playback_0 becomes busy.
Feb 1 20:42:09 ix pulseaudio[4554]: module-alsa-sink.c: Requested to
rewind 65536 bytes.
Feb 1 20:42:09 ix pulseaudio[4554]: module-alsa-sink.c: Limited to 536
bytes.
Feb 1 20:42:09 ix pulseaudio[4554]: module-alsa-sink.c: before: 134
Feb 1 20:42:09 ix pulseaudio[4554]: module-alsa-sink.c: after: 134
Feb 1 20:42:09 ix pulseaudio[4554]: module-alsa-sink.c: Rewound 536
bytes.
Feb 1 20:42:09 ix pulseaudio[4554]: sink.c: Processing rewind...
Feb 1 20:42:09 ix pulseaudio[4554]: sink-input.c: Have to rewind 536
bytes on render memblockq.
Feb 1 20:42:09 ix pulseaudio[4554]: sink-input.c: Have to rewind 536
bytes on render memblockq.
Feb 1 20:42:09 ix pulseaudio[4554]: protocol-native.c: Requesting rewind
due to end of underrun.
Feb 1 20:42:11 ix pulseaudio[4554]: protocol-native.c: Requesting rewind
due to end of underrun.
Feb 1 20:42:12 ix pulseaudio[4554]: protocol-native.c: Requesting rewind
due to end of underrun.
Feb 1 20:42:14 ix pulseaudio[4554]: protocol-native.c: Requesting rewind
due to end of underrun.
Feb 1 20:42:15 ix pulseaudio[4554]: protocol-native.c: Requesting rewind
due to end of underrun.
Feb 1 20:42:17 ix pulseaudio[4554]: protocol-native.c: Requesting rewind
due to end of underrun.
Feb 1 20:42:18 ix pulseaudio[4554]: protocol-native.c: Requesting rewind
due to end of underrun.
Feb 1 20:42:20 ix pulseaudio[4554]: protocol-native.c: Requesting rewind
due to end of underrun.
}}}
laptop:
{{{
Feb 1 21:26:11 4pll00555 pulseaudio[15301]: module-tunnel.c: Server
signalled buffer overrun/underrun.
Feb 1 21:26:11 4pll00555 pulseaudio[15301]: module-tunnel.c: Server
reports playback started.
Feb 1 21:26:11 4pll00555 pulseaudio[15301]: module-tunnel.c: Server
signalled buffer overrun/underrun.
Feb 1 21:26:11 4pll00555 pulseaudio[15301]: module-tunnel.c: Server
reports playback started.
Feb 1 21:26:11 4pll00555 pulseaudio[15301]: module-tunnel.c: Server
signalled buffer overrun/underrun.
Feb 1 21:26:12 4pll00555 pulseaudio[15301]: module-tunnel.c: Server
reports playback started.
Feb 1 21:26:12 4pll00555 pulseaudio[15301]: module-tunnel.c: Server
signalled buffer overrun/underrun.
}}}
When I move the stream back to my local soundcard on the laptop the audio
starts playing again. The interesting part is that, when I launch mplayer
or rhythmbox and connect directly to ix's server using PULSE_SERVER env
variable the audio plays fine. I have tried to test for this problem with
both tsched=0 in module-detect-hal parameters and without it - no effect.
Both of the boxes run Gentoo and the software on them is as follows:
{{{
4pll00555 (laptop):
Kernel: 2.6.28-gentoo
alsa-stuff:
[I--] [ ~] media-libs/alsa-lib-1.0.19 (0)
[I--] [ ~] media-plugins/alsa-plugins-1.0.19 (0)
[I--] [ ~] media-sound/alsa-headers-1.0.19 (0)
[I--] [ ~] media-sound/alsa-utils-1.0.19 (0.9)
pulseaudio:
[I--] [ ~] media-sound/pulseaudio-0.9.14 (0)
}}}
{{{
ix (server):
kernel: 2.6.28-gentoo-ix
alsa-stuff:
[I--] [M~] media-libs/alsa-lib-1.0.19 (0)
[I--] [M~] media-sound/alsa-headers-1.0.19 (0)
[I--] [M~] media-sound/alsa-utils-1.0.19 (0.9)
pulseaudio: [I--] [M~] media-sound/pulseaudio-0.9.14 (0)
}}}
The hardware on ix is:
{{{
00:00.0 Host bridge: Intel Corporation 82915G/P/GV/GL/PL/910GL Memory
Controller Hub (rev 04)
00:01.0 PCI bridge: Intel Corporation 82915G/P/GV/GL/PL/910GL PCI Express
Root Port (rev 04)
00:02.0 VGA compatible controller: Intel Corporation 82915G/GV/910GL
Integrated Graphics Controller (rev 04)
00:02.1 Display controller: Intel Corporation 82915G Integrated Graphics
Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family)
PCI Express Port 1 (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #3 (rev 03)
00:1d.3 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB UHCI #4 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) USB2 EHCI Controller (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d3)
00:1e.2 Multimedia audio controller: Intel Corporation
82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller (rev 03)
00:1f.0 ISA bridge: Intel Corporation 82801FB/FR (ICH6/ICH6R) LPC
Interface Bridge (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6
Family) IDE Controller (rev 03)
00:1f.2 IDE interface: Intel Corporation 82801FB/FW (ICH6/ICH6W) SATA
Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus
Controller (rev 03)
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5751
Gigabit Ethernet PCI Express (rev 01)
}}}
spitfire: Can you provide some info on your sw and hw configurations ?
Maybe we're having a similar issue.
Best regards,
Maciej Grela
--
Ticket URL: <http://www.pulseaudio.org/ticket/456#comment:4>
PulseAudio <http://pulseaudio.org/>
The PulseAudio Sound Server
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