[pulseaudio-discuss] Why do I keep finding crashes?

[Arun Raghavan]

On Mon, 2013-08-12 at 02:42 -0400, Weedy wrote:
> Hello again, I've gotten better at back traces.
> 
> I: [pulseaudio] module.c: Loaded "module-alsa-card" (index: #5;
> argument: "device_id="0" name="pci-0000_00_1b.0"
> card_name="alsa_card.pci-0000_00_1b.0" namereg_fail=false tsched=yes
> fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes
> card_properties="module-udev-detect.discovered=1"").
> I: [pulseaudio] module-udev-detect.c: Card
> /devices/pci0000:00/0000:00:1b.0/sound/card0
> (alsa_card.pci-0000_00_1b.0) module loaded.
> D: [pulseaudio] module-udev-detect.c: /dev/snd/controlC1 is accessible: yes
> D: [pulseaudio] module-udev-detect.c:
> /devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1:1.2/sound/card1 is busy: no
> D: [pulseaudio] module-udev-detect.c: Loading module-alsa-card with
> arguments 'device_id="1" name="usb-HP_HP_Webcam_3110-02-H3110"
> card_name="alsa_card.usb-HP_HP_Webcam_3110-02-H3110" namereg_fail=false
> tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes
> use_ucm=yes card_properties="module-udev-detect.discovered=1"'
> D: [pulseaudio] reserve-wrap.c: Successfully acquired reservation lock
> on device 'Audio1'
> I: [pulseaudio] utils.c: could not open configuration file
> /usr/share/alsa/ucm/HP Webcam 3110/HP Webcam 3110.conf
> I: [pulseaudio] parser.c: error: could not parse configuration for card
> HP Webcam 3110
> I: [pulseaudio] main.c: error: failed to import HP Webcam 3110 use case
> configuration -2
> I: [pulseaudio] alsa-ucm.c: UCM not available for card HP Webcam 3110
> D: [pulseaudio] alsa-mixer.c: Looking at profile input:analog-mono
> D: [pulseaudio] alsa-mixer.c: Checking for recording on Analog Mono
> (analog-mono)
> D: [pulseaudio] alsa-util.c: Trying hw:1 with SND_PCM_NO_AUTO_FORMAT ...
> D: [pulseaudio] alsa-util.c: Managed to open hw:1
> D: [pulseaudio] alsa-util.c: Maximum hw buffer size is 11888 ms
> 
> Program received signal SIGSEGV, Segmentation fault.
> [Switching to Thread 0x7fffed2aa700 (LWP 14479)]
> snd_pcm_area_silence (dst_area=dst_area at entry=0x7fffed2a9c50,
> dst_offset=dst_offset at entry=15566, samples=2, samples at entry=17202,
> format=format at entry=SND_PCM_FORMAT_S16_LE)
>     at
> /var/tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm.c:2571
> 2571
> /var/tmp/portage/media-libs/alsa-lib-1.0.27.2/work/alsa-lib-1.0.27.2/src/pcm/pcm.c:
> No such file or directory.

As Tanu mentioned, this is an alsa-lib bug. It should have been fixed in
1.0.27.2. Are you able to reproduce the problem reliably?

Cheers,
Arun