>> #4 >> #5 This is unlikely to be the cause of the problem. It looks like pulseaudio attempts all possible configurations for devices when loading them to find out which ones work.
I've noticed that I get the same "floating point exception" when attempting to use the a52 plugin without pulseaudio running at all ("pulse" device in this list is the alsa plugin that is configured by default, not actually part of pusleaudio). :~$ aplay -Ll null Discard all samples (playback) or generate zero samples (capture) pulse PulseAudio Sound Server default:CARD=PCH HDA Intel PCH, ALC892 Analog Default Audio Device sysdefault:CARD=PCH HDA Intel PCH, ALC892 Analog Default Audio Device front:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog Front speakers surround40:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Digital IEC958 (S/PDIF) Digital Audio Output dmix:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog Direct sample mixing device dmix:CARD=PCH,DEV=1 HDA Intel PCH, ALC892 Digital Direct sample mixing device dsnoop:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog Direct sample snooping device dsnoop:CARD=PCH,DEV=1 HDA Intel PCH, ALC892 Digital Direct sample snooping device hw:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog Direct hardware device without any conversions hw:CARD=PCH,DEV=1 HDA Intel PCH, ALC892 Digital Direct hardware device without any conversions plughw:CARD=PCH,DEV=0 HDA Intel PCH, ALC892 Analog Hardware device with all software conversions plughw:CARD=PCH,DEV=1 HDA Intel PCH, ALC892 Digital Hardware device with all software conversions a52:CARD=PCH HDA Intel PCH hdmi:CARD=NVidia,DEV=0 HDA NVidia, HDMI 0 HDMI Audio Output hdmi:CARD=NVidia,DEV=1 HDA NVidia, HDMI 1 HDMI Audio Output dmix:CARD=NVidia,DEV=3 HDA NVidia, HDMI 0 Direct sample mixing device dmix:CARD=NVidia,DEV=7 HDA NVidia, HDMI 1 Direct sample mixing device dsnoop:CARD=NVidia,DEV=3 HDA NVidia, HDMI 0 Direct sample snooping device dsnoop:CARD=NVidia,DEV=7 HDA NVidia, HDMI 1 Direct sample snooping device hw:CARD=NVidia,DEV=3 HDA NVidia, HDMI 0 Direct hardware device without any conversions hw:CARD=NVidia,DEV=7 HDA NVidia, HDMI 1 Direct hardware device without any conversions plughw:CARD=NVidia,DEV=3 HDA NVidia, HDMI 0 Hardware device with all software conversions plughw:CARD=NVidia,DEV=7 HDA NVidia, HDMI 1 Hardware device with all software conversions a52:CARD=NVidia HDA NVidia a52:CARD=IVTV0 IVTV-0 **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 :~$ speaker-test -Da52:CARD=PCH -c6 speaker-test 1.0.27.1 Playback device is a52:CARD=PCH Stream parameters are 48000Hz, S16_LE, 6 channels Using 16 octaves of pink noise Rate set to 48000Hz (requested 48000Hz) Buffer size range from 3072 to 15360 Period size range from 1536 to 1536 Using max buffer size 15360 Periods = 4 Floating point exception (core dumped) This problem seems to be caused in ALSA or the plugins package, but I don't know how to diagnose it any further. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1242390 Title: ac-53 (a52 plugin) core dumps To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1242390/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs