Hi, On 21-03-17 08:54, Arun Raghavan wrote: > On Tue, 21 Mar 2017, at 11:10 AM, Takashi Iwai wrote: >> On Tue, 21 Mar 2017 00:09:22 +0100, >> Pierre-Louis Bossart wrote: >>> >>> On 3/20/17 4:52 AM, Takashi Iwai wrote: >>>> On Mon, 20 Mar 2017 12:42:58 +0100, >>>> Hans de Goede wrote: >>>>> >>>>> Hi, >>>>> >>>>> Lately I've been working on fixing various issues people >>>>> are having with baytrail / cherrytrail devices. One thing >>>>> I noticed when moving my testing / development to 4.11 is >>>>> that pulseaudio does not work (it aborts while starting) >>>>> this seemed to be caused by the new snd_hdmi_lpe_audio >>>>> module. If I blacklist that all is fine. Any idea what >>>>> is causing this ? >>>> >>>> I noticed it once, too, but I had no time to check further. >>>> More interestingly, PA works fine when LPE audio is the single driver >>>> (i.e. blacklist Intel SST instead), too. So it's more likely a bug in >>>> PA. >>>> >>>> What happens when you modprobe LPE audio driver after starting the >>>> session? If it kills PA, we can debug more easily :) >>> >>> I've seen this as well, I could get either one of the two but not >>> both, could this be due to the fact that one set of mixers is >>> configured with UCM and the other driver isn't configured by UCM? >> >> No idea, and I had still no time to check (still processing the >> pile of pending mails and other bugs :). Let me add PA guys to Cc. > > Not sure if anyone here has the hardware and I haven't seen any > complaints either -- having a backtrace (or even location of the assert) > would be a good start. Ok, this is weird. Since you were asking for more info I tried to collect a backtrace / logs. But what is happening is that after the snd_hdmi_lpe_audio module loads, pulse does its thing and then exits with a message of "killed" in gdb / on the terminal from which I started it. I don't get a chance to get a backtrace in gdb ... So this does feel like a kernel bug to me, normally this sort of "killed" behavior is seen on some kernel oopses... But dmesg is free of any oopses ? Anyways here is a log of pulseaudio -v first without the hdmi module and then the module gets probed. Where the log abruptly ends is where I got the "Killed" message on the terminal. I: [pulseaudio] main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted I: [pulseaudio] main.c: setrlimit(RLIMIT_RTPRIO, (9, 9)) failed: Operation not permitted I: [pulseaudio] core-util.c: Successfully gained nice level -11. I: [pulseaudio] main.c: This is PulseAudio 10.0 I: [pulseaudio] main.c: Page size is 4096 bytes I: [pulseaudio] main.c: Machine ID is ea8812c830d64c42bbac77fda93c3850. I: [pulseaudio] main.c: Session ID is 2. I: [pulseaudio] main.c: Using runtime directory /run/user/1000/pulse. I: [pulseaudio] main.c: Using state directory /home/hans/.config/pulse. I: [pulseaudio] main.c: Using modules directory /usr/lib64/pulse-10.0/modules. I: [pulseaudio] main.c: Running in system mode: no W: [pulseaudio] pid.c: Stale PID file, overwriting. I: [pulseaudio] main.c: System supports high resolution timers I: [pulseaudio] cpu-x86.c: CPU flags: CMOV MMX SSE SSE2 SSE3 SSSE3 SSE4_1 SSE4_2 I: [pulseaudio] svolume_mmx.c: Initialising MMX optimized volume functions. I: [pulseaudio] remap_mmx.c: Initialising MMX optimized remappers. I: [pulseaudio] svolume_sse.c: Initialising SSE2 optimized volume functions. I: [pulseaudio] remap_sse.c: Initialising SSE2 optimized remappers. I: [pulseaudio] sconv_sse.c: Initialising SSE2 optimized conversions. I: [pulseaudio] svolume_orc.c: Initialising ORC optimized volume functions. I: [pulseaudio] module-device-restore.c: Successfully opened database file '/home/hans/.config/pulse/ea8812c830d64c42bbac77fda93c3850-device-volumes'. I: [pulseaudio] module.c: Loaded "module-device-restore" (index: #0; argument: ""). I: [pulseaudio] module-stream-restore.c: Successfully opened database file '/home/hans/.config/pulse/ea8812c830d64c42bbac77fda93c3850-stream-volumes'. I: [pulseaudio] module.c: Loaded "module-stream-restore" (index: #1; argument: ""). I: [pulseaudio] module-card-restore.c: Successfully opened database file '/home/hans/.config/pulse/ea8812c830d64c42bbac77fda93c3850-card-database'. I: [pulseaudio] module.c: Loaded "module-card-restore" (index: #2; argument: ""). I: [pulseaudio] module.c: Loaded "module-augment-properties" (index: #3; argument: ""). I: [pulseaudio] module.c: Loaded "module-switch-on-port-available" (index: #4; argument: ""). I: [pulseaudio] alsa-ucm.c: UCM available for card chtrt5645 I: [pulseaudio] alsa-ucm.c: Set UCM verb to HiFi I: [pulseaudio] module-alsa-card.c: Found UCM profiles I: [pulseaudio] alsa-ucm.c: Set ucm verb to HiFi I: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_buffer_size_near() failed: Invalid argument I: [pulseaudio] alsa-util.c: Device hw:chtrt5645 doesn't support 44100 Hz, changed to 48000 Hz. I: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_buffer_size_near() failed: Invalid argument I: [pulseaudio] alsa-util.c: Device hw:chtrt5645 doesn't support 44100 Hz, changed to 48000 Hz. I: [pulseaudio] alsa-util.c: Successfully attached to mixer 'hw:chtrt5645' I: [pulseaudio] alsa-ucm.c: UCM jack Headphones has_control=0 I: [pulseaudio] alsa-ucm.c: UCM jack Speaker has_control=0 I: [pulseaudio] alsa-util.c: Successfully attached to mixer 'hw:chtrt5645' I: [pulseaudio] alsa-ucm.c: UCM jack Headset Mic has_control=1 I: [pulseaudio] alsa-ucm.c: UCM jack DMic has_control=0 I: [pulseaudio] alsa-ucm.c: UCM jack Mic has_control=0 I: [pulseaudio] module-card-restore.c: Restoring port latency offsets for card alsa_card.platform-cht-bsw-rt5645. I: [pulseaudio] alsa-util.c: Successfully attached to mixer 'hw:0' I: [pulseaudio] card.c: Created 0 "alsa_card.platform-cht-bsw-rt5645" I: [pulseaudio] alsa-ucm.c: Set UCM verb to HiFi I: [pulseaudio] alsa-util.c: Cannot disable ALSA period wakeups I: [pulseaudio] alsa-util.c: Device hw:chtrt5645 doesn't support 44100 Hz, changed to 48000 Hz. I: [pulseaudio] alsa-util.c: ALSA period wakeups were not disabled I: [pulseaudio] alsa-sink.c: Successfully opened device hw:chtrt5645. I: [pulseaudio] alsa-sink.c: Selected mapping 'Headphones + Speaker' (HiFi: hw:chtrt5645: sink). I: [pulseaudio] alsa-sink.c: Successfully enabled mmap() mode. I: [pulseaudio] alsa-sink.c: Successfully enabled timer-based scheduling mode. I: [pulseaudio] alsa-ucm.c: ALSA device hw:chtrt5645 roles: (null) I: [pulseaudio] module-device-restore.c: Restoring port for sink sink:alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink. W: [pulseaudio] sink.c: Default and alternate sample rates are the same. I: [pulseaudio] sink.c: Created sink 0 "alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink" with sample spec s16le 2ch 48000Hz and channel map front-left,front-right I: [pulseaudio] sink.c: alsa.resolution_bits = "16" I: [pulseaudio] sink.c: device.api = "alsa" I: [pulseaudio] sink.c: device.class = "sound" I: [pulseaudio] sink.c: alsa.class = "generic" I: [pulseaudio] sink.c: alsa.subclass = "generic-mix" I: [pulseaudio] sink.c: alsa.name = "" I: [pulseaudio] sink.c: alsa.id = "1" I: [pulseaudio] sink.c: alsa.subdevice = "0" I: [pulseaudio] sink.c: alsa.subdevice_name = "subdevice #0" I: [pulseaudio] sink.c: alsa.device = "0" I: [pulseaudio] sink.c: alsa.card = "0" I: [pulseaudio] sink.c: alsa.card_name = "chtrt5645" I: [pulseaudio] sink.c: alsa.long_card_name = "chtrt5645" I: [pulseaudio] sink.c: alsa.driver_name = "snd_soc_sst_cht_bsw_rt5645" I: [pulseaudio] sink.c: device.bus_path = "platform-cht-bsw-rt5645" I: [pulseaudio] sink.c: sysfs.path = "/devices/pci0000:00/808622A8:00/cht-bsw-rt5645/sound/card0" I: [pulseaudio] sink.c: device.string = "hw:chtrt5645" I: [pulseaudio] sink.c: device.buffering.buffer_size = "384000" I: [pulseaudio] sink.c: device.buffering.fragment_size = "192000" I: [pulseaudio] sink.c: device.access_mode = "mmap+timer" I: [pulseaudio] sink.c: device.profile.name = "HiFi: hw:chtrt5645: sink" I: [pulseaudio] sink.c: device.profile.description = "Headphones + Speaker" I: [pulseaudio] sink.c: device.description = "chtrt5645 Headphones + Speaker" I: [pulseaudio] sink.c: module-udev-detect.discovered = "1" I: [pulseaudio] sink.c: device.icon_name = "audio-card" I: [pulseaudio] source.c: Created source 0 "alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink.monitor" with sample spec s16le 2ch 48000Hz and channel map front-left,front-right I: [pulseaudio] source.c: device.description = "Monitor of chtrt5645 Headphones + Speaker" I: [pulseaudio] source.c: device.class = "monitor" I: [pulseaudio] source.c: alsa.card = "0" I: [pulseaudio] source.c: alsa.card_name = "chtrt5645" I: [pulseaudio] source.c: alsa.long_card_name = "chtrt5645" I: [pulseaudio] source.c: alsa.driver_name = "snd_soc_sst_cht_bsw_rt5645" I: [pulseaudio] source.c: device.bus_path = "platform-cht-bsw-rt5645" I: [pulseaudio] source.c: sysfs.path = "/devices/pci0000:00/808622A8:00/cht-bsw-rt5645/sound/card0" I: [pulseaudio] source.c: device.string = "0" I: [pulseaudio] source.c: module-udev-detect.discovered = "1" I: [pulseaudio] source.c: device.icon_name = "audio-card" I: [pulseaudio] alsa-sink.c: Using 2.0 fragments of size 192000 bytes (1000.00ms), buffer size is 384000 bytes (2000.00ms) I: [pulseaudio] alsa-sink.c: Time scheduling watermark is 18.38ms I: [alsa-sink-1] core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5. I: [alsa-sink-1] alsa-sink.c: Starting playback. I: [pulseaudio] alsa-util.c: Cannot disable ALSA period wakeups I: [pulseaudio] alsa-util.c: Device hw:chtrt5645 doesn't support 44100 Hz, changed to 48000 Hz. I: [pulseaudio] alsa-util.c: ALSA period wakeups were not disabled I: [pulseaudio] alsa-source.c: Successfully opened device hw:chtrt5645. I: [pulseaudio] alsa-source.c: Selected mapping 'Headset Microphone + Internal Digital Microphones + Internal Analog Microphones' (HiFi: hw:chtrt5645: source). I: [pulseaudio] alsa-source.c: Successfully enabled mmap() mode. I: [pulseaudio] alsa-source.c: Successfully enabled timer-based scheduling mode. I: [pulseaudio] alsa-ucm.c: ALSA device hw:chtrt5645 roles: (null) W: [pulseaudio] source.c: Default and alternate sample rates are the same. I: [pulseaudio] source.c: Created source 1 "alsa_input.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__source" with sample spec s16le 2ch 48000Hz and channel map front-left,front-right I: [pulseaudio] source.c: alsa.resolution_bits = "16" I: [pulseaudio] source.c: device.api = "alsa" I: [pulseaudio] source.c: device.class = "sound" I: [pulseaudio] source.c: alsa.class = "generic" I: [pulseaudio] source.c: alsa.subclass = "generic-mix" I: [pulseaudio] source.c: alsa.name = "" I: [pulseaudio] source.c: alsa.id = "3" I: [pulseaudio] source.c: alsa.subdevice = "0" I: [pulseaudio] source.c: alsa.subdevice_name = "subdevice #0" I: [pulseaudio] source.c: alsa.device = "0" I: [pulseaudio] source.c: alsa.card = "0" I: [pulseaudio] source.c: alsa.card_name = "chtrt5645" I: [pulseaudio] source.c: alsa.long_card_name = "chtrt5645" I: [pulseaudio] source.c: alsa.driver_name = "snd_soc_sst_cht_bsw_rt5645" I: [pulseaudio] source.c: device.bus_path = "platform-cht-bsw-rt5645" I: [pulseaudio] source.c: sysfs.path = "/devices/pci0000:00/808622A8:00/cht-bsw-rt5645/sound/card0" I: [pulseaudio] source.c: device.string = "hw:chtrt5645" I: [pulseaudio] source.c: device.buffering.buffer_size = "384000" I: [pulseaudio] source.c: device.buffering.fragment_size = "192000" I: [pulseaudio] source.c: device.access_mode = "mmap+timer" I: [pulseaudio] source.c: device.profile.name = "HiFi: hw:chtrt5645: source" I: [pulseaudio] source.c: device.profile.description = "Headset Microphone + Internal Digital Microphones + Internal Analog Microphones" I: [pulseaudio] source.c: device.description = "chtrt5645 Headset Microphone + Internal Digital Microphones + Internal Analog Microphones" I: [pulseaudio] source.c: module-udev-detect.discovered = "1" I: [pulseaudio] source.c: device.icon_name = "audio-card" I: [pulseaudio] alsa-source.c: Using 2.0 fragments of size 192000 bytes (1000.00ms), buffer size is 384000 bytes (2000.00ms) I: [pulseaudio] alsa-source.c: Time scheduling watermark is 18.38ms I: [alsa-source-3] core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5. I: [alsa-source-3] alsa-source.c: Starting capture. I: [pulseaudio] module.c: Loaded "module-alsa-card" (index: #6; argument: "device_id="0" name="platform-cht-bsw-rt5645" card_name="alsa_card.platform-cht-bsw-rt5645" 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/pci0000:00/808622A8:00/cht-bsw-rt5645/sound/card0 (alsa_card.platform-cht-bsw-rt5645) module loaded. I: [pulseaudio] module-udev-detect.c: Found 1 cards. I: [pulseaudio] module.c: Loaded "module-udev-detect" (index: #5; argument: ""). I: [pulseaudio] module.c: Loaded "module-bluetooth-policy" (index: #7; argument: ""). I: [pulseaudio] module.c: Loaded "module-bluez5-discover" (index: #9; argument: ""). I: [pulseaudio] module.c: Loaded "module-bluetooth-discover" (index: #8; argument: ""). I: [pulseaudio] module.c: Loaded "module-esound-protocol-unix" (index: #10; argument: ""). I: [pulseaudio] module.c: Loaded "module-native-protocol-unix" (index: #11; argument: ""). I: [pulseaudio] module-default-device-restore.c: Restored default sink 'alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink'. I: [pulseaudio] module-default-device-restore.c: Restored default source 'alsa_input.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__source'. I: [pulseaudio] module.c: Loaded "module-default-device-restore" (index: #12; argument: ""). I: [pulseaudio] module.c: Loaded "module-rescue-streams" (index: #13; argument: ""). I: [pulseaudio] module.c: Loaded "module-always-sink" (index: #14; argument: ""). I: [pulseaudio] module.c: Loaded "module-intended-roles" (index: #15; argument: ""). I: [pulseaudio] module.c: Loaded "module-suspend-on-idle" (index: #16; argument: ""). I: [pulseaudio] client.c: Created 0 "Login Session 2" I: [pulseaudio] module.c: Loaded "module-systemd-login" (index: #17; argument: ""). I: [pulseaudio] module.c: Loaded "module-position-event-sounds" (index: #18; argument: ""). I: [pulseaudio] module.c: Loaded "module-role-cork" (index: #19; argument: ""). I: [pulseaudio] module.c: Loaded "module-filter-heuristics" (index: #20; argument: ""). I: [pulseaudio] module.c: Loaded "module-filter-apply" (index: #21; argument: ""). I: [pulseaudio] main.c: Daemon startup complete. I: [pulseaudio] module-suspend-on-idle.c: Source alsa_input.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__source idle for too long, suspending ... I: [alsa-source-3] alsa-source.c: Device suspended... I: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink idle for too long, suspending ... I: [alsa-sink-1] alsa-sink.c: Device suspended... I: [pulseaudio] (alsa-lib)utils.c: could not open configuration file /usr/share/alsa/ucm/Intel HDMI/DP LPE Audio/Intel HDMI/DP LPE Audio.conf I: [pulseaudio] (alsa-lib)parser.c: error: could not parse configuration for card Intel HDMI/DP LPE Audio I: [pulseaudio] (alsa-lib)main.c: error: failed to import Intel HDMI/DP LPE Audio use case configuration -2 I: [pulseaudio] alsa-ucm.c: UCM not available for card Intel HDMI/DP LPE Audio I: [pulseaudio] (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: [pulseaudio] alsa-util.c: Error opening PCM device hw:1: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM front:1 I: [pulseaudio] alsa-util.c: Error opening PCM device front:1: Invalid argument I: [pulseaudio] (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: [pulseaudio] alsa-util.c: Error opening PCM device hw:1: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM iec958:1 I: [pulseaudio] alsa-util.c: Error opening PCM device iec958:1: Invalid argument I: [pulseaudio] alsa-util.c: Failed to set hardware parameters on plug:hw:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM front:1 I: [pulseaudio] alsa-util.c: Error opening PCM device front:1: Invalid argument I: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_buffer_size_near() failed: Invalid argument I: [pulseaudio] alsa-util.c: Successfully attached to mixer 'hw:1' I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM surround21:1 I: [pulseaudio] alsa-util.c: Error opening PCM device surround21:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM surround40:1 I: [pulseaudio] alsa-util.c: Error opening PCM device surround40:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM surround41:1 I: [pulseaudio] alsa-util.c: Error opening PCM device surround41:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM surround50:1 I: [pulseaudio] alsa-util.c: Error opening PCM device surround50:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM surround51:1 I: [pulseaudio] alsa-util.c: Error opening PCM device surround51:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM surround71:1 I: [pulseaudio] alsa-util.c: Error opening PCM device surround71:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM iec958:1 I: [pulseaudio] alsa-util.c: Error opening PCM device iec958:1: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM a52:1 I: [pulseaudio] alsa-util.c: Error opening PCM device a52:1: No such file or directory I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM a52:1 I: [pulseaudio] alsa-util.c: Error opening PCM device a52:1: No such file or directory I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dca:1 I: [pulseaudio] alsa-util.c: Error opening PCM device dca:1: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dcahdmi:1 I: [pulseaudio] alsa-util.c: Error opening PCM device dcahdmi:1: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,1 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,1 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,1: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,1 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,1: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dcahdmi:1,1 I: [pulseaudio] alsa-util.c: Error opening PCM device dcahdmi:1,1: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,2 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,2 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,2: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,2 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,2 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,2: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,2 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,2 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,2: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dcahdmi:1,2 I: [pulseaudio] alsa-util.c: Error opening PCM device dcahdmi:1,2: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,3 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,3 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,3: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,3 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,3 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,3: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,3 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,3 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,3: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dcahdmi:1,3 I: [pulseaudio] alsa-util.c: Error opening PCM device dcahdmi:1,3: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,4 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,4 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,4: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,4 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,4 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,4: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,4 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,4 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,4: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dcahdmi:1,4 I: [pulseaudio] alsa-util.c: Error opening PCM device dcahdmi:1,4: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,5 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,5 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,5: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,5 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,5 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,5: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,5 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,5 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,5: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dcahdmi:1,5 I: [pulseaudio] alsa-util.c: Error opening PCM device dcahdmi:1,5: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,6 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,6 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,6: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,6 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,6 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,6: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,6 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,6 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,6: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dcahdmi:1,6 I: [pulseaudio] alsa-util.c: Error opening PCM device dcahdmi:1,6: No such file or directory I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,7 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,7 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,7: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,7 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,7 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,7: Invalid argument I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1,7 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM hdmi:1,7 I: [pulseaudio] alsa-util.c: Error opening PCM device hdmi:1,7: Invalid argument I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM dcahdmi:1,7 I: [pulseaudio] alsa-util.c: Error opening PCM device dcahdmi:1,7: No such file or directory I: [pulseaudio] (alsa-lib)pcm_hw.c: open '/dev/snd/pcmC1D0c' failed (-2) I: [pulseaudio] alsa-util.c: Error opening PCM device hw:1: No such file or directory I: [pulseaudio] module-card-restore.c: Restoring port latency offsets for card alsa_card.pci-0000_00_02.0-platform-hdmi-lpe-audio. I: [pulseaudio] card.c: Created 1 "alsa_card.pci-0000_00_02.0-platform-hdmi-lpe-audio" I: [pulseaudio] (alsa-lib)conf.c: Unknown parameters 1 I: [pulseaudio] (alsa-lib)pcm.c: Unknown PCM front:1 I: [pulseaudio] alsa-util.c: Error opening PCM device front:1: Invalid argument I: [pulseaudio] alsa-util.c: Trying to disable ALSA period wakeups, using timers only I: [pulseaudio] alsa-util.c: snd_pcm_hw_params_set_buffer_size_near() failed: Invalid argument I: [pulseaudio] alsa-util.c: ALSA period wakeups disabled I: [pulseaudio] alsa-sink.c: Successfully opened device hw:1. I: [pulseaudio] alsa-sink.c: Selected mapping 'Analog Stereo' (analog-stereo). I: [pulseaudio] alsa-sink.c: Successfully enabled mmap() mode. I: [pulseaudio] alsa-sink.c: Successfully enabled timer-based scheduling mode. I: [pulseaudio] alsa-util.c: Successfully attached to mixer 'hw:1' I: [pulseaudio] sink.c: Created sink 1 "alsa_output.pci-0000_00_02.0-platform-hdmi-lpe-audio.analog-stereo" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right I: [pulseaudio] sink.c: alsa.resolution_bits = "16" I: [pulseaudio] sink.c: device.api = "alsa" I: [pulseaudio] sink.c: device.class = "sound" I: [pulseaudio] sink.c: alsa.class = "generic" I: [pulseaudio] sink.c: alsa.subclass = "generic-mix" I: [pulseaudio] sink.c: alsa.name = "Intel HDMI/DP LPE Audio" I: [pulseaudio] sink.c: alsa.id = "HdmiLpeAudio" I: [pulseaudio] sink.c: alsa.subdevice = "0" I: [pulseaudio] sink.c: alsa.subdevice_name = "subdevice #0" I: [pulseaudio] sink.c: alsa.device = "0" I: [pulseaudio] sink.c: alsa.card = "1" I: [pulseaudio] sink.c: alsa.card_name = "Intel HDMI/DP LPE Audio" I: [pulseaudio] sink.c: alsa.long_card_name = "Intel HDMI/DP LPE Audio" I: [pulseaudio] sink.c: alsa.driver_name = "snd_hdmi_lpe_audio" I: [pulseaudio] sink.c: device.bus_path = "pci-0000:00:02.0-platform-hdmi-lpe-audio" I: [pulseaudio] sink.c: sysfs.path = "/devices/pci0000:00/0000:00:02.0/hdmi-lpe-audio/sound/card1" I: [pulseaudio] sink.c: device.bus = "pci" I: [pulseaudio] sink.c: device.vendor.id = "8086" I: [pulseaudio] sink.c: device.vendor.name = "Intel Corporation" I: [pulseaudio] sink.c: device.product.id = "22b0" I: [pulseaudio] sink.c: device.product.name = "Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers" I: [pulseaudio] sink.c: device.string = "hw:1" I: [pulseaudio] sink.c: device.buffering.buffer_size = "352832" I: [pulseaudio] sink.c: device.buffering.fragment_size = "352832" I: [pulseaudio] sink.c: device.access_mode = "mmap+timer" I: [pulseaudio] sink.c: device.profile.name = "analog-stereo" I: [pulseaudio] sink.c: device.profile.description = "Analog Stereo" I: [pulseaudio] sink.c: device.description = "Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers Analog Stereo" I: [pulseaudio] sink.c: module-udev-detect.discovered = "1" I: [pulseaudio] sink.c: device.icon_name = "audio-card-pci" I: [pulseaudio] source.c: Created source 2 "alsa_output.pci-0000_00_02.0-platform-hdmi-lpe-audio.analog-stereo.monitor" with sample spec s16le 2ch 44100Hz and channel map front-left,front-right I: [pulseaudio] source.c: device.description = "Monitor of Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers Analog Stereo" I: [pulseaudio] source.c: device.class = "monitor" I: [pulseaudio] source.c: alsa.card = "1" I: [pulseaudio] source.c: alsa.card_name = "Intel HDMI/DP LPE Audio" I: [pulseaudio] source.c: alsa.long_card_name = "Intel HDMI/DP LPE Audio" I: [pulseaudio] source.c: alsa.driver_name = "snd_hdmi_lpe_audio" I: [pulseaudio] source.c: device.bus_path = "pci-0000:00:02.0-platform-hdmi-lpe-audio" I: [pulseaudio] source.c: sysfs.path = "/devices/pci0000:00/0000:00:02.0/hdmi-lpe-audio/sound/card1" I: [pulseaudio] source.c: device.bus = "pci" I: [pulseaudio] source.c: device.vendor.id = "8086" I: [pulseaudio] source.c: device.vendor.name = "Intel Corporation" I: [pulseaudio] source.c: device.product.id = "22b0" I: [pulseaudio] source.c: device.product.name = "Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers" I: [pulseaudio] source.c: device.string = "1" I: [pulseaudio] source.c: module-udev-detect.discovered = "1" I: [pulseaudio] source.c: device.icon_name = "audio-card-pci" I: [pulseaudio] alsa-sink.c: Using 1.0 fragments of size 352832 bytes (2000.18ms), buffer size is 352832 bytes (2000.18ms) I: [pulseaudio] alsa-sink.c: Time scheduling watermark is 20.00ms I: [pulseaudio] alsa-sink.c: Driver does not support hardware volume control, falling back to software volume control. I: [pulseaudio] alsa-sink.c: Driver does not support hardware mute control, falling back to software mute control. I: [alsa-sink-HdmiLpeAudio] core-util.c: Successfully enabled SCHED_RR scheduling for thread, with priority 5. I: [alsa-sink-HdmiLpeAudio] alsa-sink.c: Starting playback. I: [alsa-sink-HdmiLpeAudio] (alsa-lib)pcm_hw.c: SNDRV_PCM_IOCTL_HWSYNC failed (-32) I: [pulseaudio] module.c: Loaded "module-alsa-card" (index: #22; argument: "device_id="1" name="pci-0000_00_02.0-platform-hdmi-lpe-audio" card_name="alsa_card.pci-0000_00_02.0-platform-hdmi-lpe-audio" 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/pci0000:00/0000:00:02.0/hdmi-lpe-audio/sound/card1 (alsa_card.pci-0000_00_02.0-platform-hdmi-lpe-audio) module loaded. I: [alsa-sink-HdmiLpeAudio] alsa-sink.c: Starting playback. I: [alsa-sink-HdmiLpeAudio] alsa-sink.c: Starting playback. I: [alsa-sink-HdmiLpeAudio] alsa-sink.c: Starting playback. I: [alsa-sink-HdmiLpeAudio] alsa-sink.c: Starting playback. I: [alsa-sink-HdmiLpeAudio] alsa-sink.c: Starting playback. I: [alsa-sink-HdmiLpeAudio] alsa-sink.c: Starting playback. Note I'm seeing this on multiple Cherry Trail devices as well as on a Bay Trail Asus T100TA (if I remember correctly, not sure about that last one). Regards, Hans