This is actually a kernel bug, in Linux. The issue is the absence of platform data for this particular board in the snd_soc_rt5645 module.
The issue can be worked around by creating /etc/modprobe.d/hacksound.conf with the following contents: # Invert jack detection (1) and use detection mode 2 (2). options snd_soc_rt5645 quirk=0x21 This takes advantage of the "quirk" option for the module, added in https://github.com/torvalds/linux/commit/4999b0214b05a08b42bbafcb29a0b9c413002d3f, which allows overriding the platform data it usually just has built into it about how audio jacks are hooked up on particular systems. It looks like this board needs special system info added to sound/soc/codecs/rt5645.c, keyed on DMI data. The platform data would look something like: static const struct rt5645_platform_data lattepanda_platform_data = { .jd_mode = 2, .inv_jd1_1 = true }; Here's the DMI data for the motherboard; it's a bit generic. I can provide other DMI data to match on if needed. Base Board Information Manufacturer: AMI Corporation Product Name: Cherry Trail CR Version: Default string Serial Number: Default string Asset Tag: Default string Features: Board is a hosting board Board is replaceable Location In Chassis: Default string Chassis Handle: 0x0003 Type: Motherboard Contained Object Handles: 0 ** Package changed: alsa-lib (Ubuntu) => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to alsa-lib in Ubuntu. https://bugs.launchpad.net/bugs/1824259 Title: Headphone jack switch sense is inverted: plugging in headphones disables headphone output Status in linux package in Ubuntu: Incomplete Bug description: My machine is a LattePanda board, which uses a "chtrt5645" device as a sound card. It has a single headphone output jack, which I think is a TRRS jack, with a mic input, such as is normally used on phones. When I don't have headphones plugged in, the system thinks headphones *are* plugged in. Gnome Control Center shows my audio device as being headphones. If I insert a headphone connector partway into the jack, I can even get sound in the headphones. But if I plug the headphones all the way in, the system decided that I have *un*plugged the headphones, and switches output over to "Speaker". The system doesn't actually have a speaker, only a headphone jack. And when the system switches over to "Speaker", I get no sound out of the headphones, even if I open "pavucontrol" and swap over to "Headphones (unplugged)" on the "Output Devices" tab. This is what "pacmd"'s "list-cards" command says with my headphones *unplugged*: 2 card(s) available. index: 0 name: <alsa_card.pci-0000_00_02.0-platform-hdmi-lpe-audio> driver: <module-alsa-card.c> owner module: 7 properties: alsa.card = "1" alsa.card_name = "Intel HDMI/DP LPE Audio" alsa.long_card_name = "Intel HDMI/DP LPE Audio" alsa.driver_name = "snd_hdmi_lpe_audio" device.bus_path = "pci-0000:00:02.0-platform-hdmi-lpe-audio" sysfs.path = "/devices/pci0000:00/0000:00:02.0/hdmi-lpe-audio/sound/card1" device.bus = "pci" device.vendor.id = "8086" device.vendor.name = "Intel Corporation" device.product.id = "22b0" device.product.name = "Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers" device.string = "1" device.description = "Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Series PCI Configuration Registers" module-udev-detect.discovered = "1" device.icon_name = "audio-card-pci" profiles: output:hdmi-stereo: Digital Stereo (HDMI) Output (priority 5900, available: no) output:hdmi-surround: Digital Surround 5.1 (HDMI) Output (priority 800, available: no) output:hdmi-surround71: Digital Surround 7.1 (HDMI) Output (priority 800, available: no) output:hdmi-stereo-extra1: Digital Stereo (HDMI 2) Output (priority 5700, available: no) output:hdmi-surround-extra1: Digital Surround 5.1 (HDMI 2) Output (priority 600, available: no) output:hdmi-surround71-extra1: Digital Surround 7.1 (HDMI 2) Output (priority 600, available: no) output:hdmi-stereo-extra2: Digital Stereo (HDMI 3) Output (priority 5700, available: no) output:hdmi-surround-extra2: Digital Surround 5.1 (HDMI 3) Output (priority 600, available: no) output:hdmi-surround71-extra2: Digital Surround 7.1 (HDMI 3) Output (priority 600, available: no) off: Off (priority 0, available: unknown) active profile: <off> ports: hdmi-output-0: HDMI / DisplayPort (priority 5900, latency offset 0 usec, available: no) properties: device.icon_name = "video-display" hdmi-output-1: HDMI / DisplayPort 2 (priority 5800, latency offset 0 usec, available: no) properties: device.icon_name = "video-display" hdmi-output-2: HDMI / DisplayPort 3 (priority 5700, latency offset 0 usec, available: no) properties: device.icon_name = "video-display" index: 1 name: <alsa_card.platform-cht-bsw-rt5645> driver: <module-alsa-card.c> owner module: 8 properties: alsa.card = "0" alsa.card_name = "chtrt5645" alsa.long_card_name = "AMICorporation-Defaultstring-Defaultstring-CherryTrailCR" alsa.driver_name = "snd_soc_sst_cht_bsw_rt5645" device.bus_path = "platform-cht-bsw-rt5645" sysfs.path = "/devices/pci0000:00/808622A8:00/cht-bsw-rt5645/sound/card0" device.form_factor = "internal" device.string = "0" device.description = "Built-in Audio" module-udev-detect.discovered = "1" device.icon_name = "audio-card" profiles: HiFi: Default (priority 8000, available: unknown) off: Off (priority 0, available: unknown) active profile: <HiFi> sinks: alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink/#0: Built-in Audio Headphones + Speaker sources: alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink.monitor/#0: Monitor of Built-in Audio Headphones + Speaker alsa_input.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__source/#1: Built-in Audio Headset Microphone + Internal Analog Microphone ports: [Out] Headphones: Headphones (priority 100, latency offset 0 usec, available: yes) properties: [Out] Speaker: Speaker (priority 100, latency offset 0 usec, available: no) properties: [In] HSMic: Headset Microphone (priority 100, latency offset 0 usec, available: yes) properties: [In] Mic: Internal Analog Microphone (priority 150, latency offset 0 usec, available: no) properties: When I plug in the headphones, the entry for card 1 changes to: index: 1 name: <alsa_card.platform-cht-bsw-rt5645> driver: <module-alsa-card.c> owner module: 8 properties: alsa.card = "0" alsa.card_name = "chtrt5645" alsa.long_card_name = "AMICorporation-Defaultstring-Defaultstring-CherryTrailCR" alsa.driver_name = "snd_soc_sst_cht_bsw_rt5645" device.bus_path = "platform-cht-bsw-rt5645" sysfs.path = "/devices/pci0000:00/808622A8:00/cht-bsw-rt5645/sound/card0" device.form_factor = "internal" device.string = "0" device.description = "Built-in Audio" module-udev-detect.discovered = "1" device.icon_name = "audio-card" profiles: HiFi: Default (priority 8000, available: unknown) off: Off (priority 0, available: unknown) active profile: <HiFi> sinks: alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink/#0: Built-in Audio Headphones + Speaker sources: alsa_output.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__sink.monitor/#0: Monitor of Built-in Audio Headphones + Speaker alsa_input.platform-cht-bsw-rt5645.HiFi__hw_chtrt5645__source/#1: Built-in Audio Headset Microphone + Internal Analog Microphone ports: [Out] Headphones: Headphones (priority 100, latency offset 0 usec, available: no) properties: [Out] Speaker: Speaker (priority 100, latency offset 0 usec, available: unknown) properties: [In] HSMic: Headset Microphone (priority 100, latency offset 0 usec, available: no) properties: [In] Mic: Internal Analog Microphone (priority 150, latency offset 0 usec, available: unknown) properties: Note that the "Headphones" port is now "available: no". PulseAudio is getting all these ports from Alsa's UCM (Use Case Manager) system, which has a bunch of config files that live in /usr/share/alsa/ucm. I tried editing /usr/share/alsa/ucm/chtrt5645/HiFi.conf to swap the enable and disable procedures for the headphones and the speakers, in hopes of convincing it to route audio out the headphone jack, but that didn't work. This problem has affected me since at least Ubuntu 18.04. I've upgraded through 18.10 and to 19.04 today. All three releases have the same problem. 1. How is the PulseAudio/ALSA system determining whether headphones are plugged in or not? 2. How do I invert the sense of that test? ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: libasound2 1.1.8-1 ProcVersionSignature: Ubuntu 5.0.0-8.9-generic 5.0.1 Uname: Linux 5.0.0-8-generic x86_64 ApportVersion: 2.20.10-0ubuntu26 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Apr 10 19:21:09 2019 InstallationDate: Installed on 2018-12-08 (123 days ago) InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-lib UpgradeStatus: Upgraded to disco on 2019-04-11 (0 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1824259/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
