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On Monday, 30 August 2021 11:30:38 BST Alexander Puchmayr wrote: |
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> Hi there, |
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> |
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> I have a weird problem on my Lenovo P14s laptop. Before I applied a world |
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> upgrade (based on August 22 state portage), the internal speaker of the |
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> laptop worked fine, but now its all silent, although all mixer levels are |
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> 100% and no channel is muted. |
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There was a recent move to pipewire which could have jumbled audio devices |
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around for you - but I am not familiar with how pipewire works, or why it |
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would have caused this problem. |
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https://wiki.gentoo.org/wiki/PipeWire |
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In my use case the capture device (on board mic) is now always enabled upon a |
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reboot and I have to manually disable it each time, because my selection is |
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not being stored. |
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NOTE: I don't use pulseaudio on this system, just alsa and now it is alsa plus |
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pipewire. I haven't yet looked how to configure it. |
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|
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$ ps axf | grep pipe |
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19015 pts/5 S+ 0:00 \_ /bin/grep -E --colour=auto --color=auto |
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pipe |
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4334 ? Sl 0:05 /usr/bin/pipewire |
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4349 ? Sl 0:00 \_ /usr/bin/pipewire-media-session |
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4350 ? Sl 0:00 \_ /usr/bin/pipewire -c pipewire-pulse.conf |
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> Observed facts: |
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> * Connecting a HDMI tv-set produces sound over the tv-set properly |
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> * Booting Win10: Internal speakers working fine --> no hw issue |
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> * Connecting headphone via audio jack under linux - no sound. |
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> * Reverting to backup makes sound work again --> config/sw problem |
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> introduced by update |
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> * In plasma's system settings/audio tray, the Speaker output device is not |
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> shown -- only 3xHDMI (The analog speaker seems to have gone) |
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> |
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> The kernel is exactly the same as before the upgrade, didn't recompile it |
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> (sys-kernel/gentoo-sources-5.12.0) --> no kernel issue |
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From the above observations it seems your default audio card has been swapped |
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from analogue to HDMI. This seems to be the default for many laptops. |
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[snip...] |
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> Any further ideas? |
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> |
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> Thanks, Alex |
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You can try swapping them around by adding in /etc/asound.conf appropriate |
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entries; e.g. this is what I have in mine: |
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defaults.pcm.card 1 |
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defaults.pcm.device 0 |
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defaults.ctl.card 1 |
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Where in my case card 1, device 0, is the analogue audio device "HDA-Intel - |
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HD-Audio Generic": |
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$ aplay -l |
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**** List of PLAYBACK Hardware Devices **** |
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card 0: HDMI [HDA ATI HDMI], device 3: Generic Digital [Generic Digital] |
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Subdevices: 1/1 |
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Subdevice #0: subdevice #0 |
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card 1: Generic [HD-Audio Generic], device 0: CX20757 Analog [CX20757 Analog] |
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Subdevices: 1/1 |
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Subdevice #0: subdevice #0 |
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Alternatively, take a look at this method of controlling the order in which |
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audio modules are loaded: |
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https://wiki.gentoo.org/wiki/ALSA#Laptops_with_HDMI_audio_output |
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