On Tue, 2020-08-04 at 11:56 +0200, Bastien Nocera wrote:
Hey,
The front audio jack on my newly purchased (but not new) Lenovo m720s doesn't make a microphone output appear in PulseAudio when a headset is plugged in. The headphone part works correctly though. The "sof-hda- dsp Front Headphone" evdev device will switch the state of SW_HEADPHONE_INSERT as expected.
Does anyone know whether the headphones/headset switching is supposed to be automatic, or would that trigger a "what did you plug in" dialogue as on some Dell machines I've worked with?
I couldn't find any quirks in sound/pci/hda that would be directly related to this problem (eg. Lenovo, ALC233 and mic presence), so I'm a bit stumped.
I've attached the pinout information from alsa-info.
I should note that I'm using BIOS version M1UKT21A, and that the latest is 25 releases newer, so that it's very possible that a newer BIOS would fix this. I'll have to try that first.
Removed David from the CC:, as I don't have a current address for him.