Proximity sensor doesn't work

[b100dian]

One way to do it:
mi_ultrasound_extn: us_manual_cal_load: Cannot open calibration file: /mnt/vendor/persist/audio/us_manual_cal

Another way: find out what MI fw does different than lineage (service/executable?)

There were two bugs here: one was that the kernel as built for lineage missed the ultrasound driver, see link to commit below.
The other one is that for it to work, it needs adioservice and audio-hal-2.0..

[b100dian]

Fixed with b100dian/Xiaomi_Kernel_OpenSource@4465895

[b100dian]

Actually, there is something that prevents microphone sound during calls when enabling those services.
It used to work with the 2020 gst-droid and the DIGI SIM card, but on 4.1.0 I upgraded to 2021 gst-droid (and then it used to work with mapplauncherd-booster-silica-qt5-media disabled) but with the Vodafone SIM the latter workaround did not work anymore.
The good news is that, while on a call, the power button can be used to close the screen and open it back...
See sailfishos-on-tucana/droid-config-tucana@6f8d75c

The correct solution is probably around pulseaudio droid enabling these 'soundcards'

[b100dian]

Really hoping this was fixed with sailfishos-on-tucana/droid-config-tucana@6c1e933
I made 8 successful sound boots on 4.1, one unsuccesfull after upgrading to 4.2 and 9 successful after the upgrade.
The race is definitely lesser..

If you encounter a situation where no sound is in a call, systemctl-user restart pulseaudio fixes it (but it doesn't make the proximity sensor work). You can issue that from gui if you register it with qCommand.

[b100dian]

Very much buggy and racy since 4.3, reopening

[b100dian]

Just a thought, the 4.3 changelog references

Boosting of the camera (startup) added back (earlier removed by sandboxing)

https://forum.sailfishos.org/t/release-notes-suomenlinna-4-3-0/8495#camera-13