Bug 218104

Created attachment 305368 [details]
sensors missing from udevadm info --export-db after b300667b33b2b5a2c8e5f8f22826befb3d7f4f2b

+++ This bug was initially created as a clone of Bug #212615 +++

I have a HP ProBook x360 435 G7 (Ryzen 4700U). On GNOME Wayland with
the Screen Autorotate extension
(https://extensions.gnome.org/extension/4191/screen-autorotate/), I
confirmed by bisection that b300667b33b2b5a2c8e5f8f22826befb3d7f4f2b
caused autorotation to stop working.

More specifically, before this commit (on aa0b724a2bf041036e56cbb3b4b3afde7c5e7c9e):

* `sudo iio-sensor-proxy -v -r` stays running (doesn't exit immediately) and prints nothing
* `monitor-sensor` starts up by saying "=== Has accelerometer (orientation: normal)" and prints "    Accelerometer orientation changed: bottom-up" when I physically rotate the screen.
* `udevadm info --export-db` contains the accelerometer/gyroscope sensor info I've pasted in the attachment.

After b300667b33b2b5a2c8e5f8f22826befb3d7f4f2b:

* `sudo iio-sensor-proxy -v -r` exits immediately.
* `monitor-sensor` prints "    Waiting for iio-sensor-proxy to appear" on startup and does nothing when I rotate the screen.
* The sensors in the attachment are no longer listed in `udevadm info --export-db`.
* The `hid_sensor_gyro_3d` and `hid_sensor_accel_3d` kernel modules are no longer loaded automatically, and loading them does nothing.

Reverting b300667b33b2b5a2c8e5f8f22826befb3d7f4f2b on top of 6.6 also makes screen autorotation work again. Whenever screen autorotation works, `iio_generic_buffer --device-num 2 -A -c 100` reports good accelerometer values.

(The following is essentially the contents of bug #212625 comment #46)

> If you revert that commit on top of 6.6 does it start working?  Also; can
> you still get into the deepest s2idle sleep state in 6.6 with it reverted? 
> You can check with /sys/power/suspend_stats/last_hw_sleep.

I don't have a /sys/power/suspend_stats/last_hw_sleep file (tested on stock 6.6, as well as on 6.6 + revert of b300667b33b2b5a2c8e5f8f22826befb3d7f4f2b), but if I leave my computer idle for a while it enters standby and I see

Nov 03 08:47:29 hp kernel: PM: suspend entry (deep)

in journalctl, and the computer enters deep sleep (need to press power button to wake it up). Also, the content of /sys/power/mem_sleep is "s2idle [deep]". In bug ug #212615 I also attached the report produced by amd_s2idle.py run on stock 6.6 in case it is relevant (I can also attach it for 6.6 + revert if desired).