iio-sensor-proxy doesn't start with systemd (OP6)

In the systemd build of pmOS on the oneplus6, iio-sensor-proxy doesn't start.

This is because 1) hexagonrpcd-sdsp isn't working, it needs the calibration/firmware directory to be passed while starting

ExecStart=/usr/bin/hexagonrpcd -f /dev/fastrpc-sdsp -d sdsp -s -R /usr/share/qcom/sdm845/OnePlus/oneplus6

and 2) because iio-sensor-proxy service fails to wait for hexagonrpcd.

Systemd seems to do its job with dbus activation and tries to start iio-sensor-proxy quite early, but hexagonrpcd is still starting (journal shows hexagonrpcd reading various for as long as 10 seconds). Likely the issue is that hexagonrpcd is notifying startup to systemd too early.

changed the description

By verdre on 2024-07-11T19:13:02

changed milestone to %initial systemd support

added category::device systemd labels

possibly this could solve the issue for hexagonrpcd-*.service https://gitlab.com/raihan2000/pkgbuilds/-/blob/sensor-support/device/hexagonrpcd/hexagonrpcd-sdsp.service#L3

for iio-sensor-proxy we will use https://gitlab.com/raihan2000/pkgbuilds/-/blob/sensor-support/device/iio-sensor-proxy/iio-sensor-proxy.service.delay

which is tested by me on OP6T with ALARM on it

By Raihan Ahamed on 2024-07-17T13:11:49

for iio-sensor-proxy we will use https://gitlab.com/raihan2000/pkgbuilds/-/blob/sensor-support/device/iio-sensor-proxy/iio-sensor-proxy.service.delay

That sounds like a hack that could work for now, but a proper solution would be to use systemd-notify in hexagonrpcd to notify to systemd that startup has finished.

By verdre on 2024-07-17T13:11:49

Yes it is temporary solution. Nice to know this. Then no need to provide extra hacks, waiting for next hexagonrpcd release

By Raihan Ahamed on 2024-07-17T14:04:16

I tried to report this upstream: https://gitlab.com/sdm670-mainline/hexagonrpc/-/issues/3

By clayton craft on 2024-09-13T07:31:13

This is now working, but there's a new issue with iio-sensor-proxy, will open a new issue.

systemctl status hexagonrpcd-sdsp.service
● hexagonrpcd-sdsp.service - Qualcomm Sensor DSP FastRPC filesystem proxy
     Loaded: loaded (/usr/lib/systemd/system/hexagonrpcd-sdsp.service; enabled; preset: enabled)
     Active: active (running) since Thu 2025-01-09 18:24:00 ACDT; 17min ago
 Invocation: f92fd08c13144e9d885aa8c4fb275421
   Main PID: 811 (hexagonrpcd)
      Tasks: 1 (limit: 9098)
     Memory: 104K (peak: 288K)
        CPU: 1ms
     CGroup: /system.slice/hexagonrpcd-sdsp.service
             └─811 /usr/bin/hexagonrpcd -f /dev/fastrpc-sdsp -s

Jan 09 18:24:00 oneplus-enchilada systemd[1]: hexagonrpcd-sdsp.service: Scheduled restart job, restart counter is at 1.
Jan 09 18:24:00 oneplus-enchilada systemd[1]: Started Qualcomm Sensor DSP FastRPC filesystem proxy.
Jan 09 18:24:00 oneplus-enchilada hexagonrpcd[811]: Starting /usr/bin/hexagonrpcd (INIT_ATTACH_SNS) on /dev/fastrpc-sdsp

closed