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IIO accelerometer sensor to input device proxy
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HP Envy x360 - no iio sensors detected #275

Closed constantbeginner closed 4 years ago

constantbeginner commented 5 years ago

Hello there,

on my HP Envy x360 with Ubuntu 19.04 the command udevadm info --export-db does not detect any iio device.

lsmod | grep acc though finds this:

hp_accel               28672  0
lis3lv02d              24576  1 hp_accel

I have tried using sudo systemctl start iio-sensor-proxy which executes without giving any output whatsoever, so does iio-sensor-proxy

gdbus introspect --system --dest net.hadess.SensorProxy --object-path /net/hadess/SensorProxyproduces the following error message:

Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name net.hadess.SensorProxy was not provided by any .service files

launching monitor-sensor only produces Waiting for iio-sensor-proxy to appear, which is plausible, since no sensor is detected.

What am I missing?

linusw commented 5 years ago

This seems to be using the old lis3lv02d sensor driver from drivers/misc/lis3lv02d/

I don't think that is a good idea. It uses a custom chardev and not the IIO subsystem, is not very well maintained and there is a modern driver for it. In my opinon the kernel need to be reconfigured not to build this module and use drivers/iio/accel/st_accel_i2c.c instead.

Possibly the IIO driver needs to be patched to properly detect the lis3lv02d on x86/ACPI as well.

constantbeginner commented 5 years ago

Unfortunately this is all way above my skill level. If there is anything I could do to help, I would be happy to try. Would that be useful if I try to reconfigure the kernel (never done it before) and let you know the outcome?

hadess commented 5 years ago

I don't think that is a good idea. It uses a custom chardev and not the IIO subsystem, is not very well maintained and there is a modern driver for it. In my opinon the kernel need to be reconfigured not to build this module and use drivers/iio/accel/st_accel_i2c.c instead.

Possibly the IIO driver needs to be patched to properly detect the lis3lv02d on x86/ACPI as well.

lis3lv02d_joystick_enable() in drivers/misc/lis3lv02d/lis3lv02d.c will export the accelerometer data through an input device, which iio-sensor-proxy supports (src/drv-input-accel.c).

You'll want to check whether the kernel is correctly configured to export that input device, and whether you have a recent version of iio-sensor-proxy.

See also #173.

wismill commented 5 years ago

@constantbeginner There seem to be a fix in preparation.

constantbeginner commented 5 years ago

@wismill That's great news, I'll sit tight and wait for it to be released, then I'll be happy to beta test it and let you know

wismill commented 4 years ago

Fix is still in preparation.

constantbeginner commented 4 years ago

I'm still available to test it once it's out

hadess commented 4 years ago

I'll close this seeing as the reason why there's no accelerometer is because none are accessible by the kernel. Please file a new bug once the driver's landed and if there's problems.

wismill commented 4 years ago

https://lwn.net/Articles/809084/

Edit: Please don't post links to this website, thanks.