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hadess / iio-sensor-proxy

IIO accelerometer sensor to input device proxy
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Hard drive accelerator used as input #280

Closed janbrummer closed 5 years ago

janbrummer commented 5 years ago

On a HP EliteBook 850 G3 the hard driver accelerator sensor lis3lv02d is accidently used as an input source for iio-sensor-proxy. This causes lots of problems taking this notebook to a meeting in an active state. Screen orientation changes quickly and it looks akwards in a meeting room rotating the whole system to get back to a correct state. Input device is created by hp_accel module: Glue between LIS3LV02Dx and HP ACPI BIOS and support for disk protection LED.

How can we prevent it from getting used?

The necessary information for the sensor:

P: /devices/platform/lis3lv02d
L: 0
E: DEVPATH=/devices/platform/lis3lv02d
E: SUBSYSTEM=platform
E: MODALIAS=platform:lis3lv02d
E: USEC_INITIALIZED=32677139
E: ID_PATH=platform-lis3lv02d
E: ID_PATH_TAG=platform-lis3lv02d

P: /devices/platform/lis3lv02d/input/input24
L: 0
E: DEVPATH=/devices/platform/lis3lv02d/input/input24
E: SUBSYSTEM=input
E: PRODUCT=19/0/0/0
E: NAME="ST LIS3LV02DL Accelerometer"
E: PHYS="lis3lv02d/input0"
E: PROP=0
E: EV=9
E: ABS=7
E: MODALIAS=input:b0019v0000p0000e0000-e0,3,kra0,1,2,mlsfw
E: USEC_INITIALIZED=33141993
E: ID_INPUT=1
E: ID_INPUT_ACCELEROMETER=1
E: ID_PATH=platform-lis3lv02d
E: ID_PATH_TAG=platform-lis3lv02d
E: ID_FOR_SEAT=input-platform-lis3lv02d
E: IIO_SENSOR_PROXY_TYPE=input-accel
E: SYSTEMD_WANTS=iio-sensor-proxy.service
E: TAGS=:systemd:seat:

P: /devices/platform/lis3lv02d/input/input24/event18
N: input/event18
L: 0
S: input/by-path/platform-lis3lv02d-event
E: DEVPATH=/devices/platform/lis3lv02d/input/input24/event18
E: SUBSYSTEM=input
E: DEVNAME=/dev/input/event18
E: MAJOR=13
E: MINOR=82
E: USEC_INITIALIZED=33932564
E: ID_INPUT=1
E: ID_INPUT_ACCELEROMETER=1
E: ID_PATH=platform-lis3lv02d
E: ID_PATH_TAG=platform-lis3lv02d
E: IIO_SENSOR_PROXY_TYPE=input-accel
E: SYSTEMD_WANTS=iio-sensor-proxy.service
E: LIBINPUT_DEVICE_GROUP=19/0/0:lis3lv02d
E: DEVLINKS=/dev/input/by-path/platform-lis3lv02d-event
E: TAGS=:systemd:

P: /devices/platform/lis3lv02d/input/input24/js0
N: input/js0
L: 0
E: DEVPATH=/devices/platform/lis3lv02d/input/input24/js0
E: SUBSYSTEM=input
E: DEVNAME=/dev/input/js0
E: MAJOR=13
E: MINOR=0
E: USEC_INITIALIZED=33147579
E: ID_INPUT=1
E: ID_INPUT_ACCELEROMETER=1
E: ID_PATH=platform-lis3lv02d
E: ID_PATH_TAG=platform-lis3lv02d
E: IIO_SENSOR_PROXY_TYPE=input-accel
E: SYSTEMD_WANTS=iio-sensor-proxy.service
E: TAGS=:systemd:
hadess commented 5 years ago

Disabling the driver should do it.

janbrummer commented 5 years ago

Yeah, right but then i loose disk protection. Not a good deal.

hadess commented 5 years ago

You still have a spinning disk in this machine? As far as I'm concerned, if the hp_accel driver creates an accelerometer device, then it needs to be consumable by user-space, otherwise it could all be handled internally.

I thought that the main problem with the HP devices were the orientation of the accelerometer.

Try setting ID_INPUT_ACCELEROMETER=0 in a udev rule? See: https://github.com/systemd/systemd/blob/master/hwdb/60-sensor.hwdb for details on how

janbrummer commented 5 years ago

Thanks for your quick response Bastien! I've fixed it by adding another quirk for my system and created a pull request for systemd: https://github.com/systemd/systemd/pull/13453

Therefore this one is obsolete. Thanks.