Hi! I got a quite old Lenovo YOGA 700-11ISK with flip screen and run fedora29 on it. I found that gnome3 cannot properly detect the screen orientation and the screen keeps rotating non stop. I opened an issue agains iio-sensor-proxy, not much luck there. https://github.com/hadess/iio-sensor-proxy/issues/220 I resumed my debugging and the situation seems improving. The yoga is running fedora29 v4.20.14. The fedora's iio-sensor-proxy still has this problem and so does the iio-sensor-proxy upstream version. Then I commented out &iio_buffer_accel to make &iio_poll_accel work - and things worked nicely. I looked in sysfs and in_accel_?_raw seem to have correct values (same as in the first log below, give or take), all good. Recorded some debug from iio-sensor-proxy: Accel read from IIO on 'accel_3d': -39, -937, -378 (scale 0.009807) Accel sent by driver (quirk applied): -39, -937, -378 (scale: 0.009807) Emitted orientation changed: from undefined to normal No new data available on 'iio:device3' Accel read from IIO on 'accel_3d': -39, -933, -371 (scale 0.009807) Accel sent by driver (quirk applied): -39, -933, -371 (scale: 0.009807) No new data available on 'iio:device3' Accel read from IIO on 'accel_3d': -39, -933, -367 (scale 0.009807) Accel sent by driver (quirk applied): -39, -933, -367 (scale: 0.009807) This is the good log, gnome works fine. Then I recorded debug with the buffer driver enabled: rocess_scan_1: channel_index: 0, chan_name: in_accel_x, channel_data_index: 0 location: 0 process_scan_1: channel_index: 1, chan_name: in_accel_y, channel_data_index: 1 location: 4 process_scan_1: channel_index: 2, chan_name: in_accel_z, channel_data_index: 2 location: 8 Accel read from IIO on 'iio:device4': -15, -898, -375 (scale 0.009807) Accel sent by driver (quirk applied): -15, -898, -375 (scale: 0.009807) Emitted orientation changed: from undefined to normal No new data available on 'iio:device3' process_scan_1: channel_index: 0, chan_name: in_accel_x, channel_data_index: 0 location: 0 process_scan_1: channel_index: 1, chan_name: in_accel_y, channel_data_index: 1 location: 4 process_scan_1: channel_index: 2, chan_name: in_accel_z, channel_data_index: 2 location: 8 Accel read from IIO on 'iio:device4': 20774, 27203, 0 (scale 0.009807) Accel sent by driver (quirk applied): 20774, 27203, 0 (scale: 0.009807) Emitted orientation changed: from normal to left-up No new data available on 'iio:device3' process_scan_1: channel_index: 0, chan_name: in_accel_x, channel_data_index: 0 location: 0 process_scan_1: channel_index: 1, chan_name: in_accel_y, channel_data_index: 1 location: 4 process_scan_1: channel_index: 2, chan_name: in_accel_z, channel_data_index: 2 location: 8 Accel read from IIO on 'iio:device4': -31, -929, -398 (scale 0.009807) Accel sent by driver (quirk applied): -31, -929, -398 (scale: 0.009807) Emitted orientation changed: from left-up to normal No new data available on 'iio:device3' process_scan_1: channel_index: 0, chan_name: in_accel_x, channel_data_index: 0 location: 0 process_scan_1: channel_index: 1, chan_name: in_accel_y, channel_data_index: 1 location: 4 process_scan_1: channel_index: 2, chan_name: in_accel_z, channel_data_index: 2 location: 8 Accel read from IIO on 'iio:device4': -14345, -32024, 12738 (scale 0.009807) Accel sent by driver (quirk applied): -14345, -32024, 12738 (scale: 0.009807) So it is good reading, bad reading, good reading, bad reading, and gnome rotates the screen non stop. No wonder gnome3 goes crazy. I would debug further and even come up with a fix but I failed to find quickly where there reads are handled in the kernel, and what defines these in_accel_?_raw files in sysfs, tried grepping - nothing. Any pointers? Also, how do I identify my particular 3d sensor? Or it is the same model everywhere? Or it is the driver for all of them? Here is dmesg | grep i2c: [root@aikyoga iio:device4]# dmesg | egrep '(i2c|iio)' [ 5.389867] i2c_hid i2c-ITE8350:00: i2c-ITE8350:00 supply vdd not found, using dummy regulator [ 5.389893] i2c_hid i2c-ITE8350:00: Linked as a consumer to regulator.0 [ 5.389896] i2c_hid i2c-ITE8350:00: i2c-ITE8350:00 supply vddl not found, using dummy regulator [ 5.502896] hid-generic 0018:048D:8350.0002: hidraw1: I2C HID v1.00 Device [ITE8350:00 048D:8350] on i2c-ITE8350:00 [ 5.528455] i2c_hid i2c-SYNA2B23:00: i2c-SYNA2B23:00 supply vdd not found, using dummy regulator [ 5.528485] i2c_hid i2c-SYNA2B23:00: Linked as a consumer to regulator.0 [ 5.528489] i2c_hid i2c-SYNA2B23:00: i2c-SYNA2B23:00 supply vddl not found, using dummy regulator [ 5.543440] input: SYNA2B23:00 06CB:2714 Mouse as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-6/i2c-SYNA2B23:00/0018:06CB:2714.0003/input/input13 [ 5.543690] hid-generic 0018:06CB:2714.0003: input,hidraw2: I2C HID v1.00 Mouse [SYNA2B23:00 06CB:2714] on i2c-SYNA2B23:00 [ 6.053237] input: Synaptics TM2714-002 as /devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-6/i2c-SYNA2B23:00/0018:06CB:2714.0003/input/input16 [ 6.053444] hid-rmi 0018:06CB:2714.0003: input,hidraw1: I2C HID v1.00 Mouse [SYNA2B23:00 06CB:2714] on i2c-SYNA2B23:00 Thanks! -- Alexey
