On Mon, 17 Mar 2025 13:02:24 +0000 bugzilla-daemon@xxxxxxxxxx wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=219890 > > --- Comment #2 from wysiwyg81@xxxxxxx --- > Hello, Did you mean in /sys/bus/iio/devices/ instead of > /sys/iio/devices/ if so: /sys/bus/iio/devices ❯ ls -lh Permissions Size > User Date Modified Name lrwxrwxrwx - root 17 mars 13:43 iio:device0 -> > ../../../devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/0003:17EF:F006.000E/HID-SENSOR-200041.6.auto/iio:device0 > lrwxrwxrwx - root 17 mars 13:43 iio:device1 -> > ../../../devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/0003:17EF:F006.000E/HID-SENSOR-200041.7.auto/iio:device1 > lrwxrwxrwx - root 17 mars 13:43 trigger0 -> > ../../../devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/0003:17EF:F006.000E/HID-SENSOR-200041.6.auto/trigger0 > lrwxrwxrwx - root 17 mars 13:43 trigger1 -> > ../../../devices/pci0000:00/0000:00:14.0/usb3/3-8/3-8:1.0/0003:17EF:F006.000E/HID-SENSOR-200041.7.auto/trigger1 > > (bugzilla seems down currently, so I try direct email answer, hope it > works, I will check once bugzilla is back). Perfect. So it is definitely a hid sensor. Srinivas any idea? > > Best regards, > > On 17/03/2025 13:15, bugzilla-daemon@xxxxxxxxxx wrote: > > https://bugzilla.kernel.org/show_bug.cgi?id=219890 > > > > --- Comment #1 from Jonathan Cameron (jic23@xxxxxxxxxx) --- > > On Mon, 17 Mar 2025 09:38:50 +0000 > > bugzilla-daemon@xxxxxxxxxx wrote: > > > >> https://bugzilla.kernel.org/show_bug.cgi?id=219890 > >> > >> Bug ID: 219890 > >> Summary: illuminance sensor is jittering between correct value > >> and 0.03lux > >> Product: Drivers > >> Version: 2.5 > >> Hardware: All > >> OS: Linux > >> Status: NEW > >> Severity: normal > >> Priority: P3 > >> Component: IIO > >> Assignee: drivers_iio@xxxxxxxxxxxxxxxxxxxxxx > >> Reporter: wysiwyg81@xxxxxxx > >> Regression: No > >> > >> Hello, > >> > >> I have a Lenovo thinkbook 13x gen4. > >> Automatic brightness control is flickering in Gnome, so I checked sensor > >> with > >> monitor-sensor command (iio-sensor-proxy). > >> > >> it shows following behavior: > >> monitor-sensor --light > >> Waiting for iio-sensor-proxy to appear > >> +++ iio-sensor-proxy appeared > >> === Has ambient light sensor (value: 316,000000, unit: lux) > >> Light changed: 299,000000 (lux) > >> Light changed: 0,030000 (lux) > >> Light changed: 299,000000 (lux) > >> Light changed: 0,030000 (lux) > >> Light changed: 299,000000 (lux) > >> Light changed: 0,030000 (lux) > >> Light changed: 305,000000 (lux) > >> > >> > >> the 0.03 is unexpected has it has never been that dark. > >> it seems it's not a iio-sensor-proxy bug as I can see similar behavior by > >> checking directly content of here : > >> /sys/bus/iio/devices/iio:device0/in_illuminance_raw > >> > >> > >> I checked the behavior on windows to make sure it's not an hardware failure > >> from my sensor. > >> While I cannot have direct access to raw sensor data on windows, the > >> automatic > >> brightness is perfectly smooth: no flickering of any kind. > >> > >> I didn't found sensor name: > >> ❯ cat /sys/bus/iio/devices/iio:device0/name > >> als > > Two possibles types. It's either a hid sensor or an ACPI class interface > > with a sensor wrapped up in firmware. > > > > My guess is hid-sensor. Can you do an > > ls -lh in /sys/iio/devices/ > > so we can see what the parent is. > > +CC Srinivas based on playing guess the sensor. > > > > Jonathan > > > > > > > > > > > >> But if there is other place I could look, let me know. > >> >
