[Bug 219890] illuminance sensor is jittering between correct value and 0.03lux

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=219890

--- Comment #17 from Fred (wysiwyg81@rbox.co) ---
Hello Srinivas,

I have some trouble again to access bugzilla website (error 
502/504)..cannot see the patch right now.

I try again answering by email directly, hope it will keep better 
formatting than previous attempt.

In the mean time, I tried the following command. The unexpected "3" are 
very visible here.

❯ watch -n 0.7 "echo \$(date '+%Y-%m-%d %H:%M:%S') \$(cat 
/sys/bus/iio/devices/iio:device0/in_illuminance_raw) | tee -a 
log_illuminance.txt"

I attach log_illuminance.txtto the email.

iio_sensor_proxy is still disabled for those measurements.

I'll try to setup the patch as soon as I can access to it.

Best regards,

Fred

On 19/03/2025 01:54, bugzilla-daemon@kernel.org wrote:
> https://bugzilla.kernel.org/show_bug.cgi?id=219890
>
> --- Comment #16 from Srinivas Pandruvada
> (srinivas.pandruvada@linux.intel.com) ---
> It seems that with raw reads with ON/OFF there may be some bad data from
> sensor
> hub.
> Unfortunately, need a kernel built with patch for debug dump.
>
> Remove iio sensor proxy from running and reboot
>
> Before run
> echo 'file hid-sensor-trigger.c +p' > /sys/kernel/debug/dynamic_debug/control
> echo 'file hid-sensor-hub.c +p' > /sys/kernel/debug/dynamic_debug/control
>
> watch -n 0.7 cat /sys/bus/iio/devices/iio:device0/in_illuminance_raw
>
> Send the output from dmesg command.
>

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