Public bug reported:
We are encountering issues, that when enabling some Dell laptops, the readings
from iio-poll-als are unstable, or could freeze on certain value. On these
systems they have ENV{IIO_SENSOR_PROXY_TYPE}="iio-poll-als iio-buffer-als", and
removing iio-poll-als makes reading stable.
This adds workaround to the affected Dell laptop models which may equip with
ALS.
[Impact]
* Only models matching the same device BIOS IDs are affected.
[Test Plan]
* Pick devices which BIOS IDs are listed in the patch, and test whether
it's ambient light sensors are working properly without unexpected
brightness flickers.
[Where problems could occur]
* Machines matching the same BIOS ID, either having ALS built-in or
not, but attached ambient light sensors externally (for example,
ColorHug ALS) might experience failures.
[Other Info]
* Upstream merge request:
https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/-/merge_requests/352
** Affects: iio-sensor-proxy (Ubuntu)
Importance: Undecided
Status: New
** Tags: focal jammy
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https://bugs.launchpad.net/bugs/1963628
Title:
Force IIO_SENSOR_PROXY_TYPE to iio-buffer-als for some Dell models
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