ALS function lost after suspend/resume

[Kai-Chuan Hsieh]

[Impact]

 * Some Dell machine support ALS (ambient light sensor) will lost function after suspend/resume
   It originally only report iio-buffer-als by udev rule, but the buffer no longer update after
   suspend/resume, the issue can be eliminated by polling in_illuminance_raw node.

[Test Plan]

 * Boot a machine with ALS support, and check it by
   $ cat /sys/bus/iio/devices/iio:device*/name => see if it contains name als
 * do suspend/stress by
   $ sudo -s
   # for i in `seq 20`; do sleep 5; rtcwake -m mem -s 10; done
 * run monitor-sensor and cover your hand on the light sensor
   $ monitor-sensor
 * if the als function lost, there should be no update of the ambient light sensor anymore

[Where problems could occur]

 * The change add in_illuminance_raw check and add iio-poll-als to IIO_SENSOR_PROXY_TYPE for sensor using raw value.

 * It will keep original IIO_SENSOR_PROXY_TYPE and multiple IIO_SENSOR_PROXY_TYPE support, so risk is low for other hardware.

 * Checking on working hardware and run $ monitor-sensor
   it should keep popping Light changed event no matter what operations,
   close lid, suspend/resume, reboot...etc.

[Other Info]

 * The change is from upstream which has been in groovy and hirsute.
   https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/-/commit/eb8fde8fd246ea6c30a8d4a29d6061b42f7012f2
   https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/-/commit/de1e1ea35aea81a4b5c22cb2458e9686911fb383

[Kai-Chuan Hsieh (kchsieh)]

Upload focal iio-sensor-proxy_2.8-1ubuntu1.debdiff.

[Sebastien Bacher (seb128)]

Thanks, closing for the current serie, the changes have also been uploaded to focal now

[Kai-Chuan Hsieh (kchsieh)]

@seb128

thanks for your quick response, may I know when will it be in update channel?

Thanks,

[Brian Murray (brian-murray)]

Hello Kai-Chuan, or anyone else affected,

Accepted iio-sensor-proxy into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/iio-sensor-proxy/2.8-1ubuntu1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

[Kai-Chuan Hsieh (kchsieh)]

Run on Dell machine with ALS and support in_illuminance_raw node.

$ monitor-sensor => to check the Light changed event
$ sudo -s
# for i in `seq 20`; do sleep 5; rtcwake -m mem -s 10; done

The light changed event keeps updating after the multiple suspend/resume operation.

[Andy Chi (andch)]

[Test Machine]
Dell XPS 9310

[OS Version]
Focal 20.04

[BIOS Version]
2.1.1

[Expect Result]
monitor-sensor keeps updating after suspend/resume 20 times.

[Łukasz Zemczak (sil2100)]

Please record the version number of the package used for verification next time.

[Launchpad Janitor (janitor)]

This bug was fixed in the package iio-sensor-proxy - 2.8-1ubuntu1

---------------
iio-sensor-proxy (2.8-1ubuntu1) focal; urgency=medium

  * Support polling for sensor using raw value (LP: #1926280)
    d/p/0001-light-Support-sensors-using-raw-values-as-well.patch
    d/p/0001-drivers-Support-multi-function-sensors.patch

 -- Kai-Chuan Hsieh <email address hidden> Tue, 27 Apr 2021 17:28:32 +0800

[Łukasz Zemczak (sil2100)]

The verification of the Stable Release Update for iio-sensor-proxy has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.