Public bug reported:
[Impact]
We already added retry on the backlight driver, but the scalar have to take
some time to activate panel during booting up, and 2 seconds seem doesn't
enough. So, it sometimes fails to get the response from scalar.
[Fix]
Enlarge the retry time from 2 seconds to 5 seconds.
We didn't observe the response time longer than 3 seconds, but to be more
confident, enlarge the value to 5 seconds.
[Test]
Verified on new Dell AIO platform.
[Regression Potential]
Low, increase the retry times doesn't hurt anything.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-oem-osp1 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Affects: linux-oem-osp1 (Ubuntu Bionic)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Eoan)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: linux-oem-osp1 (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: linux-oem-osp1 (Ubuntu Eoan)
** No longer affects: linux-oem-osp1 (Ubuntu Focal)
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https://bugs.launchpad.net/bugs/1862885
Title:
Sometimes can't adjust brightness on Dell AIO
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