This bug was fixed in the package linux-oem-osp1 - 5.0.0-1043.48
---------------
linux-oem-osp1 (5.0.0-1043.48) bionic; urgency=medium
* bionic/linux-oem-osp1: 5.0.0-1043.48 -proposed tracker (LP:
#1867111)
* All PS/2 ports on PS/2 Serial add-in bracket are not working after S3
(LP: #1866734)
- SAUCE: Input: i8042 - Fix the selftest retry logic
* r8152 init may take up to 40 seconds at initialization with Dell WD19/WD19DC
during hotplug (LP: #1864284)
- UBUNTU SAUCE: r8151: check disconnect status after long sleep
* Miscellaneous Ubuntu changes
- [Config] Bump the GCC version
-- Timo Aaltonen <timo.aalto...@canonical.com> Thu, 12 Mar 2020
11:14:40 +0200
** Changed in: linux-oem-osp1 (Ubuntu)
Status: Invalid => Fix Released
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https://bugs.launchpad.net/bugs/1865402
Title:
Stop using get_scalar_status command in Dell AIO uart backlight driver
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-osp1 package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Committed
Status in linux-oem-osp1 source package in Bionic:
Fix Released
Status in linux source package in Eoan:
Fix Committed
Status in linux source package in Focal:
In Progress
Bug description:
[Impact]
The get_scalar_status command was provided by ODM engineer and was newly
introduced to determinate whether scalar is responsible for the backlight
adjustment. That guy asked the scalar vendor to add this command and the
command works as expected. But there is already a command in the Dell AIO
scalar UART command spec. which can do the same thing since 2015, and the newly
introduced get_scalar_status command is undocumented. To prevent from
introducing regression in the future and to align with what Windows uses,
replace this command with get_display_mode command.
[Fix]
Replace get_scalar_status command with get_display_mode command.
[Test]
Verified on new Dell AIO platforms.
[Regression Potential]
Low, the command is already in the spec. since 2015.
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