This bug was fixed in the package linux-oem - 4.15.0-1024.29
---------------
linux-oem (4.15.0-1024.29) bionic; urgency=medium
* linux-oem: 4.15.0-1024.29 -proposed tracker (LP: #1797069)
* Keyboard backlight sysfs sometimes is missing on Dell laptops (LP: #1797304)
- platform/x86: dell-smbios: Correct some style warnings
- platform/x86: dell-smbios: Rename dell-smbios source to dell-smbios-base
- platform/x86: dell-smbios: Link all dell-smbios-* modules together
- [Config] CONFIG_DELL_SMBIOS_SMM=y, CONFIG_DELL_SMBIOS_WMI=y
- [Config] CONFIG_DELL_SMBIOS_SMM=y, CONFIG_DELL_SMBIOS_WMI=y
[ Ubuntu: 4.15.0-38.41 ]
* linux: 4.15.0-38.41 -proposed tracker (LP: #1797061)
* Silent data corruption in Linux kernel 4.15 (LP: #1796542)
- block: add a lower-level bio_add_page interface
- block: bio_iov_iter_get_pages: fix size of last iovec
- blkdev: __blkdev_direct_IO_simple: fix leak in error case
- block: bio_iov_iter_get_pages: pin more pages for multi-segment IOs
-- Chia-Lin Kao (AceLan) <[email protected]> Tue, 16 Oct 2018
10:32:03 +0800
** Changed in: linux-oem (Ubuntu Bionic)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1727235
Title:
Dell new AIO requires a new uart backlight driver
Status in HWE Next:
New
Status in OEM Priority Project:
Triaged
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem package in Ubuntu:
Invalid
Status in linux source package in Bionic:
Fix Released
Status in linux-oem source package in Bionic:
Fix Released
Bug description:
[Impact]
New Dell AIO platforms requires a driver that ​can communicate with the
scalar IC FW through UART interface to get and set the brightness level.
[Test]
Verified on some new Dell machines and confirmed it works.
[Fix]
Write a new driver to handle this task.
[Regression Potential]
Low, it's a new driver for new interface.
[Misc]
Upstream maintainer ask use to re-implement this driver by the new
interface, serdev, but serdev seems doesn't work with ACPI, so submit
this driver as Ubuntu sauce patch for now. I'll try re-write it when I'm
available.
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