Public bug reported:
Two issues here:
1. No sysfs "/sys/devices/platform/dell-laptop/leds/dell::kbd_backlight"
The patch fixes the issue:
commit 8d2c4538dbc7154c4aed1364db127a0e51dbd459
Author: Alex Hung <[email protected]>
Date: Thu Feb 16 20:58:03 2017 +0800
platform/x86: dell-laptop: Add Latitude 7480 and others to the DMI
whitelist
2. The sysfs exits, but backlight cannot be controlled by "brightness"
attribute.
The patch fixes the issue:
commit 9216e0dcb5533a999d544d0af8661118e0588e1d
Author: Pali Rohár <[email protected]>
Date: Sun Apr 23 21:40:47 2017 +0200
platform/x86: dell-laptop: Add keyboard backlight timeout AC
settings
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Kai-Heng Feng (kaihengfeng)
Status: Confirmed
** Tags: originate-from-1689427 somerville
** Tags added: originate-from-1689427 somerville
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https://bugs.launchpad.net/bugs/1693126
Title:
Keyboard backlight control does not work on some dell laptops.
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