I guess this commit solves the issue:
1b1ffc57a1b2 platform/x86: dell-laptop: Fix bogus keyboard backlight sysfs
interface
Latest mainline kernel (v4.13-rc5) has this commit. Give it a try.
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Um hello! Is anybody home?
Has there been any progress on this bug?
Is there a way to find out?
Ah! Because it's happening now on my inspiron n4050!
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@Henry, No, I haven't. I don't have the Dell Inspiron M5110 laptop
anymore and I can't reproduce this error. You can feel free to open the
upstream bug report.
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I'm seeing my logs spammed with "dell_laptop: Keyboard brightness level
control not supported" too. Have you reported the bug upstream already?
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https://bugs.launchpad.net/bugs/1478696
This issue appears to be an upstream bug, since you tested the latest
upstream kernel. Would it be possible for you to open an upstream bug
report[0]? That will allow the upstream Developers to examine the issue,
and may provide a quicker resolution to the bug.
Please follow the instructions on
** Tags added: kernel-bug-exists-upstream
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https://bugs.launchpad.net/bugs/1478696
Title:
dell-laptop: Incorrect keyboard backlight detection
To manage notifications about this bug go
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.2 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
I believe all necessary logs are included in bug description.
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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https://bugs.launchpad.net/bugs/1478696
Title:
** Tags added: patch
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https://bugs.launchpad.net/bugs/1478696
Title:
dell-laptop: Incorrect keyboard backlight detection
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