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Thanks Neil! This method works fine. I hope someday somebody will fix
it. In any case, I'll leave it here:
Step 1: Fire a terminal (Obviously)
Step 2: Finding the correct module.
Run the following command:
$ ls /sys/class/backlight/
This should list down two modules:
acpi_video0 and intel_backli
This appears to be quite an old issue with Optimus graphics. For me the
workaround was to pass specific kernel parameters at boot time to inhibit acpi
control of the backlight but allow intel_backlight control
I followed the instructions at
https://nisheetlall.wordpress.com/2016/07/12/solved-bri
my laptop also has a graphics card with optimus
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Title:
I can't adjust display brightness
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I have the same problem using an ASPIRE 5750G-9463, using Optimus.
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Title:
I can't adjust display brightness
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I found that the brightness controls (via function key or sliders in power
management) were changing the values in
/sys/class/backlight/acpi_videos0/brightness, but nothing changed in
/sys/class/backlight/intel_backlight/brightness.
When I edited the value in /sys/class/backlight/intel_backlight
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xorg (Ubuntu)
Status: New => Confirmed
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Title:
I can
in Unity session, the adjustment works fine
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Title:
I can't adjust display brightness
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in X.org session adjustment not working
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Title:
I can't adjust display brightness
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