[Bug 216221] Re: Samsung Q70 - error while modprobing video, also can't adjust backlight

[Wildy]

I've finally succeeded with adjusting the screen brightness.

Firstly, I've added acpi_fake_ecdt=1 option to boot parameters.
Then switched to the console and was able to adjust the brightness by

cat $VALUE > /proc/acpi/video/NVID/LCD/brightness.

However, this still doesn't work for adjusting the brightness from
within X.

The video module still would crash, too.

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Samsung Q70 - error while modprobing video, also can't adjust backlight
https://bugs.launchpad.net/bugs/216221
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