New answers tagged brightness
I was getting mad with the same problem as Nomad's and DrNT007's solution worked great. I searched a bit on the net in order to hide the powershell window and came to this thread and found user2656928's solution the best suiting for me: just add the following code at the top of DrNT007's script and the powershell window will momentarily show and then ...
If you didn't want 5 to be echoed this also works: sudo sh -c 'echo 5 > /sys/class/backlight/acpi_video0/brightness'
The new Intel Graphics Control Panel does not have the option, even under battery mode: Therefore it is necessary to edit this in power management: As far as my understanding goes, if you have the NVIDIA drivers also installed, you should only have the 3D graphics options under the NVIDIA control panel. Hope this helps.
Try rolling back the display driver to the previous version. Control Panel > Device Manager (opens a window) > Display Adaptors > Intel(R) HD Graphics 4000 (double-click) > Driver (tab) > Roll Back Driver. It worked for me.
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