I cannot find the brightness setting in Ubunutu 20.04 LTS in my Acer Nitro 5 Laptop

Question

I am unable to set the brightness level of an Acer Nitro 5 laptop in Ubuntu 20.04 LTS in settings or in the title bar.

I don't have this particular laptop, but you could try modifying your GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub to include acpi_osi='!Windows 2015', like so: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi='!Windows 2015'". Then run: sudo update-grub and reboot. — Andy Turfer, Apr 26 '20 at 10:10

score 0 · Answer 1 · answered Apr 25 '20 at 15:43

I have the same problem. Until it's resolved, try: xrandr ..you should get something like: Screen 0: minimum 320 x 200, current 2880 x 1024, maximum 8192 x 8192 LVDS-1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 382mm x 215mm 1600x900 60.08*+ 59.99 59.94 59.95 59.82
1440x900 59.89
1400x900 59.96 59.88
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
..and so on then: xrandr --output LVDS-1 --brightness 0.95

this works for me, for the time being.

score 0 · Answer 2 · answered May 07 '20 at 19:32

0

I got it, this has been answered for 18.04 and it was the method I used before upgrading to 20.04.

Brightness problem Ubuntu 18.04 LTS

answered May 07 '20 at 19:32

Giorgos Saridakis

736

I cannot find the brightness setting in Ubunutu 20.04 LTS in my Acer Nitro 5 Laptop

2 Answers2