Low brightness: Ubuntu 13.04

Wednesday, May 1, 2024

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Low brightness: Ubuntu 13.04

rated 0 times [ 0] [ 0] / answers: 1 / hits: 1206 / 2 Years ago, tue, july 19, 2022, 6:12:26

I recently dual booted my Windows 8 with Ubuntu 13.04. The first thing that came to my notice was that the brightness was too low. I increased the brightness to maximum from system settings, but still, it remains low. I did not face any such issue with Ubuntu 12.10 that I had earlier.

Graphics Card: ATI Radeon 7730M

Laptop Model: Dell Inspiron 15R Turbo

So, is there a way to increase the brightness to the actual maximum?

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Answers

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you may need to use the acpi_osi='!Windows 2012' boot parameter

sudo sed -i "s/quiet splash/quiet splash acpi_osi='!Windows 2012'/" /etc/default/grub;sudo update-grub;echo 'Reboot to apply'

here is the command to undo that, if it makes it worse or does not do anything

sudo sed -i "s/ acpi_osi='!Windows 2012'//" /etc/default/grub;sudo update-grub;echo 'Reboot to apply'

[#31229] Thursday, July 21, 2022, 2 Years [reply] [flag answer]

answered 2 Years ago

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