Acer Aspire 4349 backlight unable to dim, slider moves only with no effect, NON-BIOS controlled, how-to configure software to actually dim the sucker rather than just moving a slider-indicator?

Tried suggestion found by using Cairo Dock and "Luminosity", but it's not the real deal, (not looking for a mere gamma adjustment), although this "gama adjustment" works (looks like shyt, though), I'm looking for an actual effective LED back-light controller.

I think I made a mistake buying an Acer, sticking with MSI, for rats sake, at least, their backlight is controlled directly through the BIOS! What kind of crap controls this backlight with "software"...hell, just 2 LED indicators that work "weirdly", only thing I like 'bout this acer is surprisingly the Celeron B815. Not a damned thing else!

sudo sed -i.backup -r '/^GRUB_CMDLINE_LINUX_DEFAULT=/ s/=.*/="quiet splash pcie_aspm=force acpi_backlight=vendor"/g'  /etc/default/grub
sudo grub-update

Note that we have made a backup in the sed command, which ensures a recovery on error

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.