My laptop is Samsung NP-Q430-JS03US.
I have searched for the solution. I have tried editing grub acpi_osi=Linux and acpi_backlight=vendor, but still didn't work.
on 02/08/2013 – Made popular on 02/08/2013
My laptop is Dell Inspiron n5010 with Linux Mint. Whenever i tried to adjust the screen brightness the laptop got stuck and nothing works after that until i force restart the system. I tried to make some changes in the 'grub' file (GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor acpi_osi=Linux") & updated grub(sudo update-grub) after some research, but that didn't help me.
My laptop is Dell Inspiron n5010 with Linux Mint. Whenever I tried to adjust the screen brightness the laptop got stuck and nothing works after that until I force restarted the system. I tried to make some changes in the 'grub' file.
I upgraded to Kubuntu 13.04 yesterday and after that the brightness changing function is not working.
Before this operation, I was running Kubuntu 12.10 with additional driver for Nvidia GT425M. Brightness changing worked well all the time.
I have a Sony E series laptop (64 bit) where keys Fn+F5 and Fn+F6 should control the screen brightness. On my machine these keys do control the brightness "slider", but they do not control the actual screen brightness. I am running Ubuntu 12.10.
Hello! I have just installed Ubuntu 12.10 on my Acer Aspire One 725 but I cannot seem to adjust my screen brightness and it is stuck on maxmimum draining my battery quickly. I have searched through every thread but nothing seems to work for my specific laptop. I have tried editing my
as tried in many other threads but it has not worked for me.
Wasn't sure where to put this, hopefully this section will do:
I see the question regarding brightness on Toshibas asked a lot, and I personally managed to fix it by adding the acpi_backlight=vendor line to my grub boot options and I can now adjust the brightness via the Settings -> Brightness menu. However, my function keys still do not work properly.
I have an Asus laptop that I installed 12.10 on some time ago. At first, I was unable to change the screen brightness via the keyboard or power management settings, but I was able to fix this by adding "acpi_backlight=vendor" to GRUB_CMDLINE_LINUX_DEFAULT in my GRUB settings. After upgrading to 13.04, this fix no longer works and I'm back to being unable to change the screen brightness.