2

I have HP Probook 4540S. My multimedia keys such as Wifi on/off & brightness control keys doesn't work with Ubuntu 13.04. (Keys function well with Ubuntu 12.04)

Both are working well in Windows.
Please give me a workaround..

4

I’m using hp4540s and I’ve stumled over this too. In Ubuntu 13.04 the kernel is 3.8.x-xx It supports WIFI out of the box but does not support Fn+brightness. If you go back to Ubuntu 12.04 with kernlel 3.2.x-xx you will have Fn-functions but you will not have WIFI. Workaround 1: http://www.ubuntugeek.com/how-to-fix-function-keys-fn-issue-after-upgrading-to-ubuntu-10-04lucid.html Follow the instructions BUT be sure to correct the NECESSARY line: GRUB_CMDLINE_LINUX="" After correction it should look as GRUB_CMDLINE_LINUX="acpi_backlight=vendor" Grub update needed. You’ll get you Fn+brightness keys working. BUT after each reboot the brightness will return to maximum. Workaround 2: I have decided to go back to 12.04 (actually linux mint 13 Maya). No Fn+brightness problems and the WIFI problem was perfectly solved with a new kernel 3.6.3. installation. http://compizomania.blogspot.com/2012/10/linux-kernel-363-ubuntu-12101204linux.html The tutorial is in Russian but it is understandable. Workaround 3: (only my invention - not tested though) Try downgrading kernel of your Ubuntu 13.04 from 3.8.x-xx to kernel 3.6.3

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.