Hello, today I did a fresh install of Leap 42.3 on an old hp laptop, Pavilion dv9700. Some FN keys work, like Play/Pause of Print. Also, special buttons outside the normal keyboard works as well. But FN keys for brightness does not. I can control brightness, and I have map the actions to other shortcuts temporarily.
The hp_wmi module is active. My card is an nvidia and I installed its driver from YaST after adding the repo (before the driver the keys weren’t working either).
Am I missing something? Is there something else to try?
Hi, I don’t know how the BIOS in your HP model might behave, but in a laptop of mine I need to insert "acpi_osi= " including the trailing space in the Grub boot line for the brightness keys to work.
Other choices might include “acpi_osi=Linux” or other hints as found at https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt
The Nvidia GPU might also require special handling, if the above doesn’t work. The README file included in the Nvidia driver or the Nvidia Forums might help if that is the case.
I’ve been trying different options but none of them works. Actually, I can map brightness up and down to other key combinations. But FN+F7/F8 doesn’t seem to be recognized by the system.
I assume you’re referring to desktop-related key mappings for brightness adjustment? They rely on xrandr (in user space), rather than the ACPI kernel module for video.
No, I don’t think the age of the machine is a problem here. Some of the HP Pavillion models seem to have BIOS quirks that can cause issues like this. A quick search turns up a large number of similar threads and bug reports.
Did you try the kernel parameters I suggested a couple of posts back?
What’s the running desktop ? Quite recently I had to manually select the HP dv5 keyboard on a different model ( not mine and don’t remember ) to get all the Fn keys working. But this seems to be something else.
Unfortunaltey, I’ve been experiencing the same problem. In my case however, it has worked flawlessly using Leap 15.3 using the following grub modification:
I’ve just upgraded to Leap 15.4 and now my brightness Fn keys won’t work anymore. I can still change brightness using the slider in the battery settings, but not with the dedicated keys.
