I have a Thinkpad T495 and a Trackpoint Keyboard II, which I’m using through the USB dongle on Manjaro, on kernel 6.7. A couple updates ago (not sure which kernel/system update triggered it, unfortunately), the fn+fnlock combination on my external keyboard stopped working - it still works on my laptop and I’m still able to use Fn+function keys to access sound control and so on. I noticed @rodrigoaguilera reported the same issue in a thread on a different topic and said it started with 6.5. Is anyone else experiencing this and / or has a workaround?
For context, sudo showkey shows code 465 when I press Fn+Fnlock.
Maybe. If, as is possible, it started with kernel 6.5 as you said is possible, you could try a different, earlier kernel version. Try 6.1, it’ll be maintained for qui8te some time:
Install it with:
sudo mhwd-kernnel --install linux61
Boot into that:
All available kernels installed on your system will be presented upon booting up. GNU GRUB is visible with a couple of options. Choose “Advanced Options for Manjaro Linux” by using the arrow keys ↑↓ on your keyboard and then ↵ Enter.
On the next screen (as illustrated) are backup copies of each kernel version installed (which will also be automatically removed if or when a kernel version is deleted). To select a kernel, simply use the arrow keys ↑↓ to highlight the desired version, and then press ↵ Enter.