On 24/05/2023 13:12, Frederic Muller wrote:

Hi!

At each new Fedora release I have 3 thinkpads to 'upgrade'. In fact I do fresh installs for those and have a list of steps to perfom so I don't forget anything (list which I maintain and update at each release as things do change over time).

Desktop scaling is always tricky and this time I only get it to work on 1 of those 3 Thinkpads. They are 3rd, 6th and 8th generation ones. Currently it only works on the 8th gen one.

I type this:

gsettings set org.gnome.mutter experimental-features "['scale-monitor-framebuffer']"

On 3rd gen I can only do 100% and 200% and on 6th gen I cannot even do 200% as it says there is some HW limitation message preventing to change anything.

Any advice on how to troubleshoot the issue would be very welcome.

Thank you very much.

Fred

ok so I seem to have narrowed down the problem to the external Logitech keyboard. When I unplug it I can do fractional scaling on the LCD with no monitor connected, I can also do it with 1 external monitor connected, but it stops working at 2 monitors.

Could it be linked to g810-led from copr lkiesow/g810-led? I'm not with the laptop right now, I'll try to uninstall next time and will test again. In the meantime, i'm still open for ideas to troubleshoot and/or file a bug somehwere.

Thank you.

Fred