It seems to be not related only to M3800 laptop but others like HP Spectre too. Regarding this topic I'm able to have a working touchscreen when I removed fwupd.
https://askubuntu.com/questions/1234975/touchscreen-stops-working-a-few- seconds-after-login-to-gnome-ubuntu-session-ubu I removed fwupd with the command "sudo apt remove fwupd" and rebooted the computer and now the touchscreen is working again. Do you need more informations ? -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-input-libinput in Ubuntu. https://bugs.launchpad.net/bugs/1886912 Title: DELL M3800 Touchscreen not working after login with fractional scaling. Status in libinput package in Ubuntu: New Status in mutter package in Ubuntu: New Status in xserver-xorg-input-libinput package in Ubuntu: New Bug description: Hello, I have freshly installed Ubuntu 20.04 and have a bug on my M3800. The touchscreen is working good on login screen bug after I enter my credentials and the gnome session open I can't use it. I'm on a dual boot computer and all is working well on Windows 10. How can I help you to track this bug and solve it ? Best regards To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libinput/+bug/1886912/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
