I Think this problem is related to kernel or Gnome. Tried with Nvidia proprietary driver and Intel driver and the problem is the same.
** Package changed: ubuntu => linux (Ubuntu) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1886912 Title: DELL M3800 Touchscreen not working after login Status in linux 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/linux/+bug/1886912/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
