It seems pretty similar to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1940113.
Could you test the following kernel to see which version helps? https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.13.12/ https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14-rc3/ https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.14-rc7/ -- 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/1939071 Title: Dual screen not working Status in linux package in Ubuntu: Incomplete Bug description: Ubuntu 5.11.0-25.27~20.04.1-generic 5.11.22 Dual screen issue with kernel family 5.11. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1939071/+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