Indeed the kernel seems to be crashing in drm graphics code so I'd recommend trying some newer kernels such as https://kernel.ubuntu.com/mainline/?C=M;O=D
** Package changed: xorg (Ubuntu) => linux (Ubuntu) ** Tags added: amdgpu dock multimonitor -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/2046802 Title: External display stay blank when connected through the docking station (HP USB-C Dock G5) but is OK when directly connected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2046802/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp