I am seeing a lot of crashes in the i915 kernel driver in your kernel log like:
May 28 15:54:36 nix-us2ua34705wc kernel: Call Trace: May 28 15:54:36 nix-us2ua34705wc kernel: intel_atomic_commit+0x2b8/0x2f0 [i915] May 28 15:54:36 nix-us2ua34705wc kernel: drm_atomic_commit+0x4a/0x50 [drm] May 28 15:54:36 nix-us2ua34705wc kernel: drm_mode_atomic_ioctl+0x8e9/0xa00 [drm] This suggests it might be a kernel bug. But I also know the atomic API is only used by the Xorg modesetting driver. You might be able to avoid the problem then by logging into "Ubuntu on Wayland". Does that work? ** Also affects: xorg-server (Ubuntu) Importance: Undecided Status: New ** Also affects: linux (Ubuntu) Importance: Undecided Status: New ** Summary changed: - Rotated display is overscaled and overdrawn + [i915] Rotated display is overscaled and overdrawn ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Changed in: mutter (Ubuntu) Status: New => Incomplete ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- 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/1830792 Title: [i915] Rotated display is overscaled and overdrawn Status in gnome-shell package in Ubuntu: Incomplete Status in linux package in Ubuntu: Incomplete Status in mutter package in Ubuntu: Incomplete Status in xorg-server package in Ubuntu: Incomplete Bug description: On my system I have two display: one in landscape, and one in portrait. The landscape display is fine, but the portrait display is corrupted. If I unplug the display from the computer for some time and then plug it back in it will occasionally fix the problem. Once the problem is fixed, the display works perfectly fine, indefinitely. However, as soon as I reboot the computer the display will come up corrupted again and never recovers without many rounds of plug/unplug turn off/turn on. It's extremely frustrating. ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: gnome-shell 3.32.0+git20190410-1ubuntu1 ProcVersionSignature: Ubuntu 5.0.0-15.16-generic 5.0.6 Uname: Linux 5.0.0-15-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.10-0ubuntu27 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Tue May 28 15:57:02 2019 DisplayManager: gdm3 GsettingsChanges: b'org.gnome.shell' b'command-history' redacted by apport b'org.gnome.shell' b'favorite-apps' redacted by apport b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'" ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/usr/bin/fish SourcePackage: gnome-shell UpgradeStatus: Upgraded to disco on 2019-04-22 (36 days ago) modified.conffile..etc.logrotate.d.apport: [modified] mtime.conffile..etc.logrotate.d.apport: 2019-01-12T15:50:59.090583 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1830792/+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