Hello! I think i got the same issue. Using a Thinkpad T440 with a Dockingstation (Ultra Dock) using two external Monitors. The attached kernel.log contains all infos from the time i unlocked my laptop until i turned it off because it is completly frozen. I cannot reproduce it, but it occures maybe two times a week.
System infos: sudo lshw -C video PCI (sysfs) *-display Beschreibung: VGA compatible controller Produkt: 4th Gen Core Processor Integrated Graphics Controller Hersteller: Intel Corporation Physische ID: 2 Bus-Informationen: pci@0000:00:02.0 Version: 06 Breite: 64 bits Takt: 33MHz Fähigkeiten: msi pm vga_controller bus_master cap_list rom Konfiguration: driver=i915 latency=0 Ressourcen: irq:28 memory:f0000000-f03fffff memory:e0000000-efffffff ioport:3000(Größe=64) memory:c0000-dffff uname -a Linux tp-T440p 4.15.0-66-generic #75-Ubuntu SMP Tue Oct 1 05:24:09 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux ** Attachment added: "kernel log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1727662/+attachment/5304201/+files/kernel.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1727662 Title: [Lenovo ThinkPad T450s] Issues after docking and locking To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1727662/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs