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
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https://bugs.launchpad.net/bugs/1727662
Title:
[Lenovo ThinkPad T450s] Issues after docking and locking
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