I attached my kern.log. Today (Mar 1 2019) this issue occurred sometime between 12:00 and 13:00.
I can see things like these, but don't know if they are related: Mar 1 12:29:25 T480 kernel: [50812.073470] WARNING: CPU: 0 PID: 2861 at /build/linux-Y38gIP/linux-4.15.0/drivers/gpu/drm/drm_vblank.c:1073 drm_wait_one_vblank+0x181/0x190 [drm] Mar 1 12:29:25 T480 kernel: [50812.073537] CPU: 0 PID: 2861 Comm: Xorg Tainted: G W O 4.15.0-42-generic #45-Ubuntu ** Attachment added: "Kernel log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1818219/+attachment/5242595/+files/kern.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1818219 Title: Lenovo T480 freezes after screen has been locked To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1818219/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
