@Corben check out #1674838 (#1689538 is marked a duplicate of #1674838). Per your syslog you're getting the swapops.h:129 error before the soft lockups, as I was.
Installing the kernel recommended there resolved the swapops.h:129 error for me. I believe the fix is coming into updates on the 5th of June. I was stable for 20 days with that kernel however I've just got the following, so now I'm hunting around again... "NMI watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [pool:16907]" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1688587 Title: NMI watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [khugepaged:38] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta-hwe-edge/+bug/1688587/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs