Hello, I am having same issue. Fresh install of Ubuntu 18.04. Could not boot from bootable flash installer until I added "acpi_rev_override=1" to boot params. Kernel 4.15 would lockup after login screen. Was able to login couple of times but system would eventually lockup randomly while using it and when I tried to shutdown/restart.
I was able to install the latest kernel 4.17 in recovery mode. I can now login however when I try to shutdown/restart system locks up. So far I have not had random freezing of system while using. Main problem is shutdown/restart. Completely unresponsive even when using Ctrl+Alt+F1 or F2. Hardware: Dell XPS 15 9560, i7-7700HQ 2.8GHz Touch screen disabled in bios, no fingerprint reader If my issue is different let me know and I'll open a new bug. If there are any debugging steps you would like me to do let me know what and how and I'll be happy to assist. Thank you ** Attachment added: "kern.log" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1769376/+attachment/5136781/+files/kern.log -- 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/1769376 Title: NMI watchdog: Watchdog detected hard LOCKUP on cpu x Status in linux package in Ubuntu: Incomplete Bug description: Machine: ASUS ROG GL753VE Laptop Clean install of Ubuntu 18.04 LTS (I've reinstalled several times and get same error). This is the error: NMI watchdog: Watchdog detected hard LOCKUP on cpu x (where x is some cpu #) I am also seeing the following errors at random: watchdog: BUG: soft lockup - CPU#X stuck for 23s! [kworker/3:0:29] watchdog: BUG: soft lockup - CPU#X stuck for 23s! [systemd-udevd:335] watchdog: BUG: soft lockup - CPU#X stuck for 23s! [systemd-udevd:575] Unfortunately due to the nature of this bug, I cannot gather any logs or report using the Terminal. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1769376/+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
