On another test, using vanilla Ubuntu mainline 5.14.14 on a guest VBOX VM runs ok for about half a day then crashes to black screen. This has happened 4x!
Replacing the vanilla Ubuntu mainline 5.14.14 with a custom build of 5.14.14 using point 1 above (see comment 43) has so far worked for 3 days and is still working. Having that configuration is dangerous in production settings! I can't stress it enough! If you use Ubuntu Mainline kernels in production settings, then... ****DO NOT USE UBUNTU MAINLINE 5.14.X KERNELS.**** Use Ubuntu mainline 5.13.x or rebuild the 5.14.x kernels from kernel.org and disable "CONFIG_UBSAN_TRAP" in the kernel config. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1942684 Title: Kernel 5.14.X / 5.13.14 fails to boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1942684/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
