I have a similar HP dc5800 machine. Booting from 4.15 kernel after upgrade to Ubuntu 18.04 results in very quick kernel crash (less than 1 second), as does booting from the Ubuntu 18.04 "desktop" install DVD.
In both cases booting with "acpi=off noapic" added to the kernel boot parameters works fine, except that the machine does not power down after "/sbin/shutdown -P". Oddly enough this machine worked fine with the 4.4 kernels from Ubuntu 16.04, so this might be a regression bug in the kernel? -- 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/1772038 Title: ubuntu/xubuntu 18.04 kernel crash during install. Status in linux package in Ubuntu: Confirmed Status in linux source package in Bionic: Confirmed Bug description: I've been trying to install ubuntu 18.04, but the system crashes with a kernel panic and thus won't run. So how do I report this bug? The system passes all memory tests and runs 17.10 with no problems, but will not run 18.04 There is very little data gathering that I can do, as the system will not boot, not even into text mode. PS. This back door way of creating a bug report is very poor when dealing with systems that don't run. The steps required to reproduce this bug are: 1) download Ubuntu and/or Xubuntu 2) burn the installation image to a dvd 3) insert dvd into target computer 4) power on target computer 5) wait a couple of seconds 6) Stare at frozen screen saying Kernel panic 7) Go back to step 1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1772038/+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