Hipolit Kwass, could you please boot into the computer with the offending hardware, use the WORKAROUND acpi=off to boot into the OS, and execute at a terminal: apport-collect 1243431
** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Changed in: linux (Ubuntu) Importance: High => Low -- 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/1243431 Title: Ubuntu 13.10 64bit installer won't boot unless acpi=off on Dell Optiplex 745 Status in “linux” package in Ubuntu: Incomplete Bug description: I am booting live cd of Ubuntu 13.10 Desktop 64bit but it ends with kernel panic because of some issues with acpi. I tried the following: - when I provide parameter acpi=off it boots ok. - when I provide acpi=ht (or no parameter) it generates kernel panic (see the screenshot in attachment). Moreover I can run 32bit version of Mint 15 with no acpi issues which suggests that only 64bit version is affected. There is attachment with two subdirectories: one contains data from Ubuntu 13.10 64 bits livecd taken with acpi=off and the second taken from 32bit version Mint 15. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1243431/+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