Can you follow the "Boot options" instructions on the following wiki to enable additional output on boot:
https://wiki.ubuntu.com/DebuggingKernelBoot As mentioned on the wiki, it would be great if you can attach a log file which may have captured any messages you see. If you are unable to capture a log file, a digital photo will work just as well. As a last resort you can even copy messages down by hand. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-firmware in Ubuntu. https://bugs.launchpad.net/bugs/1250321 Title: Ubuntu 13.10 + 14.04 Catastrophic Random Kernel Crashes on Boot with ASUS Sabertooth 990FX Status in “linux-firmware” package in Ubuntu: Confirmed Bug description: System Specs: ASUS Sabertooth 990FX (with the latest BIOS) AMD FX-8120 AMD Radeon HD 7950 240GB Seagate SSD (20GiB / partition) 2TB WD HDD (/home) I have installed Ubuntu 14.04 three times and each met the same fate. The first time you boot into the system after installing it, it works fine. However, after you install your usual programs like Steam, Skype, smplayer, etc. and reboot the system will fail on such a grand catastrophic scale that you can't even boot into recovery mode since that will begin spamming error messages quickly as well. It isn't related to the kernel because I used the same kernel in Ubuntu 13.04. I also had the same problems with Ubuntu 13.10 (I'm not sure if that still applies but I will soon find out). Meanwhile, Ubuntu 13.04 with kernel 3.12 works perfectly. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1250321/+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
