Behaviour here is a little bit different: 3.5.0-20 seems to boot and does display the log-on screen. However, the Ubuntu "drums" do not sound, and though the mouse pointer moves there is no reaction whatsoever on pressing a keyboard key or clicking a mouse button. I need to switch off the computer. Going back to 3.5.0-19 worked on second try. Could it be that something is hanging up when trying to play the drums sound? It's the first thing that does not work as usual.
I compared my dmesg logs from a failed start and a successful 3.5.0-19 start. The first 860 or so lines a pretty much identical (after removing time stamps) but then there are suspicious messages such as * init: failsafe main process (794) killed by TERM signal * Could not create debugfs 'i915_reg_rw' directory * BUG: unable to handle kernel paging request at... I am attaching the part of the file staring from the differing messages. ** Attachment added: "dmesg file from unsuccessful boot" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1087622/+attachment/3455283/+files/dmesg.3.5.0-20.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1087622 Title: Linux kernel 3.5.0-20 won't boot [unable to handle kernel paging request at f91fe4fc in trace_event_raw_init+0xb/0x20] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1087622/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
