Addendum: Booting the previous 3.13.0-6-generic will continue to boot but shows the "firmwre not responding" error briefly. The update that triggered the regression was:
Start-Date: 2014-02-06 11:56:33 Commandline: apt-get -y upgrade Upgrade: libdpkg-perl:i386 (1.17.5ubuntu2, 1.17.5ubuntu3), libfontembed1:i386 (1.0.44-1, 1.0.44-2), abiword-common:i386 (3.0.0-2ubuntu1, 3.0.0-4), ubuntu-standard:i386 (1.315, 1.316), dpkg:i386 (1.17.5ubuntu2, 1.17.5ubuntu3), libcupsfilters1:i386 (1.0.44-1, 1.0.44-2), libabiword-3.0:i386 (3.0.0-2ubuntu1, 3.0.0-4), libgirepository-1.0-1:i386 (1.39.3-0ubuntu1, 1.39.3-0ubuntu2), dpkg-dev:i386 (1.17.5ubuntu2, 1.17.5ubuntu3), libevview3-3:i386 (3.10.3-0ubuntu2, 3.10.3-0ubuntu3), gir1.2-freedesktop:i386 (1.39.3-0ubuntu1, 1.39.3-0ubuntu2), xserver-common:i386 (1.15.0-1ubuntu1, 1.15.0-1ubuntu2), cups-filters:i386 (1.0.44-1, 1.0.44-2), linux-libc-dev:i386 (3.13.0-7.25, 3.13.0-7.26), xserver-xorg-video-intel:i386 (2.99.907-0ubuntu2, 2.99.909-0ubuntu2), evince-common:i386 (3.10.3-0ubuntu2, 3.10.3-0ubuntu3), abiword:i386 (3.0.0-2ubuntu1, 3.0.0-4), gir1.2-glib-2.0:i386 (1.39.3-0ubuntu1, 1.39.3-0ubuntu2), linux-image-extra-3.13.0-7-generic:i386 (3.13.0-7.25, 3.13.0-7.26), linux-image-3.13.0-7-generic:i386 (3.13.0-7.25, 3.13.0-7.26), dh-python:i386 (1.20131021-1ubuntu8, 1.20140128-1ubuntu1), ubuntu-minimal:i386 (1.315, 1.316), evince:i386 (3.10.3-0ubuntu2, 3.10.3-0ubuntu3), libevdocument3-4:i386 (3.10.3-0ubuntu2, 3.10.3-0ubuntu3), cups-filters-core-drivers:i386 (1.0.44-1, 1.0.44-2) End-Date: 2014-02-06 11:59:37 During upgrade this warning appeared twice: dkms: WARNING: Linux headers are missing, which may explain the above failures. please install the linux-headers-3.13.0-7-generic package to fix this. Even though there were no further failures in the log I installed linux- headers-3.13.0-7-generic manually afterwards. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1272720 Title: sometimes boot fails Status in “libpciaccess” package in Ubuntu: New Status in “xorg-server” package in Ubuntu: New Bug description: Probably not an Xorg problem: Lubuntu Trusty Linux xxxxxx 3.13.0-5-generic #20-Ubuntu SMP Mon Jan 20 19:58:23 UTC 2014 i686 athlon i686 GNU/Linux CPU: dual core turion 1) sometimes i have to start lightdm manually 2) sometimes a big freeze during boot, even before attempting loading X . (reboot needed) 3) sometimes kernel complains about CPU-firmware missing. 4) sometimes b43 wlan hardware not detected Sorry I can't be more clear about this. Half of the times it is booting perfectly. It feels like a racecondition somewhere ( module? / kernel? ). Since this bug report was automagically generated by apport I hope you guys can make any sense of it. ProblemType: Crash DistroRelease: Ubuntu 14.04 Package: xserver-xorg-core 2:1.14.5-1ubuntu2 ProcVersionSignature: Ubuntu 3.13.0-5.20-generic 3.13.0 Uname: Linux 3.13.0-5-generic i686 ApportVersion: 2.13.1-0ubuntu2 Architecture: i386 CrashCounter: 1 Date: Sat Jan 25 18:03:23 2014 ExecutablePath: /usr/bin/Xorg InstallationDate: Installed on 2014-01-04 (21 days ago) InstallationMedia: Lubuntu 14.04 "Trusty Tahr" - Alpha i386 (20140102) ProcCmdline: /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch ProcEnviron: Signal: 6 SourcePackage: xorg-server UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libpciaccess/+bug/1272720/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp