I've looked through almost all of the suggested questions as well as searched on the error messages in the attached logs and can't find anything applicable - at least as far as I understand things.
I'm running 14.04 LTS upgraded from 12.04 LTS. I recently installed ubuntu Tweak (at the same time I had to reinstall Software Center because it suddenly appeared as "not installed) and did a housecleaning. I also did an update that required a restart and now am unable to reach the login screen.
I've tried everything in recovery mode. I am unable to start in the failsafex (graphics safe mode), receiving a message as follows:
X: cannot stat /etc/X11/X (No such file or directory), aborting
I've tried hitting Esc to disable the splash screen and things appear to be going fine until something reads "FAIL", but the screen flashes by so fast I don't know what it is and don't know how to slow it down or interrupt it. Several more processes load and then it stops and the screen then only shows:
Initct1: Event failed
and freezes there.
I'm running an ASUS laptop with an AMD64 chipset with 4GB of RAM and a 1 GB HDD dual booted with Windows 7 (into which I can boot, but very seldom use because of update problems I haven't been able to solve).
I wanted to attach the following files: /var/log/boot.log and /var/log/dmesg but I don't have "Manage Attachments" button to do so. So, I'll just add the last several lines of each file.
* Starting CPU interrupts balancing daemon[154G[ OK ] * Starting configure virtual network devices[154G[ OK ] * Starting cups-browsed - Bonjour remote printer browsing daemon[154G[ OK ] * Stopping Restore Sound Card State[154G[ OK ] * Starting crash report submission daemon[154G[ OK ] * Starting automatic crash report generation[154G[ OK ] * Starting SMB/CIFS File and Active Directory Server[154G[[31mfail[39;49m]
[ 21.351655] USB Video Class driver (1.1.1) [ 21.781351] init: failsafe main process (664) killed by TERM signal [ 21.914152] cfg80211: World regulatory domain updated: [ 21.914158] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 21.914160] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 21.914162] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 21.914165] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 21.914167] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 21.914169] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 23.325998] init: Failed to spawn hybrid-gfx main process: unable to execute: No such file or directory