Sometimes my Unity session crashes just like that - no window decorations, no panel, but whatever was going on in the background continues, like music playback. Problem is though it cannot be restarted, since the option to kill the X server has been removed from 14.04.
I tried to bind the "sudo service lightdm restart" to a shortcut, to no avail. I also tried to restart Unity by typing "unity", "unity --replace", I tried also "compiz --replace" in the TTY session, nothing worked.
My hardware:
System: Kernel: 3.13.0-39-generic x86_64 (64 bit)
Desktop: Gnome Distro: Ubuntu 14.04 trusty
Machine: System: TOSHIBA (portable) product: Satellite L650 version: PSK1EE-00Y007SK
Mobo: TOSHIBA model: Portable PC Bios: INSYDE version: 2.40 date: 11/09/2011
CPU: Dual core Intel Core i3 CPU M 330 (-HT-MCP-) cache: 3072 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx)
Clock Speeds: 1: 933.00 MHz 2: 933.00 MHz 3: 1999.00 MHz 4: 2133.00 MHz
Graphics: Card: Intel Core Processor Integrated Graphics Controller
X.Org: 1.15.1 drivers: intel (unloaded: fbdev,vesa) Resolution: [email protected]
GLX Renderer: Mesa DRI Intel Ironlake Mobile GLX Version: 2.1 Mesa 10.2.2
Audio: Card: Intel 5 Series/3400 Series High Definition Audio driver: snd_hda_intel Sound: ALSA ver: k3.13.0-39-generic
Drives: HDD Total Size: 1500.3GB (35.3% used) 1: id: /dev/sda model: Hitachi_HTS54505 size: 500.1GB
2: USB id: /dev/sdb model: CH11 size: 1000.2GB
Partition: ID: / size: 46G used: 9.2G (22%) fs: ext4 ID: /home size: 409G used: 106G (28%) fs: ext4
ID: swap-1 size: 4.09GB used: 0.01GB (0%) fs: swap
RAID: No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors: System Temperatures: cpu: 53.0C mobo: N/A
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 228 Uptime: 11:52 Memory: 1642.5/3753.0MB Client: Shell (bash) inxi: 1.9.17
For console use
CTRL+ALT+F1
(back to GUI useCTRL+ALT+F7
)Did you use Compiz Config with extra plugins or effects?
If yes, try this:
dconf reset -f /org/compiz
(this will reset your Compiz settings)and this:
setsid unity
(it's creates a session and sets the process group ID)Compiz Config can mess up, I don't know why, perhaps integrated graphic cards(?) I had those problems too, I remember that only one cure for that kind of problem is reset compiz settings and configure them again with caution.