Solve the Problem of mischanging the permissions of the owner under/var to solve the problem of mischanging the permissions of the owner under/var, as a result, The System prompts The System is running in low-graphics mode to solve this problem. This is really a zombie. I originally installed ecshop under/var/www, when changing the permission, I accidentally changed/var and all its subdirectories. oh, my lady gaga, I thought it was a problem with the graphics card driver! Fuck !. Solution: 1. prompt The System is running in low-graphics mode, click OK to enter The second interface 2. there are four options, select the last one, and then press ctrl + alt + f1 to enter terminal 3. enter the following three commands at a time: [css] sudo chown lightdm: lightdm-R/var/lib/lightdm sudo chown avahi-autoipd: avahi-autoipd-R/var/lib/avahi-autoipd sudo chown colord: colord-R/var/lib/colord 4. enter 2013.05.25By ACReaper to restart