Thread: can't log in: log screen loop

hello,

i've got big problem here , badly need help. don't know happened, can't log computer anymore. or more precise, keep logging in, , there usual black screen usual start process messages, barely second, , it's login page.

can't log in guest account. on other hand, possible log in using text modus ctrl+alt+f1, there no problems use live usb stick i'm doing now.

but, , may relevant:

* prior this, kept getting error message "permission denied" in file manager pcmanfm, has home folder start folder. "file system" entry had disappeared locations bar on left side.

* in live usb environment, can access data on home folder--if open folders root.

maybe it's problem permissions? or x-server crash? lightdm problem? don't know.

use xubuntu 12.04, 64bit (and have gnome installed). graphic card:

code:

lspci -nnk | grep -i vga -a2  01:00.0 vga compatible controller [0300]: nvidia corporation device [10de:1055] (rev a1)      subsystem: sony corporation device [104d:908b]      kernel driver in use: nouveau

does have ideas here? how solve problem? thank in advance.

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