logging in then going to power-save-mode

[inhee park]

Hello,

I am running Ubuntu 12.04 LTS  with kernel 3.2.0-23-generic (x86_64).
>From the fresh install, no problem logging into graphic mode.

After trying to connecting/disconnecting KVM switches (both DVI and VGA),
whenever I tried to login (from login-screen; lightdm), immediately my
monitor said "going to sleep (HP monitor)/power-safe-mode (Dell P2312H
monitor)" (I tested with two different monitors), then kicked me out
back to the login-screen.

I tried to turn off DPMS upon reboot, but no luck.
Nvidia configuration looks okay from /var/log/xconf.0.log.

Could you give me any suggestion?

Thank you very much,
_________
inhee park