I have a strange problem and after googling around I haven't found a solution...
When I boot to the desktop manager (kdm in my case) I am able to use tty consoles by pressing Ctrl+Alt+Fn. If I next log into XFCE I am still able to use them and everything is fine.
But if I log into Gnome the consoles are not available anymore. Pressing Ctrl+Alt+F2 results in black screen and my monitor going sleep. If I now log out of gnome back to kdm the problem persists. It also persists after X server restart (Ctrl+Alt+Backspace) and whatever I do I am not able to use text consoles until the next reboot
Some additional info:
I am F17, but this problem occurred in F16 too.
Gettys are still running:
# systemctl status firstname.lastname@example.org
email@example.com - Getty on tty2
Loaded: loaded (/usr/lib/systemd/system/getty@.service; enabled)
Active: active (running) since Thu, 12 Jul 2012 14:04:17 +0200; 13min ago
Main PID: 1266 (agetty)
└ 1266 /sbin/agetty --noclear tty2 38400
I am using proprietary nvidia X drivers. I had no problems with them before.
My kernel parameters look like this
kernel /vmlinuz-3.4.4-5.fc17.i686.PAE ro root=/dev/sda7 selinux=0 vga=0x31B SYSFONT=latarcyrheb-sun16 LANG=en_US.UTF-8 KEYTABLE=pl2 pcie_aspm=force nomodeset
AFAIR using Gdm instead of Kdm was already causing problems before even running the "gnome proper".
e does not help.