Multiple X servers and blank tty consoles

As soon as i start another X server on tty8, all of the remaining text consoles become completely blank.
Is this a bug or is this the expected behaviour?
The only way for me to get text consoles back is to reboot the system.
nvidia-bug-report.log.tar.gz (2.32 MB)

I used to use two X servers on the same videocard previously. Problems with text consoles, as far as I know, don’t depend on the number of servers. Only on incompartitibily between nvidia and framebuffer kernel modules.
Are your consoles in text mode or framebuffer in your case? You can either use fbset command to check that or look at /proc/fb file.
Any error messages in dmesg about your video?

They’re Plain text mode consoles.
The X server on tty7 (:0) runs on a twinview configuration.
The X server on tty8 (:1) is dual head with :1.0 and :1.1 indipendent screens, like this:

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" LeftOf "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"

PS: why my attached nvidia-bug-report is being scanned for 5 hours and still (!?!)

kokoko3k, Please attach nvidia bug report and provide reproduction steps in detail?

I already attached the bugreport, the site still say:
“[SCANNING… PLEASE WAIT] nvidia-bug-report.log.tar.gz”

And the steps to reproduce are:

  1. have two monitor attached
  2. start a DE on tty7 with twinview enabled
  3. start a second Xserver with two different screen as shown in post #3
  4. play a game on the second Xserver
  5. see that tty are black.