Alt X screen Sessions are blank

Legolas327 · 12-22-2009, 10:29 PM

When I try to exit to an other screen session I just get blank screens. ALT + F1-F6 show up as blank screens.

ALT+F7 brings me back but I can not shell into an other session which is really important at times.

I don't believe it is my xorg.conf but not sure what to check?

Checking other posts I found one in 2005 that asked about getty. I have on other comp and ran a "ps aux |grep getty" and the working one showed /sbin/getty for tty 1-6.

The computer I am having trouble with did not have any instance of getty running. What do I need to do now?

Help pls.

exvor · 12-22-2009, 10:46 PM

When your in X you have to use CTRL-ALT-F1 though F6

gregorian · 12-22-2009, 11:27 PM

I'm not sure but Alt X are generally ignored if Ctrl Alt X work, but the OP is getting blank screens. I remember reading something about /etc/ttys. Could you look into that?

Legolas327 · 12-22-2009, 11:32 PM

Quote:

When your in X you have to use CTRL-ALT-F1 though F6

Yes sorry for not typing that correctly, but the problem remains.

Added information: In reading more information I compared my two computers. One working correctly and the other not.

The corectly working computer shows that all tty's are set to start/running when I run:

$ initctl list |grep tty

however the none working comp shows:

$initctl list |grep tty
tty4 stop/waiting

for all 6 tty's

Does anyone know where to find out why the tty's are not starting their process?

I think I should point out that I am running Ubuntu Karmic 9.10 on X64 platform with duel screens. I thought perhaps my xorg.conf may be the culprit but don't think so now.

exvor · 12-23-2009, 07:13 PM

I found this possible solution.

Quote:

Switching the console to a framebuffer mode, with, e.g.

vga=791

in grub's menu.lst works around this for me, in that I can see my TTYs again. As soon as xorg starts with the nvidia restricted drivers, a text mode TTY is borked though; so not a fix.

I found this in an ubuntu bug report here https://bugs.launchpad.net/ubuntu/+s...ux/+bug/282068

Legolas327 · 12-24-2009, 12:27 AM

After comparing an searching and comparing I finally removed my duel monitor xorg.conf file and used the base one created by automatically and now know that something in my duel monitor xorg.conf file is the issue. When I use a very basic one with out both screens everything works just fine. When I use my duel monitor version it works great but causes the issues I am having. Now having discovered this I am researching what is not liked about the duel monitor xorg.conf file since I have used duel monitors for years with Ubuntu and Fedora. I just have to figure out what I did different this time around.

Ok I used the nvidia-settings to build my xorg.conf file and have the same issues. My Duel monitors work just fine.
However; it wont let me use my other X sessions. I have not had this problem in the past so kind of lost. Here is the xorg.conf file

Code:

:~$ cat /etc/X11/xorg.conf
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildd@crested)  Sun Feb  1 20:25:37 UTC 2009

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    Screen      1  "Screen1" RightOf "Screen0"
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
EndSection

Section "Module"
    Load           "dbe"
    Load           "extmod"
    Load           "type1"
    Load           "freetype"
    Load           "glx"
EndSection

Section "ServerFlags"
    Option         "Xinerama" "0"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "WDE LCM-22w2"
    HorizSync       30.0 - 82.0
    VertRefresh     56.0 - 67.0
    Option         "DPMS"
EndSection

Section "Monitor"
    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor1"
    VendorName     "Unknown"
    ModelName      "SHARP HDMI"
    HorizSync       15.0 - 75.0
    VertRefresh     55.0 - 76.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8800 GTX"
    BusID          "PCI:2:0:0"
    Screen          0
EndSection

Section "Device"
    Identifier     "Device1"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 8800 GTX"
    BusID          "PCI:2:0:0"
    Screen          1
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "DFP-1: nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Section "Screen"
    Identifier     "Screen1"
    Device         "Device1"
    Monitor        "Monitor1"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "metamodes" "DFP-0: nvidia-auto-select +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Does anyone see a setting that is keeping the X-Sessions from working? Maybe I need to set some resolutions for a text only screen or something?