Hi there,


I recently upgraded my mythbuntu box with a new graphic card (GeForce GT220) and a new monitor (SONY Plasma 50 inch with 1368x768 resolution, connected via DVI).

With every third restart the screen resolution will not be identified, thus booting into failsafe-mode. With every other third restart the screen has pixel mess on the top of about 5% of the screen. With the remaining other third restarts everything works as expected.

Updated to latest status of mythbuntu (as of today). The nvidia module is always loaded. The system uses the following /etc/X11/xorg.conf:

Code:
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 1.0  (buildd@yellow)  Fri Apr  9 11:51:21 UTC 2010

# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:  version 1.0  (buildmeister@builder58)  Thu Apr 22 20:35:23 PDT 2010

Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
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"
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Sony FWD-50PX3"
    HorizSync       13.0 - 70.0
    VertRefresh     48.0 - 62.0
    Option         "DPMS"
    Modeline       "1360x768@60" 84.50 1360 1392 1712 1744 768 783 791 807
    Option         "PreferredMode" "1360x768@60"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GT 220"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    # Option         "metamodes" "nvidia-auto-select +0+0; 1360x768_60 +0+0"
    SubSection     "Display"
        Depth       24
        Modes      "1360x768"
    EndSubSection
EndSection
As you can see I have added a ModeLine for the required resolution 1360x768@60 and disabled the metamode-option generated by nvidia-settings.

No idea why two of three reboots result in a failed X11.

Can you please advise/point me to links/guess a solution?

Thanks, -MN