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Thread: Display exceeds screen dim. after NVidia update...

  1. #1
    Join Date
    Jul 2011
    Beans
    2

    Display exceeds screen dim. after NVidia update...

    Hello everyone!
    I am running a Ubuntu 12.04(LTS) installation, 64bit, with a GeForce GT240; the latter connected via HDMI to a Sony Bravia, 42'' TV.
    Recently, after an Nvidia driver update(on which I had dithered and delayed for quite a while) I've encountered a strange and irresolvable phenomenon: at the given resolution(1280x720 -- perfectly standard) the display overruns the monitor; in other words, the panels, taskbar and other features of the display go beyond the screen's edges, and are therefore "cut" in half(see enclosed photos). This has never happened, before!
    The present NVidia version is 304-current.
    Furthermore, removal of the driver, and using the default(Nouveau/built-in) one resolves the problem completely, although, naturally, this means I am not getting the full Hardware acceleration component of my card.
    What should I do?
    Where do you reckon the problem is?
    Yours most beholden,
    Thanks!
    Daniel
    Attaching xorg.conf:
    Code:
    Section "ServerLayout"
            Identifier     "X.org Configured"
            Screen      0  "Screen0" 0 0
            InputDevice    "Mouse0" "CorePointer"
            InputDevice    "Keyboard0" "CoreKeyboard"
    EndSection
    
    Section "Files"
            ModulePath   "/usr/lib/xorg/modules"
            FontPath     "/usr/share/fonts/X11/misc"
            FontPath     "/usr/share/fonts/X11/cyrillic"
            FontPath     "/usr/share/fonts/X11/100dpi/:unscaled"
            FontPath     "/usr/share/fonts/X11/75dpi/:unscaled"
            FontPath     "/usr/share/fonts/X11/Type1"
            FontPath     "/usr/share/fonts/X11/100dpi"
            FontPath     "/usr/share/fonts/X11/75dpi"
            FontPath     "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
            FontPath     "built-ins"
    EndSection
    
    Section "Module"
            Load  "glx"
    EndSection
    
    Section "InputDevice"
            Identifier  "Keyboard0"
            Driver      "kbd"
    EndSection
    
    Section "InputDevice"
            Identifier  "Mouse0"
            Driver      "mouse"
            Option      "Protocol" "auto"
            Option      "Device" "/dev/input/mice"
            Option      "ZAxisMapping" "4 5 6 7"
    EndSection
    Section "Monitor"
            Identifier   "Monitor0"
            VendorName   "Monitor Vendor"
            ModelName    "Monitor Model"
    EndSection
    
    Section "Device"
            ### Available Driver options are:-
            ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
            ### <string>: "String", <freq>: "<f> Hz/kHz/MHz",
            ### <percent>: "<f>%"
            ### [arg]: arg optional
            #Option     "SWcursor"                  # [<bool>]
            #Option     "kmsdev"                    # <str>
            #Option     "ShadowFB"                  # [<bool>]
            Identifier  "Card0"
            Driver      "nvidia"
            BusID       "PCI:1:0:0"
    EndSection
    
    Section "Screen"
            Identifier "Screen0"
            Device     "Card0"
            Monitor    "Monitor0"
            SubSection "Display"
                    Viewport   0 0
                    Depth     1
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     4
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     8
            EndSubSection
            SubSection "Display"
            Identifier  "Card0"
            Driver      "nvidia"
            BusID       "PCI:1:0:0"
    EndSection
    
    Section "Screen"
            Identifier "Screen0"
            Device     "Card0"
            Monitor    "Monitor0"
            SubSection "Display"
                    Viewport   0 0
                    Depth     1
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     4
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     8
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     15
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     16
            EndSubSection
            SubSection "Display"
                    Viewport   0 0
                    Depth     24
            EndSubSection
    EndSection
    Attached Images Attached Images

  2. #2
    Join Date
    Feb 2008
    Beans
    4,968
    Distro
    Xubuntu 16.04 Xenial Xerus

    Re: Display exceeds screen dim. after NVidia update...

    It might be possible to fix this with a menu setting in the TV.

  3. #3
    Join Date
    Feb 2009
    Location
    Dallas, TX
    Beans
    7,743
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Display exceeds screen dim. after NVidia update...

    Quote Originally Posted by gordintoronto View Post
    It might be possible to fix this with a menu setting in the TV.
    +1

    Hi danielakkerman.

    That look like Overscan. The best solution is to change your TV settings.

    In a Sony Bravia:
    Code:
    Menu/Home -> Settings/Options -> Screen
    Change that setting to either 'Full Pixel', 'Normal' or 'Full Scan'.

    Hope it helps. Let us know how it goes.
    Regards.

  4. #4
    Join Date
    Jul 2011
    Beans
    2

    Re: Display exceeds screen dim. after NVidia update...

    Guys, your suggestions worked fantastically!
    (Great step-by-step explanation, papibe!)
    You'll have to excuse my ignorance of such a simple solution(I really thought it was "it" for my setup, and that I would have to reinstall the whole thing from scratch).
    Question is, why do you suppose it happened, to begin with? Previously, my card would detect the TV's scan rate flawlessly, and it is only after the Nvidia upgrade that these issues surfaced.
    At any rate,
    I am immeasurably grateful,
    Thanks again!
    Daniel
    P.S.
    How do I mark this as solved?

  5. #5
    Join Date
    Feb 2009
    Location
    Dallas, TX
    Beans
    7,743
    Distro
    Ubuntu 16.04 Xenial Xerus

    Re: Display exceeds screen dim. after NVidia update...

    Glad you sorted it out

    It has nothing to do with the card, the machine, or even Ubuntu (or Windows if it were the case). Unfortunately it is how most, if not all, TVs are set by default. It seems to be a practice inherited from analog TV.

    Note that the setting you just changed applies only for the input you set it on. You are probably still seeing a overscan signal on your other inputs (DVD, etc.), and even on your regular TV signal. To get rid off it completely, you need to repeat the process for every input.

    Regards.

    P.S.: for 1080i TV signal the name is the same (Full Pixel), but for 720p the names are different: the overscan settings are called -1, and -2 and the overscan free is called 'Normal'.

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