Part of the screen out of view

[Gustav]

Hi all,

I'm having a strange problem in Mandriva 2007.0 and I've been trying lots of things to solve it but I couldn't find any solution.
I have a Trident CyberBlade XP (working fine) with a Samsung SyncMaster 760B (1280x1024). The screen IS working with the correct resolution, but part of it is out of range. The monitor has no buttons to adjust its position, it has an "Auto Adjustment" feature and can be controled using MagicTune for windows (no linux version).
I installed a program called ddccontrol (but it doesn't recognize the monitor) and also tried to edit xorg.conf (modifying ModeLine), but anything changed.

This is my xorg.conf:

Section "Monitor"
    Identifier "monitor1"
    VendorName "Plug'n Play"
    ModelName "SyncMaster"
    HorizSync 30-81
    VertRefresh 56-75

    # Monitor preferred modeline (60.0 Hz vsync, 64.0 kHz hsync, ratio 5/4)
    ModeLine "1280x1024" 108 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync

    # TV fullscreen mode or DVD fullscreen output.
    # 768x576 @ 79 Hz, 50 kHz hsync
    ModeLine "768x576"     50.00  768  832  846 1000   576  590  595  630

    # 768x576 @ 100 Hz, 61.6 kHz hsync
    ModeLine "768x576"     63.07  768  800  960 1024   576  578  590  616
EndSection

Section "Device"
    Identifier "device1"
    VendorName "Trident Microsystems"
    BoardName "Trident CyberBlade (generic)"
    Driver "trident"
    Option "DPMS"
EndSection

Section "Screen"
    Identifier "screen1"
    Device "device1"
    Monitor "monitor1"
    DefaultColorDepth 24

    Subsection "Display"
        Depth 8
        Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "640x480" "480x360" "320x240"
    EndSubsection

    Subsection "Display"
        Depth 15
        Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "640x480" "480x360" "320x240"
    EndSubsection

    Subsection "Display"
        Depth 16
        Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "640x480" "480x360" "320x240"
    EndSubsection

    Subsection "Display"
        Depth 24
        Modes "1280x1024" "1152x864" "1024x768" "832x624" "800x600" "640x480" "480x360" "320x240"
    EndSubsection
EndSection

As I've seen, this is a common problem with all Samsung's SyncMaster screens. I would really appreciate any help,
thaks

[aliov]

Can you go to the out of view part with the keyboard arrow keys ?

[Gustav]

No aliov, I tried and there's no way to adjust the screen using the keyboard. Part of the screen is out of range (moved to the right) leaving a black "column" on the left side of the monitor.
I'm sure I need to correct the xorg.conf file. I once used the xorg.conf code of a similar monitor and I was able to change the screen position (but I couldn't centre it).

Thanks, I'm still searching for solutions...

[devils casper]

Section "Monitor"
Identifier "monitor1"
VendorName "Plug'n Play"
ModelName "SyncMaster"
HorizSync 30-81
VertRefresh 56-75

check Monitor's Manual. are HorizSync and VertRefresh rates correct?

[Gustav]

Yes, I checked the manual and both HorizSync and VertRefresh values are ok.

I tried with the xorg.conf of a SyncMaster 740N, that has the same HorizSync and VertRefresh rates. The only line that changed was the "ModeLine" and the screen's position changed leaving a black column on the right part of the monitor... I can't centre it.

[Gustav]

I finally solved this problem after installing Mandriva 2008. For those using a SyncMaster 760B, just configure the screen as a Flat Panel 1280x1024.
Hope this helps