The right side of the display is overwritten with black.

[Hisashi Okeya]

The display is in a state where 80 dots from 1600 to 1680 on the right side are overwritten with black.

OS Ver
  sparkylinux-6.6-x86_64-lxqt

PC
  SONY VAIO VGC-JS90S
　Main unit/dedicated display 20.1 inch wide integrated type
　Resolution: WSXGA+ 1680 x 1050 dots
　Intel Graphics Media Accelerator X4500HD (built into chipset)

1.As a result of displaying with the following settings, the following phenomenon occurs.

　Phenomenon
　　[1600x1050_60.00] is normal operation and right side 80 dot black
　　[1680x1050_60.00] & [1680x1050_60.00] are overwritten with black for 80 dots on the right

　Settings
   ------------------------------------------------------------------------------------------------
   Section "Monitor"
       Identifier "LVDS-1"
       Modeline "1600x1050_60.00"  139.83  1600 1704 1872 2144  1050 1051 1054 1087  -HSync +Vsync
       Modeline "1680x1050_60.00"  147.14  1680 1784 1968 2256  1050 1051 1054 1087  -HSync +Vsync
       Modeline "1680x1050_59.00"  144.55  1680 1784 1968 2256  1050 1051 1054 1086  -HSync +Vsync
       Option "PreferredMode" "1600x1050_60.00"
   EndSection
   
   Section "Screen"
       Identifier "Screen0"
       Monitor "LVDS-1"
       DefaultDepth 24
       SubSection "Display"
           Modes "1600x1050_60.00"
       EndSubSection
   EndSection
   -------------------------------------------------------------------------------------------------

2.[/var/log/Xorg.0.log] reports the following:
　[   267.320] (II) intel(0): Not using mode "1680x1050_60.00" (exceeds panel dimensions)

3.Of course, Windows Vista displays in intel1680x1050 mode.

My guess is
  The device settings for the panel (embedded LCD) are not normal and are displayed as "exceeds panel dimensions".

I tried various xrandr commands, but they did not work.
Is it possible to change the panel device driver?