Edit your XF86config-4 file, look for lines like these (see below). Insert the
correct frequency settings for your monitor, and the resolutions you want.
BTW, if you specify more than one resolution, you can switch them on-the-run by
pressing Ctrl+Alt+'+' or Ctrl+Alt+'-'.
See also man XF86Config(x).
# **********************************************************************
# Monitor section
# **********************************************************************
# Any number of monitor sections may be present
Section "Monitor"
Identifier "Scott 7720"
# HorizSync is in kHz unless units are specified.
# HorizSync may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.
HorizSync 30-70
# HorizSync 30-64 # multisync
# HorizSync 31.5, 35.2 # multiple fixed sync frequencies
# HorizSync 15-25, 30-50 # multiple ranges of sync frequencies
# VertRefresh is in Hz unless units are specified.
# VertRefresh may be a comma separated list of discrete values, or a
# comma separated list of ranges of values.
# NOTE: THE VALUES HERE ARE EXAMPLES ONLY. REFER TO YOUR MONITOR'S
# USER MANUAL FOR THE CORRECT NUMBERS.
VertRefresh 50-150
EndSection
( ... )
# **********************************************************************
# Screen sections
# **********************************************************************
# Any number of screen sections may be present. Each describes
# the configuration of a single screen. A single specific screen section
# may be specified from the X server command line with the "-screen"
# option.
Section "Screen"
Identifier "Screen 1"
Device "ATI Rage 128"
Monitor "Scott 7720"
# DefaultDepth 8
DefaultDepth 24
Subsection "Display"
Depth 24
Modes "1024x768" "800x600" "640x480"
ViewPort 0 0
Virtual 640 480
EndSubsection
EndSection
Regards,
--
Joachim Fahnenmüller
Lehrer für Mathematik und Physik
Herder-Gymnasium
Kattowitzer Straße 52
51065 Köln
