system-config-display

[daniel.robert at acm.org (Danny Robert)]

Is the system truly hanging, or are you just losing access to your
graphics card? (is the machine still ping-able, etc.)

If it helps, I didn't have any luck with X on an LCD until had my sync
rates in-line with what my monitor's manual reported.  For me (in my
/etc/X11/xorg.conf file):
-------------------
Section "Monitor"

# 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  30-64         # 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.

        Identifier   "AGNeovo F-419"
        HorizSync    24.0 - 80.0
        VertRefresh  50.0 - 75.0
        Option      "DPMS" "true"
EndSection
-------------------

Unfortunately, I've never used Fedora's system-config-display command, so
I'm of no help there.

Good luck,
-Danny Robert

On Tue, January 23, 2007 7:00 pm, Daniel Feenberg wrote:
>
> The last couple of times we have tried to install Fedora 6 we have been
> unable to make X-windows work. In all cases
>
>     system-config-display
>
> hangs with the (LCD) monitor displaying a message "Input not supported"
> that is self generated, not from the computer. An hour on Google generates
> the intelligence that LCD monitors aren't as fast as CRTs, and the
> defaults for X are too fast. I haven't been able to glean any usefull
> information on what to do about the problem, though. Among other
> experiments we did try:
>
>    system-config-display --set-hsync=40
>
> and got as far as a display of a mouse pointer, but the system was hung. A
> similar result happened with Ubuntu. These are servers, and no great
> performance is required - VESA 800x600 would be fine. The video cards are
> older PCI cards, but they appear to be correctly recognized.
>
> We have been installing Linux on computers since the Kernel was at .92 and
> never had so much trouble.
>
>
>
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