Graham Leggett wrote:

> I have an RHEL5 machine which had a working X11 config attached to an
> old CRT monitor.
>
> The monitor has given up the ghost, so we tried to plug in an LG L1953T
> LCD display. Immediately we got the error "analog: out of range" on the
> monitor, which is not too much of a surprise, X in theory needs to be
> reconfigured.
>
> Googling showed that we needed to run the following:
>
> system-config-display --reconfig --noui
>
> Trouble, is, this doesn't autodetect the monitor, and despite the
> updated xorg.conf file, the error remains.
>
> It seems that RHEL5 is capable of autodetecting the monitor during
> initial system setup, but for the life of me I cannot find a way to redo
> the X configuration process after the fact?
>
> Is reconfiguring Xwindows this difficult or am I missing something
> really obvious?
>
> Does anyone know what command must be run to autodetect and set up X?

After some more Googling I found the raw autodetect feature of X, like this:

X -configure

The resulting xorg.conf file correctly detects the refresh rate, as follows:

     HorizSync   30.0 - 83.0
     VertRefresh 56.0 - 75.0

This matches the spec on the monitor.

The monitor still doesn't work - analog out of range remains.

The monitor works fine when plugged into a Mac (using the VGA analog
port). Are LG monitors compatible with Redhat Enterprise?

Anyone have any ideas?

Regards,
Graham
--

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