Bug 7551 - Xconfigurator doesn't know Cyrix MediaGX can't do 1280x1024
Xconfigurator doesn't know Cyrix MediaGX can't do 1280x1024
Product: Red Hat Linux
Classification: Retired
Component: Xconfigurator (Show other bugs)
i386 Linux
medium Severity medium
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Assigned To: Trond Eivind Glomsrxd
Depends On:
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Reported: 1999-12-03 11:24 EST by Telsa Gwynne
Modified: 2008-05-01 11:37 EDT (History)
1 user (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2001-02-09 17:44:49 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Telsa Gwynne 1999-12-03 11:24:36 EST
Running 6.1 on a machine with a Cyrix MediaGX chip and 64megs RAM.
Had an old monitor that X worked with. Got a new one:a Sony CPD-110EST.

Ran Xconfigurator and it told me it had found settings for it, but the
ones it suggested were 1280x1024x8bit. Although the monitor might cope,
I'm told the MediaGX has a limit of 1024x768.

Called in friendly neighbourhood hacker (every home should have one) to
sort it out. I'm now using an XF86Config with
this in it:

# 1024x768 @ 76 Hz, 62.5 kHz hsync
# Modeline "1024x768"    85    1024 1032 1152 1360   768  784  787  823
Modeline "1024x768"    85    1024 1040 1152 1360   768  784  787  823

This is working fine.

So far :)
Comment 1 Trond Eivind Glomsrxd 2000-07-11 14:15:26 EDT
Does this work in Red Hat Linux 6.2?
Comment 2 Trond Eivind Glomsrxd 2000-07-26 10:20:15 EDT
Xconfigurator doesn't have a way to specify minimum/maximum resolution (also a
problem with LCD displays) - intend to fix this with a planned rewrite.
Comment 3 Trond Eivind Glomsrxd 2000-07-26 10:20:43 EDT
Oh - and of course, the workaround is to select the resoultion you know your
computer can handle.
Comment 4 Telsa Gwynne 2000-08-02 08:21:54 EDT
It does not work any better in 6.2.

The workaround only works if you are prepared to edit the
XF86Config file by hand. If I select combinations of resolutions
and depths in Xconfigurator, it claims to accept them and then
writes a non-working XF86Config.
Comment 5 Brock Organ 2001-02-09 17:44:11 EST
Here is an update on the issue from Telsa, the reporter:

Date: Fri, 9 Feb 2001 08:44:37
From: Telsa Gwynne
Subject: Cyrix MediaGX text-mode upgrade: step right

It's not all doom and gloom: Xconfigurator --preferxf3 gets
Cyrix right. Woo-hoo! Thank you! (Please someone with privs,
#7551 so that everyone knows this is now working: unless you
see the other beta-team-only bug, you don't know that
was fixed for 7.0, and I keep meeting people with Cyrixes and
working X because they don't know there's a new

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