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Bug 14062 - Iiyama monitor incorectly probed
Iiyama monitor incorectly probed
Product: Red Hat Linux
Classification: Retired
Component: anaconda (Show other bugs)
i386 Linux
high Severity medium
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Assigned To: Matt Wilson
Depends On:
  Show dependency treegraph
Reported: 2000-07-16 11:46 EDT by Stelian Pop
Modified: 2008-05-01 11:37 EDT (History)
0 users

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2000-08-18 14:59:03 EDT
Type: ---
Regression: ---
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Documentation: ---
Verified Versions:
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
output of ddc probe on a Voodoo 3 AGP (2.94 KB, text/plain)
2000-07-18 17:22 EDT, Stelian Pop
no flags Details
ddcprobe output (543 bytes, text/plain)
2000-08-18 15:36 EDT, Stelian Pop
no flags Details

  None (edit)
Description Stelian Pop 2000-07-16 11:46:37 EDT
My Iiyama vision master 403 is incorrectly DDC probed by the installer:
(instead of 27-96 / 50-160 correct values).
Comment 1 Matt Wilson 2000-07-17 15:36:19 EDT
What is the 7 character ID for the monitor (it would say something like "DDC
probed monitor IVM1234")
Comment 2 Stelian Pop 2000-07-18 05:15:52 EDT
Where can I found this information ? (is there some file to look into, like an
or a program to launch).

Or do I need to go through the whole install process once again?
Comment 3 Glen Foster 2000-07-18 16:37:08 EDT
This defect is considered MUST-FIX for Winston Beta-5
Comment 4 Stelian Pop 2000-07-18 17:22:43 EDT
Created attachment 1307 [details]
output of ddc probe on a Voodoo 3 AGP
Comment 5 Stelian Pop 2000-07-18 17:24:01 EDT
I don't know if this is enough, but running the
WinstonBeta3CD1:/RedHat/instimage/usr/sbin/ddcprobe binary on a RedHat 6.2
system gives me the following (see the attachment).

The ___ffff ID seems to be the same thing I saw when installing the beta (quite

Is this enough information for you or not ?
Comment 6 Matt Wilson 2000-07-18 18:41:00 EDT
Fixed in CVS.
Comment 7 Stelian Pop 2000-08-18 14:59:01 EDT
Well, it doesn't seem so...

This time my monitor is under: DDC Probed Monitor -> Unsupported Monitor (31.5
kHz / 60 Hz).

I'm reopening the bug.

Comment 8 Matt Wilson 2000-08-18 15:02:14 EDT
ddcprobe didn't get a reply from the monitor, this may be due to a kvm switch, a
loose cable, or the phase of the moon.
Comment 9 Stelian Pop 2000-08-18 15:08:35 EDT
Should I try the installer again ?
Comment 10 Matt Wilson 2000-08-18 15:10:46 EDT
I'd just install and run the "ddcprobe" command off the CD in
RedHat/instimage/usr/sbin and see what pops out
Comment 11 Stelian Pop 2000-08-18 15:36:17 EDT
Created attachment 2677 [details]
ddcprobe output
Comment 12 Stelian Pop 2000-08-18 15:37:27 EDT
I suppose you are meaning the usr/sbin/ddcprobe from the iso image
/mnt/cdrom/RedHat/base/stage2.img ? :)

Done, output seems correct to me :(

Comment 13 Stelian Pop 2000-08-18 15:45:13 EDT
Oops, after reading my own attachement it seems that ddcprobe didn't worked so
well :)

But I'm sure that this worked 1 second before I send the output to the file to

I tried again but each time I get the 'EDID read failed, returned empty data'.

Maybe this works only one time, when the is booted ? 

Anyway, seems that your theory on the moon phase is correct...


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