Red Hat Bugzilla – Bug 89472
Installer detects DVI port but uses VGA port
Last modified: 2007-04-18 12:53:15 EDT
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Description of problem:
When installing on a machine with an nVidia GeForce4 Ti 4400 graphics card with
both VGA and DVI ports the installer correctly detected that the monitor was
connected to the DVI port. The graphics install however started on the VGA port.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Start install
2. See that the installer detects that the monitor is on the DVI port
3. The installer enters graphics mode, but with output on the ordinary VGA port
Actual Results: Had to find a VGA monitor cable.
Expected Results: Install should have used the DVI port.
Mike is there anything we have to do in the XF86Config to have the output come
on the alternate controller?
The probe succeeded because we use the video BIOS.
I've no DVI panel hardware and no experience configuring or using XFree86 on
LCD panels, so I'm afraid I can't really give an informed answer. ;o/
What I can however say for sure, is that the "nv" driver DVI support is
experimental only and not something Red Hat "supports" other than that
we ship it because it is in XFree86. The DVI support there is known to
have problems, and unfortunately for both us, and for Nvidia hardware
owners using the "nv" driver, only Nvidia can really fix the driver
All I can do is refer people to the "nv" manpage, and to XFree86.org
bugzilla for Nvidia to be able to investigate driver specific problems
and queries, and fix and/or recommend workarounds.
I do really need to be sent a flat panel display some time soon however
if I'm expected to even be able to remotely try to investigate LCD panel
Don't know if this is the answer or not, but from the "nv" driver manpage:
Option "CrtcNumber" "integer"
nForce2, Quadro4, GeForce4 and NV30 may have two video outputs.
The driver attempts to autodetect which one the monitor is con-
nected to. In the case that autodetection picks the wrong one,
this option may be used to force usage of a particular output.
The options are "0" or "1". Default: autodetected.
Option "FlatPanel" "boolean"
The driver usually cannot autodetect the presence of a flat
panel so this option should be set when used with a flat panel.
With this driver a flat panel will only work if it was POSTed by
the BIOS, that is, the machine must have booted to the panel.
msf, does this help?
*** This bug has been marked as a duplicate of 88360 ***
Changed to 'CLOSED' state since 'RESOLVED' has been deprecated.