Red Hat Bugzilla – Bug 442965
Graphical dual head configuration doesn't detect second video card
Last modified: 2009-07-14 13:36:09 EDT
Description of problem:
latest rawhide, when you attempt to configure a secondary graphics adapter via
system-config-display you do not see a list of installed graphics cards however
Xorg does recognize them:
(--) PCI:*(0@0:13:0) nVidia Corporation GeForce 6100 nForce 430 rev 162, Mem @
0xdc000000/16777216, 0xb0000000/268435456, 0xdb000000/16777216, BIOS @ 0x?????
(--) PCI: (0@2:0:0) nVidia Corporation G70 [GeForce 7600 GS] rev 161, Mem @
0xdf000000/16777216, 0xc0000000/268435456, 0xde000000/16777216, I/O @ 0x0000ec00/
128, BIOS @ 0x????????/131072
(==) Matched nv for the autoconfigured driver
Steps to Reproduce:
1. Use two (nvidia) graphics cards and attempt to configure dual head
2. load system-config-display
3. click on Dual-Head tab to see a empty list
System will not run dual head and hangs if you attempt to manual configure it.
Working dual head display that works in F8
Created attachment 302816 [details]
Could we get /var/log/Xorg.0.log as well, please?
Created attachment 302896 [details]
This is the log from the last boot where I had the issue (Xorg.0.log is clear
as I reverted to single head).
Notice the keyboard line, however I *do not* have any keyboard line in my
Does xorg.conf get used by rhgb? rhgb completely hangs when I try and run dual
This is *NOT* an nvidia bug. This is a Xorg bug (I think, at the least it's not
nVidia), if I set a BusID parameter *no matter which driver I'm using* whether
it be the 'nv' 'nvidia' *or* vesa driver the system locks up, hell even doing
*single* head with a BusID parameter it crashes.
Where do you have your nvidia driver from? nVidia website or some other repo
(packaged as rpm)? If the former, please, follow the instructions on
http://fedoraproject.org/wiki/Xorg/3rdPartyVideoDrivers to make sure, that your
installation is OK (it IS damaged by the installation of nVidia tarball).
Otherwise, assigning to developers.
I've tried the nv driver from standard repos, and I've tried the driver from the
nVidia website :)
(In reply to comment #6)
> I've tried the driver from the nVidia website :)
Although we don't like (and support) binary-only nVidia drivers at all, it is
much better to use it at least packaged for your particular version of Fedora. I
am not allowed where to find the repository, but if you find it yourself, AFAIK
it doesn't corrupt other parts of Xorg (see the URL in comment 5 for more
explanation on this).
Changing version to '9' as part of upcoming Fedora 9 GA.
More information and reason for this action is here:
I am experiencing a very similar problem with FC9 i386 and am using two nVidea NV11 [GeForce2 MX/MX 400 Cards. The primary card is PCI and the secondary card is AGP.
This setup was functioning very well in FC8. I did a clean install to FC9 and experienced the same problems as Mr. Harvanek. Then I went back and did a clean *reinstall* of FC8 and manually reconfigured xorg.conf to work with the above video cards. Then today I tried the PreUpgrade version of moving from FC8 to FC9.
The tranfer was not problem free but the FC8 version of xorg.conf caused the boot up to crash right after Starting udev [OK] had occurred.
I was able to modify my FC8 version of xorg.conf by commenting out the BusID lines. That would allow me to use my primary screen only.
From searching several threads on this problem I suspect that the problem may revolve around changes made in FC9 for the xandr feature.
I have only used the nv drivers provided by the fedora distros.
Until this problem can be resolved I will spend the majority of my computer time using the dual monitor feature in Microsoft XP Home. I monitor this bug report from there.
This issue still exists in F10. Same exact symptoms.
Scott, I have resolved my similar problem with F10 by following the instructions on Mauriat Miranda's web page Fedora Nvidia Driver Install Guide: http://www.mjmwired.net/resources/mjm-fedora-nvidia.html
I think Matej Cepl's cryptic comment #7 may have been in reference to this approach. After installing the nVidia driver I rebooted and removed the xorg.conf file and rebooted again. The replacement file was then easy to modify to get both of my GeForce2 MX/MX 400 video cards to fire up (one PCI and one AGP 2x). I was also able to add the Option "Xinerama" "true" which now works like it did way back in FC8. I also found a very large Readme File from nVidia that was helpful in adding sections and content to the xorg.conf file.
Hope this is of some help.
dmuhlethaler at comcast dot net
(In reply to comment #11)
> I think Matej Cepl's cryptic comment #7 may have been in reference to this
I am sorry, but I am not allowed to be more clear than I was.
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