Bug 18321

Summary: xserver 1.5.2 fails to start with more than one display card
Product: xorg Reporter: Timo Aaltonen <tjaalton>
Component: Server/GeneralAssignee: Xorg Project Team <xorg-team>
Status: RESOLVED FIXED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium CC: airlied, ajax, aplattner, bryce, daniel, eich, freedesktop, mat, matthieu.herrb, naveen.gundlagutta, oli, sgallagh, sndirsch, vignatti, wayland
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Bug Depends on:    
Bug Blocks: 16399, 20314, 20816, 23613    

Description Timo Aaltonen 2008-10-31 00:32:15 UTC
Forwarded from launchpad:

https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/267241

Basically what happens is that the server fails with:

(EE) No device detected.

when there are more than one display device on the system. Some logfiles:

http://launchpadlibrarian.net/17352098/xorg.log
http://launchpadlibrarian.net/19085483/Xorg.log.fail
http://launchpadlibrarian.net/18024794/Xorg.0.log

Setting the BusID allows it to work. I've requested the people to try without an xorg.conf to see if the different autoconfig-paths have something to do with this..
Comment 1 Timo Aaltonen 2008-10-31 01:14:25 UTC
I've noticed that on x86 things seem to work just fine:

http://launchpadlibrarian.net/18858927/XorgLog.txt

and all the non-working logs are from x86_64-systems.

So, is this another example of 64bit-unsafeness?
Comment 2 Timo Aaltonen 2008-10-31 05:13:26 UTC
bah, no.. this is a log from a normal i686 installation:

http://launchpadlibrarian.net/18813910/Xorg.0.log
Comment 3 Timo Aaltonen 2008-12-30 14:52:31 UTC
*** Bug 18839 has been marked as a duplicate of this bug. ***
Comment 4 pgnet 2009-01-15 14:33:35 UTC
I'm seeing the same "(EE) No device detected" error on an x86_64 with 2 NVIDIA cards -- one on mobo, one on pci.

I'm using a source-built 'nvidia' driver (v180.22).

In my case, setting the BusID, apparently, DOES NOT work.

I've previously posted the details, including logs, on nvnews (nvidia) forum @

 http://www.nvnews.net/vbulletin/showpost.php?p=1900659&postcount=1

Comment 5 Bryce Harrington 2009-02-24 13:18:44 UTC
*** Bug 20225 has been marked as a duplicate of this bug. ***
Comment 6 Timo Aaltonen 2009-03-24 08:28:22 UTC
Fedora has a patch which might help here.
Comment 7 Timo Aaltonen 2009-03-24 08:28:51 UTC
sigh, let's put the url here instead:

http://cvs.fedoraproject.org/viewvc/rpms/xorg-x11-server/devel/xserver-1.6.0-primary.patch?revision=1.3
Comment 8 Alan Coopersmith 2009-03-24 21:46:23 UTC
When I suggested the Fedora patch to our PCI/driver guys, they responded that
they'd tried similar things before in the kernel and found that they didn't work
on some platforms.   The code they ended up with instead is:

http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/i86pc/io/gfx_private/gfxp_vgatext.c#gfxp_check_for_console
Comment 9 Julien Cristau 2009-03-24 21:57:54 UTC
let's also mention Dave's patches:
http://lkml.org/lkml/2009/3/4/6
http://lists.x.org/pipermail/xorg-devel/2009-March/000400.html

then i suppose X can use pci_device_is_boot_vga() to look for its "primary" device?
Comment 10 Julien Cristau 2009-03-26 10:46:28 UTC
*** Bug 20878 has been marked as a duplicate of this bug. ***
Comment 11 Oli Wade 2009-05-13 01:13:57 UTC
This is now also fixed in Ubuntu 9.04 (using the redhat/fedora patch) and working for me on x86_64 (xserver-xorg-core: 1.6.0-0ubuntu14) with 2 x nVidia NV43 [GeForce 6600 GT].
Comment 12 freedesktop 2009-06-06 01:12:49 UTC
I just tested in in Ubuntu 9.04 with the latest patched installed and it is still not working. I have two cards (AGP and PCI)

00:08.0 VGA compatible controller: nVidia Corporation NV11DDR [GeForce2 MX200] (rev b2)
01:00.0 VGA compatible controller: nVidia Corporation NV11DDR [GeForce2 MX200] (rev b2)

and I am using NVidia card. The system fails to start with with the output in the log that no primary card found until I went to xorg.conf and manually added to the device section 

BusID "PCI:0:8:0"
Comment 13 Daniel Stone 2009-08-31 17:25:25 UTC
dave, this all got merged to master, yeah? if so, can we close it at least for 1.7?
Comment 14 Dave Airlie 2009-08-31 17:40:32 UTC
yup should all be in master now + libpciaccess 0.10.8 for Linux.

if this keep happening with a 1.7 server please re-open.

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