Bug 36142 - Second DVI output produces no signal with nVidia G96 [Quadro FX 380] (rev a1)
Summary: Second DVI output produces no signal with nVidia G96 [Quadro FX 380] (rev a1)
Status: RESOLVED INVALID
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/nouveau (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium normal
Assignee: Nouveau Project
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-04-11 14:29 UTC by Jordan Bettis
Modified: 2013-08-18 18:09 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:


Attachments
xorg.0.log (98.99 KB, text/x-log)
2011-04-11 14:29 UTC, Jordan Bettis
no flags Details
lspci -vvnn (18.07 KB, text/plain)
2011-04-11 14:30 UTC, Jordan Bettis
no flags Details
dmesg (68.96 KB, text/plain)
2011-04-11 14:31 UTC, Jordan Bettis
no flags Details

Description Jordan Bettis 2011-04-11 14:29:30 UTC
Created attachment 45489 [details]
xorg.0.log

I have verified that this is not a problem with the cable nor the monitor (all combinations of monitor and cable work when plugged into DVI-1 and none work when plugged into DVI-2)

xrandr sees the second monitor and detects its make and optimal resolution properly:

jrb@shiloh:~$ xrandr
Screen 0: minimum 320 x 200, current 2560 x 1024, maximum 8192 x 8192
DVI-I-1 connected 1280x1024+0+0 (normal left inverted right x axis y axis) 376mm x 301mm
   1280x1024      60.0*+   75.0  
   1280x960       60.0  
   1152x864       75.0  
   1280x720       60.0  
   1024x768       75.1     70.1     66.0     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        72.8     75.0     66.7     60.0  
   720x400        70.1  
DVI-I-2 connected 1280x1024+1280+0 (normal left inverted right x axis y axis) 338mm x 270mm
   1280x1024      60.0*+
   1280x960       60.0  
   1152x864       75.0  
   1024x768       75.1     70.1     60.0  
   832x624        74.6  
   800x600        72.2     75.0     60.3     56.2  
   640x480        72.8     75.0     66.7     60.0  
   720x400        70.1  
jrb@shiloh:~$ 

But the monitor (either monitor) reports "no signal" when plugged into DVI-2.

Here is
Comment 1 Jordan Bettis 2011-04-11 14:30:50 UTC
Created attachment 45490 [details]
lspci -vvnn
Comment 2 Jordan Bettis 2011-04-11 14:31:09 UTC
Created attachment 45491 [details]
dmesg
Comment 3 Jordan Bettis 2011-04-11 17:42:02 UTC
Hi.

FYI the second DVI output works with the blob, so this is clearly not a hardware issue.
Comment 4 Michal Mocny 2011-07-13 12:31:28 UTC
I am experiencing the same issue with the same video card.

I am running x-edgers ubuntu ppa version of nouveau:

xserver-xorg-video-nouveau:
  Installed: 1:0.0.16+git20110214.46acb7e0-0ubuntu0sarvatt2~maverick
  Candidate: 1:0.0.16+git20110214.46acb7e0-0ubuntu0sarvatt2~maverick
Comment 5 Daniel Nicoara 2011-07-27 08:15:26 UTC
I'm seeing the same problem with the exact same hardware. However, if I boot off the Ubuntu Natty live CD, I get output to both monitors correctly. 

I've also experimented with the live CD and tried booting from it, but having the ISO on one of my partitions and have grub boot off the ISO. In this case I don't get multiple monitors even though it's the exact same ISO. This makes me think it's a timing issue.
Comment 6 Andreas Bierfert 2011-11-13 13:19:13 UTC
Same here. See https://bugzilla.redhat.com/show_bug.cgi?id=744899 as a reference.
Comment 7 Maarten Maathuis 2011-11-13 22:57:47 UTC
You might consider getting some logs with drm.debug=6 (kernel parameter)

This will give you driver specific tracing and kms tracing.
Comment 8 Maarten Maathuis 2011-11-13 23:00:48 UTC
FYI drm.debug=1 is only the default tracing (lot's of ioctl messages!), 2 is driver information, 4 is kms information, they are a bitmask, so 3=normal+driver and 5=normal+kms
Comment 9 Ilia Mirkin 2013-08-18 18:09:47 UTC
It appears that this bug report has laid dormant for quite a while. Sorry we haven't gotten to it. Since we fix bugs all the time, chances are pretty good that your issue has been fixed with the latest software. Please give it a shot. (Linux kernel 3.10.7, xf86-video-nouveau 1.0.9, mesa 9.1.6, or their git versions.) If upgrading to the latest isn't an option for you, your distro's bugzilla is probably the right destination for your bug report.

In an effort to clean up our bug list, we're pre-emptively closing all bugs that haven't seen updates since 2011. If the original issue remains, please make sure to provide fresh info, see http://nouveau.freedesktop.org/wiki/Bugs/ for what we need to see, and re-open this one.

Thanks,

The Nouveau Team


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