Bug 1081738 - [GK106 - GeForce GTX 660] Dual head doesn't work with DP + DVI
Summary: [GK106 - GeForce GTX 660] Dual head doesn't work with DP + DVI
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: kernel
Version: 7.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Ben Skeggs
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-03-27 20:32 UTC by Michal Domonkos
Modified: 2015-08-03 08:44 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-08-03 08:44:28 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
dmesg (66.22 KB, text/plain)
2014-03-27 20:33 UTC, Michal Domonkos 		no flags Details
Xorg.0.log (49.32 KB, text/plain)
2014-03-27 20:33 UTC, Michal Domonkos 		no flags Details
View All

Description Michal Domonkos 2014-03-27 20:32:38 UTC 
Description of problem:
DisplayPort and DVI combo doesn't work on this card; the DisplayPort monitor just stays off after being enabled via Settings -> Display.

The only way to have dual head is to connect both monitors to the DVI ports.

lspci -nn | grep VGA:
28:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK106 [GeForce GTX 660] [10de:11c0] (rev a1)

Version-Release number of selected component (if applicable):
xorg-x11-drv-nouveau-1.0.10-5.el7.x86_64
kernel-3.10.0-115.el7.x86_64
Comment 1 Michal Domonkos 2014-03-27 20:33:09 UTC 
Created attachment 879650 [details]
dmesg
Comment 2 Michal Domonkos 2014-03-27 20:33:25 UTC 
Created attachment 879651 [details]
Xorg.0.log
Comment 3 Michal Domonkos 2014-03-27 20:34:04 UTC 
If DP monitor used alone, it works fine.
Comment 5 Ben Skeggs 2015-07-22 06:56:06 UTC 
This is somewhat odd, I use a configuration like this in my test box on a regular basis on some (probably not the same) GTX 660 board.

Does this happen on current 7.2 kernels?
Comment 7 Ladislav Kolacek 2015-08-03 07:54:19 UTC 
Problem no longer persists on RHEL7.2. DisplayPort and DVI combo is functional now.

Adding version of components: 
kernel-3.10.0-300.el7.x86_64
xorg-x11-drv-nouveau-1.0.11-1.el7.x86_64
xorg-x11-server-Xorg-1.17.2-3.el7.x86_64
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