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Bug 1081738

Summary: [GK106 - GeForce GTX 660] Dual head doesn't work with DP + DVI
Product: Red Hat Enterprise Linux 7 Reporter: Michal Domonkos <mdomonko>
Component: kernelAssignee: Ben Skeggs <bskeggs>
kernel sub component: Graphics QA Contact: Desktop QE <desktop-qa-list>
Status: CLOSED CURRENTRELEASE Docs Contact:
Severity: unspecified    
Priority: unspecified CC: lkolacek, mdomonko
Version: 7.0   
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2015-08-03 08:44:28 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Attachments:
Description Flags
dmesg
none
Xorg.0.log none

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