Bug 1293004

Summary: Test case failure: Outputs - VGA on GF108M [NVS 5400M] [10de:0def] (Lenovo T430 dedicated graphics)
Product: Red Hat Enterprise Linux 7 Reporter: Vasiliy Sharapov <vsharapo>
Component: xorg-x11-drv-nouveauAssignee: Ben Skeggs <bskeggs>
Status: CLOSED NOTABUG QA Contact: Desktop QE <desktop-qa-list>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 7.2   
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2016-04-27 05:09:13 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:
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Description Flags
/var/log/Xorg.0.log none

Description Vasiliy Sharapov 2015-12-19 01:52:12 UTC 
Created attachment 1107561 [details]
/var/log/Xorg.0.log

Filed from caserun (https://tcms.engineering.redhat.com/run/260139/#caserun_10820700)

Version-Release number of selected component (if applicable):
RHEL-7.2-20150820.0
xorg-x11-server-Xorg-1.17.2-9.el7.x86_64
xorg-x11-drv-nouveau-1.0.11-1.el7.x86_64
kernel-3.10.0-306.0.1.el7.x86_64
kernel-3.10.0-322.el7.x86_64
linux-firmware-20150904-43.git6ebf5d5.el7.noarch
mesa-dri-drivers-10.6.5-3.20150824.el7.x86_64
Steps to Reproduce: 
obtain a box with VGA output (laptop)


 1. connect screen through VGA port
 2. perform suspend/resume cycle two times



Actual results: 
Hot-un-plugging is undetected. Must run xrandr or something to get the output removed.

Expected results:
Screens should be correctly set, their native resolution should be set and
suspend/resume cycles should work as well
Comment 2 Ben Skeggs 2016-04-27 05:09:13 UTC 
This is not a bug, but the expected behaviour (on VGA outputs only).  It's not possible to detect the unplug without polling, and polling VGA status will cause display flicker.