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Bug 591666

Summary: x.org intel fails to restore video output after suspend or monitor off
Product: Gentoo Linux Reporter: Christian Berger <christian>
Component: Current packagesAssignee: Gentoo Linux bug wranglers <bug-wranglers>
Status: RESOLVED NEEDINFO    
Severity: major CC: alex_y_xu
Priority: Normal    
Version: unspecified   
Hardware: AMD64   
OS: Linux   
Whiteboard:
Package list:
Runtime testing required: ---
Attachments: emerge --info
xorg log of such a failed session

Description Christian Berger 2016-08-19 08:57:54 UTC
Created attachment 443748 [details]
emerge --info

When turning off the monitor for longer periods of time, a few minutes won't do, but a few hours will, there will be no video from X.org. Switching to a framebuffer console will bring perfect video, however switching back to X.org will not get you any video signal any more.
Temporarily unplugging the monitor does not change the situation.

The graphics chipset is the integrated graphics of the "Intel(R) Core(TM) i7-5557U CPU @ 3.10GHz".
Comment 1 Christian Berger 2016-08-19 08:58:39 UTC
Created attachment 443750 [details]
xorg log of such a failed session
Comment 2 Christian Berger 2016-08-19 08:59:50 UTC
Maybe this is an important point, but when you switch to a framebuffer console before turning off your monitor, it'll work just fine.
Comment 3 Alex Xu (Hello71) 2016-08-21 22:22:48 UTC
1. what DE are you using

2. please try "echo xterm > ~/.xinitrc && startx"
Comment 4 Christian Berger 2016-08-22 15:25:57 UTC
I'm using Xfce.

When starting the X-server purely as suggested it seems to work fine.