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Bug#884638: linux-image-4.9.0-4-amd64: Display cuts to black and back w/ intel gpu/fifo underrun

Cross-posted to 2 groups.

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I can confirm this. For my Lenovo ThinkPad T450s with 2 external 
monitors, it is exactly the same. Drove me nuts for the better part of a 
day until I realized it was due to 4.9.0-4. As such I'm also back to 
running 4.9.0-3 as a workaround.

In my case I would only* get the flickering (ie. the screen/monitor 
goes blank for a sec or two) in the following scenario:

1) move mouse cursor inside of my GNOME Terminal window
2) use the keyboard to type something (anything)

*With the mouse cursor hovering outside of my term window, I was safe 
so to say. Having said this, occasionally a monitor would also flicker 
when moving the mouse cursor from one external monitor to another.

B/R,
Frederik Dannemare

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Bug#884638: linux-image-4.9.0-4-amd64: Display cuts to black and back w/ intel gpu/fifo underrun John Eikenberry <jae@zhar.net> - 2017-12-17 23:10 +0100
  Bug#884638: 4.13 also seems unaffected John Eikenberry <jae@zhar.net> - 2017-12-19 21:10 +0100
  Bug#884638: Bug #884638 Martin Hardcastle <mjh@extragalactic.info> - 2017-12-21 22:30 +0100
  Bug#884638: linux-image-4.9.0-4-amd64: Display cuts to black and back w/ intel gpu/fifo underrun frederik@dannemare.net - 2017-12-27 14:30 +0100
  Bug#884638: Any word/progress? John Eikenberry <jae@zhar.net> - 2018-01-06 23:50 +0100
  Bug#884638: Still seeing this bug Jonathon Reinhart <jonathon.reinhart@gmail.com> - 2018-06-15 16:10 +0200

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