[Bug 90951] HD4000: Display connected to displayport doesn't wake up when it's turn off and on or enters power saving mode

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=90951

--- Comment #6 from Thomas Mann <rauchwolke at gmx.net> ---
after
[   44.484441] [drm:drm_mode_addfb] [FB:44]

i attached the display to the displayport

and after 


[   91.427813] [drm:intel_crtc_cursor_set_obj] cursor off

i called 

sleep 1 ; xset dpms force standby

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