[Bug 94766] Segfault and other crashes on Intel(R) HD Graphics 5500 (Dell E7450) while switching between external displays and integreated

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94766

--- Comment #13 from Slawomir Gonet <slawek at otwiera.cz> ---
After few more tests it looks like every single docking attempt on 4.6.0 ends
up with inability to use DP1-2. When on DP1-1, $ xrandr --output DP1-2 --auto
returns "xrandr: Configure crtc 0 failed"

However, with command:
xrandr --output DP1-1 --off; sleep 2; xrandr --output DP1-2 --auto

I am able to switch to DP1-2. But then I am no longer able to use DP1-1:

$ xrandr --output DP1-1 --off; sleep 2; xrandr --output DP1-2 --auto; xrandr
--output DP1-1 --auto
xrandr: Configure crtc 0 failed

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