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Mini DisplayPort to HDMI causes screen flickering
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Joined: 25 Nov 2018
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PostPosted: Sun Nov 25, 2018 6:07 pm    Post subject: Mini DisplayPort to HDMI causes screen flickering Reply with quote

I'm using a laptop (HP Zbook 15u G2). I have two external monitors. One is connected via VGA (1920x1080) and the other by Mini DisplayPort to HDMI (1360X768).
In the BIOS, I have disabled the Intel integrated graphics. I'm using NVIDIA (Quadro K1100M) with the Nouveau drivers.
Gentoo is default/linux/amd64/17.0/ profile.

If I connect the Mini Displayport before my system completes the loading of my Window manager the external monitor begins to flicker (this does not stop).
If I wait until Sway has started I can my DP without the flickering occurring.

I'm not using a Display manager; the flickering occurs in the console and Window manager.
GRUB2 is configured to use a framebuffer graphical display.
I have disabled the Linux bootup logo in Kernel. Although I still see some weird scrambled lines when the kernel boots for a second or two.
Once the init process begins, anything printed to screen is Illegible.

Here is my Gentoo system information (also includes sway config and sway debug log) https://gist.github.com/j1e8WTb1A1nReiUc/57b34630761b25c08c7ee59a1934b46e.
Any direction would be greatly appreciated.

Thanks
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