[Bug 111495] Black Screen on Ubuntu 18.04 + Intel Graphics with Kernel > 4.15.0-47

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111495

--- Comment #7 from Linuxium <ianwmorrison at gmail.com> ---
Since commit ca876c7483b6 ("gpiolib-acpi: make sure we trigger edge events at
least once on boot") in v4.18 (and also in stable v4.14.68 as commit
fbb37b72489d) the Linux kernel now calls _AEI edge handlers at boot.

Unfortunately the MINIX Neo Z83-4 mini PC has a DSDT bug where some copy and
pasted code for dealing with Micro USB-B connector host/device role switching
messes with the DDC data pin from the HDMI connector (switching it to GPIO
mode) breaking HDMI support.

To fix this a proposed patch has already been submitted to linux-gpio that
disables the running of _AEI edge event handlers at boot using a DMI based
blacklist with the initial version of this blacklist contains the MINIX Neo
Z83-4. This patch is currently under review.

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