[Bug 103347] [dp] intel_dp.c:1554 WARN_ON(len <=8)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103347

--- Comment #46 from Phil67ago <p1mail2015 at mail.com> ---
As mentioned in bug 106291 there are no DHCP at all when booting up with a
disconnected cable. Then simulate DCHP data in same manner as edid data on the
Kernel command line would be possible but seems complicated.

Solved my problem in another way. Skipping edid and force.
Instead trigger the udev event when the cable is connected and run following:

LibreELEC 9.0


/storage/.config/udev.rules.d/99-drm-hotplug.rules:
ACTION=="change", RUN+="/storage/.config/udev.rules.d/drm-hotplug.sh"


/storage/.config/udev.rules.d/drm-hotplug.sh:
#!/bin/sh

[ -e /run/xorg-hotplugged.done ] && exit

/bin/sleep 1
XRANDR=`xrandr -d :0.0`
connector=`echo "$XRANDR" | sed -n 's,\(.*\) connected [
\a]*\([x+0-9]*\).*,\1,p'`
mode=`echo "$XRANDR" | sed -n 's,\(.*\) connected [
a-z]*\([0-9]*x[0-9]*\).*,\2,p'`

[ -z "$connector" ] && exit 
[ ! -z "$mode" ] && exit 

/bin/xrandr -d :0.0 --auto
/bin/systemctl restart kodi

/bin/touch /run/xorg-hotplugged.done

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