[Bug 71461] monitor doesn't get detected after boot or disconnection

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=71461

--- Comment #29 from Alex Deucher <alexdeucher at gmail.com> ---
Created attachment 131821
  --> https://bugzilla.kernel.org/attachment.cgi?id=131821&action=edit
reverse hpd polarity

It sounds like your board by have the hpd pin polarity reversed (so plug events
looks like unplug and vice versa).  Please attach a copy of your vbios:

(as root)
(use lspci to get the bus id)
cd /sys/bus/pci/devices/<pci bus id>
echo 1 > rom
cat rom > /tmp/vbios.rom
echo 0 > rom

Can you also try the attached patch which reverses the hpd polarity?

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