[Bug 104257] [CFL-S] DP monitor is detected as second monitor when there is only one connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104257

--- Comment #19 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to shashank.sharma at intel.com from comment #6)
> LSPCON can't generate EDID, it reads from the connected Sink only.

It shouldn't, but what do we know, really? It's a black box. From the logs:

[   18.196168] [drm:drm_add_edid_modes.part.30 [drm]] ELD monitor BOBCAT2800

i.e. the "display" claims its name is BOBCAT2800 which I believe is the LSPCON
codename.

My educated guess is that the LSPCON has some sort of test mode where it fakes
a connected display when one is in fact not connected. And that mode is enabled
on the machines in question. Already comment #0 alludes to this by saying that
with HDMI display connected (to the LSPCON) there are no issues.

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