Public bug reported:
In Ubuntu 17.10 OS while testing with Dell XPS 9360, Dell Latitude
7370, Gigabyte Z170X-Gaming 7 (Desktop)we found that only two monitor
can be display with resolution over 2K, it must lower the resolution to
1080p , then both 3 monitor can be display. However, this phenomenon
does not happen on Ubuntu 16.04 OS version.
Test environment:
1. Host + DUT + 3 monitor (DP1 + DP2 + HDMI), resolution set 1080p, All monitor
can display
2. Host + DUT + 3 monitor (DP1 + DP2 + HDMI), resolution set by monitor
default, only DP1/DP2 can display, host and HDMI no display (system can detect
monitor EDID)
** Affects: xubuntu-meta (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1751753
Title:
Triple video output with over 2K resolution fail on Ubuntu 17.10 butOK
on Ubuntu 16.04
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