[Expired for xorg (Ubuntu) because there has been no activity for 60
days.]
** Changed in: xorg (Ubuntu)
Status: Incomplete => Expired
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Christopher, thanks for the hint.
Dell ships a mini-DisplayPort to DisplayPort cable (DP-mDP) with the display.
The mDP cable is connected to the X250 and the DP cable is connected to the
display.
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Hi Christopher,
I have checked this. But by now only with the 27" Dell. (The resolutions
are anyway the same.)
Ubuntu offers resolutions up to 3840 x 2160 px.
The largest working resolution is 1920 x 1200 px.
Both higher resolutions (3840 x 2160 px and 2560 x 1440 px) result in a black
MIME, as a potential WORKAROUND, could you please test the latest
upstream intel driver via https://01.org/linuxgraphics/downloads and
advise to the results?
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MIME, to advise, if you are going to test live environments, please test
the latest one found at http://cdimage.ubuntu.com/daily-live/current/ .
This keeps the results as helpful as possible.
Despite this, to clarify, you are using a mini-DisplayPort cable plugged
into your laptop, and plugging
** Description changed:
- 4k support of my Lenovo X250 with and without docking station does not work.
- Ubuntu offers 4k resolution but my display keeps black.
+ Attempting to use Lenovo X250's mini-DisplayPort, connected to Dell P2415Q's
DisplayPort with Dell provided mDP-2-DP cable on below
** Tags added: latest-bios-1.20
** Tags added: xenial
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https://bugs.launchpad.net/bugs/1547043
Title:
4k Support not working
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