I would try the following:
- Update LCD's firmware, if you can find updates. (For the one it does not work)
- Get the latest drivers directly from Intel - HD 630
- Try to get the correct cable from the specification, you should have a DVI Digital Link : TMDS cable.
What is TMDS (details)?
Transition-Minimized Differential Signaling (TMDS)
DVI makes use of Transition-Minimized Differential Signaling (TMDS)
wherein eight bits of video data are converted to a 10-bit
transition-minimized, DC-balanced value. This value is then
serialized and sent to the receiver where the data is de-serialized
and converted back to eight bits.
The three TMDS signals needed for RGB make up one TMDS link. A DVI
connector can carry up to two TMDS links providing for better
resolutions and timing requirements. Single TMDS link DVI cables can
support resolutions and timings that use a video clock rate of about
25-165 MHz.
The following resolutions and timings are supported by a single link
DVI cable:
SXGA resolution (1280 x 1024) with 85-Hz refresh rate UXGA resolution
(1600 x 1200) with 60-Hz refresh rate SDTV resolutions of 480i, 480p,
576i and 576p HDTV resolutions of 720p and 1080i Video clock rates of
165-330 MHz on the other hand, are supported only by dual TMDS link
DVI cables. With dual link DVI cables, however, each TMDS link
operates at only one-half the frequency of single link DVI. So the
clock and bandwidth is shared by these two links.
That would spell DVI-D dual-link.
You can buy display port cable on one side and DVI-D on other - must be able to do 1440p or 1080p at 144hz.
- Did you try all options connecting to the graphic card? The options are HDMI 1.4, DisplayPort (DP) 1.2, an Embedded DisplayPort (eDP) 1.4 interfaces. How are you connecting to your DVI-D on your LCD? (Could you list cables you tried?)
First Edit
- Does the other 214T work elsewhere? Maybe it needs to be fixed - Repairing a samsung syncmaster 214t