I want to connect an external screen wit 2560×1440 resolution to my ThinkPad with Intel HD 620 Graphics and Windows 10. According to the specifications, 2560×1440 should be easily supported.
The Laptop has HDMI and USB-C outputs.
An HDMI cable leads to the maximum resolution offered as 1920×1080.
Using a dual-link DVI cable with a USB-C adapter at the USB-C output gives a maximum selectable resolution of 1680×1050.
These are both in Windows display settings and also in Intel Graphics Control Center.
The above also holds when I reduce the refresh rate.
Is it possible that the USB-C adapter causes the problem? Are there different USB-C to DVI-D adapters to look out for? After all, the laptop, external screen, and DVI-D cable should support the 1440p-resolution.
