Hi all,
Hoping for some help- I've picked up a Toshiba P75-A7200 laptop, and the specs state that the HDMI port will support up to 4K out. The unit has Intel 4600HD graphics, so that supports 4K also.
I've got a ViewSonic VP2770-LED monitor (1440P) and would like to run it at its native resolution of 1440P.
I have tried three different HDMI cables, each claiming 1.4a support. The monitor works great at 1440P via both dual-link DVI and DisplayPort (neither of which the Toshiba has).
I've tried the latest Toshiba display drivers, the latest Intel display drivers, Windows 7x64, Windows 8, and Windows 8.1 pro, with no success.
When I try to enter 2560*1440, 32-bit, at 30, 40, 50, or 60Hz, (using the CustomModeApp utility) I get 'resolution selected exceeds maximum bandwidth' error. Based on the 4K support, I shouldn't be anywhere near the bandwidth limit.
Any ideas? I'm stumped.