Awesome! This actually got me up to 2450x1600 progressive-scan 60Hz CVT-RB on my HP laptop with an Intel HD Graphics 4600 controller! (It also has an Nvidia 840M discrete GPU but I don't think that matters because the video outputs are both hooked up to the Intel controller--you can see that in the Nvidia control panel's PhysX tab).
I was going to give up; but a further attempt remained: to try the conversion DVI (monitor) to HDMI (notebook). Truly, this allowed me to (Selected the Display) set again the 2560x1400 32bit 30p Hz CVT through the INTEL function above (last update here: http://downloadmirror.intel.com/23885/a08/win64_153322.zip) Note that this setting was apparently rejected, but after closing and opening again (mouse right-click on the desktop) this new option was visible in the Custom Resolution list. So far, going to the Display Properties I could see not only, near the 1920x1080, the 2560x1400 for the Dell "U2713HM (Digital)", but even this time it was set as (Recommended). Bingo! Don't warry if on your click to Apply, the sistem hangs again. Be patient, on restart it should be all right, perfectly working (or at least still adjustable): to me, no icon displaced now and the hibernation is immediate and fully functional. If you use Virtualbox, don't forget to run-update the Extension_Pack thereafter.
I could obtain the visisility 2560x1440, 30 with a Dell UltraSharp U2713HM on NVIDIA 630M (notebook TOSHIBA Satellite 875-P, Windows8) after several OS' hangs (even with the monitor off) and re-boot, making the setting accepted by the INTEL Graphic Options/Custom Resolution, and retrying to set the display properties after booting.
BUT I meet repeated desktop icons displacements and above all it seems impossible to recover any hibernation (that I must use daily). The ibernating process is very slow, and on restart it ends into a black window, no mouse or keyboard working; must power off.
Firstly may I thank you for writing such an excellent and comprehensive article. This really helped me to resolve the problem. Much communication with the help desks of Toshiba, Samsung and Intel failed to resolve the resolution problem but your article did so again thank you. To the specifics: I have a Toshiba Portege Z930 laptop running Windows 7 professional. I have this linked to a Toshiba tower dock (which I have to say I am very disappointed with). I purchased a new Samsung S27B970D ultrahigh definition LED monitor with a native resolution of 2560x1440. I was completely unable to get the remote monitor to work at this resolution. It would not go beyond the native resolution for the laptop of 1920 x 1200. After reading your article I found it impossible to increase the resolution until I bypassed the Toshiba dock and took the HDMI cable straight from the monitor to the laptop computer. I was then able to achieve a resolution of 2560 x 1440 at 55 Hz. I also discovered that I needed to change the refresh rate to 55 Hz in the summary Intel graphics and media control panel. As you suggested I also adjusted the timing standard to CVT-RB. Success!!! Photographs and YouTube videos look fantastic
Very helpful! Following guidance for 'Intel Iris Pro 5200 (Haswell) / new Intel driver interface", my Yoga Pro 2, Window 8.1 connected via HDMI to a ViewSonic VP2770-LED is now running at 2560x1440 at 55hz. Stable and clean. Thanks so much.
Hello everybody, I'm new to this forum, just wanted to ask, I've bought recently DELL U2713HM, and now trying to connect it to newly bought SONY VAIO FLIP 15A over HDMI (no other option on the NB). I have a 1.4 highspeed ethernet HDMI cable, but via custom resolution I'm able to achieve just 40Hz with 2560x1440, CVT-RB, non interlaced. Over 40Hz display warns unsupported mode and doesn't show the signal. Does anyone managed to connect to DELL U2713HM over HDMI 2560x1440 with higher frequency? How?
Very good article! I am able to use 2560x1440@55Hz via HDMI from my Gigabyte U2442N (HD4000 & Nvidia GeForce GT 640M working toghther via Optimus) to a Dell 2713H. Very good picture with no flickering and even the pivot mode works fine. :-)