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Paper Tape
Posts: 1
Registered: ‎01-06-2020
Location: DE
Views: 279
Message 1 of 2

Edge E531 use dedicated gpu for external monitor (hdmi)



I have a Lenovo ThinkPad Edge E531 N4I9YGE 68859Y with an integrated GPU Intel HD Graphics 4000 and an dedicated GPU NVIDIA GeForce GT 740M. OS is Windows 10.


Now I bought a external monitor which supports WQHD resolution and connected it with a HDMI cable to the ThinkPad. However I can set the resolution only to 1920x1200. 


I read that this is the maximal resolution the integrated GPU Intel HD Graphics 4000 supports. The dedicated GPU NVIDIA GeForce GT 740M should support up to 4k.


Is there a way to set the dedicated GPU as main GPU, also for windows?


I already changed the options in the Intel HD Graphics Control Panel and in the NVIDIA Control Panel so that the high-performance NVIDIA processor is the preferred graphics processor. Some programs now use the dedicated GPU, however I still can't use WQHD resolution on the external monitor.


I also tried to disable the Intel HD Graphics 4000 in the device manager to force windows to use the dedicated GPU. This led to not finding the external monitor at all.


Is HDMI limited to the internal GPU? Is there a way to use the external monitor with its full resolution (WQHD)?


Thank you for your help!


Support Specialist
Posts: 519
Registered: ‎05-02-2019
Location: US
Views: 268
Message 2 of 2

Re: Edge E531 use dedicated gpu for external monitor (hdmi)

Hi @xnapsky!


Welcome to Lenovo Community Forums.


According to the product specification of your ThinkPad E531, the max external resolution of your device is 2048x1536 for VGA connection @75Hz and 1920x1200 for HDMI @60Hz. Hence, you may try to change the Graphics Device in BIOS to Integrated Graphics and observe if you'll have 4k display. If no changes, it's possible that's a system limitation since the indicated resolution for external display from the product specification of the machine is 1920x1200 only.



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