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bmav25
Paper Tape
Posts: 3
Registered: ‎08-09-2013
Location: United States
Views: 2,460
Message 1 of 6

T430u - External display not detected via HDMI

Hi, 

 

I am trying to simply connect my T430u to an HP 23xi display (HDMI port to HDMI port), but the external monitor does not recognize the input.  Based on a previous discussion thread, it seems this might be related to video card configurations.  I am not too familiar working with a dedicated graphics card, but my expecations were that it should be plug and play, as I am able to do with my G580.

 

Is there some sort of hardware restriction on how this should function?  I tried accessing the NVIDIA control panel, but the only options related to 3D graphics.  I'm not sure of any other way this should be configured.

 

Any help is appreciated.

 

 

Basic Info:

Integrated Graphics Intel HD 4000 (Driver Version 8.15.10.2778 - up to date)

NVIDIA GeForce GT 620M (Driver Version 8.17.12.9673 - up to date)

 

lead_org Microsoft MVP Contributor
Microsoft MVP Contributor
Posts: 21,009
Registered: ‎12-19-2008
Location: Australia, Melbourne
Views: 2,452
Message 2 of 6

Re: T430u - External display not detected via HDMI

The HDMI on my T430u which also has the Nvidia GPU works whether it is in Nvidia Optimus or Intel GPU mode.

Are you using windows 8?

When Nvidia GPU is activated the external screen is controlled by the Nvidia display control box.

Also have you tried the HP external monitor's HDMI port with other laptops like your G580?
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
bmav25
Paper Tape
Posts: 3
Registered: ‎08-09-2013
Location: United States
Views: 2,428
Message 3 of 6

Re: T430u - External display not detected via HDMI

I'm running Windows 7 Professional on the T430u, and the HP display works seamlessly with the G580 via HDMI so I don't think the HDMI cable or the monitor itself are the issue.

 

Thanks for such a quick reply!

lead_org Microsoft MVP Contributor
Microsoft MVP Contributor
Posts: 21,009
Registered: ‎12-19-2008
Location: Australia, Melbourne
Views: 2,403
Message 4 of 6

Re: T430u - External display not detected via HDMI

have you tried to uninstall the nvidia and intel video driver then reinstalling it?
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
bmav25
Paper Tape
Posts: 3
Registered: ‎08-09-2013
Location: United States
Views: 2,385
Message 5 of 6

Re: T430u - External display not detected via HDMI

I reinstalled the display drivers, but I'm still having the same issue.  

 

When I unplug the HDMI from the computer, the monitor displays "Check Video Cable", and when the HDMI cable is plugged back in, the monitor displays "Monitor Going to Sleep".  

lead_org Microsoft MVP Contributor
Microsoft MVP Contributor
Posts: 21,009
Registered: ‎12-19-2008
Location: Australia, Melbourne
Views: 2,364
Message 6 of 6

Re: T430u - External display not detected via HDMI

I have completely switched off the Nvidia GPU in the BIOS by selecting the integrated GPU mode, and i am currently using the Intel 9.17.10.2932 driver.

Have you tried to use the T430u HDMI on another monitor with HDMI port?
Regards,

Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft

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