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17 Posts

06-12-2014

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T470 HDMI not working

2017-11-05, 22:59 PM

model: Thinkad T470 20HDCTO1WW (Intel HD Graphics 620 chipset)

OS: Windows 10

 

I cannot connect my Thinkpad to an HDMI display. Connecting the HDMI out to my Sony KDL-40600B I get audip and a message on the TV that says “Unsupported signal. Please check the device output. Same result on  Samsung TV. I’ve used the Thinkpad assistant to update all my drivers and BIOS and even used the Intel assistant to update the Intel chipset drivers (probably not necessary as only wifi and Bluetooth were updated.) Most of the information on the internet when I search for this type of issues is 5+ years old. Some assistant is urgently required.

 

TIA

Jake

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4281 Posts

12-11-2015

United States of America

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Re: T470 HDMI not working

2017-11-05, 23:37 PM

Most likely that is due to the video resolution and frequency of the signal you are trying to send to the TV is not supported, so you may have to try changing video settings on both devices to get them to match up so it will work.

 

Good Luck,

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17 Posts

06-12-2014

United States of America

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Re: T470 HDMI not working

2017-11-06, 0:08 AM

The driver seems to detect the display and I've played with every setting the Sony specs mention (see screenshots...) no avail :-(

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2 Posts

01-31-2018

Portugal

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Re: T470 HDMI not working

2018-01-31, 10:21 AM
Sorry to dig this up, but I have almost exactly the same problem but:
it worked last week
the Tv is a Panasonic

did you found a fix for this?
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17 Posts

06-12-2014

United States of America

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Re: T470 HDMI not working

2018-01-31, 12:26 PM

In my case, it never worked. I sent it back to Lenovo for repair under warranty.

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2 Posts

01-31-2018

Portugal

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Re: T470 HDMI not working

2018-01-31, 13:52 PM
My problem is that the laptop works with another TV at my office but stopped to work at my TV at home.
Thanks anyway
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2 Posts

03-27-2021

Chile

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Re: T470 HDMI not working

2021-03-27, 20:54 PM

NO, no se solucuina cambiándo resolución. En mi T470 al menos,  no. Lo probé de todas las maneras posibles pero no pasa absolutamente nada!! Y LA GENTE DE LENOVO SIGUE SIN DAR SOLUCIONES. Al hacer la conexion con win+P se muestran las opciones de conexión, pero no se realiza la conexión con el monitor externo, simplemente NO ENVIA VIDEO a trave del hdmi.

He actualizado controladores que ofrece lenovo (ya que ellos están al tanto de este problema)para resolver esta falla pero, no sirven para nada. VEO QE NO SE QUIEREN HACER RESPONSABLES DE REPARAR O CAMBIAR LOS EQUIPOS.

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2 Posts

03-27-2021

Chile

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  • Message 8 of 8

T470 HDMI not working

2021-03-27, 22:47 PM
Hola. Has podido resolver el problema con el hdmi?
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