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1080p 60Hz outputs but 4k 30Hz doesn't

CJPowell27
By CJPowell27
in Displays
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hey guys, I've got an HP Elitebook G6 that is outputting 1080p 60Hz video to a tv perfectly fine, but refuses to output 4k at any refresh rate. I've tried updating both the intel driver and the Radeon drivers but no luck. Is anyone aware of any other potential causes? The TV itself supports 4k 60Hz and I have an HDMI 2.0 cable.

i5 4670k| Asrock H81M-ITX| EVGA Nex 650g| WD Black 500Gb| H100 with SP120s| ASUS Matrix 7970 Platinum (just sold)| Patriot Venom 1600Mhz 8Gb| Bitfenix Prodigy. Build log in progress 

Build Log here: http://linustechtips.com/main/topic/119926-yin-yang-prodigy-update-2-26-14/

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1080p 60 is the same data rate as 4k 15. If the max speed is 1080p60 for that input,  you can't do 4k at any usuable refresh.

I could use some help with this!

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Need help updating a phone from w8.1 to w10 - Windows - Linus Tech Tips

please, pm me if you would like to contribute to my gpu bios database (includes overclocking bios, stock bios, and upgrades to gpus via modding)

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My beautiful, but not that powerful, main PC:

prior build:

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1 minute ago, HelpfulTechWizard said:

1080p 60 is the same data rate as 4k 15. If the max speed is 1080p60 for that input,  you can't do 4k at any usuable refresh.

The RX550/ laptop documentation states that the laptop is capable of 4k 60Hz. Would it be a tv issue from there?

i5 4670k| Asrock H81M-ITX| EVGA Nex 650g| WD Black 500Gb| H100 with SP120s| ASUS Matrix 7970 Platinum (just sold)| Patriot Venom 1600Mhz 8Gb| Bitfenix Prodigy. Build log in progress 

Build Log here: http://linustechtips.com/main/topic/119926-yin-yang-prodigy-update-2-26-14/

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5 minutes ago, CJPowell27 said:

 

The RX550/ laptop documentation states that the laptop is capable of 4k 60Hz. Would it be a tv issue from there?

What port is on the laptop? (HDMI/do version)

I could use some help with this!

Spoiler

Need help updating a phone from w8.1 to w10 - Windows - Linus Tech Tips

please, pm me if you would like to contribute to my gpu bios database (includes overclocking bios, stock bios, and upgrades to gpus via modding)

Bios database

My beautiful, but not that powerful, main PC:

prior build:

Spoiler

 

 

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26 minutes ago, HelpfulTechWizard said:

What port is on the laptop? (HDMI/do version)

HDMI 2.0 

i5 4670k| Asrock H81M-ITX| EVGA Nex 650g| WD Black 500Gb| H100 with SP120s| ASUS Matrix 7970 Platinum (just sold)| Patriot Venom 1600Mhz 8Gb| Bitfenix Prodigy. Build log in progress 

Build Log here: http://linustechtips.com/main/topic/119926-yin-yang-prodigy-update-2-26-14/

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