XBR65X850C advanced resolutions

14 replies

I have a radeon R7 260 using the CAC-1070 to connect to my XBR65X850C. the TV should handle 4k 60Hz 4:4:4 and 1080P 120Hz over Hdmi 2.0 but neather of these resolution work. if I switch to 30hz 4k work and 60Hz 1080P but I game at 120hz 1080P and work at 4k 60hz with 4:4:4 being a must.

for the life of me I cant figure out how to get this to work. I see lots of people saying with Nvidia card to switch between RGB and ycbcr but I don't get those options with AMD.

I seem to be able to do 4k60 4:2:0 to my vizio 70P but it doesn't support 4:4:4

I will be pulling one of my gtx 970's from my gaming rig and testing the tv with the native HDMI 2 port in the next couple days but I would rather just fix the AMD problem as its a PITA to get the cards out of my gaming rig.

after reading a bunch on the forum I see I am going to be asked several questions. let me just speed things up and answer them.

tv is set to enhanced HDMI mode
Hdmi cable is brand new and rated at 18gbps(have tried 3 others with same results)
AMD driver 16.7.2

HI Guentha,

Did you try the making the Cusotm Resolution with TIming Standard set to CVT-Reduced Blanking ?

I have not but will do that today and give it a shot.

tried Custom Resolution with TIming Standard set to CVT-Reduced Blanking but no joy.

tried both 3840x2160 60 and 1920x1080 120 both produce a no input error on the TV.

just for fun I tried all the other timing standards as well with no luck.

I switched color depth to 8 bit but it also didn't help.

I will pull a gtx 970 tomorrow from my gaming rig and make sure there is nothing going on with the TV.

I did get 1080 at 120hz on my Vizio p series so I know the adapter and card can do it but my Vizio can't do 4k 60 with 4:4:4 so I couldn't test that.

TV handles both 1080P 120hz and 4k 60HZ from a gtx 970. 

looks like the problem is in the adapter itself.

Soooo......does this thing just go in the trash? it cant seem to handle more than 1.4 spec.

The latest firmware we send by wmail did not sort any result ?

No change. Newest firmware. TV also on newest firmware. Confirmed working TV and cabling.

what is the type nr of your R7 260 ?

Not sure what you meant by "type NR" but it is a powercolor 2GBD5-TDHE.OC

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