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120hz not working???

Last response: in Graphics & Displays
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January 20, 2013 9:20:59 PM

Helloo
Trying to get my tv to display at 120hz from my computer.

In the intel HD control panel i have the option to select 800x600 up to 120hz but if i select anything higher than 85hz the tv says "not support". :o 

This is odd as the driver detects i can display 120hz but something goes wrong.

Any ideas?

_____
and yes i need 120hz as it provides a more perfect control with the quake engine and i play on a professional level.


thanks for your help

More about : 120hz working

January 20, 2013 9:22:11 PM

TVs are not 120 Hz - they cannot accept 120 Hz input and are not the same as 120 Hz monitors.

TVs take 60 Hz (or whatever) input and then interpolate between frames to produce a fake 120 Hz.

Sorry - you'll have to purchase a 120 Hz monitor to get a 120 Hz display :( 
a c 110 U Graphics card
January 20, 2013 9:26:33 PM

The intel graphics could display such a list with several resolutions and the respective refresh rate, but what counts is if your tv supports that refresh rate(120hz), which probably don't.
That's why it says it's not supported.
Related resources
January 20, 2013 9:29:17 PM

I contacted my tv's manufactur and they stated that it should indeed accept a 120hz signal and display at 120hz. They even suggested that I try another pc if i had one.


It also has a 120hz badge on the front of the tv.


and also 85hz works. so its not capped at 60 for sure
a b U Graphics card
January 20, 2013 9:40:35 PM

What is the Tv
January 20, 2013 9:43:50 PM

vizio 420vl

specs below
_______



Class: 42"

Viewable: 42.02" diagonal
Tuner: NTSC/ATSC/QAM
Native Panel Resolution: 1920 x 1080 pixels
Signal Compatibility: 1080p, 1080i, 720p, 480p, 480i
Colors: 1.06 Billion
Computer Support: 1920 x 1080, 1024 x 768, 800 x 600, 640 x 480 via RGB/HDMI
Dynamic Contrast Ratio: 100,000:1
Brightness: 500 cd/m2

Response Time: 5ms
Viewable Angle: 178/178 degrees (horizontal/vertical)
Pixel/Dot Pitch: 0.4845mm(H) x 0.4845mm(V)
SRS TruSurround HD™: Yes
SRS TruVolume™: Yes
SRS TruSurround XT™: No



INPUTS (REAR)
HDMI with HDCP 2

RF Connector for Internal Tuner 1
Component YPbPr plus Stereo Audio: 1
S-Video:

Computer RGB: 1
Composite Video: 1

USB Ports:

Photo (JPEG):




INPUTS (SIDE)
HDMI with HDCP 1

RF Connector for Internal Tuner
Component YPbPr plus Stereo Audio:
Composite Video:
S-Video:
Computer RGB:
USB Ports: 1

Music (MP3):
Video (MPEG):
Photo (JPEG): 1




OUTPUTS (REAR)
SPDIF Digital Optical: 1
Stereo Audio: 1

Headphones:




ADDITIONAL FEATURES
Refresh Rate: 120Hz
Smooth Motion: Yes
Panel Type: CCFL, LCD

Picture-in-Picture (PIP): Yes

Picture-outside-Picture (POP): Yes
Zero Bright Pixel Defect Guarantee: Yes

V-Chip: Yes
3D Comb Filter: Yes
3:2 or 2:2 Reverse Pull-down: No
ATSC with 8VSB & QAM demodulation: No
ATSC with MPEG-2 decoding: No
NTSC Video decoding via Video: No
Progressive Scan Video: No
Color Temperature: 5400K, 6300K and 9300K
Color Fine Tuning:
Speakers: Built-in 10W x 2 Speakers
Panel Lamp Life (typical): 50,000 Hours
Voltage Range: 240Vac at 50/60Hz
Power Consumption: 111W, <0.37W Standby
VIZIO Remote Control: VR15



WEIGHT
Gross: 42.99 lbs
Net With Stand: 32.85 lbs
Without Stand: 31.09 lbs



DIMENSIONS
With Stand: 40.26"W x 27.48"H x 8.99"D
Without Stand: 40.26"W x 25.91"H x 3.51"D
Packaging Dimensions: 45.07"W x 32.67"H x 7.48"D




CERTIFICATIONS CSA, CSA-US, FCC Class B



COMPLIANCES Energy Star 4.1 ATSC Spec A/65, EIA/CEA-766-A



WALL MOUNT SPECIFICATIONS
Hole Pattern: VESA standard 200 X 200mm spacing

Screw Size: M6
Screw Length: 20.0mm
Screw Pitch: 1.25 mm



VIZIO WARRANTY One Year Parts & Labor Free Lifetime Technical Support
January 20, 2013 9:49:53 PM

Well believe whatever you want but I've never heard of any TV that will take 120 Hz input and I'd bet money that the guy you talked to doesn't have a clue what he was talking about.

If you want 120 Hz you need a 120 Hz monitor.
a c 216 U Graphics card
January 20, 2013 10:00:16 PM

Your problem is the lack of a dual link DVI-D connection or Displayport connection. HDMI does not support 120hz until version 1.4b starts getting used.
January 20, 2013 10:00:46 PM

It will take 85hz. So it's definitely not the standard tv capped at 60hz.

Also the hdmi cable the tv specified stated it was 120 hz ready.

IDK i'm just leaning towards a problem with the intel video drivers or windows 7. As i've seen some complaints rolling around about not being able to set more that 85hz.
a c 216 U Graphics card
January 20, 2013 10:06:23 PM

dingo07 said:
get a High Speed HDMI cable

or use this... with caution - http://www.entechtaiwan.com/util/ps.shtm


It doesn't matter how high speed the cable is, the TV's HDMI connection has to support HDMI 1.4b to run at 120hz. It is only as strong as its weakest link, and the TV's connection is the weak link.
a c 216 U Graphics card
January 20, 2013 10:07:45 PM

Skroob said:
It will take 85hz. So it's definitely not the standard tv capped at 60hz.

Also the hdmi cable the tv specified stated it was 120 hz ready.

IDK i'm just leaning towards a problem with the intel video drivers or windows 7. As i've seen some complaints rolling around about not being able to set more that 85hz.


You'll have to search for the HDMI version, but if it is not HDMI 1.4b, which there are none used yet in the industry, it will not support 120hz, except through frame packing, which is a HD3D thing and that requires HDMI 1.4a.
January 20, 2013 10:13:28 PM

ok so what about VGA port to RGB computer support on the tv?

a c 216 U Graphics card
January 20, 2013 10:20:50 PM

VGA also will not support 120hz at 1080p.

Here is the manual, it does not support 120hz: http://www.manualowl.com/m/Vizio/E420VL/Manual/157479

Look at page 70, it lists all the PC resolutions and refresh rates accepted. At low resolutions, it will go to 75hz, but that is all that is officially supported, which obviously means that is not HDMI 1.4b, which means there still are none out.
January 20, 2013 10:28:58 PM

hmmm so i wonder if i will burn my tv up if i set it to 85hz in my drivers as it does take it.
a b U Graphics card
January 20, 2013 10:29:13 PM

I don't want to sound like a troll or anything but if you are playing games at a professional level why are you trying to game on a TV? go and buy a proper monitor.
January 20, 2013 10:32:04 PM

ShadyHamster said:
I don't want to sound like a troll or anything but if you are playing games at a professional level why are you trying to game on a TV? go and buy a proper monitor.


I wasn't going to go there but I'm glad someone did :lol: 
January 20, 2013 10:49:16 PM

i was in a house fire and my equipment burned. I was also burned with 2/3 degree over 30 percent of my body. Had to have skin grafts.

this tv thing is the only thing i have to work with atm as i'm disabled and back living with my parents ;(

also this tv work really well out of the rgb port. I was pleasantly suprised therese very little noticable ghosting and only 5ms response time. It works better as is than with alot of the monitors i've used in the past. If i coulda got the extra 35 frames it would work.

It is a little 2 big though. :heink: 


thanks for you help guys
a b U Graphics card
January 20, 2013 11:58:52 PM

The worst that will happen to your TV if you try to force 120 Hz is that it will just say the signal is not supported.

In the back of the manual, it should have a table that shows the maximum resolution and refresh rate the TV supports.

Casey
!