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Gepards 30 Aug @ 1:29am
21:9 3440x1440 resolution for LG C4 tv (AMD GPU RX 9070)
Can't find safe guide how to enable ultra wide resolution mode for LG C4 tv (3440x1440) with AMD GPUs (Adrenalin software). Any help would be appreciated.
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Originally posted by PopinFRESH:
https://www.lg.com/us/support/product/lg-OLED65C4PUA.AUS

According to the manual for the C4 series it doesn't support setting an ultrawide or super ultrawide aspect ratio on the TV. It does have an option Just Scan which will try to set the TVs aspect ratio based on the video signal being supplied to the TV

Settings > Picture > Aspect Ratio > Just Scan

For this setting to work you'd need to be able to manually set your resolution in your GPU settings and/or Windows display settings.

Lastly, I'd ask if there is a reason you don't want to use the whole display? Your TV is a 16:9 4K display; why do you not want to output at 16:9 4K?

EDIT:
Actually it does have it as a subsection within the Game Optimizer settings

In Settings > Picture > Aspect Ratio change that setting back to Original
Then go to Settings > Picture > Select Mode and choose Game Optimizer
Then go to Settings > Game Optimizer > VRR and enable VRR/Gsync
Then still in the Game Optimizer settings Turn on AMD FreeSync Premium and set the range; most likely want to set this to Wide for 48Hz - 120Hz range
Then go to Settings > Game Optimizer > Picture > Wide Aspect Ratio and set 21:9 (which will be 3840x1600 @ 60Hz, or 2560x1080 VRR; or 32:9 which will be 3840x1080 VRR
Then still in that ettings > Game Optimizer > Picture you can select the Screen Position if you've enabled Wide Aspect Ratio in order to position/move the image to adjust where it is on the display (e.g. where the black bars will be)

Also note that it mentions that you can not use the audio out streaming features like blutooth, etc. when using Game Optimizer so you may also need to change those settings to disable them and set the audio output to either just the TV speakers or just via the HDMI output.
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Showing 1-15 of 20 comments
Pocahawtness 30 Aug @ 2:47am 
You should be able to just select it in the monitor settings using the graphics card software?
#1
Gepards 30 Aug @ 2:51am 
set 3840x1600 and it works fine at 120 hz
#2
Larry 30 Aug @ 3:51am 
I have the Samsung G9 OLED 49" and the option is in the setttings / quick settings menu. If it's OLED(I believe the C4 is OLED) it should allow you to black out the screen so it acts like the appropriate resolution instead of stretching everything. If the resolution is ultrawide by default this should be defaulted?

If you have a report with the monitor try holding down the home button to bring up the options menu.
#3
C1REX 30 Aug @ 4:07am 
Originally posted by Gepards:
Can't find safe guide how to enable ultra wide resolution mode for LG C4 tv (3440x1440) with AMD GPUs (Adrenalin software). Any help would be appreciated.

It's mostly done in TV settings and not on your PC.

Somewhere in TV game settings you should be able to find aspect ratio and pick ultrawide 21:9 and superultrawide 32:9. When you do that the PC will recognise your screen as ultrawide monitor and offer correct resolutions.

I have a samsung TV and it's like two clicks on the main gaming menu where you see FPS, HDR and VRR stats.
#4
Gepards 30 Aug @ 4:33am 
aspect ratio option is grayed out. how to make it active?
#5
Larry 30 Aug @ 4:34am 
Originally posted by Gepards:
aspect ratio option is grayed out. how to make it active?

Check for gaming mode. It might be an option you have to enable in accessibility options.

New screens are weird. They blank out options if other options are enabled...
#6
Gepards 30 Aug @ 4:46am 
i got it active, but there are no 21:9 and 32:9 modes
#7
C1REX 30 Aug @ 5:28am 
Originally posted by Gepards:
aspect ratio option is grayed out. how to make it active?
You may need to activate some other options first like gaming mode, pc mode or extended mode that also activates 120Hz and VRR. I don’t have LG TV so can only guess how it works for you based on my samsung tv. Maybe check some guides online and youtube.
#8
_I_ 30 Aug @ 5:33am 
on tv settings look for pc or game mode, should disable overscan and many image processing features to reduce its input delays and display only what info its given

in gpu control panel, you can always add it as a custom res and test
the ultra wide 4k may be limited by the hdmi ports or cable bandwidth
Last edited by _I_; 30 Aug @ 5:34am
#9
Larry 30 Aug @ 5:34am 
Originally posted by Gepards:
i got it active, but there are no 21:9 and 32:9 modes

There might be a separate options menu for gaming.

I can only tell based on my own setup which is a completely different make and brand - Samsung 49" G9 OLED.

If I have the standard settings open(Home button held) it brings up the basic settings where the Screen Ratio is blacked out. If I open the gaming settings(Hold Play/Pause button) I get the gaming options menu which allows me to switch between 32:9 and 16:9.

I don't think your TV will have 32:9, that's super ultrawide but you should have 21:9 and 16:9?

I'm unsure but I believe it's native resolution is 16:9 but can be made 21:9 via options but you'll likely get black bars when switching from 16:9 to 21:9. I'm sure more monitor/tv buffs will be able to correct the record on this, however.
#10
The author of this thread has indicated that this post answers the original topic.
PopinFRESH 30 Aug @ 5:48am 
https://www.lg.com/us/support/product/lg-OLED65C4PUA.AUS

According to the manual for the C4 series it doesn't support setting an ultrawide or super ultrawide aspect ratio on the TV. It does have an option Just Scan which will try to set the TVs aspect ratio based on the video signal being supplied to the TV

Settings > Picture > Aspect Ratio > Just Scan

For this setting to work you'd need to be able to manually set your resolution in your GPU settings and/or Windows display settings.

Lastly, I'd ask if there is a reason you don't want to use the whole display? Your TV is a 16:9 4K display; why do you not want to output at 16:9 4K?

EDIT:
Actually it does have it as a subsection within the Game Optimizer settings

In Settings > Picture > Aspect Ratio change that setting back to Original
Then go to Settings > Picture > Select Mode and choose Game Optimizer
Then go to Settings > Game Optimizer > VRR and enable VRR/Gsync
Then still in the Game Optimizer settings Turn on AMD FreeSync Premium and set the range; most likely want to set this to Wide for 48Hz - 120Hz range
Then go to Settings > Game Optimizer > Picture > Wide Aspect Ratio and set 21:9 (which will be 3840x1600 @ 60Hz, or 2560x1080 VRR; or 32:9 which will be 3840x1080 VRR
Then still in that ettings > Game Optimizer > Picture you can select the Screen Position if you've enabled Wide Aspect Ratio in order to position/move the image to adjust where it is on the display (e.g. where the black bars will be)

Also note that it mentions that you can not use the audio out streaming features like blutooth, etc. when using Game Optimizer so you may also need to change those settings to disable them and set the audio output to either just the TV speakers or just via the HDMI output.
Last edited by PopinFRESH; 30 Aug @ 6:00am
#11
C1REX 30 Aug @ 6:51am 
Originally posted by PopinFRESH:
Lastly, I'd ask if there is a reason you don't want to use the whole display? Your TV is a 16:9 4K display; why do you not want to output at 16:9 4K?
Not a question directed to me but there are reasons to do it.

- it can make some games easier to run due to lower resolution
- some games are easier to play when you have wider field of view. Many online games block that however and cut some image from top and bottom instead.
- it can be more comfortable if someone has a tiny desk and needs to sit very close.
- curiosity reason - just to see how it looks like.
#12
PopinFRESH 30 Aug @ 7:03am 
Originally posted by C1REX:
...
- it can make some games easier to run due to lower resolution

Irrelevant, you can still just use the GPUs linear scaler if you want to render at a lower resolution

Originally posted by C1REX:
...
- some games are easier to play when you have wider field of view. Many online games block that however and cut some image from top and bottom instead.

They wouldn't be increasing the width of their field of view though; they would be explicitly reducing their vertical field of view.

Originally posted by C1REX:
...
- it can be more comfortable if someone has a tiny desk and needs to sit very close.

If you're using a large 4K TV on a tiny desk and need to sit very close... you made a stupid purchasing decision in buying the TV

Originally posted by C1REX:
...
- curiosity reason - just to see how it looks like.

It'll look like your TV has black bars on the top and bottom edge, just like an anamorphic / cinemascope movie would look like on a 16:9 TV.
#13
wing0zero 30 Aug @ 7:09am 
Originally posted by Gepards:
Can't find safe guide

This leads me to believe you found a dangerous guide :rufusscared:
#14
Meatball 30 Aug @ 7:40am 
Originally posted by PopinFRESH:
Originally posted by C1REX:
...
- it can make some games easier to run due to lower resolution

Irrelevant, you can still just use the GPUs linear scaler if you want to render at a lower resolution

Originally posted by C1REX:
...
- some games are easier to play when you have wider field of view. Many online games block that however and cut some image from top and bottom instead.

They wouldn't be increasing the width of their field of view though; they would be explicitly reducing their vertical field of view.

Originally posted by C1REX:
...
- it can be more comfortable if someone has a tiny desk and needs to sit very close.

If you're using a large 4K TV on a tiny desk and need to sit very close... you made a stupid purchasing decision in buying the TV

Originally posted by C1REX:
...
- curiosity reason - just to see how it looks like.

It'll look like your TV has black bars on the top and bottom edge, just like an anamorphic / cinemascope movie would look like on a 16:9 TV.

This!
It literally makes 0,00% sense to use a 21:9 resolution on a 16:9 monitor. It isn't even a monitor. It's a freaking TV.
Anyway, if you use a 50 inch TV (or bigger) on your desk and sit like 1 meter in front of it , there is seriously something wrong with your setup......(and there might be something wrong with your eyes as well)

In addition to that, the C4 is a horrible TV for gaming. There are a ton of colors missing, huge flickering issues, tearing issues with VRR, sharpness issues, and so on.
Last edited by Meatball; 30 Aug @ 7:44am
#15
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