LG 48CX

I would of expected that Nvidia and LG would have the equipment to properly test it.

VRR is difficult to test without real devices. I'm sure they tested with a 4k120 device that was output at a steady rate, but actual testing of VRR really needs variable rate output, which essentially required a GPU.
 
I suppose no one is running three of these like me for multi monitor, eh? When I wake from PC deep sleep, my screens have either no signal or only one shows the desktop, and I have to restart.

Hope LG finds and monitors this thread...
 
I suppose no one is running three of these like me for multi monitor, eh? When I wake from PC deep sleep, my screens have either no signal or only one shows the desktop, and I have to restart.

Hope LG finds and monitors this thread...

Your set up looks sick mate, was looking at it before I signed up here. Do you find yourself updating hardware regularly?
 
I suppose no one is running three of these like me for multi monitor, eh? When I wake from PC deep sleep, my screens have either no signal or only one shows the desktop, and I have to restart.

Hope LG finds and monitors this thread...

I replied several replies ago about my two 4k 60hz samsung VA's running off of displayport to hdmi adapters. I think that it might be a hdmi handshaking issue. My third monitor is a 1440p VA with 144hz g-sync running directly off displayport to displayport and it never has any issues. However one or the other of the 4k ones(never both) occasionally blinks a few times when waking up from standby. Rarely, one or the other will have no signal at all and I'll have to unplug their hdmi cable from the dp adapter and snap it back in. That doesn't happen that often though. Once they are all initialized properly, they have zero problems.

I just swapped one of my two 4k monitors to the hdmi out port on my gpu so that now only one display is on an adapter. I'll report back eventually on how that one works on wakeup over time. Does your monitor that is hdmi to hdmi exhibit the same behavior or is is only the displayport to hdmi adapter ones?
 
Your set up looks sick mate, was looking at it before I signed up here. Do you find yourself updating hardware regularly?
Thanks! I went 3 years with MB CPU and RAM before upgrading all this past spring. I am running on two 4 year old Pascal Titans. They have always juuuust been enough or close for triple 4k. But now I really need the new 3090. That performance and 24 gb of VRAM is crucial for me.
 
The guy of LG support doesn't know about he is talking...
I have a 2080ti and LG 55CX and at 120 hertz and gsync [on] with 4.2.2 it works... No tearing at all but no HDR
I am very confused actually because i pre order a 3080 and if it is true that we can't do full chroma with Gsync at 4k 120 it will be very disapointing....
I also notice that on ubisoft game the HDR is not the same like in forza game.
 
elvn - Once again you always have great feedback and help a ton. Thanks for your input and looking forward to hearing more.
 
omer care this time, just posted to reddit by someone, this isn't looking good

To be fair, most customer care guys wouldn't know a thing about HDMI specs and whatnot. It would be odd that 4k120 HDR would be explicitly not supported if there's enough bandwidth to support it (there is). And I'm pretty sure some people here who have the DP->HDMI adaptor had it working.

At this point, I honestly might just wait for the C11 series to come out, since they'll likely be out by the time most of the issues get ironed out.
 
Another response from UK customer care this time, just posted to reddit by someone, this isn't looking goodView attachment 281921

Just to pile on, this is obviously false with any research at all... Those of us that actually have the TV (and a Turing card) have been using 120hz VRR with it since the day we bought it. There's no need for all the silly doom and gloom. No adapter is needed (in fact VRR DOES NOT work with the adapter). 4k 120hz 4:2:0 VRR works out of the box with an HDMI 2.0 cable.
 
Yea I think the doom and gloom about 4:4:4 120Hz and G-Sync is a little unnecessary. New technology, some bugs are to be expected - LG said they're working on it at least. There's virtually no good reason why the issues can't be fixed and LG is going to lose out bigly if they don't fix it ASAP.
 
Yea I think the doom and gloom about 4:4:4 120Hz and G-Sync is a little unnecessary. New technology, some bugs are to be expected - LG said they're working on it at least. There's virtually no good reason why the issues can't be fixed and LG is going to lose out bigly if they don't fix it ASAP.

Some people will take any excuse to crap on this display lol.
 
Yea even with those issues I'd still stick with this display any day.

For single player stuff I am fine with 60hz g-sync on many games for example (and that's already working with HDR and RGB). For competitive multiplayer stuff, yeah I'll absolutely want 120hz+ but I usually reduce some settings so VRR isn't even that critical if I'm playing with 200fps or whatever (I do prefer having VRR 100% of the time but we live in a world of compromises for now).
 
Just to recap here from my own testing with the Club3D adapter and CX 48:
  • 4K 120 Hz SDR 8 and 10 bit works but downsampled to 4:2:2.
  • 4K 120 HDR 8 and 10-bit works but there is something slightly off about color compared to 4K 60 Hz HDR but not clear 4:2:2 chroma subsampling.
  • 1080p 120 Hz SDR and HDR behave exactly like 4K 120 Hz even with a HDMI 2.0 source.
  • 1440p 120 Hz SDR and HDR have zero issues on adapter or HDMI 2.0.
  • 4K 120 Hz G-Sync/VRR works at 8-bit 4:2:0 SDR over HDMI 2.0.
  • 4K 120 Hz G-Sync/VRR 4:4:4 SDR/HDR is still a mystery as bug fixes are needed.
To me the LG reps quoted in those screencaps just don’t know what they are talking about or refer specifically to VRR with 4K 120 Hz.

Let’s wait a few weeks for fixes before making judgement. The TV clearly accepts 4K 120 Hz RGB 10-bit signal without issue (until processing it internally) and reports that it is actually doing so. 12-bit signal does not work as expected.
 
elvn - Once again you always have great feedback and help a ton. Thanks for your input and looking forward to hearing more.
Does your monitor that is hdmi to hdmi exhibit the same behavior or is is only the displayport to hdmi adapter ones?

No problem.
Let me know if all three of your monitors have lost signal or hdmi handshaking issues if you can. I'm curious if it is the displayport adapters having failed hdmi handshaking and if your TV that is on hdmi 2.1 out to hdmi 2.1 in without using any adapter is unaffected.

Did you say sometimes all three of your screens have no signal, including the hdmi to hdmi one?

When you said sometimes only one shows the desktop, is that "one" the tv that is connected hdmi to hdmi without any adapter?

--------------------------------

Screens not coming on from standby has been an issue for some hardware for years, and it can happen on displayport screens as well as hdmi ones.

Though not optimal, you could set up a deep black or the blank option screen screen saver instead of putting the TVs into standby. It could affect the lifespan (and energy consumption), and of course hours on/used is even more important with OLEDs - but maybe all black, especially on an OLED where it wouldn't have a LCD backlight still on, would be a work-able solution. I'm even considering it on my VA LCDs though it could affect the backlight's lifespan a bit.
 
Man I want to pull the trigger on a 48CX, but worried that next years model will do the above 4:4:4, 4k, 120hz. this will be a work monitor and gaming like MS Flight sim. FPS shooters will still be on a 240hz 24".
 
Man I want to pull the trigger on a 48CX, but worried that next years model will do the above 4:4:4, 4k, 120hz. this will be a work monitor and gaming like MS Flight sim. FPS shooters will still be on a 240hz 24".
I’m getting a CX48 only for FS and P3D and I guarantee you’ll never have those issues because even with a 3090 you’ll never be above 60FPS at 4K so RGB 60hz will be juuuuust fine.
 
I've been eyeballing the 48CX for a while now - (coming from an 43" Philips Momentum and a 2070 Super).

I'll be waiting for Big Navi to see what the market has in store as 3080 availability is basically non-existent, but I wouldn't mind upgrading my monitor in the meantime as I could get a fair deal (1200 EUR incl. shipping amd taxes) for the 48CX.

However I've got a few questions that maybe some guys here could answer:

1) are the issues the same on FreeSync (and/or "G-Sync compatible"?
2) has anyone tried what's possible using the CRU tool? I was able to get the 43" Momentum working in a 32Hz-63Hz VRR/Freesync range (48Hz-60Hz advertised)
3) I don't usually play current-gen AAA blockbusters so I'm eyeballing 120Hz 4K with G-Sync/FreeSync/"G-Sync compatible" on for now and later either RDNA2 or Ampere for 4K 120Hz HDR 10bit - are there ANY other OLED displays in the 50" ballpark on the horizon?
4) 120Hz BFI in games with G-Sync on - possible?

Sorry for all the questions, but I need an upgrade/investment for the next few years. I can justify holding onto the Philips screen for a while longer (got it for sub 500 shortly after launch, so I can live with it becoming completely worthless in a few months) - but I also don't want to miss out on the deal for 1200 here in Europe for the CX..
 
Man I want to pull the trigger on a 48CX, but worried that next years model will do the above 4:4:4, 4k, 120hz. this will be a work monitor and gaming like MS Flight sim. FPS shooters will still be on a 240hz 24".
Wait for firmware fixes and Black Friday sales.
 
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November historically has some flash in the pan TV sales. Most likely because they are liquidating stock for next year models, kind of like car dealers do with cars. They also cash in on the holiday spending season purse by luring people to buy from them with price cuts instead of at retail price from someone else.

Last year there were some decent LG C9 sales in novmber, with at least a few hundred dollars off or more. Covid-19 and the supply chain, economic factors related to covid-19, etc could affect things this year one way or another though so there is some uncertainty but it will probably be a similar cycle of TV sale prices overall.
 
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I wouldn't count on getting a deal on a CX this Nov., maybe a C9. The demand is too high for the CX, especially the 48", and prices refelect the low inflation rates already. Liquidation of C9 stock will likely be the only contributor to good deals.
 
Just pre-ordered a 48 cx at best-buy Canada... I thought the 48 was not going to be released in Canada and will see if my order goes through.
 
I wouldn't count on getting a deal on a CX this Nov., maybe a C9. The demand is too high for the CX, especially the 48", and prices refelect the low inflation rates already. Liquidation of C9 stock will likely be the only contributor to good deals.

If not a 48 CX, I'd take a 55 inch CX, C9 or E9 if the price was right (and the firmware fixes satisfactory by then).
 
I suppose no one is running three of these like me for multi monitor, eh? When I wake from PC deep sleep, my screens have either no signal or only one shows the desktop, and I have to restart.

Hope LG finds and monitors this thread...

Use at your own risk. I don't know if resetting display adapter over and over would cumulatively have any negative effect.

SHIFT + CTRL + WIN key + B

this resets the display adapter which blanks the screens once and makes a system beep on the motherboard speaker

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He's complaining about his particular LG pc monitors but this issue can happen to a lot of displays from various manufacturers including displayport connected ones.
 
We can't even buy these in Canada short of a few pre-orders, I highly highly doubt that the 48 will ever go on sale on Black Friday or other ... Seems like LG is selling every unit they make so why would they discount it ?
 
We can't even buy these in Canada short of a few pre-orders, I highly highly doubt that the 48 will ever go on sale on Black Friday or other ... Seems like LG is selling every unit they make so why would they discount it ?
High TVs never go on sale on BF. Deals on high end TVs come out before the new models start to ship. BF are for cheap garbage TVs.
 
VRR is difficult to test without real devices. I'm sure they tested with a 4k120 device that was output at a steady rate, but actual testing of VRR really needs variable rate output, which essentially required a GPU.

Yeah, I partly blame the glacial adoption rate of this feature in gpus. They have to find a way to implement new connectors at a faster pace, I get they need lead time to secure the proper chips and decoders, but there has to be a way to strap on some generalized hardware that can get the job done and meet the spec without waiting 3 years after hdmi 2.1 is announced before we see capable hardware.
 
Is the LG CX capable of doing ultrawide resolutions at above 60hz (ex. 120 hz) with an HDMI 2.1 gpu like the 3080? 3840x1600 @ 120HZ is what I'm interested in.
 
Interesting tidbit: he did not measure increased input lag at 4k 120hz like Rtings did, he found the same value as 1080p/1440p 120hz: 6-7ms (which for the record is an absolutely fantastic number when combined with OLED's instant pixel response times)
 
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I suppose no one is running three of these like me for multi monitor, eh? When I wake from PC deep sleep, my screens have either no signal or only one shows the desktop, and I have to restart.

Hope LG finds and monitors this thread...

Are you using the Club3D DP adapters with these? Make sure you are running the latest firmware as it fixes a lot of issues like these. The latest I know of is v1.03.
 
Has anyone had time to experiment with 120Hz BFI? How well it play along with G-Sync/HDR/..?

I would not use it with HDR. It dims highlights way too much. But on SDR it works great. I have mainly tested it on Doom Eternal as that can actually run at 100-120 fps at 4K. With the Medium or Auto settings you do get clearer motion.

VRR does not work together with BFI.
 
Are you using the Club3D DP adapters with these? Make sure you are running the latest firmware as it fixes a lot of issues like these. The latest I know of is v1.03.

I am using the Club 3d adapters, yes. Where do I get the latest firmware?
 
Use at your own risk. I don't know if resetting display adapter over and over would cumulatively have any negative effect.

SHIFT + CTRL + WIN key + B

this resets the display adapter which blanks the screens once and makes a system beep on the motherboard speaker

View attachment 282157

He's complaining about his particular LG pc monitors but this issue can happen to a lot of displays from various manufacturers including displayport connected ones.

Thanks elvn! Let me get back to the computers today and I will report on waking between DP and HDMI...

EDIT:
- just went to my rig and turned on the TV's before waking the PC - and the screens all showed the desktop properly. I will update here again later when I try the reverse of that.
- just noticed my wake procedure ends up in dimmed side TVs. I have to use elvn 's procedure for resetting the adapters with the shortcut: SHIFT-CTL-WinKey-B
 
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