USB port in back of monitor causing graphics lag

[TheLostSwede]

No, you mislead me with mentioning possibility of type B as display input. In general type B is rarely used in displays, most of the time it is just regular type A. Again, actually it is first time i hear about type B on a monitor, i googled now and i see mention of such monitors using type B on their hubs. I'm aware most of the time usb on displays are just hubs and in this case i also assumed it is a hub port and was still wondering if it would be type B as i've never before seen type B connection on a monitor.

Sorry, that was not my intention.

It's used on almost all monitors that has a USB hub built in. I've had four or five so far.
USB-C is still much more rare.
I guess it's a more "premium" feature, hence why some people haven't seen it.

 

[Bill_Bright]

USB-C is still much more rare.

True but it is getting more and more popular because more and more notebooks these days are coming with USB-C. And those often are then used for the purpose of connecting an external monitor to the notebook (instead of - or maybe in addition to HDMI or DisplayPort). So those USB-C connections are used to feed the notebook's video output to the input of the monitor - instead of using those USB-C connectors on the monitor to send I/0 (mouse and keyboard) inputs back to the computer. I would imagine that makes for a pretty complex driver - and lots of hiding places for bugs - coding bugs.

 

[Assimilator]

True but it is getting more and more popular because more and more notebooks these days are coming with USB-C. And those often are then used for the purpose of connecting an external monitor to the notebook (instead of - or maybe in addition to HDMI or DisplayPort). So those USB-C connections are used to feed the notebook's video output to the input of the monitor - instead of using those USB-C connectors on the monitor to send I/0 (mouse and keyboard) inputs back to the computer. I would imagine that makes for a pretty complex driver - and lots of hiding places for bugs - coding bugs.

Unfortunately a lot of the USB-C connectors don't support DisplayPort, especially on lower-end models where a couple of cents off the BoM makes all the difference.

 

[Bill_Bright]

True. But like all new technologies and enhancements, they eventually make it down to the entry levels - especially when those couple of cents do matter - as they eventually will here. As soon as USB-C achieves widespread use, manufacturers will realize they can save a few cents by eliminating HDMI ports and the associated circuitry. That's a big reason DVI ports have almost completely disappeared - it made no sense to support two digital graphics ports when HDMI did the same, and more.

And for the record, it is not just the cost of the extra parts, it is all the resources and logistics involved in design, manufacturing, transportation, inventory and more to support that interface - where both ends of the cable connect and the cable too.

What I find ironic (and frustrating) is how all these "universal" serial bus connectors and interfaces are not compatible with each other.

 

[Assimilator]

True. But like all new technologies and enhancements, they eventually make it down to the entry levels - especially when those couple of cents do matter - as they eventually will here. As soon as USB-C achieves widespread use, manufacturers will realize they can save a few cents by eliminating HDMI ports and the associated circuitry. That's a big reason DVI ports have almost completely disappeared - it made no sense to support two digital graphics ports when HDMI did the same, and more.

Sadly I doubt we'll see the end of HDMI anytime soon, since every bloody TV in existence supports it.

And for the record, it is not just the cost of the extra parts, it is all the resources and logistics involved in design, manufacturing, transportation, inventory and more to support that interface - where both ends of the cable connect and the cable too.

Fair.

What I find ironic (and frustrating) is how all these "universal" serial bus connectors and interfaces are not compatible with each other.

Universal in marketing speak is different to universal in reality

I think that overall, USB has done pretty well. You get the odd broken firmware or crappy implementations (like this case) where it doesn't work properly, but overall it does the job without any pain. The whole dilution of USB with the "Gen 1" and "Gen 2" and now the C connector that may or may not support display, and/or power delivery, and/or god knows what else they'll add with USB 4 (if they even call it 4, instead of something stupid like "USBFOUR"). Yeah, having a mess of a dozen different ports on your machine is a pain, but having a mess of a dozen identical ports, each with different capabilities, is far worse...

 

[Bill_Bright]

Sadly I doubt we'll see the end of HDMI anytime soon, since every bloody TV in existence supports it.

No doubt it will take awhile to phase out. Legacy interfaces always do. It is not hard to still find DVI or even D-Sub on monitors and some graphics cards. PS/2 connectors are still around. At least AGP is history!

Universal in marketing speak is different to universal in reality

LOL Apparently so.

I think that overall, USB has done pretty well. You get the odd broken firmware or crappy implementations (like this case) where it doesn't work properly, but overall it does the job without any pain.

I'm afraid I don't have the same opinion. I feel USB has been plagued with issues, almost since Day 1. When it works, it works. But forums are full of threads about USB devices losing connection, failing to be recognized and more. I wish I could blame it all on manufacturers cutting corners by using poor quality parts - and certainly that is the case in many instances. But that is not always the case. As an example, we see name brand devices, like WD external drives failing to work with ASUS motherboards, but work fine with Gigabyte boards. USB keyboards failing to work in BIOS Setup Menus. You name the scenario and there are more than just the odd example of problems.

And certainly the code must share some of the blame too - the USB code itself, as well as specific drivers for those USB devices. I think USB shares the same problems most "universal" devices that do (or try to do) too many things. They end up doing many things "adequately" but nothing particularly well. A "jack of all trades, master of none".

I certainly do NOT want to go back to unique interfaces, cables and connectors for every type of device. But USB has been around for nearly 25 years now. IMO, it is time for it to start living up to its original marketing hype of being a truly universal, reliable, forwards and backward compatible, serial interface.

 

[95Viper]

Let's get back on the topic and the OPs problem... not a general discussion of USB implementations/uses.

Thank You.

 

[Bill_Bright]

My bad. Sorry Easy Rhino.

 

[Easy Rhino]

Okay, so I unplugged the USB 3 cable from the back of the desktop and plugged it back in. Magically the problem is gone. I have a feeling it will happen again though. it wasn't frame drop, it was input lag. Like the monitor sync could not keep up with the graphics card. As if freesync was broken.

 

[basco]

Mr. Rhino could you tell us if ya are on the newer V2 firmware?

 

[Easy Rhino]

Mr. Rhino could you tell us if ya are on the newer V2 firmware?

How can I tell?

 

[basco]

monitor : settings-general-information

There's no easy way to identify which firmware version you're on, only to test whether you are on the latest. The OnScreen Control software was a little confusing when it came to identifying things.

LG released a new firmware for this screen in early 2019 so if yours is newer it should come with newest installed

go there and then to Software \ new and look at pics and please read the complete section

LG 34GK950F review - TFTCentral

34" ultrawide screen from LG. With 144Hz native refresh rate, new Nano IPS panel, wide gamut support and AMD FreeSync

www.tftcentral.co.uk

quote from ocn:
If you download the LG On Screen control app and have it connected via USB, it should prompt you for an update when launching the app.

Product Support - Support & Help | LG UK

Find support related to your products. Get LG help & customer support with our range of user guides, video tutorials, software downloads and more.

www.lg.com

[Windows] OnScreen Control - version 4.78