AMD Radeon(TM) RX Vega 11 Graphics Primary/Integrated

[JoolsM]

I hope I've put this post in the correct forum. If not, please will mods move it to correct one.
I've got one of these on my new system which is on a AMD Ryzen5 3400G
I have an AOC X24P1 monitor which should run at a resolution of 1920x1200.
But it won't.
I've updated the Radeon drivers.
The system says the device drivers are the most up to date ones for the monitor.
The Radeon software won't let me create a custom resolution and defaults back to 1920x1080.
I've not made any progress on a solution by googling, so doing the sensible thing and asking on here.
I have the same monitor on my work computer and that installed on the work computer no problem, but not this new one at home.
Please can anyone suggest how I can get my resolution to 1920x1200?
Thanks.

 

[Caring1]

How is the monitor connected to the computer?
DVI, HDMI, Display Port?

 

[JoolsM]

VGA because that's the only cable I have.

 

[Tatty_Two]

It appears that this problem is often down to the cable, either the length of the cable (signal loss) or the quality of the cable, some cheaper cables lack EDID (Extended Display Identification Data) which basically inform the data source (graphics card) what the monitors capabilities are.

Extended Display Identification Data - Wikipedia

en.wikipedia.org

.

 

[Aquinus]

VGA because that's the only cable I have.

Cables are cheap, get one that uses a digital signal, like HDMI or DisplayPort. VGA is an archaic technology and it doesn't surprise me at all that it doesn't quite work right.

It appears that this problem is often down to the cable, either the length of the cable (signal loss) or the quality of the cable, some cheaper cables lack EDID (Extended Display Identification Data) which basically inform the data source (graphics card) what the monitors capabilities are.

Extended Display Identification Data - Wikipedia

en.wikipedia.org

.

My experience with displays that don't send EDID info over VGA is that you won't even get to 1920x1080. You'd be stuck at something like 1024x768.

 

[JoolsM]

Thanks all - just double checked the specs on the mobo of this new machine. It's an Asus Prime B450M-K and according to the spec is has
Multi-VGA output support : DVI-D/D-Sub ports
- Supports DVI-D with max. resolution 1920 x 1200 @ 60 Hz
- Supports D-sub with max. resolution 1920 x 1200 @ 60 Hz

So at least I'm not trying to make it do something it isn't designed for. I've had the VGA cable I'm using for a long time. Perhaps time to invest in a DVI one and see if that solves the problem

 

[Caring1]

I've had the VGA cable I'm using for a long time. Perhaps time to invest in a DVI one and see if that solves the problem

That's why I queried the method of connection, I sometimes use a TV Monitor for testing purposes and with a VGA cable it is limited in resolution and won't reach it's native resolution setting, similar to the issue you have.

 

[Aquinus]

Perhaps time to invest in a DVI one and see if that solves the problem

That's what I would do.

 

[JoolsM]

I have 2 computers networked so use a KVM switch - it's a Trendnet TK209k so I've Just ordered an Active DVI to VGA, YIWENTEC DVI 24+1 DVI-D M to VGA Male With Chip Flat Cable Adapter Converter for PC DVD Monitor HDTV 2M (Black) . If that solves the problem that will be good. Failing that I'll have to look at changing the KVM switch to cope with DVI connections and then get a straight DVI cable. Will let you know how I get on. Thanks for your help. Jools

 

[JoolsM]

UPDATE The Active DVI to VGA cable has arrived. It works fine if I go direct from computer to monitor. But I can't use it with my existing KVM switch because while I can get a picture, the usb cable runs beside the video cable and they both go into the VGA port on the switch. So while the video works, the usb stuff (mouse and keyboard) don't. Bother So it's try and connect VGA male on KVM cable to VGA male on DVI to VGA cable (sure I have a female to female VGA connector somewhere in my box of computer/radio stuff) OR change KVM switch. Typical computers - nothing's ever simple.

 

[JoolsM]

And putting the female to female VGA connector in hasn't solved the problem. So now to look at changing the KVM switch.