I seem to be having a problem with AMD drivers and getting the actual
resolution to change on at least one machine. It's basically like the GPU Scaling function is NOT turning off, even when you have it off as the dropdown box for "Centered, Maintain Aspect, etc." still works even when scaling is off.
More importantly the resolution sent to the TV is not changing
. So for example, on a 4K TV, set as 3840*2160 works fine. However choosing any other standard
resolution that is easily accepted by the TV like 1920x1080 (1080p) or 1280x720 (720p) doesn't actually work. What it does is it keeps sending a 3840*2160 signal to the TV and just sets the PC's [internal] resolution to what is selected.
If you have the scaling option set to "centred" it will just have a small window centred in the screen (1/4 the size, for 1080p for example). Setting to "Maintain Aspect" or "Full Panel" scales it up to the full screen size but it's not actually changing the resolution. This occurs regardless of the scaling option being on or off--i.e. it's scaling no matter what.
This all started happening after changing out a PC (lets call it #1
) with an older R9 280 to a newer one (#2) with an RX 580. I believe it was working fine at first even changing the PC and GPU connected but I think this is a more recent driver issue? I upgraded the card to an RX 5700 and now with the latest drivers this problem appears. But it doesn't end there...
The same RX 580 I put in the older PC (#1
) and connected it elsewhere, to a different 4K TV. It has the same problem! When changing resolution the TV still gets a 4K signal and toggling the scaling option does nothing except blank the screen for a second almost like it's "pretending" to work LOL.
I read about the issue a bit online and it seems various people have had the issue with various driver versions, but there's no definite solution. Has anyone here encountered this and solved it?
On PC#2 with the 5700, no matter what I try to change or fiddle with I cannot fix the issue, it's insisting on always
sending the TV a 4K/60p signal regardless of changing resolutions, refresh rates, trying custom res., registry settings, and the list goes on. Tried factory resetting the options and updating the driver once more but problem remains. Next will be doing a DDU and going from there.
, now with the 580 in it, I was able to use the "trick" on the internet that you need to change the resolution and the refresh rate (and then the refresh can be changed back again) and that works! However it doesn't work on PC#2--that just does nothing except blank the screen a second and TV still gets 4K/60p though Windows is internally actually refreshing at whatever rate you select
I don't get it? Anyone know why this happens or how to solve it? I also have a #3
with an RX 570 and that one used to work fine but TBH I haven't tried resolution switching on that one since updating drivers. Any advice would be appreciated!