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AMD Issue Dual Monitor

leekeene

leekeene

leekeene

Associate
Joined
13 Aug 2015
Posts
152
Hello

sorry for a mega long post but i have come across an issues and its driving me up the wall.

my PC Spec

4790k OC to 4.8ghz
Powercolor R9 390
Gigabyte Z97X-UD3H-BK mobo
32gb ram


i bought my PC to play racing sims and for a year it was great.. but i have now decided that i want to try and play other games on my machine.

my first monitor is quiet old and only has a DVI input so i needed a switch to flick between my PS4 or PC. i fitted a DVI to HDMI block and then ran a 3 way HDMI Splitter. i then used the HDMI out of the R9 390 and the PS4 to the HDMI Splitter. this worked great.

i have now added a second monitor on my desk. on my R9 390 i have spare 2 x DVI and 1 x Display Port. i plugged in to 1 of the spare DVI ports to the monitor and now im getting all sorts of weird and wonderful things happen

Issue 1 - 2D screen flicker. Appears to go away after a while. looking online appears to be an issue with the AMD Driver. the issue appears to be fixed with a small OC to the 2d Volts or something. which leads me to issue 2

Issue 2 - the AMD overclocking worked great on 1 monitor but now things appear to be not working. i clocked my memory from 1500 to 1595 on single monitor and you can see the graphics card on HWinfo and the AMD graphical view flicker between 150 and 1595 mhz. as soon as i install the second monitor i get no OC ability what so ever... so what ever it was before remains and locks in at that speed. so if i install the monitor at 150mhz its locks at 150mhz so runs like a dog. if i lock it at 1595 mhz it works great but now the temps are hitting 60 degrees constant. also for some reason HWinfo has a fit and volts stop showing on the GPU and Memory clock speed isnt being tracked and a few others are acting weird.

the only work around i seem to have is re-enable the onboard Intel GPU and run the second HDMI out of that. the R9 390 then does it thing as expected. and as long as i have the r9 390 as my primary monitor even if i present on the intel hdmi port the r9 390 is still doing the work and im getting solid 60fps...... i then open Gopro Studio and now that doesnt work as the intel gpu doesnt run OpenGL correctly!!!! FML!!!!

am i best to just torch my system? is there a fix for this?

cheers
Lee
 
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What happens when you take out the 3 way hdmi splitter.

What is being presented on the igpu monitor and getting solid 60fps? Do you mean software being computed on the r9 390.

Can you not specify in the GoPro application to use the r9 390?

Check in bios to see which GPU is set as primary, igpu or pci-e.
 
eddyr said:
What happens when you take out the 3 way hdmi splitter.

What is being presented on the igpu monitor and getting solid 60fps? Do you mean software being computed on the r9 390.

Can you not specify in the GoPro application to use the r9 390?

Check in bios to see which GPU is set as primary, igpu or pci-e.
Click to expand...

i normally disable the iGPU so only the PCI is active.

i cant specifiy which one GoPro uses.

yea so i have my r9 390 as my primary that seems to do all the working and i can put the game on the igpu and still get 60fps as the r9 390 is doing the leg work.

i am wondering if its the HDMI to splitter to DVI. might try straight to DVI
 
As suggested above try a straight connection to both monitors.

Maybe even use DDU and do a fresh install of GPU drivers while both monitors are connected.
 
leekeene said:
i normally disable the iGPU so only the PCI is active.

i cant specifiy which one GoPro uses.

yea so i have my r9 390 as my primary that seems to do all the working and i can put the game on the igpu and still get 60fps as the r9 390 is doing the leg work.

i am wondering if its the HDMI to splitter to DVI. might try straight to DVI
Click to expand...

On your Issue2 what happens if you don't OC memory?
Or is that OC you were referring to as the solution to Issue1 (flickering as per the youtube video linked)?

Also have you tried plugging in the second monitor into the other available DVI port?

Going back to your current workaround whcih prevents you using GoPro: It might be worth giving a check in the bios to see which is set to primary adapter when both igpu and pci-e graphics are enabled . Longshot should GoPro be defaulting to the igpu as result of that. Also check intel igpu application if any relevant settings can be changed there.
 
Last edited:
eddyr said:
On your Issue2 what happens if you don't OC memory?
Or is that OC you were referring to as the solution to Issue1 (flickering as per the youtube video linked)?

Also have you tried plugging in the second monitor into the other available DVI port?

Going back to your current workaround whcih prevents you using GoPro: It might be worth giving a check in the bios to see which is set to primary adapter when both igpu and pci-e graphics are enabled . Longshot should GoPro be defaulting to the igpu as result of that. Also check intel igpu application if any relevant settings can be changed there.
Click to expand...

I overclocked the GPU core 6% and then upped the Memory from 1500mhz to 1595mhz.

doing this makes no difference to the Core Volts which need to be tweaked to stable the card. the problem is i am using the built in Wattman app on AMD and Volts are only working on 400 series.

i tried afterburner and i could get the screens to stop flickering but as mentioned the Memory frequency locks up. usually at 1595mhz which in turn makes the card run hot. 60 degress instead of 38 normal.

as for Gopro i did some digging so if i open it on the R9390 screen it works and then if i open it on the igpu it doesnt so it looks like i need to do all my video editing on my gaming rig lol.

what a nightmare!!!

1080 might be on order soon
 
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