PC Drivers & Software

[jrm1994]

I'm just about ready to rip all of my hair out, so hopefully you guys can help me. 

I have two Radeon RX 480 graphics cards in my computer (no crossfire), and I've always used two monitors: both HDMI, one plugged into each graphics card. I've never had any issues getting the secondary monitor to connect... until now. I'd fallen behind on updating my drivers (sat at 21.2--something for a while), and to troubleshoot some unrelated issues I was having with a game I was trying to run, I decided to update my drivers to 21.4.1.

Ever since, my secondary monitor will NOT detect.

There's nothing wrong with the monitor or cable itself, as if I plug it into the primary graphics card to test it, it works fine. 

I have...

• rolled back my drivers
• completely uninstalled them
• reinstalled older versions manually
• disabled/reenabled both graphics cards through device manager
• restarted a million times
• completely uninstalled drivers, restarted, unplugged secondary monitor, and plugged it in AFTER reinstalling drivers

I even did a startover on my windows 10 because I was running into issues with windows update not working. Thought that was related, so I reinstalled windows and the driver issue has persisted. 

other things of note:

• The Radeon software DOES detect both graphics cards like normal. Primary is listed as Primary/Master/Discrete, secondary is listed as Linked/Discrete
• When I did my fresh install of windows, both monitors briefly worked just fine until I had to restart my computer after installing the AMD drivers, so it is absolutely a driver issue.
• Sometimes when rolling back/reinstalling drivers, the secondary monitor will flick on briefly during installation (while the screen is doing its normal flickering from updating), but by the time the install is complete, it's back to not detecting.
• Should be obvious by now, but no, hitting Detect in the Windows display settings does not actually detect the secondary monitor. 

Any thoughts?

[mrcastle]

Had the same issue. Go to Radeon Software > Settings > Graphics > Advanced (at the bottom) > AMD Crossfire (disable this). For some reason having AMD Crossfire enabled does not allow you to use two monitors. 

Hope this helps, I was going crazy!!!

[Jrubios]

Hello my friend, i'm curretnly having the same issue as you. 

Did you by any change solved it? 

If you did, how!? T_T

[ynot1cmf]

I don't know if you found an answer to your question or not but I'm still looking for one myself but the only resolve that I could find is a long involved one and it starts with DDU that you can get a GitHub or just Google it and you'll find it and after using that that clears out all of the drivers associated with your GPU and then you can go to the group policy depending on your version of Windows and disable the driver install in there and then you can't just use your old graphics for your motherboard and then it uses windows general purpose display drivers for your second port so you get a VGA of your graphics for your motherboard and then a Microsoft but then you have to keep your drivers from updating which mine are currently wanting to do all the time and so it's kind of not a good atmosphere I don't think and it's not a good fix but it's a way to get around it then I did that and that works and so I just thought I would share if you have any questions feel free to message me directly

[wnicholaslynn]

I have found if you go to the display options in the AMD software (keyboard shortcut is Alt+R), in the top left corner press enable clone, and then once it loads on your keyboard press the Windows + p, and then press extend that worked for me. If you have any questions please ask.   

[Remak11]

I had the same issues after updating the the latest drivers.  

What you have suggested does work, until the screen goes to sleep, I restart the computer, or a program crashes. Then my computer reverts back to one screen and I have to go through the process again of opening up the AMD UI, settings>Display>Clone screen>windows key+P>Extend monitors. A little frustrating. 

Just wondering if anyone else has found a permanent solution to this issue?  Perhaps AMD???

[Xoltrix]

my gpu wont even detect my second monitor. I had a gtx 1660 ti and it worked perfectly. i just got a radeon 6750 xt and its been nothing but problems. it won't even detect my second monitor. I've tried everything everyone has mentioned above and nothing has helped. the screen just always says no input and my computer doesn't even detect it anymore.

[Queiffen]

Hoping to god you found a solution and see this 2 years later, I upgraded from and to literally the same GPUs as you, and its the same deal with only 1 monitor working me being my 2nd so if you ended up fixing I would like to know to stop this endless search for an answer

[mvprip]

Hey, did you manage to find a solution ? Going crazy over here ... 

[sandypopalamo]

Hey Remak11, I have the exact same issue that started this week… did you find another than the workaround to be able to keep the extend display setting on?

[id3ntty]

This was what I needed!! Hours of headaches solved thank you!

[armirol]

I have 3x 4k monitors and suddenly, this happened to me. Apparently, there is an easy fix, if you have the latest driver:

Open adrenaline, select graphics  > advanced > reset shader cache (restart? i can't remember if i had to do it)

But things went back to normal... it is a corruption of shaders data into the VRAM that can cause the issue.

I hope it'll help, Good luck!

[AliArtemis]

Thank you, this was driving me insane. Crazy that it corrupted the shaders on install of the driver

[eefizzle]

Hey! You've either probably fixed this issue, or hopped ship to another brand, but it never hurts to leave this comment for someone who has the same issues as me. My issue was having 2 monitors plugged in, display options NEVER WORKING, but then they would stretch res across both screens. AND TODAY I HAVE FIXED THAT ISSUE! 

Update your stuff through the Radeon program, reset shader cashes, THEN RESET. Once that is all done, make SURE you're in the correct aspect ratio like 1080x whatever you use for your main monitor. 

Now, here comes the fun part. Take yourself into the gaming tab, hit Display; at the bottom you SHOULD see eyefinity. Quick set up, make both monitors appear by brute force (its what i did) THEN DELETE THE SETUP. both monitors smartened up, I JUST FIXED THIS AS OF 5 MINUTES AGO. 

I hope this helps someone.

[AtomicOrange]

Thank you!! I use an Elgato 4k60 pro as my second monitor and launching Valorant bugged out and then left my Elgato completely undetectable. Primary monitor was fine. What specifically helped was resetting the shader caches. I had already tried the eyefinity with no success, but then tried again after finding this post. Works now like it always did! any AMD elgato users having a no signal issue on a PC to PC setup, try the above.