I have been using High Sierra on my Mac Pro 2012 (mid 2012 5,1) with XFX Radeon RX580 with dual screens for well over a year or 2. Had to update to Mojave (for Protools 2021 and the new RX9 requirements, hate updating, but had no choice to get these 2 to work). So I cloned my Main Mac HD SSD to a another HD and then updated the HD SSD to the latest Mojave 10.14.6 and now the DVI out doesn't work. But when I have the boot drive set to the clone which still has HS and the DVI out it works as before, but when I set it to the SSD with Mojave I can't get a signal out of the DVI. I reset the PRAM, and unplugged the mac and held the power button for 1 min to clear out any issues and still nothing.
Tried calling apple tech support and AMD to no avail. I am assuming it's a driver issue? (each one says call the other and it's not their issue). The DP and HDMI work fine in both Mac OS. I'm using the DVI out to a KVM switcher for multiple computers/monitors, so need the DVI out.
I bought a 6' DP to DVi, HDMI to DVI, 7' active DP to DVI to no avail.
After calling around, Melrose Mac (my all time trusted place for service) tech mentioned to connect the DVI from the card straight to the monitor (right now it's feeding into a KVM DVI) and I got a signal, just colorful snow. Told me to unplug the DVI and replug it again. And got the screen to work, but it was wonky so had to take it from the 75Hz to a VERY weird option of 59.88HZ and it worked. So thought it was a handshake issue that both are talking to each other now.
So then plugged the DVI from the RX back into the KVM and walla, it worked.
But then when I restarted nothing works now. So back to square one.
Could be a HDCP issue
Is anyone else using the DVI on the RX 580 on Mojave 10.14.6?
Any help would be appreciated
Thanks
Tried calling apple tech support and AMD to no avail. I am assuming it's a driver issue? (each one says call the other and it's not their issue). The DP and HDMI work fine in both Mac OS. I'm using the DVI out to a KVM switcher for multiple computers/monitors, so need the DVI out.
I bought a 6' DP to DVi, HDMI to DVI, 7' active DP to DVI to no avail.
After calling around, Melrose Mac (my all time trusted place for service) tech mentioned to connect the DVI from the card straight to the monitor (right now it's feeding into a KVM DVI) and I got a signal, just colorful snow. Told me to unplug the DVI and replug it again. And got the screen to work, but it was wonky so had to take it from the 75Hz to a VERY weird option of 59.88HZ and it worked. So thought it was a handshake issue that both are talking to each other now.
So then plugged the DVI from the RX back into the KVM and walla, it worked.
But then when I restarted nothing works now. So back to square one.
Could be a HDCP issue
Is anyone else using the DVI on the RX 580 on Mojave 10.14.6?
Any help would be appreciated
Thanks