I said I'd follow up, so if anyone cares or has followed my posts, the fix for my WMC fullscreen issue was resolved with a DP to HDMI cable. It hasn't even been a full day, so not 100% sure, but before the cable swap I could not do WMC full screen with 4k 60hz (only 30hz). Now, I can.godman114 wrote: ↑Mon Mar 09, 2020 2:18 pmJust an update for you guys. I struggled a lot with this new mini PC (Lenovo ThinkCentre M75q-1), but finally have it working with one caveat. When I run WMC maximized on my 65" 4K, the screen goes out every few seconds, then comes back, and repeats. I have a strong feeling it's either the HDMI cable, or the refresh rate from WMC not matching up with my 4K monitor. At first, the issue was that everything in WMC looked like crap (choppy), and I realized it was the fact that when I set up 4K resolution in Windows, it defaulted to 30hz (eww). Setting it to 59hz or 60hz in Windows makes everything look smooth again.
I went through the WMC display set up and tried 59.94hz setting and 60hz setting... still struggling to get this to work. If I run WMC in windowed mode, I have absolutely no problems (but that's not acceptable, just temporary). If I run Kodi (v18), I don't seem to have an issue (yet)... feel like this could creep up on me also. I watched 4K videos over 1GB from my file server like champ. Again, either I need a new HDMI cable or I have to mess more with the refresh rates. Anyone seen this before?
To sum up my finally working setup (seriously had to do a lot of tinkering to get this to work on this model PC, namely because there are NO DRIVERS for b1511 for this model desktop). I had to play with different AMD drivers as Lenovo didn't have any drivers for b1511. I had to manually browse the driver files from device manager to get bluetooth, wifi, etc. working. Here's my current (almost fully working) setup:
Lenovo ThinkCenter M75q-1 (Ryzen 5 3400G)
HDHR Network 3-Tuner with CableCard from Verizon FIOS
Windows 10 b1511 (stop updates installed, but only enabled after WMC setup was completed)
AMD Radeon Adrenaline 2020 20.1.3
Lenovo drivers manually injected via device manager (extracted the oldest drivers from website)
HDHR 2015 setup
Digital Cable Advisor (had to be manually installed and then ran)
1. AMD Display driver was failing when trying to get WMC full screen working correctly (refresh rate or HDMI issues)
2. Display Driver error comes up when WMC is first launched - must maximize/minimize window every time to resolve
3. Unable to run WMC in fullscreen mode yet -- could be related to issue #1 above
I may have to live with that display driver issue forever. I remember having this problem back in the day even on Windows 7... not sure if it's related to HDCP or not.
Fingers crossed that my new HDMI cable coming in today resolves all issues (wishful thinking). I picked up a DP to HDMI 4k Cable from Amazon.
Let's hope this lasts! I took an image with Macrium reflect. For those of you that have working PlayReady setups, take an image!! Macrium reflect has a free version that works well (or use whatever you like).
I'm thinking about building a few Windows 10 VMs now to see if I can get those to work (to hold onto them). I currently run WMC on two windows 7 VMs still... probably should upgrade those while I can.