- Jul 21, 2011
- Zbook G5 17"
- AMD WX-4170
Sorry for the late reply: turns out it was mojave, booting Catalina worked fine.
Now into finetuning, the first issue is that i cannot unlock the TDP of the CPU, i am limited to 28w short 15w long as by HP defaults. In windows, i have XTU set up at boot with a script to increase it to 45 long - 55 short and it wokrs perfectly, sadly voltageshift cannot do the same on macOs . Stock cinebench R15 on macOs is 445, with a -170 undervolt i get 750, on windows with undervolt i get 800 at stock and 1100 when i unlock the TDP
Regarding the trackpad, i'm using 3 fingers drag
Hi, yeah I reinstalled my Mojave system, and I had to use my clover boot to run the installer, once installed and updated, Opencore works as long as secure boot is disabled, and I remember copying the secure boot files to the EFI worked before to be able to enable secure boot, so I guess it's a Mojave quirk.
YES!! the undervolting/MSR unlock thing!!! I spent some time trying but then I read on a HP forum that they disabled MSR unlock on the last couple of BIOS updates, so if you want to undervolt, you have to roll back to some previous BIOS version that can be unlocked. but... that makes it vulnerable to something something attack... So trade speed for security?
The problem with these laptops is they can handle and they are great at dissipating heat, but the fan profile for MAC is too slow and they go into thermal throttling in some cases.
It's very obvious with cinebench because the same process goes into TT and then once the CPU is cool enough, it doesn't speed back up.
In the case of other software, I find that it is not as much of a problem, as the process that went into TT finishes, and then a new one starts, and by then it's cool again, etc... so the slowdown is not as dramatic.
But I agree, we should be able to undervolt!
On other news, I had to put the WX-4170 back and I ran some other tests.
I managed to fix the GOP ROM and tweaked it a bit, so it is running very smooth, but Catalina AMD drivers just refuse to load. High Sierra and Mojave run smooth, and everything is working.
My Headless HDMI Plug hack didn't work as good as I expected, If I cloned displays but made the AMD primary, Cinebench worked, but Unigine still used IGPU, and If I switched to dual displays then both worked, but I had to VNC in, grab the window from the ghost monitor and drag it to the internal display, and then it worked... So much for an easy solution.
Last, I tested with 2x 4k monitor, and it had no problem running 2x 4k screens and the internal at 1080. So the Hybrid combo works nicely, not 100% perfect, but very usable.
Turns out my USBC to HDMI converter was the problem, I guess it's passive and it's hit or miss if it'll work. but Thunderbolt to thunderbolt display perfect!
Also I believe the Discrete Bios option glitches on the internal screen because of HDCP handshake. When the computer starts or the driver first talks to the screen, it works, but if the screen goes to sleep or switches inputs for a second, the handshake is lost and that's why I get digital snow, and why brightness works and I can VNC in and everything appears to be working underneath. and why when the laptop wakes from sleep, it re loads the handshake and it works again. So again it's a driver issue, since the Windows/Linux drivers have no problem, so I doubt it's my ROM or the AMD card or the internal screen.