Dell Optiplex 3020 HD4400 i3-4150 Mojave (>=10.14.5) and Catalina weird behaviour with transparency

[equinoxe123]

Hi

I have a Dell PC Optiplex 3020 I3 - 4150 HD4400 with Mojave 10.14.4 working fine, but when I update to Mojave 10.14.5, Mojave 10.14.6 or Catalina 10.15, initially everything seems ok. However, if I open Terminal with Homebrew tab (background color with transparency) the desktop shows artifacts, weird behaviour, freezes, etc in desktop, statusbar, dock. I need power-off and restart it with safe mode (-x).
When restarting in normal mode, the same thing happens to me if there is something graphic with transparency

I think I need to increase DVMT pre-alloc up to 128MB but the BIOS does not allow it.
Can you help me to get DVMT with 128MB and try it? I may be wrong, but I think that's the problem

I'm sorry for my bad english.

INFO: 10.14.4 works fine ...

 

[michaelamici]

I also have this problem!

Hi

I have a Dell PC Optiplex 3020 I3 - 4150 HD4400 with Mojave 10.14.4 working fine, but when I update to Mojave 10.14.5, Mojave 10.14.6 or Catalina 10.15, initially everything seems ok. However, if I open Terminal with Homebrew tab (background color with transparency) the desktop shows artifacts, weird behaviour, freezes, etc in desktop, statusbar, dock. I need power-off and restart it with safe mode (-x).
When restarting in normal mode, the same thing happens to me if there is something graphic with transparency

I think I need to increase DVMT pre-alloc up to 128MB but the BIOS does not allow it.
Can you help me to get DVMT with 128MB and try it? I may be wrong, but I think that's the problem

I'm sorry for my bad english.

INFO: 10.14.4 works fine ...

My computer: dell optiplex 9020m i3 4160t hd4400

Kept getting weird artifacts and freezing. I was able to increase the DVMT pre-alloc up to 128MB using the setup_var modified grub UEFI shell but it did not help, exact same problems described above with freezing

I keep getting GPU hang error with logs... I tried both WEG + Lilu and the old fakepciidintelhdmi way.