- Joined
- Apr 8, 2011
- Messages
- 6
- Motherboard
- Gigabyte Z390 Designare
- Graphics
- Vega 56
- Mac
So a couple of things to report as I dug in:
1) Suspecting my rx580 I ordered an MSI Vega56. Did not fix the 'TV App not streaming' problem (but in the end a good and likely necessary change to have made...)
2) I was attempting to run my graphics in headless mode => IGPU enabled (in bios) with Whatevergreen.kext. Using SMBIOS iMac 19,1
3) Spent a lot of time trying to manually set framebuffer values, etc... ig-platform-id's... all to nought; I think WEG should be doing this.
3) Then, I found this post which (thanks to user Jaco1960) clearly indicated that a DGPU only solution (i.e. not headless) was working - but required using SMBIOS iMacPro 1,1
Using Clover, I changed my model to iMacPro 1,1 (updating the RT VARIABLES serial number to match the main board serial (to keep facetime, messages, etc... working); then, disabled my IGPU in the BIOS and Voila - it worked.
I was always struggling with Airplay on the rx580 (accelerated or not) but in this mode (at least with the Vega56) Airplay seems to be accelerated fine and the TV app streams too. Also, iMovie didn't run in this mode on the rx580 - but it all works on the Vega56. Much better support across the board - worth changing the card I think.
The link I found indicates that Sidecar might not work - but, as soon as I get an iPad to test I'll update.
1) Suspecting my rx580 I ordered an MSI Vega56. Did not fix the 'TV App not streaming' problem (but in the end a good and likely necessary change to have made...)
2) I was attempting to run my graphics in headless mode => IGPU enabled (in bios) with Whatevergreen.kext. Using SMBIOS iMac 19,1
3) Spent a lot of time trying to manually set framebuffer values, etc... ig-platform-id's... all to nought; I think WEG should be doing this.
3) Then, I found this post which (thanks to user Jaco1960) clearly indicated that a DGPU only solution (i.e. not headless) was working - but required using SMBIOS iMacPro 1,1
Using Clover, I changed my model to iMacPro 1,1 (updating the RT VARIABLES serial number to match the main board serial (to keep facetime, messages, etc... working); then, disabled my IGPU in the BIOS and Voila - it worked.
I was always struggling with Airplay on the rx580 (accelerated or not) but in this mode (at least with the Vega56) Airplay seems to be accelerated fine and the TV app streams too. Also, iMovie didn't run in this mode on the rx580 - but it all works on the Vega56. Much better support across the board - worth changing the card I think.
The link I found indicates that Sidecar might not work - but, as soon as I get an iPad to test I'll update.