AMD graphics driver support for CPUs without AVX2 in Ventura

[ownway88]

Hello,

Great work with v19 release!

I see that Opencore Legacy Patcher(OCLP) is patching the AMD Polaris Graphics stack so that the CPUs without AVX2.0 can work in Ventura with graphics acceleration. Will this be possible to be included in KVM-Opencore in the future?

[Medizinmann-MD]

Well - in theorie - you could actually use OpenCore Legacy Pacher to create a patched installer and use this as a basis for creation of an ISO.

And as I understand it - you may even just need to install the post-install patches from OpenCore legacy patcher!
https://dortania.github.io/OpenCore-Legacy-Patcher/POST-INSTALL.html#applying-post-install-volume-patches

[ownway88]

OCLP documentation suggested the installation of the post-install patches in safe mode as logging into Ventura directly with AMD cards is not possible.

The problem is that I cannot get into Safemode with KVM-Opencore to apply post-install patches. To get into safe mode, I simply Hold Shift+Enter when selecting Ventura in Boot Picker, I always ran into the prohibit sign with the failure "StartImage failed".

https://dortania.github.io/OpenCore-Legacy-Patcher/VENTURA-DROP.html#current-status

[Medizinmann-MD]

You could use -x in boot args to boot into safe mode - AFAIK Shift+Enter won't work with QEMU.
acidanthera/bugtracker#1967

[ownway88]

I saw that thread as well and tried to add -x in boot args, but still got the same failure unfortunately.

[Medizinmann-MD]

After some research this seems to be a problem with the OVMF/UEFI BIOS for Proxmox - right now it isn't possible to boot in to safe mode with this particular BIOS.

Question is if this BIOS can be patched and if anyone with the capabilities will do it.

[zaidranger]

Any workaround?