RetroGamerCX Posted September 20, 2020 Share Posted September 20, 2020 (edited) hi, i'm new here, and today i installed a virtual machine with macos catalina on my computer, using qemu-system-x86. here's the host configuration: ram: 16gib ddr4 hd: sata 1tb motherboard: asrock a320m-hd processor: amd a6-9500 radeon r5, 8 compute cores, 2c + 6g operating system: debian gnu/linux 11 bullseye/sid guest configuration: ram: 12gib (there is also a bug where macos says that the memory is ddr3 at 0mhz speed) processor: intel core 2 duo (I wanted to switch to the broadwell generation, but unfortunately the penryn generation was the only one that worked) processor cores: 2 gpu: virtio-gpu (with virgl) ssd: 256gib (there is also another bug where macos only detects the ssd, but does not detect the connection (like sata, nvme, ide)) computer recognized by macos catalina: imac 27-inch (late 2009) I tried several tutorials on the internet, but none of them worked, not even the fake id worked. so the system ends up having only 3mb of vram, but I can adjust the resolution to different levels: 1280x720 1600x900 1920x1080 2048x1154 2560x1440 and unfortunately, my monitor resolution (1440x900) is not listed. one thing i realized is that depending on the resolution i set, the video memory changes its value; for example: at 1280x720 resolution there is only 3mb of vram and when I switch to 2560x1440 resolution, there’s 14mb of vram doing calculations, I ended up realizing that this happens depending on how much memory is needed; for example: 1280x720 resolution: 1280 pixels wide, multiplied by 720 pixels high, multiplied by 3 bytes (24 bits) of color depth, results in 2 764 800 bytes, which is equivalent to 2,764 megabytes of vram, so the system rounds this value up to 3 megabytes, and the same calculation with different resolutions. but the problem is that I want the system to have at least 128 mib of vram so that the system animations are smoother. although, i can play videos on youtube, but the highest resolution the system can handle without crashing is 720p. I think it will be more difficult to solve this compared to other people, because other people installed macos on a real machine, not a virtual machine. my suspicion is the generic qemu video driver, and i don't know if there are video drivers for qemu, i researched a lot and still found nothing. here's the configuration file, if something is wrong: launch Edited September 23, 2020 by RetroGamerCX Link to comment Share on other sites More sharing options...
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