However, some applications such as glxgears will not work with the Metal backend. (iOS) It is recommended that you switch to the Metal backend in Preferences for better performance.The overall benefits will not be as pronounced as for Linux VMs so it is optional that you change existing VMs to a -gl display card. However, the GL backend can still be beneficial to Windows users because it has smoother animations and less tearing and artifacts. There is NO 3D acceleration drivers for Windows yet, so unlike Linux, this will not improve any compatibility with applications. Newly created Windows VMs will now use virtio-ramfb-gl (Apple Silicon) or virtio-vga-gl (Intel) by default.Note that some applications (particularly 3D applications) may lock up or crash UTM and if you are experiencing issues, you can go back to virtio-ramfb or virtio-vga. This should result in improved performance in GUI rendering. It is recommended that you change the display card of existing QEMU backend Linux VMs to this card in order to take advantage of the improved renderer backend. Newly created Linux VMs will now use virtio-gpu-gl-pci by default. Please use UTM v3.x for support down to iOS 11 and macOS 11 iOS 14 and macOS 11.3 are the minimum supported systems for UTM v4.x.The menu bar extra provides a minimal interface to start/stop/suspend VMs and is useful when paired with headless VMs (a VM that does not have any display or terminal console installed). You can enable the menu bar extra icon in Preferences (Cmd+,) as well as disable the dock icon. A command line application is also provided in UTM.app/Contents/MacOS/utmctl (which you can symlink to /usr/local/bin/utmctl if desired) that can be used for automation tasks without needing to learn AppleScript. More functionality will be added in the future. Currently there is support for listing VMs as well as start/stop/suspend operations and the ability to print out the guest serial port connections. You can control parts of UTM through the OSA interface. (macOS) AppleScript (OSA) support and CLI interface. Note that it is recommended that TSO be disabled if you do not need to emulate x86_64 because it can reduce performance of other tasks. It can now be used on M1 iPads with QEMU to improve performance of FEX-Emu or a patched Rosetta. TSO is used by Rosetta on the Mac to improve x86_64 emulation on ARM64.
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