MacBook Pro M4: QEMU error: QEMU exited from an error: With SME enabled, at least one vector length must be enabled.

[rosch100]

Describe the issue
QEMU error: QEMU exited from an error: With SME enabled, at least one vector length must be enabled.
The VM was working before on a M1 MacBook Pro and transferred to an M4 MacBook Pro using Apples System migration tool.

Configuration

• UTM Version: 4.5.4
• macOS Version: 15.2 Beta (24C5073e)
• Mac Chip (Intel, M1, ...): M4Pro

Debug log
QEMU-debug.log

Upload VM
config.plist.zip

[tjd-dev]

Experiencing this as well.

[Johnny9828]

Hello, I have the same problem.

it seems to be an issue with the M4's new scalable matrix extension. I have the same beta as you, hopefully it gets fixed soon.

[osy]

This is a bug in QEMU https://gitlab.com/qemu-project/qemu/-/issues/2665 but we will add a workaround in the next release.

[nayabryan]

Any idea on when the next release will take place?

Thank you.

[RealHuman20]

I'm also experiencing this on my M4 Mac mini. Hope to see a fix soon. Thanks!

[AgainstGreaterOdds]

Same issue here following public macOS 15.2 release. Where's the fix?

[AgainstGreaterOdds]

Same issue here following public macOS 15.2 release. Where's the fix?

Please disregard. My UTM app was out of date. Resolved with the latest release. Thanks, team!

[AkihiroSuda]

Would you be possible to submit this patch to the upstream?

Context:

• qemu: apply hvf: arm: disable SME which is not properly handled by QEMU Homebrew/homebrew-core#201613 (review)

[osy]

@AkihiroSuda No, because as the patch states "DO NOT MERGE" because it is not a proper fix. We (UTM) do not use SME so it does not matter. Upstream needs to handle more than Apple Mx processors.

Please follow https://gitlab.com/qemu-project/qemu/-/issues/2665 for a proper fix.

[winsonet]

so may I know how to fix this issue? all of my VM are not be able to started after I upgraded the MacOS patches :(

[osy]

Update to the latest UTM

[winsonet]

Update to the latest UTM

Oh, there is a new version! Thank you so much!