Hi! Seems like you're using the QEMU from your distro, so should this be a bug report against Ubuntu's QEMU instead? Otherwise, can you please try again with the latest upstream version of QEMU (currently an RC of v5.2)? You certainly also need to provide more information, e.g. what kind of error message do you see, how often did you try (maybe it's just an intermittent problem and it sometimes also works without rebooting the host), etc.
** Changed in: qemu Status: New => Incomplete -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1906156 Title: Host OS Reboot Required, for Guest kext to Load (Fully) Status in QEMU: Incomplete Bug description: Hi, Finding this one a bit odd, but I am loading a driver (kext) in a macOS guest ... and it works, on the first VM (domain) startup after a full / clean host OS boot (or reboot). However, if I even reboot the guest OS, then the driver load fails => can be "corrected" by a full host OS reboot (which seems very extreme). Is this a known issue, and/or is there a workaround? FYI, running, QEMU emulator version 5.0.0 (Debian 1:5.0-5ubuntu9.1) Copyright (c) 2003-2020 Fabrice Bellard and the QEMU Project developers This is for a macOS guest, on a Linux host. Thanks! To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1906156/+subscriptions