On Thu, Sep 11, 2014 at 06:40:38PM +0200, Paolo Bonzini wrote: > Il 11/09/2014 18:35, Gabriel L. Somlo ha scritto: > >> > Can you configure Chamaleon to avoid the boot prompt? > > Yes. After doing that, usb starts working once OS X is fully booted. > > > > Works with either piix or q35 just fine. > > > > Does this mean it's likely to be an OVMF uhci/ehci issue specific to Q35 ? > > (one from which Fedora can recover but OS X can't) ? > > Yes, that's my interpretation too. > > You did test an UHCI controller, I think, but I don't remember---did you > test an EHCI controller without companions, using something like > "-device ich9-usb-ehci1,id=myehci -device usb-keyboard,bus=myehci.0"?
That fails during QEMU initialization with: qemu-system-x86_64: -device usb-kbd,bus=myehci.0: Warning: speed mismatch trying to attach usb device "QEMU USB Keyboard" (full speed) to bus "myehci.0", port "1" (high speed) qemu-system-x86_64: -device usb-kbd,bus=myehci.0: Device initialization failed. qemu-system-x86_64: -device usb-kbd,bus=myehci.0: Device 'usb-kbd' could not be initialized So I guess OVMF doesn't have a chance to get involved here before we crash and burn :) Thanks, --Gabriel > If that works, the issue would be specific to EHCI companion > controllers. If that doesn't work, there is at least a generic in the > EHCI driver---of course there could possibly be another in the companion > controllers, but I'd try getting EHCI alone to work.
