Guest (post `vm.sh reset with-src`, clean):
DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #0: Thu Jul  2 06:02:54 UTC 2026     root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64
compiler: cc 8.3 [DragonFly] Release/2019-02-22
PCI: no vendor-1013 (Cirrus/CS4281) function -> snd_cs4281 probe()=ENXIO, attach/mixer_init unreachable
PCI: no vendor-14f1 (Conexant/cxm) function
/dev: no /dev/mixer*, /dev/dsp*, /dev/cxm*, /dev/video* nodes
module: /boot/kernel/snd_cs4281.ko present (not loaded in final run)
QEMU: no CS4281 emulation exists upstream, so no guest config can host the trigger
cxm: /boot/kernel/cxm.ko present; no vendor-14f1 (Conexant) PCI function -> cxm attach unreachable, /dev/cxm* absent