bhyve intel 530 integrated graphics error

From: Michael Slgedal <>
Date: Wed, 17 Jan 2024 00:18:00 UTC


I’ve been trying to collect the necessary info online about how to do gpu
passthru with integrated intel graphics to win10, but can’t make it work.


 1. First tried with just passthru, and after 3-4 reboots, the display adapter
    shows up in win10 guest, but it won’t load properly.
 2. Tried adding the hd audio device as well, get bluescreen with
    “memory_management” stop code in guest
 3. Tried adding a gop rom from -
    host crashed and got error below


I’m at a loss what to try next. Any ideas where I’m going wrong?


# tail /vm/win10ltsc/vm-bhyve.log       

Jan 17 00:49:02:  [primary disk: disk0.img]

Jan 17 00:49:02:  [primary disk dev: file]

Jan 17 00:49:02: dynamically allocated port 5900 for vnc connections

Jan 17 00:49:02: booting

Jan 17 00:49:02:  [bhyve options: -c 6,sockets=1,cores=3,threads=2 -m 8G -Hwl
bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI.fd -s 2:0,passthru,0/2/0,rom=
/vm/win10ltsc/i915ovmf.rom -U 8dff5c4a-b083-11ee-b2cd-78d004259091 -S]

Jan 17 00:49:02:  [bhyve devices: -s 0,hostbridge -s 31,lpc -s 4:0,ahci,hd:/vm/
win10ltsc/disk0.img -s 31:6,passthru,0/31/6 -s 6:0,fbuf,tcp=,w=
1920,h=1080 -s 7:0,xhci,tablet]

Jan 17 00:49:02:  [bhyve console: -l com1,/dev/nmdm-win10ltsc.1A]

Jan 17 00:49:02: starting bhyve (run 1)

Jan 17 00:49:04: bhyve exited with status 134

Jan 17 00:49:04: stopped


# tail /vm/win10ltsc/bhyve.log  

pci_fbuf: mmap_memseg failed

Assertion failed: (mr->name == memp->name), function unregister_mem, file /usr/
src/usr.sbin/bhyve/mem.c, line 344.


# uname -a

FreeBSD yellowfellow 14.0-RELEASE-p3 FreeBSD 14.0-RELEASE-p3 #0: Mon Dec 11
04:56:01 UTC 2023
amd64.amd64/sys/GENERIC amd64