bhyve framebuffer: atkbd data buffer full

aragats

aragats

I believe this is an old issue, but I experience it in my both bhyve Windows 7 setups on completely different hardware.

When accessing bhyve framebuffer via vncviewer (doesn't matter which one) I cannot type, bhyve spits out atkbd data buffer full message with each keystroke.

There exists a bug report but nobody ever reacted it.

This issue is very annoying, are there any workarounds?

Thanks!
 
Here is the script I run to start bhyve:
Code: 
#!/usr/local/bin/bash
CD=/home/sergeym/vm/win7-inst-v5.iso
HD=/dev/zvol/zoo/win7
UEFI=/usr/local/share/uefi-firmware/BHYVE_UEFI.fd
MEM=4G
VM="win7"
IF="tap0"
MAC="mac=00:A0:98:78:32:22"
DPY="w=1024,h=768"

while true
do
    sudo bhyve \
      -c 4 -S \
      -s 0,hostbridge \
      -s 3,ahci-hd,$HD,sectorsize=512 \
      -s 4,ahci-cd,$CD \
      -s 5,fbuf,tcp=0.0.0.0:5900,$DPY \
      -s 10,virtio-net,$IF,$MAC \
      -s 31,lpc \
      -l com1,/dev/nmdm0A \
      -l com2,/dev/nmdm1A \
      -l bootrom,$UEFI \
      -m $MEM -H -w \
      $VM

    RES=$?
    sudo bhyvectl --destroy --vm=$VM
    if [ $RES -eq 1 ]
    then
        exit 1
    fi
    echo sleeping for 5 sec...
    sleep 5
done
 
Some more questions: what variant of Win7 ? (e.g. sp2)

Also, what CPU models were you seeing this issue on ?
 
Both are Windows 7 Enterprise SP1.
One is on Intel(R) Core(TM) i7-3520M.
Another on Intel(R) Xeon(R) CPU E5-1650 v3.

I believe, OSs have latest updates, especially the one on Xeon.

The keyboard used to work in VNC several months ago, I'm not sure when it's happened: after updating FreeBSD or Windows. Usually I use RDP, not VNC.
 
I tried this config and it seemed to work Ok with an install/boot of Win7 Sp1. However, that wasn't with much runtime. Are you seeing this immediately on reboot, or after a long period of use ?
 
Yes, believe, I see it right after reboot.
When I start typing in the username/password boxes (in a VNC client) nothing happens (no symbols appear) until the buffer gets filled, and bhyve starts printing atkbd data buffer full messages.
 
sp55aa said:
you need add this to bhyve:
Code: 
-s 29,xhci,tablet
Click to expand...
It's not clear how xhci "fixes" the keyboard problem since it's for mouse (in this case). Yes, the keyboard is working, but the mouse doesn't since Windows 7 doesn't support XHCI.
I and other people already have tried installing Intel drivers without any success, see this thread.
The keyboard used to work before a certain update, and I believe it still works for many people...
 
This is really funny: after I've tried the xhci option and then removed it, the keyboard works in VNC now!
I restarted bhyve several times and it still works! Cannot imagine what could happen!

UPDATE: the keyboard still works after restarting the computer!
Maybe grehan@ can shed light on this magic?
 
Unfortunately not :( I've not been able to repro this - have had a 4 vCPU Win7 VM up and running on and off for a couple of weeks now without seeing the issue. That said, I didn't include the nmdm config lines so will give that a try.
 
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