Re:_How_to_use_the_framebuffer_ as_primary_video_device_instead _of_the_nvidia_passed-through_g raphic_card_in_a_bhyve/linux_vm

On December 3, 2022 4:49:46 PM GMT+01:00, Mario Marietto <marietto2008@gmail.com> wrote:
>Hello to everyone.
>
>what Im trying to do is to set the framebuffer video adapter as primary
>graphic card on my bhyve-ubuntu vm instead of the nvidia RTX 2080 ti card
>that I have passed through. What I want to do really is to use both the
>graphic adapters,but the primary should be the framebuffer and the
>secondary the nvidia. I tried different Xorg configurations,but what I've
>got is that Xorg failed to display some errors. So,the controller that you
>see below should be used as primary inside the ubuntu vm :
>
>00:1d.0 VGA compatible controller: Device fb5d:40fb
>
>while the ones you see below as secondary :
>
>08:00.0 VGA compatible controller: NVIDIA Corporation TU102 [GeForce
>RTX 2080 Ti] (rev a1)
>08:00.1 Audio device: NVIDIA Corporation TU102 High Definition Audio
>Controller (rev a1)
>08:00.2 USB controller: NVIDIA Corporation TU102 USB 3.1 Host
>Controller (rev a1)
>08:00.3 Serial bus controller: NVIDIA Corporation TU102 USB Type-C
>UCSI Controller (rev a1)
>
>
>The script that I use to launch the vm is the following :
>
>#!/bin/sh
>setxkbmap it
>vms="$(ls /dev/vmm/*)"
>vncs="$(ps ax | awk '/vncviewer [0]/{print $6}')"
>
>for vm in $vms; do
>                session="${vm##*/}"
>                echo "bhyve session = $session"
>                echo "vnc session = $vncs"
>                if ! printf '%s\n' "${vncs}" | grep "${session}"; then
>                                printf 'VNC session not
>found,destroying ghost vms\n'
>                                bhyvectl --vm=$session --destroy
>                else
>                                printf 'Found VNC session %s\n'
>"${session},no ghost vms found,not destroying them"
>                fi
>done
>
>vmdisk1=`geom disk list | awk '/^Geom name: /{d=$NF} /^ *ident:
>(2015020204055E)/ && d{print d}'`
>echo "TOSHIBA External USB 3.0 1.8 TB ; $vmdisk1"
>
>mount -t ufs /dev/$vmdisk1'p2' /mnt/$vmdisk1'p2'
>
>bhyve -S -c sockets=1,cores=2,threads=2 -m 4G -w -H -A \
>-s 0,hostbridge \
>-s 2,virtio-blk,/mnt/$vmdisk1'p2'/bhyve/img/Linux/ubuntu2210.img,bootindex=1 \
>-s 3,virtio-blk,/dev/$vmdisk4 \
>-s 4,virtio-blk,/dev/$vmdisk2 \
>-s 8:0,passthru,2/0/0 \
>-s 8:1,passthru,2/0/1 \
>-s 8:2,passthru,2/0/2 \
>-s 8:3,passthru,2/0/3 \
>-s 10,virtio-net,tap19 \
>-s 11,virtio-9p,sharename=/ \
>-s 29,fbuf,tcp=0.0.0.0:5919,w=1600,h=950,wait \
>-s 30,xhci,tablet \
>-s 31,lpc \
>-l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI_CODE.fd \
>vm0:19 < /dev/null & sleep 2 && vncviewer 0:19
>
>For sure ,on /boot/loader.conf I've added :
>
>/boot/loader.conf
>
>pptdevs="2/0/0 2/0/1 2/0/2 2/0/3"
>
>As I said before,I tried two xorg conf files to achieve the goal. On the
>first one I tried to add only the framebuffer,like this :
>
>
>Section "Files"
>    ModulePath   "/usr/lib/xorg/modules"
>    FontPath     "/usr/share/fonts/X11/misc"
>    FontPath     "/usr/share/fonts/X11/cyrillic"
>    FontPath     "/usr/share/fonts/X11/100dpi/:unscaled"
>    FontPath     "/usr/share/fonts/X11/75dpi/:unscaled"
>    FontPath     "/usr/share/fonts/X11/Type1"
>    FontPath     "/usr/share/fonts/X11/100dpi"
>    FontPath     "/usr/share/fonts/X11/75dpi"
>    FontPath     "built-ins"
>EndSection
>
>Section "Module"
>    Load  "vnc"
>    Load  "glx"
>EndSection
>
>
>Section "InputDevice"
>    Identifier  "Keyboard0"
>    Driver      "kbd"
>EndSection
>
>Section "InputDevice"
>    Identifier  "Mouse0"
>    Driver      "mouse"
>    Option        "Protocol" "auto"
>    Option        "Device" "/dev/input/mice"
>    Option        "ZAxisMapping" "4 5 6 7"
>
>EndSection
>
>Section "Monitor"
>    Identifier   "Monitor0"
>    VendorName   "Monitor Vendor"
>    ModelName    "Monitor Model"
>EndSection
>
>Section "Device"
>   Identifier  "Card0"
>   Driver      "modesetting"
>   BusID       "PCI:0:29:0"
>
>EndSection
>
>Section "Screen"
>    Identifier "Screen0"
>    Device     "Card0"
>    Monitor    "Monitor0"
>    SubSection "Display"
>        Viewport   0 0
>        Depth     1
>    EndSubSection
>    SubSection "Display"
>        Viewport   0 0
>        Depth     4
>    EndSubSection
>    SubSection "Display"
>        Viewport   0 0
>        Depth     8
>    EndSubSection
>    SubSection "Display"
>        Viewport   0 0
>        Depth     15
>    EndSubSection
>    SubSection "Display"
>        Viewport   0 0
>        Depth     16
>    EndSubSection
>    SubSection "Display"
>        Viewport   0 0
>        Depth     24
>    EndSubSection
>EndSection
>
>
>but it didn't work. This is the log file that shows the errors
>reported : https://pastebin.ubuntu.com/p/Gv7wgsDR4K/
>I have also removed the xorg.conf file,but it didn't work either. This
>is the log file that shows the errors reported :
>
>
>https://pastebin.ubuntu.com/p/wNcfQTByQm/
>
>Can someone give me some suggestions that can help me to understand
>where the mistake is,please,thanks.
>
>-- 
>Mario.

Try to assign a lower pci slot number to the framebuffer device than to the nvidia gpu in your bhyve command.

-- 
Best regards,
Corvin