Re: Virtual GPU for FreeBSD as guest virtualized with qemu / kvm -- best alternative ? Cirrus ?

On Fri, Jul 28, 2023 at 9:27 AM Mario Marietto <marietto2008@gmail.com>
wrote:

> Thanks. it does not work. This is the error I get : (on the attached
> picture,you can read "segmentation fault"...
>
> [image: unnamed.png]
>
> On Fri, Jul 28, 2023 at 4:18 PM Ronald Klop <ronald@freebsd.org> wrote:
>
>> On 7/23/23 16:27, Mario Marietto wrote:
>> > Hello to everyone.
>> >
>> >
>> > I would like to virtualize FreeBSD on Windows 11 with qemu-kvm (for
>> Windows). I've end up with the following parameters which are working :
>> >
>> >
>> > |I:\OS\qemu\Linux\qemu\qemu-system-x86_64w.exe -accel whpx -machine q35
>> \ -cpu
>> Westmere,vendor=GenuineIntel,+pcid,+ssse3,+sse4.2,+popcnt,+avx,+aes,+xsave,+xsaveopt,check
>> \ -m 8G -vga qxl -audiodev dsound,id=snd0 -device ich9-intel-hda -device \
>> hda-duplex,audiodev=snd0 \ -hda
>> "I:\OS\ISO\FreeBSD\FreeBSD-13.2-RELEASE-amd64-disc1.iso" \ -hdb
>> "I:\OS\qemu\Linux\FreeBSD.img" -rtc base=localtime \ -device
>> nec-usb-xhci,id=xhci -device usb-tablet -device usb-kbd \ -global
>> nec-usb-xhci.msi=off -smbios type=2 -nodefaults -netdev user,id=net0 \
>> -device virtio-net-pci,netdev=net0,id=net0,mac=52:54:00:11:22:33 \ -device
>> ich9-ahci,id=sata -bios "I:\OS\qemu\Linux\OSX-KVM-master\OVMF_combined.fd"|
>> >
>> >
>> > Now I'm trying to configure Xorg and the xfce4 desktop environment.
>> Since I'm using qemu,there are a lot of display devices available to
>> try,but I don't know which one is good for FreeBSD. In the website below
>> there is a good list of all options available :
>>
>
I've found that `-vga std` with the xf86-video-vesa package works best.

This combination only appears to support a maximum resolution of 1920x1080,
but I have not found anything better over the last few years.


> >
>> >
>> > https://www.kraxel.org/blog/2019/09/display-devices-in-qemu/ <
>> https://www.kraxel.org/blog/2019/09/display-devices-in-qemu/>
>> >
>> >
>> > On FreeBSD I have installed the package drm-kmod and it suggests to me
>> to add to the rc.conf file one of these parameters :
>> >
>> >
>> >  1.
>> >
>> >     for amdgpu : kld_list="amdgpu"
>> >
>> >  2.
>> >
>> >     for intel : kld_list="i915kms"
>> >
>> >  3.
>> >
>> >     for radeonkms : kld_list="radeonkms"
>> >
>> >
>> > qemu does not cover any of those. I don't know which option is decent
>> for my case. I would like to try with the cirrus display driver. Maybe this
>> one :
>> >
>> >
>> > https://www.freshports.org/x11-drivers/xf86-video-cirrus/ <
>> https://www.freshports.org/x11-drivers/xf86-video-cirrus/>
>> >
>> >
>> > |So,I have installed this package : pkg install xf86-video-cirrus
>> >
>> > |
>> >
>> > I've rebooted and I have changed |-vga qxl to -vga cirrus|
>> >
>> > FreeBSD recognized it at 0:1:0
>> >
>> >
>> > 2023-07-23 15_21_33-QEMU.png
>> >
>> > I have created xorg.conf with this content :
>> >
>> > |Section "Device" Identifier "Device0" Driver "cirrus" BusID
>> "PCI:0:1:0" Screen 0 EndSection|
>> >
>> >
>> > error : no screens found.
>> > This is the reason why it does not work :
>> >
>> >
>> > 2023-07-23 15 49 44.png
>> >
>> > but the module seems to be there :
>> >
>> > |cd /usr/local/lib/xorg/modules/drivers/ ls *cirrus_drv.so* ;
>> modesetting_drv.so ; scfb_drv.so ; vesa_drv.so ;|
>> >
>> >
>> > What should I do ?
>> >
>> > --
>> > Mario.
>>
>>
>> A https://www.freshports.org/x11-drivers/xf86-video-qxl/ driver exists.
>> It didn't work on my qemu on Mac/ARM. Maybe it works for you.
>>
>> Ronald.
>>
>>
>
> --
> Mario.
>