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

From: Mario Marietto <marietto2008_at_gmail.com>
Date: Fri, 28 Jul 2023 15:15:05 UTC
Actually the problem that I have is something like this :

https://superuser.com/questions/1799481/wrong-mouse-movements-virtualizing-freebsd-on-windows-11-with-qemu-kvm

On Fri, Jul 28, 2023 at 4:42 PM Mario Marietto <marietto2008@gmail.com>
wrote:

> In the last few days I found something better than the simple -vga std. It
> is :
>
> -device vmware-svga,id=video0,vgamem_mb=16,bus=pcie.0,addr=0x1
>
>
> qemu supports it and FreeBSD,too....
>
> On Fri, Jul 28, 2023 at 4:33 PM Jake Freeland <jake@technologyfriends.net>
> wrote:
>
>> 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.
>>>
>>
>
> --
> Mario.
>


-- 
Mario.