OpenGL 3D acceleration in virt manager 🐧 ubuntu

Bykronos 

a - enable iommu
check if iommu is enabled from bios
grep -E 'svm|vmx' /proc/cpuinfo
if is not enable it enabled to the bios
then edit grub → sudo nano /etc/default/grub
add → intel_iommu=on iommu=pt for intel or amd_iommu=on for amd
at the GRUB_CMDLINE_LINUX_DEFAULT
then run  →  sudo update-grub
sudo reboot
  
b - enable OpenGL/3D acceleration in vm
open the settings of the virtual machine you want to enable OpenGL/3D acceleration
go to Display Spice
select None to Listen Type
Enable OpenGL
select the GPU
Then go to Video Virtio
enable 3D acceleration

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