IGVT-g: Difference between revisions

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{{file|/etc/nixos/configuration.nix|nix|<nowiki>

boot.kernelPackages = pkgs.linuxPackages_5_2;

virtualisation.kvmgt.enable = true;

virtualisation.kvmgt.vgpus = {

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-nodefaults \

-display gtk,gl=on \

-device vfio-pci,sysfsdev=/sys/bus/mdev/devices/'''a297db4a-f4c2-11e6-90f6-d3b88d6c9525''',display=on,x-igd-opregion=on,driver=vfio-pci-nohotplug,ramfb=on

-device vfio-pci,sysfsdev=/sys/bus/mdev/devices/'''a297db4a-f4c2-11e6-90f6-d3b88d6c9525''',display=on,x-igd-opregion=on,driver=vfio-pci-nohotplug,ramfb=on,xres=1920,yres=1080

=== libvirtd ===

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<qemu:arg value='-set'/>

<qemu:arg value='device.hostdev0.driver=vfio-pci-nohotplug'/>

<qemu:arg value='-set'/>

<qemu:arg value='device.hostdev0.xres=1920'/>

<qemu:arg value='-set'/>

<qemu:arg value='device.hostdev0.yres=1080'/>

</qemu:commandline>

</domain>

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1

also check dmesg output for gvt related error, most likely there is not enough VRAM

* There is no VGPU device that has resolution of my screen

** Use this program in guest https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU to set resolution you need

* (libvirtd) VM stops immediately with no error other than "internal error: process exited while connecting to monitor"

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== Useful sources ==

* [https://www.kraxel.org/blog/2018/04/vgpu-display-support-finally-merged-upstream/ <em>vgpu display support</em> on a contributor (kraxel)'s blog] - this guide misses info that Windows guest requires x-igd-opregion=on parameter

* https://github.com/intel/gvt-linux/wiki/GVTg_Setup_Guide - obsoleted guide, but some parts are useful

* https://github.com/intel/gvt-linux/wiki/Dma_Buf_User_Guide - obsoleted guide, but some parts are useful

* https://blog.bepbep.co/posts/gvt/ - How to get 60fps!

* https://www.kraxel.org/blog/2019/02/ramfb-display-in-qemu/ - Info about ramfb parameter

[[Category:Video]]

[[Category:Virtualization]]

@@ Line 32: / Line 32: @@
 {{file|/etc/nixos/configuration.nix|nix|<nowiki>
+  boot.kernelPackages = pkgs.linuxPackages_5_2;
    virtualisation.kvmgt.enable = true;
    virtualisation.kvmgt.vgpus = {
@@ Line 55: / Line 56: @@
       -nodefaults \
       -display gtk,gl=on \
-      -device vfio-pci,sysfsdev=/sys/bus/mdev/devices/'''a297db4a-f4c2-11e6-90f6-d3b88d6c9525''',display=on,x-igd-opregion=on,driver=vfio-pci-nohotplug,ramfb=on
+      -device vfio-pci,sysfsdev=/sys/bus/mdev/devices/'''a297db4a-f4c2-11e6-90f6-d3b88d6c9525''',display=on,x-igd-opregion=on,driver=vfio-pci-nohotplug,ramfb=on,xres=1920,yres=1080
 === libvirtd ===
@@ Line 86: / Line 87: @@
      <qemu:arg value='-set'/>
      <qemu:arg value='device.hostdev0.driver=vfio-pci-nohotplug'/>
+    <qemu:arg value='-set'/>
+    <qemu:arg value='device.hostdev0.xres=1920'/>
+    <qemu:arg value='-set'/>
+    <qemu:arg value='device.hostdev0.yres=1080'/>
    </qemu:commandline>
 </domain>
@@ Line 113: / Line 118: @@
 also check dmesg output for gvt related error, most likely there is not enough VRAM
-* There is no VGPU device that has resolution of my screen
-** Use this program in guest https://www.monitortests.com/forum/Thread-Custom-Resolution-Utility-CRU to set resolution you need
 * (libvirtd) VM stops immediately with no error other than "internal error: process exited while connecting to monitor"
@@ Line 131: / Line 132: @@
 == Useful sources ==
-* [https://www.kraxel.org/blog/2018/04/vgpu-display-support-finally-merged-upstream/ <em>vgpu display support</em> on a contributor (kraxel)'s blog] - this guide misses info that Windows guest requires x-igd-opregion=on parameter
-* https://github.com/intel/gvt-linux/wiki/GVTg_Setup_Guide - obsoleted guide, but some parts are useful
-* https://github.com/intel/gvt-linux/wiki/Dma_Buf_User_Guide - obsoleted guide, but some parts are useful
 * https://blog.bepbep.co/posts/gvt/ - How to get 60fps!
 * https://www.kraxel.org/blog/2019/02/ramfb-display-in-qemu/ - Info about ramfb parameter
 [[Category:Video]]
 [[Category:Virtualization]]