CCing Marc-André and Gerd, maybe they have ideas - Cole On 5/6/20 2:24 PM, Filip Banák wrote: > Hi, thanks in advance. > > Only way I got it to work is with qemu on the command line like this: > > qemu-system-x86_64 -name Arch -drive file=/home/filip/VM/archlinux.qcow2 > -m 8192 -enable-kvm -M q35 -cpu host -smp > 12,sockets=1,cores=12,threads=1 -display egl-headless,gl=on -usb -device > usb-tablet -bios /usr/share/ovmf/x64/OVMF_CODE.fd -boot order=c -device > virtio-vga,virgl=on -spice > disable-ticketing,image-compression=off,seamless-migration=on,unix,addr=/run/user/1000/spice.sock > > remote-viewer --verbose --debug --spice-debug > spice+unix:///run/user/1000/spice.sock > > > I have checked the logs, and yes there were errors they are linked in > the Manjaro forum thread, but here you go: > > https://pastebin.com/pehWEQ0L > > These are the errors at the bottom: > qemu-system-x86_64: warning: Spice: dcc.c:664:dcc_push_monitors_config: > monitors_config is NULL > gl_version 33 - core profile enabled > qemu_spice_gl_scanout_texture: failed to get fd for texture > > But like I said the VM works even like that but I can use it only > blindly through the keyboard, because the screen is just black. > > > Dňa st 6. 5. 2020, 20:14 Cole Robinson <crobinso@xxxxxxxxxx > <mailto:crobinso@xxxxxxxxxx>> napísal(a): > > On 5/1/20 7:28 AM, Filip Banák wrote: > > Hello. > > > > I just want to use an Arch Linux guest with OpenGL 3D acceleration on > > with Spice. > > It works with Spice when the OpenGL acceleration is disabled. > > But when I enable it (with vitio graphics with accel3d yes of > course), I > > only see a black screen, but when the VM boots I can interact with it > > through the keyboard blindly. > > Please see my forum thread here for more: > > > https://forum.manjaro.org/t/qemu-kvm-vm-in-virt-manager-is-running-with-a-black-screen-when-opengl-acceleration-is-turned-on/138632 > > > > I also tested all this: > > > > Working with no acceleration with Spice without gl=on in -display: > > qemu-system-x86_64 -drive file=/home/filip/VM/archlinux.qcow2 -m 8192 > > -enable-kvm -M q35 -cpu host -smp 12,sockets=1,cores=12,threads=1 > > -display spice-app -usb -device usb-tablet -bios > > /usr/share/ovmf/x64/OVMF_CODE.fd -boot order=c -device > virtio-vga,virgl=on > > > > > > Not working with Spice with gl=on in -display, remote-viewer closes > > instantly: > > qemu-system-x86_64 -drive file=/home/filip/VM/archlinux.qcow2 -m 8192 > > -enable-kvm -M q35 -cpu host -smp 12,sockets=1,cores=12,threads=1 > > -display spice-app,gl=on -usb -device usb-tablet -bios > > /usr/share/ovmf/x64/OVMF_CODE.fd -boot order=c -device > virtio-vga,virgl=on > > > > Error: qemu-system-x86_64: warning: Spice: > > dcc.c:664:dcc_push_monitors_config: monitors_config is NULL > > > > > > Probably Working with acceleration(just no graphical output) without > > Spice with -display gtk,gl=on > > qemu-system-x86_64 -drive file=/home/filip/VM/archlinux.qcow2 -m 8192 > > -enable-kvm -M q35 -cpu host -smp 12,sockets=1,cores=12,threads=1 > > -display gtk,gl=on -usb -device usb-tablet -bios > > /usr/share/ovmf/x64/OVMF_CODE.fd -boot order=c -device > virtio-vga,virgl=on > > > > No error just black screen. > > > > > > Working with acceleration without Spice, just QEMU SDL: > > qemu-system-x86_64 -drive file=/home/filip/VM/archlinux.qcow2 -m 8192 > > -enable-kvm -M q35 -cpu host -smp 12,sockets=1,cores=12,threads=1 > > -display sdl,gl=on -usb -device usb-tablet -bios > > /usr/share/ovmf/x64/OVMF_CODE.fd -boot order=c -device > virtio-vga,virgl=on > > > > > > Working with with Spice with acceleration with EGL-HEADLESS, gl=on in > > -display does not matter here, it is automatic/implied: > > qemu-system-x86_64 -name Arch -drive > file=/home/filip/VM/archlinux.qcow2 > > -m 8192 -enable-kvm -M q35 -cpu host -smp > > 12,sockets=1,cores=12,threads=1 -display egl-headless,gl=on -usb > -device > > usb-tablet -bios /usr/share/ovmf/x64/OVMF_CODE.fd -boot order=c > -device > > virtio-vga,virgl=on -spice > > > disable-ticketing,image-compression=off,seamless-migration=on,unix,addr=/run/user/1000/spice.sock > > > > remote-viewer --verbose --debug --spice-debug > > spice+unix:///run/user/1000/spice.sock > > > > > > Working SDL with acceleration, also can connect with Spice but see > black > > screen but can use keyboard and mouse and see output on qemu sdl > window: > > qemu-system-x86_64 -name Arch -drive > file=/home/filip/VM/archlinux.qcow2 > > -m 8192 -enable-kvm -M q35 -cpu host -smp > > 12,sockets=1,cores=12,threads=1 -usb -device usb-tablet -bios > > /usr/share/ovmf/x64/OVMF_CODE.fd -boot order=c -device > > virtio-vga,virgl=on -spice > > > unix,addr=/run/user/1000/spice.sock,disable-ticketing,image-compression=off,seamless-migration=on > > -display sdl,gl=on > > > > > > Not working Remote Viewer opens but no output just "Connected to > graphic > > server" in the middle of the window. > > qemu-system-x86_64 -name Arch -drive > file=/home/filip/VM/archlinux.qcow2 > > -m 8192 -enable-kvm -M q35 -cpu host -smp > > 12,sockets=1,cores=12,threads=1 -usb -device usb-tablet -bios > > /usr/share/ovmf/x64/OVMF_CODE.fd -boot order=c -device > > virtio-vga,virgl=on -spice > > > gl=on,unix,addr=/run/user/1000/spice.sock,disable-ticketing,image-compression=off,seamless-migration=on > > > > remote-viewer --verbose --debug --spice-debug > > spice+unix:///run/user/1000/spice.sock > > > > I guess the problem when trying with virt-manager is the same as when > > trying with -display spice-app,gl=on. > > > > Running on Manjaro linux with Nvidia GT630 graphics and Qemu > version 4.2. > > Any help is appreciated. > > Thank you. > > I may not have followed all the details, but have you gotten it working > with any setup via libvirt, or only with qemu on the command line? It > could be libvirt is not granting access to all the needed host resources > correctly, like the drm node path. Check > /var/log/libvirt/qemu/$vmname.log and see if qemu prints and errors > > - Cole > - Cole
