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[Bug 1898490] Re: gtk with virtio and opengl black screen
From: |
none none |
Subject: |
[Bug 1898490] Re: gtk with virtio and opengl black screen |
Date: |
Mon, 21 Dec 2020 16:54:50 -0000 |
I am having the same issue. Tested on Xubuntu 20.10 (qemu 5.0) and
ArchLinux (qemu 5.2).
Furthermore, SDL is broken too: In principle I get some output with SDL
but its broken and not very usable. After some time (after starting the
Desktop Env. - as far as I can tell), the screen also turns black as
with GTK.
When redirecting IO to stdio I get the following error message:
## opengl error ##
gl_version 45 - core profile enabled
vrend_renderer_fill_caps: Entering with stale GL error: 1280
GLSL feature level 430
## startup command ##
qemu-system-x86_64 \
-serial stdio \
-m 8G \
-enable-kvm \
-vga virtio \
-display gtk,gl=on \
-machine q35 \
-cpu host \
-bios /usr/share/OVMF/x64/OVMF_CODE.fd \
-boot order=d \
-drive file=test.img,format=raw \
-cdrom /media/os/xubuntu-20.10-desktop-amd64.iso
## hardware of host ##
ryzen 3700x on b450 chipset
geforce 1060 with latest nvidia drivers
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https://bugs.launchpad.net/bugs/1898490
Title:
gtk with virtio and opengl black screen
Status in QEMU:
New
Bug description:
qemu-system-x86_64 -name manjaro -enable-kvm -cpu host -smp
cores=4,threads=1 -M q35 -m 8G -cdrom /mnt/Storage/ISO/manjaro-
gnome-20.0.3-minimal-200606-linux56.iso -machine type=pc,accel=kvm
-vga virtio -display sdl,gl=on Boots properly and has working 3d
acceleration with virgl.
Running qemu-system-x86_64 -name manjaro -enable-kvm -cpu host -smp
cores=4,threads=1 -M q35 -m 8G -cdrom /mnt/Storage/ISO/manjaro-
gnome-20.0.3-minimal-200606-linux56.iso -machine type=pc,accel=kvm
-vga virtio -display gtk,gl=on however, (difference being gtk instead
of sdl), the screen is black, and the vm still starts.
System Specs
Gentoo Linux 64bit
Gentoo-Sources 5.8.13 Kernel
Qemu 5.10.0-r1 compiled with USE="aio bzip2 caps curl fdt filecaps gtk jpeg
ncurses nls opengl oss pin-upstream-blobs png pulseaudio sdl seccomp slirp
spice usb usbredir vhost-net virgl vnc xattr xkb" PYTHON_TARGETS="python3_7"
QEMU_SOFTMMU_TARGETS="x86_64" QEMU_USER_TARGETS="x86_64"
Ryzen 7 2700x
Nvidia 1070ti GPU
I can confirm the same issue when using libvirt with opengl.
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