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+id = 2637
+title = "ubuntu 22.04 virtio-vga-gl notwork"
+state = "opened"
+created_at = "2024-10-24T05:23:19.995Z"
+closed_at = "n/a"
+labels = ["device:graphics", "device:virtio"]
+url = "https://gitlab.com/qemu-project/qemu/-/issues/2637"
+host-os = "- OS/kernel version:"
+host-arch = "- QEMU flavor:"
+qemu-version = "- QEMU command line:"
+guest-os = "- OS/kernel version:"
+guest-arch = "## Description of problem"
+description = """"""
+reproduce = """1.qemu-system-x86_64 \\
+    -m 2048 \\
+    -smp 2 \\
+    -hda /home/perilla/virt/redroid.qcow2 \\
+    -boot d \\
+    -net nic -net user,hostfwd=tcp::1122-:22,hostfwd=tcp::19000-:9000,hostfwd=tcp::15555-:5555 \\
+    -vnc :0 \\
+    -device virtio-vga-gl \\
+    -display sdl,gl=on \\
+    -enable-kvm 
+
+the machine can't startup normally
+
+host console output:
+qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]\\n
+qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]\\n
+gl_version 46 - core profile enabled\\n
+
+after`gl_version` line, startup prograss stopped![image]
+
+vm console output:
+it seems different every startup progress
+
+first time:
+
+![image](/uploads/4bbdb263db3faa812aeb568e7e5d2c9f/image.png){width=764 height=467}
+second time:
+
+![image](/uploads/0d7c92b8f5b2e5241b15da1681b10eda/image.png){width=780 height=415}
+
+2.
+3."""
+additional = """when I use -device virtio-gpu, it works fine 
+qemu-system-x86_64 \\
+    -m 2048 \\
+    -smp 2 \\
+    -hda /home/username/virt/redroid.qcow2 \\
+    -boot d \\
+    -net nic -net user,hostfwd=tcp::1122-:22,hostfwd=tcp::19000-:9000,hostfwd=tcp::15555-:5555 \\
+    -vnc :0 \\
+    -device virtio-gpu \\
+    -display sdl,gl=on \\
+    -enable-kvm \\
+     -device qxl
+
+host console output:\\n
+qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]\\n
+qemu-system-x86_64: warning: host doesn't support requested feature: CPUID.80000001H:ECX.svm [bit 2]\\n"""