I found this issue: Change virtualization-options for nixos-rebuild build-vm · Issue #59219 · NixOS/nixpkgs · GitHub
with the answer/workaround to use QEMU_OPTS environment varibables. so i run
QEMU_OPTS="-vga none -device virtio-gpu-pci" QEMU_NET_OPTS="hostfwd=tcp::2222-:22" ./result/bin/run-nixos-vm
Unfortunately it doesn’t solve the issue that sway doesn’t run in qemu it gives the following log messages:
Jul 11 03:34:44 keintop gdm-password][1724]: gkr-pam: gnome-keyring-daemon started properly and unlocked keyring
Jul 11 03:34:44 keintop kernel: rfkill: input handler enabled
Jul 11 03:34:44 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: libEGL warning: DRI2: failed to create dri screen
Jul 11 03:34:44 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.112 [ERROR] [wlr] [EGL] command: eglInitialize, error: EGL_NOT_INITIALIZED (0x3001), message: "DRI2: failed to create screen"
Jul 11 03:34:44 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: libEGL warning: NEEDS EXTENSION: falling back to kms_swrast
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.945 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.945 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.945 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.946 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.947 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.948 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.949 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.950 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.951 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.951 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.951 [ERROR] [wlr] [render/allocator/gbm.c:114] gbm_bo_create failed
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.951 [ERROR] [wlr] [render/swapchain.c:109] Failed to allocate buffer
Jul 11 03:34:45 keintop /nix/store/5h70fw6kdfhbipqwqxdxcb2kg6gqdsc4-gdm-42.0/libexec/gdm-wayland-session[1742]: 00:00:00.951 [ERROR] [sway/config/output.c:501] Failed to commit output Virtual-1
Jul 11 03:34:55 keintop polkitd[771]: Unregistered Authentication Agent for unix-session:c2 (system bus name :1.59, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)