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authorChristian Krinitsin <mail@krinitsin.com>2025-06-01 21:35:14 +0200
committerChristian Krinitsin <mail@krinitsin.com>2025-06-01 21:35:14 +0200
commit3e4c5a6261770bced301b5e74233e7866166ea5b (patch)
tree9379fddaba693ef8a045da06efee8529baa5f6f4 /gitlab/issues_text/target_missing/host_missing/accel_missing/2949
parente5634e2806195bee44407853c4bf8776f7abfa4f (diff)
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qemu-analysis-3e4c5a6261770bced301b5e74233e7866166ea5b.zip
clean up repository
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-VNC: virtio-gpu outputs not displayed by VNC client
-Description of problem:
-When combining virtio-gpu multiple outputs with VNC display, only output 0 is enabled.
-Additional output are enabled when VNC client sent SetDesktopSize command.
-
-The following statement assumes that all displays (gtk, sdl) are disabled except VNC:
-
-#
-Steps to reproduce:
-1. Start Qemu
-2. Start a VNC client on 5900
-3. Start the second VNC client on 5901
-Additional information:
-The state of an output is controlled by the [enabled_output_bitmask](https://gitlab.com/qemu-project/qemu/-/blob/master/include/hw/virtio/virtio-gpu.h#L158) which is initialized to `1` at [device realization](https://gitlab.com/qemu-project/qemu/-/blob/master/hw/display/virtio-gpu-base.c#L204), thus VNC0 is always enabled.
-
-Other devices will set this parameter during inititliazation by calling [dpy_set_ui_info](https://gitlab.com/qemu-project/qemu/-/blob/master/ui/console.c#L754) which schedules a call to [virtio_gpu_ui_info](https://gitlab.com/qemu-project/qemu/-/blob/master/hw/display/virtio-gpu-base.c#L89). However VNC calls this function only when handling [VNC_MSG_CLIENT_SET_DESKTOP_SIZE](https://gitlab.com/qemu-project/qemu/-/blob/master/ui/vnc.c#L2607) client command.\
-If the client does not support this command or never changes the size of the default window, the respective display will remain disabled.