[Bug 1818398] Re: No evdev mouse passthrough with virtio-vga or kvm

[Thomas Huth]

This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'expired' now.
Please continue with the discussion here:

 https://gitlab.com/qemu-project/qemu/-/issues/165


** Changed in: qemu
       Status: New => Expired

** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #165
   https://gitlab.com/qemu-project/qemu/-/issues/165

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https://bugs.launchpad.net/bugs/1818398

Title:
  No evdev mouse passthrough with virtio-vga or kvm

Status in QEMU:
  Expired

Bug description:
  Hi,

  Using qemu version 3.1.0-1 on a host with the latest Archlinux 64-bit
  distribution, and running the same OS as guest, the mouse doesn't work
  when using both evdev passthrough and virtio-vga, or when using both
  evdev passthrough and kvm.

  The following command line runs a machine that does not receive any mouse 
event:
  qemu-system-x86_64 -machine type=q35,accel=kvm -cpu host -accel kvm -boot 
order=dc,menu=on -m size=2048 -net nic -device virtio-vga -device intel-hda 
-name Linux -drive file=/mnt/data/nobody/linux/arch.img,if=virtio -display 
sdl,gl=on -full-screen -net user -D /dev/null -rtc 
base=utc,clock=host,driftfix=slew -nodefaults -object 
input-linux,id=kbd1,evdev=/dev/input/event6,grab_all=on,repeat=on -object 
input-linux,id=mouse1,evdev=/dev/input/event7

  But with this command line, removing virtio-vga and kvm, the mouse works as 
expected:
  qemu-system-x86_64 -machine type=q35 -boot order=dc,menu=on -m size=2048 -net 
nic -device cirrus-vga -device intel-hda -name Linux -drive 
file=/mnt/data/nobody/linux/arch.img,if=virtio -display sdl,gl=on -full-screen 
-net user -D /dev/null -rtc base=utc,clock=host,driftfix=slew -nodefaults 
-object input-linux,id=kbd1,evdev=/dev/input/event6,grab_all=on,repeat=on 
-object input-linux,id=mouse1,evdev=/dev/input/event7

  Note: Passing a keyboard by evdev in the same way always works, the
  problem is mouse specific.

  Thanks in advance for the analysis,
  gatestallman

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