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[Bug 1906181] Re: Mouse starts jumping wildly on guest desktop

From: Launchpad Bug Tracker
Subject: [Bug 1906181] Re: Mouse starts jumping wildly on guest desktop
Date: Sat, 10 Jul 2021 04:17:22 -0000

[Expired for QEMU because there has been no activity for 60 days.]

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

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  Mouse starts jumping wildly on guest desktop

Status in QEMU:

Bug description:
  Sometimes mouse goes completely crazy and starts jumping around the
  guest desktop by itself and becomes completely unusable.

  This does not happen on every boot, only sometimes. It may be caused
  by some input combination but I haven't yet found any specific cause.
  It happens soon after the desktop has been loaded and rebooting seems
  to be the only way to resolve the situation.

  Guest: Kubuntu 20.04 64-bit (live), with KDE desktop
  Host: Arch Linux, with KDE desktop
  QEMU version: 5.1.0

  QEMU start command:
  qemu-system-x86_64 -enable-kvm -m 6G -cpu host -smp 3 -cdrom 
./linux/kubuntu-20.04-desktop-amd64.iso -boot d -vga virtio -soundhw hda 
-display sdl,gl=on

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