I have had this issue happen multiple times on multiple versions of kvm with both ubuntu and cantos. I just the other day tried installing win8.1 again for testing and ran across ruban's post. this happens in win10 as well and I think I had seen it in win7.
I reinstalled another win8 vm from a usb instead of an iso later that day and realized that the mouse was working normally which surprised me. I then manually installed the virtio nic driver. the system still worked normally. I then installed the baloon driver and that make the mouse stop working untill i pulled the flash drive. after changing the power settings the mouse would again start working with the flash drive. I have always used virt manager for connecting to the servers and spice for the display ** Changed in: qemu Status: Expired => Confirmed ** Changed in: qemu (Ubuntu) Status: Expired => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1323758 Title: Mouse stops working when connected usb-storage-device To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1323758/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs