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[Qemu-devel] [Bug 1654826] Re: Holding key down using input-linux freeze


From: mutedbytes
Subject: [Qemu-devel] [Bug 1654826] Re: Holding key down using input-linux freezes guest
Date: Sun, 08 Jan 2017 10:01:51 -0000

Thought I might add:

The qemu command line option equivalents for mouse and keyboard:

-object 
input-linux,id=kbd,evdev=/dev/input/by-path/platform-i8042-serio-0-event-kbd,repeat=on,grab_all=on
 \
-object 
input-linux,id=ms1,evdev=/dev/input/by-id/usb-ROCCAT_ROCCAT_Kone_Pure-event-mouse

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https://bugs.launchpad.net/bugs/1654826

Title:
  Holding key down using input-linux freezes guest

Status in QEMU:
  New

Bug description:
  Qemu release version 2.8.0
  KVM, kernel 4.9.1

  When using the -object input-linux capability in qemu for passthrough
  of input/evdev devices, I found that when a key is held for a few
  seconds or more (such as ctrl key), the guest system freezes until the
  key is released. In some cases, mouse control is also lost following
  one of these "freezes". I also noticed that one of the four cpu cores
  I have the guest pinned to ramps to 100% during these freezes.

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