[Qemu-devel] [Bug 1793859] [NEW] GTK display and mouse input area scaling fails when using vfio-pci device

[Ilpo Kaartinen]

Public bug reported:

Version qemu 3.0.0-1 running on Arch. Found on Windows 8.1 and Windows
10 VM's when using Intel gvt-g device.

While in fullscreen the GTK display is scaled larger than the x11 screen
or virtual machine resolution. Without choosing zoom-to-fit portions of
the VM display are not shown on x11 screen regardless of the VM
resolution. When zoom-to-fit is done the mouse that's shown on screen
and actual input are off sync. The mouse can wander off screen when
going left and down.

This message is shown when changing from gxl-vga to vfio-pci in view menu. 
(qemu-system-x86_64:6472): Gtk-WARNING **: 09:50:06.663: drawing failure for 
widget 'GtkDrawingArea': NULL pointer
(qemu-system-x86_64:6472): Gtk-WARNING **: 09:50:06.664: drawing failure for 
widget 'GtkNotebook': NULL pointer
(qemu-system-x86_64:6472): Gtk-WARNING **: 09:50:06.664: drawing failure for 
widget 'GtkBox': NULL pointer
(qemu-system-x86_64:6472): Gtk-WARNING **: 09:50:06.664: drawing failure for 
widget 'GtkWindow': NULL pointer

** Affects: qemu
     Importance: Undecided
         Status: New


** Tags: gtk gvt-g

** Summary changed:

- GTK display scaling fails when using vfio-pci device
+ GTK display and mouse input area scaling fails when using vfio-pci device

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https://bugs.launchpad.net/bugs/1793859

Title:
  GTK display and mouse input area scaling fails when using vfio-pci
  device

Status in QEMU:
  New

Bug description:
  Version qemu 3.0.0-1 running on Arch. Found on Windows 8.1 and Windows
  10 VM's when using Intel gvt-g device.

  While in fullscreen the GTK display is scaled larger than the x11
  screen or virtual machine resolution. Without choosing zoom-to-fit
  portions of the VM display are not shown on x11 screen regardless of
  the VM resolution. When zoom-to-fit is done the mouse that's shown on
  screen and actual input are off sync. The mouse can wander off screen
  when going left and down.

  This message is shown when changing from gxl-vga to vfio-pci in view menu. 
  (qemu-system-x86_64:6472): Gtk-WARNING **: 09:50:06.663: drawing failure for 
widget 'GtkDrawingArea': NULL pointer
  (qemu-system-x86_64:6472): Gtk-WARNING **: 09:50:06.664: drawing failure for 
widget 'GtkNotebook': NULL pointer
  (qemu-system-x86_64:6472): Gtk-WARNING **: 09:50:06.664: drawing failure for 
widget 'GtkBox': NULL pointer
  (qemu-system-x86_64:6472): Gtk-WARNING **: 09:50:06.664: drawing failure for 
widget 'GtkWindow': NULL pointer

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