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

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

[Chen Zhang]

Hi, I have a hack for this issue.

In general, the gvt-g is buggy in that the kernel driver i915 failed to
provide the actual resolution for the vgpu and always report the largest
available one.

The following patch modified the gtk-egl implementation for DMA Buf
mode, to convert mouse movement/tablet position to the scaled window
coordinates.

See https://pastebin.com/96iBLdDx

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

[Chen Zhang]

Hi there,

Would anyone be so kind to review my patch?

Thanks.


https://lists.nongnu.org/archive/html/qemu-devel/2018-10/msg06806.html

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

[tinywrkbee]

Chen, have you seen the following bug report? https://bugs.launchpad.net/qemu/+bug/1592351
See my comment there, with recent git build of 3.1.0 I don't have a pointer offset issue.

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You received this bug notification because you are a member of qemu-
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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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[Bug 1793859] Re: GTK display and mouse input area scaling fails when using vfio-pci device

[UserPC2021]

Perhaps this is due to this issue https://github.com/intel/gvt-
linux/issues/71

https://yadi.sk/i/Ejg_6JJEBIc-Zw

** Bug watch added: github.com/intel/gvt-linux/issues #71
   https://github.com/intel/gvt-linux/issues/71

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
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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[Bug 1793859] Re: GTK display and mouse input area scaling fails when using vfio-pci device

[Thomas Huth]

The QEMU project is currently considering to move its bug tracking to
another system. For this we need to know which bugs are still valid
and which could be closed already. Thus we are setting older bugs to
"Incomplete" now.

If you still think this bug report here is valid, then please switch
the state back to "New" within the next 60 days, otherwise this report
will be marked as "Expired". Or please mark it as "Fix Released" if
the problem has been solved with a newer version of QEMU already.

Thank you and sorry for the inconvenience.


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

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1793859

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

Status in QEMU:
  Incomplete

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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[Bug 1793859] Re: GTK display and mouse input area scaling fails when using vfio-pci device

[Thomas Huth]

** Bug watch removed: github.com/intel/gvt-linux/issues #71
   https://github.com/intel/gvt-linux/issues/71

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1793859

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

Status in QEMU:
  Incomplete

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

To manage notifications about this bug go to:
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[Bug 1793859] Re: GTK display and mouse input area scaling fails when using vfio-pci device

[Launchpad Bug Tracker]

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

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

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1793859

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

Status in QEMU:
  Expired

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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