[Qemu-devel] [Bug 504368] Re: sdl window intermittently scales instead of resizing

[Lekensteyn]

Scaling can be triggered by:

- Pressing ctrl-alt-{minus,plus} (on certain keyboard layouts)
- a SDL_VIDEORESIZE event

SDL_VIDEORESIZE is always sent on an X ConfigureNotify event when a
SDL_VideoSurface is active. (SDL_VideoSurface is NULL if a resize was
done in SDL_SetVideoMode).

So it really must be a window manager or something sending this resize
event. What WM are you using?

Notes, SDL_VIDEORESIZE (and other events) may be eaten:
- in the very early start-up stage[1] (causing the issue mentioned in comment 
13)
- during switches to and from fullscreen
- (some other paths that do not affect QEMU)

 [1]: http://bugzilla.libsdl.org/show_bug.cgi?id=1859

** Bug watch added: bugzilla.libsdl.org/ #1859
   http://bugzilla.libsdl.org/show_bug.cgi?id=1859

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https://bugs.launchpad.net/bugs/504368

Title:
  sdl window intermittently scales instead of resizing

Status in QEMU:
  Triaged
Status in “qemu-kvm” package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: qemu-kvm

  Normally, the SDL output window for a VM resizes to match the VM's
  resolution.  However, intermittently the output is instead scaled
  within the window.  I can't seem to find any pattern to when the
  output is scaled versus when the window is resized.  I would prefer
  that the window be resized as needed to display the VM in a 1:1
  manner.

  ProblemType: Bug
  Architecture: amd64
  Date: Thu Jan  7 10:30:10 2010
  DistroRelease: Ubuntu 9.10
  InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
  KvmCmdLine:
   UID        PID  PPID  C    SZ   RSS PSR STIME TTY          TIME CMD
   root     27618     1 38 241752 804668 1 10:05 ?        00:09:39 /usr/bin/kvm 
-S -M pc-0.11 -cpu qemu32 -m 768 -smp 1 -name win2k3 -uuid 
da414aa0-f18a-7a02-3d1b-1dbf13137bc9 -monitor 
unix:/var/run/libvirt/qemu/win2k3.monitor,server,nowait -localtime -boot c 
-drive file=/media/qpc-devel/testing/win2k3/testing.ovl,if=ide,index=0,boot=on 
-drive 
file=/media/qpc-devel/testing/win2k3/../../isos/en_win_srv_2003_r2_standard_cd1.iso,if=ide,media=cdrom,index=2
 -net nic,macaddr=00:16:3e:d6:f5:60,vlan=0,model=ne2k_pci,name=ne2k_pci.0 -net 
tap,fd=18,vlan=0,name=tap.0 -serial pty -parallel none -usb -usbdevice tablet 
-vga cirrus
   root     28306     1 54 177732 545520 1 10:28 ?        00:00:49 /usr/bin/kvm 
-S -M pc-0.11 -cpu qemu32 -m 512 -smp 1 -name win2k -uuid 
153d6125-acb5-70bc-c7d2-bcbf87c5be86 -monitor 
unix:/var/run/libvirt/qemu/win2k.monitor,server,nowait -localtime -boot c 
-drive file=/media/qpc-devel/testing/win2k/testing.ovl,if=ide,index=0,boot=on 
-drive 
file=/media/qpc-devel/testing/win2k/../../isos/windows_2000.iso,if=ide,media=cdrom,index=2
 -net nic,macaddr=68:29:6b:13:50:c6,vlan=0,model=ne2k_pci,name=ne2k_pci.0 -net 
tap,fd=19,vlan=0,name=tap.0 -serial pty -parallel none -usb -usbdevice tablet 
-vga cirrus
  NonfreeKernelModules: nvidia
  Package: kvm 1:84+dfsg-0ubuntu16+0.11.0+0ubuntu6.3
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-16-generic 
root=UUID=30218f9a-6f90-4eab-9ba5-f54897e842cb ro quiet splash
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
  SourcePackage: qemu-kvm
  Uname: Linux 2.6.31-16-generic x86_64
  dmi.bios.date: 02/20/2008
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 7LETB2WW (2.12 )
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: 
dmi:bvnLENOVO:bvr7LETB2WW(2.12):bd02/20/2008:svnLENOVO:pn:pvrThinkPadT61p:rvnLENOVO:rn:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.version: ThinkPad T61p
  dmi.sys.vendor: LENOVO

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