window flashes on startup with SDL

(Marking confirmed after confirmation from Jamie)

(Marking low priority as it can be worked around using vnc or simply ignored, and the vm boots anyway)

It seems to me that this has something to do with the desktop setup. My colleagues and I are all using qemu on Precise, but I am the only one running Unity (and the 3D layer, Compiz?). I will try how things are on my non-twinview laptop with an almost identical setup.

I forgot to mention that of my colleagues I seem to be the only one having this problem.

I think I managed to find a way to reproduce this problem:

1 Get a PC capable of doing NVidia TwinView
2 Install Vanilla Ubuntu Precise
3 Configure Xorg to do TwinView
4 Log in (Unity 3D) and use QEmu

My laptop (non-twinview, Precise, Unity) does not have this problem, while I can reproduce the flashing/resizing screen on two PC (twinview, Precise, Unity).

I will use apport-collect to attach my system information

ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
DistroRelease: Ubuntu 12.04
KvmCmdLine: Error: command ['ps', '-C', 'kvm', '-F'] failed with exit code 1: UID PID PPID C SZ RSS PSR STIME TTY TIME CMD
MachineType: System manufacturer System Product Name
NonfreeKernelModules: nvidia
Package: qemu-kvm 1.0+noroms-0ubuntu14
PackageArchitecture: amd64
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-26-generic root=/dev/mapper/vg0-root ro quiet splash apparmor=0 vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Tags: precise running-unity
Uname: Linux 3.2.0-26-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout libvirtd lpadmin plugdev sambashare
dmi.bios.date: 06/11/2010
dmi.bios.vendor: Phoenix Technologies, LTD
dmi.bios.version: ASUS M3N-HD/HDMI ACPI BIOS Revision 2703
dmi.board.name: M3N-HD/HDMI
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: 1.XX
dmi.chassis.asset.tag: 123456789000
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvrASUSM3N-HD/HDMIACPIBIOSRevision2703:bd06/11/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnM3N-HD/HDMI:rvr1.XX:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

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This bug makes qemu unusuable on ubuntu via remote-x, since it resizes the window hundreds or thousands of times and each time requires the remote system to redraw the display, which can take several seconds each time.