Textures are flipped vertically in kwin compositor

[Ruslan]

Steps to reproduce:
1. Start kubuntu on an intel system (EEE PC 901 in my case)
2. Make sure kwin compositor is enabled
3. Observe flipped windows. They are rendered as flipped, though real mouse-sensitive widgets are in their correct places, so it's even difficult to disable compositing without command line.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic-pae 2.6.38.2
Uname: Linux 2.6.38-8-generic-pae i686
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: kwin
DRM.card0.LVDS.1:
 status: connected
 enabled: enabled
 dpms: On
 modes: 1024x600
 edid-base64: AP///////wAGryAQAAAAAAESAQOAEwt4CvpWklZUmCQaT1QAAAABAQEBAQEBAQEBAQEBAQEBsBMAQEFYGSAYiAMBw3EAAAAYAAAADwAAAAAAAAAAAAAAAAAgAAAA/gBBVU8KICAgICAgICAgAAAA/gBBMDg5U1cwMSBWMCAKABk=
DRM.card0.VGA.1:
 status: disconnected
 enabled: disabled
 dpms: Off
 modes:
 edid-base64:
Date: Wed Jul 13 01:17:30 2011
DistUpgraded: Log time: 2011-06-22 02:44:21.450990
DistroCodename: natty
DistroVariant: kubuntu
DkmsStatus: nvidia-current, 270.41.06, 2.6.38-8-generic-pae, i686: installed
GraphicsCard:
 Intel Corporation Mobile 945GME Express Integrated Graphics Controller [8086:27ae] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:830f]
   Subsystem: ASUSTeK Computer Inc. Device [1043:830f]
InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Release i386 (20100429.4)
MachineType: ASUSTeK Computer INC. 901
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-8-generic-pae root=UUID=6eeadcbe-f344-4096-b6b0-2c56108aabd3 ro quiet splash vt.handoff=7
Renderer: Unknown
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: Upgraded to natty on 2011-06-22 (20 days ago)
XorgConf:
 Section "Device"
  Identifier "Default Device"
  Option "NoLogo" "True"
 EndSection
dmi.bios.date: 06/11/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 2103
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 901
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTek Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2103:bd06/11/2009:svnASUSTeKComputerINC.:pn901:pvrx.x:rvnASUSTeKComputerINC.:rn901:rvrx.xx:cvnASUSTekComputerINC.:ct10:cvrx.x:
dmi.product.name: 901
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty1
version.libdrm2: libdrm2 2.4.23-1ubuntu6
version.libgl1-mesa-dri: libgl1-mesa-dri 7.10.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 7.10.2-0ubuntu2
version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2
version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.14.0-4ubuntu7.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110107+b795ca6e-0ubuntu7

[Ruslan (b7-10110111)]

Here's how it looks: http://i.imgur.com/LplX5.jpg
Also, this bug wasn't seen in Ubuntu 10.04 LTS.

[Ruslan (b7-10110111)]

The bug is no longer present in Ubuntu 12.04 LTS.

PS: not sure what status I should set to this bug. Will set Fix Released.

[Tim Swait (timswait)]

This bug also affects me! I am running kubuntu 12.04 so it isn't fixed yet. Ruslan: what is the command to disable compositing? I also can't navigate menus to find it.