compiz assert failure: compiz: intel_tex_image.c:726: intelSetTexBuffer2: La declaración `!texImage->Data' no se cumple.

[jc-sama]

Binary package hint: unity

On ubuntu 10.10 i used to connect an extra monitor to display a wide desktop, now with ubuntu 11.04 beta i can't do it, the image gets blurry and when i try to go back the desktop gets froze, and it is just when i disconnect the monitor when ubuntu reacts

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: unity 3.8.2-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
Architecture: i386
AssertionMessage: compiz: intel_tex_image.c:726: intelSetTexBuffer2: La declaración `!texImage->Data' no se cumple.
CrashCounter: 1
Date: Mon Apr 4 12:26:43 2011
EcryptfsInUse: Yes
ExecutablePath: /usr/bin/compiz
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta i386 (20110330)
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=es_MX:en
 LANG=es_MX.UTF-8
 SHELL=/bin/bash
Signal: 6
SourcePackage: unity
StacktraceTop:
 __kernel_vsyscall ()
 raise () from /lib/i386-linux-gnu/libc.so.6
 abort () from /lib/i386-linux-gnu/libc.so.6
 __assert_fail () from /lib/i386-linux-gnu/libc.so.6
 intelSetTexBuffer2 () from /usr/lib/dri/i915_dri.so
Title: compiz assert failure: compiz: intel_tex_image.c:726: intelSetTexBuffer2: La declaración `!texImage->Data' no se cumple.
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

StacktraceTop:
 __kernel_vsyscall ()
 raise (sig=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
 abort () at abort.c:92
 __assert_fail (assertion=0x104ec86 "!texImage->Data", file=0x104ec74 "intel_tex_image.c", line=726, function=0x104eeee "intelSetTexBuffer2") at assert.c:81
 intelSetTexBuffer2 (pDRICtx=0x9333a50, target=3553, texture_format=8409, dPriv=0xa106898) at intel_tex_image.c:726