Screen stays dark after suspend

When I wakr my notbook after suspend screen stays dark. Starting new X session handles this

ProblemType: Crash
Architecture: i386
CrashCounter: 1
Date: Thu Mar 27 09:49:46 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/compiz.real
Package: compiz-core 1:0.7.2-0ubuntu2
PackageArchitecture: i386
ProcCmdline: /usr/bin/compiz.real --ignore-desktop-hints --replace --indirect-rendering --sm-client-id default0 ccp
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: compiz
Stacktrace:
 #0 0x08055a4d in ?? ()
 #1 0x0807b6c0 in ?? ()
 #2 0x00000003 in ?? ()
 #3 0x00000034 in ?? ()
 #4 0x00000000 in ?? ()
StacktraceTop:
 ?? ()
 ?? ()
 ?? ()
 ?? ()
 ?? ()
Title: compiz.real crashed with SIGSEGV
Uname: Linux 2.6.24.3 i686
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev sambashare scanner video