I was able to backtrace compiz chrashing. As suggested at nvidia forum I add in my xorg.conf Option "NvAGP" "0" and than I did compiz --replace and here is output: Checking for Xgl: not present. Detected PCI ID for VGA: Checking for texture_from_pixmap: present. Checking for non power of two support: present. Checking for Composite extension: present. Comparing resolution (1440x900) to maximum 3D texture size (8192): Passed. Checking for Software Rasterizer: Not present. Checking for nVidia: present. Checking for FBConfig: present. Checking for Xgl: not present. /usr/bin/compiz.real (video) - Warn: No 8 bit GLX pixmap format, disabling YV12 image format ) *** glibc detected *** /usr/bin/compiz.real: double free or corruption (!prev): 0x09677490 *** ======= Backtrace: ========= /lib/tls/i686/cmov/libc.so.6[0xb7b103f4] /lib/tls/i686/cmov/libc.so.6(cfree+0x96)[0xb7b12456] /usr/lib/libGL.so.1[0xb7c780e1] ======= Memory map: ======== 08048000-0807c000 r-xp 00000000 08:03 41893 /usr/bin/compiz.real 0807c000-0807d000 r--p 00033000 08:03 41893 /usr/bin/compiz.real 0807d000-0807e000 rw-p 00034000 08:03 41893 /usr/bin/compiz.real 08fac000-098b9000 rw-p 08fac000 00:00 0 [heap] b549b000-b569b000 rw-s 34f96000 00:0e 15305 /dev/nvidia0 b5837000-b583e000 r--s 00000000 08:03 146074 /usr/lib/gconv/gconv-modules.cache b583e000-b587d000 r--p 00000000 08:03 11650 /usr/lib/locale/en_US.utf8/LC_CTYPE b6400000-b6421000 rw-p b6400000 00:00 0 b6421000-b6500000 ---p b6421000 00:00 0 b659e000-b65a8000 r-xp 00000000 08:03 146515 /lib/tls/i686/cmov/libnss_files-2.8.90.so b65a8000-b65a9000 r--p 00009000 08:03 146515 /lib/tls/i686/cmov/libnss_files-2.8.90.so b65a9000-b65aa000 rw-p 0000a000 08:03 146515 /lib/tls/i686/cmov/libnss_files-2.8.90.so b65aa000-b65b3000 r-xp 00000000 08:03 146517 /lib/tls/i686/cmov/libnss_nis-2.8.90.so b65b3000-b65b4000 r--p 00008000 08:03 146517 /lib/tls/i686/cmov/libnss_nis-2.8.90.so b65b4000-b65b5000 rw-p 00009000 08:03 146517 /lib/tls/i686/cmov/libnss_nis-2.8.90.so b65b5000-b65bc000 r-xp 00000000 08:03 146513 /lib/tls/i686/cmov/libnss_compat-2.8.90.so b65bc000-b65bd000 r--p 00006000 08:03 146513 /lib/tls/i686/cmov/libnss_compat-2.8.90.so b65bd000-b65be000 rw-p 00007000 08:03 146513 /lib/tls/i686/cmov/libnss_compat-2.8.90.so b65be000-b65d3000 r-xp 00000000 08:03 146512 /lib/tls/i686/cmov/libnsl-2.8.90.so b65d3000-b65d4000 r--p 00014000 08:03 146512 /lib/tls/i686/cmov/libnsl-2.8.90.so b65d4000-b65d5000 rw-p 00015000 08:03 146512 /lib/tls/i686/cmov/libnsl-2.8.90.so b65d5000-b65d7000 rw-p b65d5000 00:00 0 b65d7000-b65ff000 r-xp 00000000 08:03 94741 /lib/libpcre.so.3.12.1 b65ff000-b6600000 r--p 00027000 08:03 94741 /lib/libpcre.so.3.12.1 b6600000-b6601000 rw-p 00028000 08:03 94741 /lib/libpcre.so.3.12.1 b6601000-b6616000 r-xp 00000000 08:03 146520 /lib/tls/i686/cmov/libpthread-2.8.90.so b6616000-b6617000 r--p 00014000 08:03 146520 /lib/tls/i686/cmov/libpthread-2.8.90.so b6617000-b6618000 rw-p 00015000 08:03 146520 /lib/tls/i686/cmov/libpthread-2.8.90.so b6618000-b661a000 rw-p b6618000 00:00 0 b661a000-b6656000 r-xp 00000000 08:03 18675 /usr/lib/libgobject-2.0.so.0.1800.2 b6656000-b6657000 r--p 0003b000 08:03 18675 /usr/lib/libgobject-2.0.so.0.1800.2 b6657000-b6658000 rw-p 0003c000 08:03 18675 /usr/lib/libgobject-2.0.so.0.1800.2 b6658000-b668e000 r-xp 00000000 08:03 70338 /lib/libdbus-1.so.3.4.0 b668e000-b668f000 r--p 00035000 08:03 70338 /lib/libdbus-1.so.3.4.0 b668f000-b6690000 rw-p 00036000 08:03 70338 /lib/libdbus-1.so.3.4.0 b6690000-b66ab000 r-xp 00000000 08:03 181309 /usr/lib/libdbus-glib-1.so.2.1.0 b66ab000-b66ac000 rw-p 0001a000 08:03 181309 /usr/lib/libdbus-glib-1.so.2.1.0 b66ac000-b66b3000 r-xp 00000000 08:03 146522 /lib/tls/i686/cmov/librt-2.8.90.so b66b3000-b66b4000 r--p 00007000 08:03 146522 /lib/tls/i686/cmov/librt-2.8.90.so b66b4000-b66b5000 rw-p 00008000 08:03 146522 /lib/tls/i686/cmov/librt-2.8.90.so b66b5000-b66b9000 r-xp 00000000 08:03 18676 /usr/lib/libgthread-2.0.so.0.1800.2 b66b9000-b66ba000 r--p 00003000 08:03 18676 /usr/lib/libgthread-2.0.so.0.1800.2 b66ba000-b66bb000 rw-p 00004000 08:03 18676 /usr/lib/libgthread-2.0.so.0.1800.2 b66bb000-b6704000 r-xp 00000000 08:03 70357 /usr/lib/libORBit-2.so.0.1.0 b6704000-b670c000 r--p 00049000 08:03 70357 /usr/lib/libORBit-2.so.0.1.0 b670c000-b670e000 rw-p 00051000 08:03 70357 /usr/lib/libORBit-2.so.0.1.0 b670e000-b67c3000 r-xp 00000000 08:03 18673 /usr/lib/libglib-2.0.so.0.1800.2 b67c3000-b67c4000 r--p 000b4000 08:03 18673 /usr/lib/libglib-2.0.so.0.1800.2 b67c4000-b67c5000 rw-p 000b5000 08:03 18673 /usr/lib/libglib-2.0.so.0.1800.2 b67c5000-b67f3000 r-xp 00000000 08:03 33252 /usr/lib/libgconf-2.so.4.1.5 b67f3000-b67f4000 ---p 0002e000 08:03 33252 /usr/lib/libgconf-2.so.4.1.5 b67f4000-b67f5000 r--p 0002e000 08:03 33252 /usr/lib/libgconf-2.so.4.1.5 b67f5000-b67f7000 rw-p 0002f000 08:03 33252 /usr/lib/libgconf-2.so.4.1.5 b6807000-b681b000 r-xp 00000000 08:03 9477 /usr/lib/libcompizconfig.so.0.0.0 b681b000-b681c000 r--p 00013000 08:03 9477 /usr/lib/libcompizconfig.so.0.0.0 b681c000-b681d000 rw-p 00014000 08:03 9477 /usr/lib/libcompizconfig.so.0.0.0 b681d000-b6820000 r-xp 00000000 08:03 18674 /usr/lib/libgmodule-2.0.so.0.1800.2 b6820000-b6821000 r--p 00002000 08:03 18674 /usr/lib/libgmodule-2.0.so.0.1800.2 b6821000-b6822000 rw-p 00003000 08:03 18674 /usr/lib/libgmodule-2.0.so.0.1800.2 b6822000-b682b000 r-xp 00000000 08:03 27070 /usr/lib/compizconfig/backends/libgconf.so b682b000-b682c000 r--p 00008000 08:03 27070 /usr/lib/compizconfig/backends/libgconf.so b682c000-b682d000 rw-p 00009000 08:03 27070 /usr/lib/compizconfig/backends/libgconf.so b6833000-b6a33000 rw-s 34a3c000 00:0e 15305 /dev/nvidia0 b6b33000-b6b34000 rw-s fdc06000 00:0e 15305 /dev/nvidia0 b6c70000-b6c7d000 r-xp 00000000 08:03 197461 /lib/libgcc_s.so.1 b6c7d000-b6c7e000 r--p 0000c000 08:03 197461 /lib/libgcc_s.so.1 b6c7e000-b6c7f000 rw-p 0000d000 08:03 197461 /lib/libgcc_s.so.1 b6c8f000-b6cc5000 rw-p b6c8f000 00:00 0 b6cc5000-b6ce7000 rw-s 00000000 00:09 32769 /SYSV00000000 (deleted) b6ce7000-b6ce8000 rw-p b6ce7000 00:00 0 b6ce8000-b6ce9000 r-xp 00000000 08:03 57331 /usr/lib/tls/libnvidia-tls.so.177.82 b6ce9000-b6cea000 rw-p 00000000 08:03 57331 /usr/lib/tls/libnvidia-tls.so.177.82 b6cea000-b6ceb000 rw-p b6cea000 00:00 0 b6ceb000-b78b3000 r-xp 00000000 08:03 109207 /usr/lib/libGLcore.so.177.82 b78b3000-b7a57000 rwxp 00bc8000 08:03 109207 /usr/lib/libGLcore.so.177.82 b7a57000-b7a62000 rwxp b7a57000 00:00 0 b7a62000-b7a76000 r-xp 00000000 08:03 6466 /usr/lib/libz.so.1.2.3.3 b7a76000-b7a78000 rw-p 00013000 08:03 6466 /usr/lib/libz.so.1.2.3.3 b7a78000-b7a80000 r-xp 00000000 08:03 22065 /usr/lib/libXrender.so.1.3.0 b7a80000-b7a81000 r--p 00007000 08:03 22065 /usr/lib/libXrender.so.1.3.0 b7a81000-b7a82000 rw-p 00008000 08:03 22065 /usr/lib/libXrender.so.1.3.0 b7a82000-b7a86000 r-xp 00000000 08:03 104575 /usr/lib/libXdmcp.so.6.0.0 b7a86000-b7a87000 rw-p 00003000 08:03 104575 /usr/lib/libXdmcp.so.6.0.0 b7a87000-b7a89000 r-xp 00000000 08:03 103504 /usr/lib/libXau.so.6.0.0 b7a89000-b7a8a000 rw-p 00001000 08:03 103504 /usr/lib/libXau.so.6.0.0 b7a8a000-b7a8b000 rw-p b7a8a000 00:00 0 b7a8b000-b7a8c000 r-xp 00000000 08:03 34011 /usr/lib/libxcb-xlib.so.0.0.0 b7a8c000-b7a8d000 r--p 00000000 08:03 34011 /usr/lib/libxcb-xlib.so.0.0.0 b7a8d000-b7a8e000 rw-p 00001000 08:03 34011 /usr/lib/libxcb-xlib.so.0.0.0 b7a8e000-b7a9b000 r-xp 00000000 08:03 250427 /usr/lib/libXext.so.6.4.0 b7a9b000-b7a9d000 rw-p 0000c000 08:03 250427 /usr/lib/libXext.so.6.4.0 b7a9d000-b7a9f000 r-xp 00000000 08:03 146509 /lib/tls/i686/cmov/libdl-2.8.90.so b7a9f000-b7aa0000 r--p 00001000 08:03 146509 /lib/tls/i686/cmov/libdl-2.8.90.so b7aa0000-b7aa1000 rw-p 00002000 08:03 146509 /lib/tls/i686/cmov/libdl-2.8.90.so b7aa1000-b7bf9000 r-xp 00000000 08:03 146124 /lib/tls/i686/cmov/libc-2.8.90.so b7bf9000-b7bfb000 r--p 00158000 08:03 146124 /lib/tls/i686/cmov/libc-2.8.90.so b7bfb000-b7bfc000 rw-p 0015a000 08:03 146124 /lib/tls/i686/cmov/libc-2.8.90.so b7bfc000-b7bff000 rw-p b7bfc000 00:00 0 b7bff000-b7c23000 r-xp 00000000 08:03 146510 /lib/tls/i686/cmov/libm-2.8.90.so b7c23000-b7c24000 r--p 00023000 08:03 146510 /lib/tls/i686/cmov/libm-2.8.90.so b7c24000-b7c25000 rw-p 00024000 08:03 146510 /lib/tls/i686/cmov/libm-2.8.90.so b7c25000-b7cac000 r-xp 00000000 08:03 104772 /usr/lib/libGL.so.177.82 b7cac000-b7cc6000 rwxp 00087000 08:03 104772 /usr/lib/libGL.so.177.82 b7cc6000-b7cc8000 rwxp b7cc6000 00:00 0 b7cc8000-b7cc9000 rw-p b7cc8000 00:00 0 b7cc9000-b7cd1000 r-xp 00000000 08:03 8564 /usr/lib/libstartup-notification-1.so.0.0.0 b7cd1000-b7cd2000 rw-p 00007000 08:03 8564 /usr/lib/libstartup-notification-1.so.0.0.0 b7cd2000-b7e07000 r-xp 00000000 08:03 13266 /usr/lib/libxml2.so.2.6.32 b7e07000-b7e08000 ---p 00135000 08:03 13266 /usr/lib/libxml2.so.2.6.32 b7e08000-b7e0c000 r--p 00135000 08:03 13266 /usr/lib/libxml2.so.2.6.32 b7e0c000-b7e0d000 rw-p 00139000 08:03 13266 /usr/lib/libxml2.so.2.6.32 b7e0d000-b7e0e000 rw-p b7e0d000 00:00 0 b7e0e000-b7e43000 r-xp 00000000 08:03 26085 /usr/lib/libxslt.so.1.1.24 b7e43000-b7e44000 r--p 00034000 08:03 26085 /usr/lib/libxslt.so.1.1.24 b7e44000-b7e45000 rw-p 00035000 08:03 26085 /usr/lib/libxslt.so.1.1.24 b7e45000-b7e5a000 r-xp 00000000 08:03 7752 /usr/lib/libICE.so.6.3.0 b7e5a000-b7e5b000 rw-p 00014000 08:03 7752 /usr/lib/libICE.so.6.3.0 b7e5b000-b7e5d000 rw-p b7e5b000 00:00 0 b7e5d000-b7e64000 r-xp 00000000 08:03 20850 /usr/lib/libSM.so.6.0.0 b7e64000-b7e65000 r--p 00006000 08:03 20850 /usr/lib/libSM.so.6.0.0 b7e65000-b7e66000 rw-p 00007000 08:03 20850 /usr/lib/libSM.so.6.0.0 b7e66000-b7e6e000 r-xp 00000000 08:03 7795 /usr/lib/libXcursor.so.1.0.2 b7e6e000-b7e6f000 rw-p 00007000 08:03 7795 /usr/lib/libXcursor.so.1.0.2 b7e6f000-b7e70000 rw-p b7e6f000 00:00 0 b7e70000-b7e72000 r-xp 00000000 08:03 18767 /usr/lib/libXinerama.so.1.0.0 b7e72000-b7e73000 rw-p 00001000 08:03 18767 /usr/lib/libXinerama.so.1.0.0 b7e73000-b7e78000 r-xp 00000000 08:03 18867 /usr/lib/libXrandr.so.2.1.0 b7e78000-b7e79000 r--p 00005000 08:03 18867 /usr/lib/libXrandr.so.2.1.0 b7e79000-b7e7a000 rw-p 00006000 08:03 18867 /usr/lib/libXrandr.so.2.1.0 b7e7a000-b7e7e000 r-xp 00000000 08:03 7805 /usr/lib/libXfixes.so.3.1.0 b7e7e000-b7e7f000 rw-p 00003000 08:03 7805 /usr/lib/libXfixes.so.3.1.0 b7e7f000-b7e81000 r-xp 00000000 08:03 9790 /usr/lib/libXdamage.so.1.1.0 b7e81000-b7e82000 rw-p 00001000 08:03 9790 /usr/lib/libXdamage.so.1.1.0 b7e82000-b7e84000 r-xp 00000000 08:03 18489 /usr/lib/libXcomposite.so.1.0.0 b7e84000-b7e85000 r--p 00001000 08:03 18489 /usr/lib/libXcomposite.so.1.0.0 b7e85000-b7e86000 rw-p 00002000 08:03 18489 /usr/lib/libXcomposite.so.1.0.0 b7e86000-b7e9d000 r-xp 00000000 08:03 104630 /usr/lib/libxcb.so.1.0.0 b7e9d000-b7e9e000 r--p 00016000 08:03 104630 /usr/lib/libxcb.so.1.0.0 b7e9e000-b7e9f000 rw-p 00017000 08:03 104630 /usr/lib/libxcb.so.1.0.0 b7e9f000-b7ea0000 rw-p b7e9f000 00:00 0 b7ea0000-b7f8b000 r-xp 00000000 08:03 94661 /usr/lib/libX11.so.6.2.0 b7f8b000-b7f8c000 r--p 000ea000 08:03 94661 /usr/lib/libX11.so.6.2.0 b7f8c000-b7f8e000 rw-p 000eb000 08:03 94661 /usr/lib/libX11.so.6.2.0 b7f8e000-b7f8f000 rw-p b7f8e000 00:00 0 b7f8f000-b7f90000 r-xp 00000000 08:03 23834 /usr/lib/libX11-xcb.so.1.0.0 b7f90000-b7f91000 r--p 00000000 08:03 23834 /usr/lib/libX11-xcb.so.1.0.0 b7f91000-b7f92000 rw-p 00001000 08:03 23834 /usr/lib/libX11-xcb.so.1.0.0 b7f9e000-b7f9f000 rw-s 344fc000 00:0e 15305 /dev/nvidia0 b7f9f000-b7fa0000 rw-s fd060000 00:0e 15305 /dev/nvidia0 b7fa2000-b7fa4000 rw-p b7fa2000 00:00 0 b7fa4000-b7fbe000 r-xp 00000000 08:03 176141 /lib/ld-2.8.90.so b7fbe000-b7fbf000 r-xp b7fbe000 00:00 0 [vdso] b7fbf000-b7fc0000 r--p 0001a000 08:03 176141 /lib/ld-2.8.90.so b7fc0000-b7fc1000 rw-p 0001b000 08:03 176141 /lib/ld-2.8.90.so bfda1000-bfdbf000 rwxp bffe0000 00:00 0 [stack] bfdbf000-bfdc1000 rw-p bfffe000 00:00 0 Aborted