After doing some testing on my system, I realized that this problem occurs if you have xorg-edgers PPA activated. Purging the PPA solves the problem. This is the list of packages that the xorg-edgers PPA upgrades:
intel-gpu-tools (1.0.2+git20100324-0ubuntu1) to 1.0.2+git20110729+3b10b7b-0ubuntu1~edgers libcairo-gobject2 (1.10.2-6ubuntu3) to 1.11.3+git20111109.90b2fd34-0ubuntu0ricotz~oneiric0 libcairo-script-interpreter2 (1.10.2-6ubuntu3) to 1.11.3+git20111109.90b2fd34-0ubuntu0ricotz~oneiric0 libcairo2 (1.10.2-6ubuntu3) to 1.11.3+git20111109.90b2fd34-0ubuntu0ricotz~oneiric0 libcairo2-dev (1.10.2-6ubuntu3) to 1.11.3+git20111109.90b2fd34-0ubuntu0ricotz~oneiric0 libdrm-dev (2.4.26-1ubuntu1) to 2.4.27+git20111104.961bf9b5-0ubuntu0sarvatt~oneiric libdrm-intel1 (2.4.26-1ubuntu1) to 2.4.27+git20111104.961bf9b5-0ubuntu0sarvatt~oneiric libdrm-nouveau1a (2.4.26-1ubuntu1) to 2.4.27+git20111104.961bf9b5-0ubuntu0sarvatt~oneiric libdrm-radeon1 (2.4.26-1ubuntu1) to 2.4.27+git20111104.961bf9b5-0ubuntu0sarvatt~oneiric libdrm2 (2.4.26-1ubuntu1) to 2.4.27+git20111104.961bf9b5-0ubuntu0sarvatt~oneiric libegl1-mesa (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libegl1-mesa-dev (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libegl1-mesa-drivers (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libffi6 (3.0.11~rc1-2) to 3.0.11~rc1-5~oneiric1 libgbm1 (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libgl1-mesa-dev (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libgl1-mesa-dri (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libgl1-mesa-glx (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libglapi-mesa (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libglu1-mesa (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libglu1-mesa-dev (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libkms1 (2.4.26-1ubuntu1) to 2.4.27+git20111104.961bf9b5-0ubuntu0sarvatt~oneiric libopenvg1-mesa (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric libpciaccess0 (0.12.1-2) to 0.12.902-0ubuntu0ricotz~oneiric0 libpixman-1-0 (0.22.2-1) to 0.24.0-1~oneiric1 libpixman-1-dev (0.22.2-1) to 0.24.0-1~oneiric1 libwayland0 (0.1.0~0.2-0ubuntu3) to 0.1.0~git20111027.7e57dc14-0ubuntu0ricotz~oneiric linux-libc-dev (3.0.0-13.22) to 3.1.0-2.2 linux-tools-common (3.0.0-13.22) to 3.1.0-2.2 mesa-common-dev (7.11-0ubuntu3) to 7.12.0~git20111109.1d1c0fa2-0ubuntu0sarvatt~oneiric nvidia-current (285.05.09-0ubuntu1~oneiric~xup1) to 290.06-0ubuntu1~xedgers~oneiric1 nvidia-settings (285.05.09-0ubuntu1~oneiric~xup1) to 290.06-0ubuntu1~xedgers~oneiric1 x11-common (1:7.6+7ubuntu7) to 1:7.6+7ubuntu7edgers2 xorg (1:7.6+7ubuntu7) to 1:7.6+7ubuntu7edgers2 xserver-common (2:1.10.4-1ubuntu4.2) to 2:1.11.2+git20111109+server-1.11-branch.34bb83b9-0ubuntu0ricotz~oneiric xserver-xorg (1:7.6+7ubuntu7) to 1:7.6+7ubuntu7edgers2 xserver-xorg-core (2:1.10.4-1ubuntu4.2) to 2:1.11.2+git20111109+server-1.11-branch.34bb83b9-0ubuntu0ricotz~oneiric xserver-xorg-input-all (1:7.6+7ubuntu7) to 1:7.6+7ubuntu7edgers2 xserver-xorg-input-evdev (1:2.6.0-1ubuntu13) to 1:2.6.0+git20110912.070f30e0-0ubuntu0sarvatt xserver-xorg-input-mouse (1:1.7.1-1) to 1:1.7.1+git20111109.b6565197-0ubuntu0sarvatt~oneiric xserver-xorg-input-synaptics (1.4.1-1ubuntu2) to 1.5.99+git20111110.cefc85ad-0ubuntu0ricotz~oneiric xserver-xorg-input-vmmouse (1:12.7.0-2) to 1:12.7.0+git20111109.fd140bfb-0ubuntu0sarvatt~oneiric xserver-xorg-input-wacom (1:0.11.0-0ubuntu2) to 1:0.11.0-0ubuntu2ricotz1 xserver-xorg-video-all (1:7.6+7ubuntu7) to 1:7.6+7ubuntu7edgers2 xserver-xorg-video-apm (1:1.2.3-2) to 1:1.2.3+git20111109.6f8a776f-0ubuntu0sarvatt~oneiric xserver-xorg-video-ark (1:0.7.3-2) to 1:0.7.3+git20111109.9d3769be-0ubuntu0sarvatt~oneiric xserver-xorg-video-ati (1:6.14.99~git20110811.g93fc084-0ubuntu1) to 1:6.14.99+git20111106.5ec34ed9-0ubuntu0sarvatt xserver-xorg-video-chips (1:1.2.4-1) to 1:1.2.4+git20111109.8a5ea07f-0ubuntu0sarvatt~oneiric xserver-xorg-video-cirrus (1:1.3.2-2ubuntu7) to 1:1.3.2+git20110912.e4f80ffd-0ubuntu0sarvatt xserver-xorg-video-fbdev (1:0.4.2-3ubuntu6) to 1:0.4.2+git20111109.a8721393-0ubuntu0sarvatt~oneiric xserver-xorg-video-geode (2.11.12-2) to 2.11.12-2ubuntu0sarvatt xserver-xorg-video-i128 (1:1.3.4-2) to 1:1.3.4+git20111109.0e357623-0ubuntu0sarvatt~oneiric xserver-xorg-video-i740 (1:1.3.2-4) to 1:1.3.2+git20111109.87da594b-0ubuntu0sarvatt~oneiric xserver-xorg-video-intel (2:2.15.901-1ubuntu2.1) to 2:2.16.901+git20111109.436a7868-0ubuntu0sarvatt~oneiric xserver-xorg-video-mach64 (6.9.0-1) to 6.9.0+git20111109.0de23432-0ubuntu0sarvatt~oneiric xserver-xorg-video-mga (1:1.4.13.dfsg-3build1) to 1:1.4.13.dsfg+git20110928.07792ef4-0ubuntu0sarvatt xserver-xorg-video-neomagic (1:1.2.5-2) to 1:1.2.5+git20111109.f2a771c6-0ubuntu0sarvatt~oneiric xserver-xorg-video-nouveau (1:0.0.16+git20110411+8378443-1) to 1:0.0.16+git20111109.d575a28a-0ubuntu0sarvatt~oneiric xserver-xorg-video-openchrome (1:0.2.904+svn920-1) to 1:0.2.904+svn920-1ubuntu0sarvatt xserver-xorg-video-qxl (0.0.14-1) to 0.0.14-1ubuntu0 xserver-xorg-video-r128 (6.8.1-5) to 6.8.1+git20111109.67aaa469-0ubuntu0sarvatt~oneiric xserver-xorg-video-radeon (1:6.14.99~git20110811.g93fc084-0ubuntu1) to 1:6.14.99+git20111106.5ec34ed9-0ubuntu0sarvatt xserver-xorg-video-rendition (1:4.2.4-0ubuntu5) to 1:4.2.4+git20111109.810c279e-0ubuntu0sarvatt~oneiric xserver-xorg-video-s3 (1:0.6.3-4) to 1:0.6.3+git20111109.381ace93-0ubuntu0sarvatt~oneiric xserver-xorg-video-s3virge (1:1.10.4-4) to 1:1.10.4+git20111109.a568407e-0ubuntu0sarvatt~oneiric xserver-xorg-video-savage (1:2.3.3-1~oneiric~xup1) to 1:2.3.3+git20111109.8b9c81ba-0ubuntu0sarvatt~oneiric xserver-xorg-video-siliconmotion (1:1.7.5-1) to 1:1.7.5+git20111109.087226bf-0ubuntu0sarvatt~oneiric xserver-xorg-video-sis (1:0.10.3-3) to 1:0.10.3+git20110913.94f23a56+really0.10.3-0ubuntu0sarvatt xserver-xorg-video-sisusb (1:0.9.4-2) to 1:0.9.4+git20111109.02451944-0ubuntu0sarvatt~oneiric xserver-xorg-video-tdfx (1:1.4.3-4) to 1:1.4.3+git20111109.d7be4a95-0ubuntu0sarvatt~oneiric xserver-xorg-video-trident (1:1.3.4-2) to 1:1.3.4+git20111109.6afbfaf6-0ubuntu0sarvatt~oneiric xserver-xorg-video-tseng (1:1.2.4-2) to 1:1.2.4+git20111109.8f41e5d8-0ubuntu0sarvatt~oneiric xserver-xorg-video-vesa (1:2.3.0-7) to 1:2.3.0+git20111109.4ba7306f-0ubuntu0sarvatt~oneiric xserver-xorg-video-vmware (1:11.0.3-2) to 1:11.0.99.901+git20111109.4c08c260-0ubuntu0sarvatt~oneiric xserver-xorg-video-voodoo (1:1.2.4-2) to 1:1.2.4+git20111109.d2f109c4-0ubuntu0sarvatt~oneiric A quick browsing of gnome-system-monitor's dependencies makes me suspect libcairo2 (or its dependencies like libpixman) -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-system-monitor in Ubuntu. https://bugs.launchpad.net/bugs/881955 Title: System monitor freezes up when switching to Processes tab To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/881955/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
