I see in the logs that X crashed, rather than locked up? If this is correct, can you collect a full backtrace on this bug? Please see http://wiki.ubuntu.com/X/Backtracing for directions.
If not, what we need are logs from right after the failure (you may need to ssh in and collect them). ** Description changed: After upgrading from lucid to natty, running Xterm is fatal to the Xserver, no output in dmesg. The graphics card, 01:00.0 VGA compatible controller: nVidia Corporation G96 [GeForce 9500 GT] (rev a1), is not using the proprietary drivers. + + [236919.252] + Backtrace: + [236919.795] 0: /usr/bin/X (xorg_backtrace+0x26) [0x4a2656] + [236919.795] 1: /usr/bin/X (0x400000+0x621ca) [0x4621ca] + [236919.795] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb206502000+0xfc60) [0x7fb206511c60] + [236919.795] 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb20542d000+0x7a0e2) [0x7fb2054a70e2] + [236919.795] 4: /lib/x86_64-linux-gnu/libc.so.6 (__libc_malloc+0x6e) [0x7fb2054a931e] + [236919.795] 5: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x8b44) [0x7fb202a1bb44] + [236919.795] 6: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x11aa8) [0x7fb202a24aa8] + [236919.796] 7: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x9ca8) [0x7fb202a1cca8] + [236919.796] 8: /usr/bin/X (miPolyFillArc+0x129a) [0x55625a] + [236919.796] 9: /usr/bin/X (0x400000+0xdc863) [0x4dc863] + [236919.796] 10: /usr/bin/X (0x400000+0x2ac95) [0x42ac95] + [236919.796] 11: /usr/bin/X (0x400000+0x2e2a9) [0x42e2a9] + [236919.796] 12: /usr/bin/X (0x400000+0x21a7e) [0x421a7e] + [236919.796] 13: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) [0x7fb20544beff] + [236919.796] 14: /usr/bin/X (0x400000+0x21629) [0x421629] + [236919.796] Segmentation fault at address 0x3a8b838 + [236919.796] + Caught signal 11 (Segmentation fault). Server aborting + [236919.796] + Please consult the The X.Org Foundation support + at http://wiki.x.org + for help. + [236919.796] Please also check the log file at "/var/log/Xorg.0.log" for additional information. + [236919.796] + [236922.897] [mi] EQ overflowing. The server is probably stuck in an infinite loop. + [236922.897] + Backtrace: + [236922.923] 0: /usr/bin/X (xorg_backtrace+0x26) [0x4a2656] + [236922.923] 1: /usr/bin/X (mieqEnqueue+0x1f4) [0x4a1914] + [236922.923] 2: /usr/bin/X (xf86PostMotionEventM+0x97) [0x47d797] + [236922.923] 3: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fb201087000+0x5ff3) [0x7fb20108cff3] + [236922.923] 4: /usr/lib/xorg/modules/input/evdev_drv.so (0x7fb201087000+0x668d) [0x7fb20108d68d] + [236922.923] 5: /usr/bin/X (0x400000+0x6c687) [0x46c687] + [236922.923] 6: /usr/bin/X (0x400000+0x124c1e) [0x524c1e] + [236922.923] 7: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb206502000+0xfc60) [0x7fb206511c60] + [236922.923] 8: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb20542d000+0xf55ae) [0x7fb2055225ae] + [236922.923] 9: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb20542d000+0x7e80f) [0x7fb2054ab80f] + [236922.923] 10: /lib/x86_64-linux-gnu/libc.so.6 (cfree+0x68) [0x7fb2054a98d8] + [236922.923] 11: /usr/bin/X (0x400000+0x67012) [0x467012] + [236922.923] 12: /usr/bin/X (0x400000+0x674f4) [0x4674f4] + [236922.923] 13: /usr/bin/X (CloseWellKnownConnections+0x2f) [0x45f71f] + [236922.923] 14: /usr/bin/X (0x400000+0x6b098) [0x46b098] + [236922.923] 15: /usr/bin/X (0x400000+0x6bcd2) [0x46bcd2] + [236922.923] 16: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7fb206502000+0xfc60) [0x7fb206511c60] + [236922.923] 17: /lib/x86_64-linux-gnu/libc.so.6 (0x7fb20542d000+0x7a0e2) [0x7fb2054a70e2] + [236922.923] 18: /lib/x86_64-linux-gnu/libc.so.6 (__libc_malloc+0x6e) [0x7fb2054a931e] + [236922.923] 19: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x8b44) [0x7fb202a1bb44] + [236922.923] 20: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x11aa8) [0x7fb202a24aa8] + [236922.923] 21: /usr/lib/xorg/modules/libexa.so (0x7fb202a13000+0x9ca8) [0x7fb202a1cca8] + [236922.923] 22: /usr/bin/X (miPolyFillArc+0x129a) [0x55625a] + [236922.923] 23: /usr/bin/X (0x400000+0xdc863) [0x4dc863] + [236922.923] 24: /usr/bin/X (0x400000+0x2ac95) [0x42ac95] + [236922.923] 25: /usr/bin/X (0x400000+0x2e2a9) [0x42e2a9] + [236922.923] 26: /usr/bin/X (0x400000+0x21a7e) [0x421a7e] + [236922.923] 27: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) [0x7fb20544beff] + [236922.923] 28: /usr/bin/X (0x400000+0x21629) [0x421629] ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: xorg 1:7.6+4ubuntu3.1 ProcVersionSignature: Ubuntu 3.0.0-6.7-generic 3.0.0-rc7 Uname: Linux 3.0.0-6-generic x86_64 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Sun Jul 24 22:06:31 2011 DistUpgraded: Log time: 2011-07-07 19:29:32.286470 DistroCodename: natty DistroVariant: ubuntu GraphicsCard: - nVidia Corporation G96 [GeForce 9500 GT] [10de:0640] (rev a1) (prog-if 00 [VGA controller]) - Subsystem: eVga.com. Corp. Device [3842:c959] + nVidia Corporation G96 [GeForce 9500 GT] [10de:0640] (rev a1) (prog-if 00 [VGA controller]) + Subsystem: eVga.com. Corp. Device [3842:c959] MachineType: MICRO-STAR INTERNATIONAL CO.,LTD MS-7514 ProcEnviron: - LANGUAGE=en_US:en - PATH=(custom, user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + LANGUAGE=en_US:en + PATH=(custom, user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcKernelCmdLine: root=/dev/MIX/root ro Renderer: Software SourcePackage: xorg UpgradeStatus: Upgraded to natty on 2011-07-08 (16 days ago) dmi.bios.date: 07/02/2008 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: V1.3 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: MS-7514 dmi.board.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.board.version: 1.0 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: MICRO-STAR INTERNATIONAL CO.,LTD dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV1.3:bd07/02/2008:svnMICRO-STARINTERNATIONALCO.,LTD:pnMS-7514:pvr1.0:rvnMICRO-STARINTERNATIONALCO.,LTD:rnMS-7514:rvr1.0:cvnMICRO-STARINTERNATIONALCO.,LTD:ct3:cvr1.0: dmi.product.name: MS-7514 dmi.product.version: 1.0 dmi.sys.vendor: MICRO-STAR INTERNATIONAL CO.,LTD version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu1~natty2 version.ia32-libs: ia32-libs 20090808ubuntu13 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 N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.10.2-0ubuntu2 version.xserver-xorg: xserver-xorg 1:7.6+4ubuntu3.1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.0-0ubuntu4.1 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 ** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu) ** Changed in: xorg-server (Ubuntu) Importance: Undecided => High ** Changed in: xorg-server (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/815674 Title: X locks up when uxterm starts To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/815674/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp