I've experienced this problem from time to time (quite rarely) - while doing something on the computer, e.g. playing a youtube clip, editing an image in gimp, switching windows and stuff - X suddenly froze, keyboard not responding (not even caps lock, ctrl-alt-f1 or ctrl-alt-del), mouse cursor still moving but buttons not responding. The computer is still accessible through ssh, the X process is using 100% cpu, and the Xorg log is showing: [1267838.010] nvLock: client timed out, taking the lock [1281566.261] nvLock: client timed out, taking the lock [1284435.784] nvLock: client timed out, taking the lock [1288905.976] nvLock: client timed out, taking the lock [1313844.185] nvLock: client timed out, taking the lock [1349522.491] nvLock: client timed out, taking the lock [1354897.836] nvLock: client timed out, taking the lock [1356785.613] nvLock: client timed out, taking the lock [1377097.443] nvLock: client timed out, taking the lock [1378950.897] nvLock: client timed out, taking the lock [1388128.501] nvLock: client timed out, taking the lock [1392957.449] nvLock: client timed out, taking the lock [1412583.783] nvLock: client timed out, taking the lock [1501518.691] nvLock: client timed out, taking the lock [1501535.914] nvLock: client timed out, taking the lock [1546866.943] nvLock: client timed out, taking the lock [1555703.095] nvLock: client timed out, taking the lock [1556972.920] nvLock: client timed out, taking the lock [1557600.796] nvLock: client timed out, taking the lock [1558655.799] nvLock: client timed out, taking the lock [1560168.369] nvLock: client timed out, taking the lock [1586994.887] nvLock: client timed out, taking the lock [1592077.043] [mi] EQ overflowing. The server is probably stuck in an infinite loop. [1592077.142] Backtrace: [1592078.124] 0: /usr/bin/X (xorg_backtrace+0x28) [0x568a38] [1592078.124] 1: /usr/bin/X (mieqEnqueue+0x175) [0x549525] [1592078.124] 2: /usr/bin/X (0x400000+0x48bed) [0x448bed] [1592078.124] 3: /usr/bin/X (xf86PostMotionEventP+0x3c) [0x4832ac] [1592078.124] 4: /usr/lib64/xorg/modules/input/evdev_drv.so (0x7fe4503dc000+0x48fa) [0x7fe4503e08fa] [1592078.124] 5: /usr/bin/X (0x400000+0x6e587) [0x46e587] [1592078.124] 6: /usr/bin/X (0x400000+0x93c99) [0x493c99] [1592078.124] 7: /lib64/libpthread.so.0 (0x7fe456b51000+0x102e0) [0x7fe456b612e0] [1592078.125] 8: /usr/bin/X (0x400000+0x16cac0) [0x56cac0] [1592078.125] 9: /lib64/libpthread.so.0 (0x7fe456b51000+0x102e0) [0x7fe456b612e0] [1592078.125] 10: /lib64/libc.so.6 (0x7fe455a6b000+0x11f6ed) [0x7fe455b8a6ed] [1592078.125] 11: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0xf39f4) [0x7fe450f939f4] [1592078.125] 12: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x4d26d2) [0x7fe4513726d2] [1592078.125] 13: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x4d289e) [0x7fe45137289e] [1592078.125] 14: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x4ceb7a) [0x7fe45136eb7a] [1592078.125] 15: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x488837) [0x7fe451328837] [1592078.125] 16: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x49f7e1) [0x7fe45133f7e1] [1592078.125] 17: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x1522d6) [0x7fe450ff22d6] [1592078.125] 18: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x1585ae) [0x7fe450ff85ae] [1592078.125] 19: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x15a6ef) [0x7fe450ffa6ef] [1592078.125] 20: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x15e4c8) [0x7fe450ffe4c8] [1592078.125] 21: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x127f22) [0x7fe450fc7f22] [1592078.125] 22: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x48f4e7) [0x7fe45132f4e7] [1592078.125] 23: /usr/lib64/xorg/modules/extensions/libglx.so (0x7fe454163000+0x46271b) [0x7fe4545c571b] [1619178.385] nvLock: client timed out, taking the lock [1756818.920] nvLock: client timed out, taking the lock [1768462.836] nvLock: client timed out, taking the lock [1804472.742] nvLock: client timed out, taking the lock [1805646.594] nvLock: client timed out, taking the lock [1812518.270] nvLock: client timed out, taking the lock [1818231.578] nvLock: client timed out, taking the lock [1823678.273] nvLock: client timed out, taking the lock [1872161.548] nvLock: client timed out, taking the lock [1876611.304] [mi] EQ overflowing. The server is probably stuck in an infinite loop. [1876611.372] Backtrace: [1876611.633] 0: /usr/bin/X (xorg_backtrace+0x28) [0x568a38] [1876611.633] 1: /usr/bin/X (mieqEnqueue+0x175) [0x549525] [1876611.633] 2: /usr/bin/X (0x400000+0x48bed) [0x448bed] [1876611.633] 3: /usr/bin/X (xf86PostMotionEventP+0x3c) [0x4832ac] [1876611.652] 4: /usr/lib64/xorg/modules/input/evdev_drv.so (0x7fe4503dc000+0x48fa) [0x7fe4503e08fa] [1876611.652] 5: /usr/bin/X (0x400000+0x6e587) [0x46e587] [1876611.652] 6: /usr/bin/X (0x400000+0x93c99) [0x493c99] [1876611.652] 7: /lib64/libpthread.so.0 (0x7fe456b51000+0x102e0) [0x7fe456b612e0] [1876611.659] 8: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x896bd) [0x7fe450f296bd] [1876611.659] 9: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x8b2b5) [0x7fe450f2b2b5] [1876611.659] 10: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0xf6e0b) [0x7fe450f96e0b] [1876611.659] 11: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x4d5350) [0x7fe451375350] [1876611.659] 12: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x4d3dd5) [0x7fe451373dd5] [1876611.659] 13: /usr/lib64/xorg/modules/drivers/nvidia_drv.so (0x7fe450ea0000+0x4d558d) [0x7fe45137558d] [1876611.659] 14: /usr/bin/X (0x400000+0xfab3b) [0x4fab3b] [1876611.660] 15: /usr/bin/X (0x400000+0xcb888) [0x4cb888] [1876611.660] 16: /usr/bin/X (0x400000+0xcc895) [0x4cc895] [1876611.660] 17: /usr/bin/X (0x400000+0x35821) [0x435821] [1876611.660] 18: /usr/bin/X (0x400000+0x249ea) [0x4249ea] [1876611.660] 19: /lib64/libc.so.6 (__libc_start_main+0xfd) [0x7fe455a8d09d] [1876611.660] 20: /usr/bin/X (0x400000+0x24589) [0x424589] I was able to stop and restart the xdm service (through ssh) and use the computer again without rebooting. Reproducible: Sometimes # emerge --info Portage 2.1.10.41 (default/linux/amd64/10.0, gcc-4.5.3, glibc-2.13-r4, 3.1.6-gentoo x86_64) ================================================================= System uname: Linux-3.1.6-gentoo-x86_64-Intel-R-_Core-TM-2_Duo_CPU_E8500_@_3.16GHz-with-gentoo-2.0.3 Timestamp of tree: Wed, 25 Jan 2012 14:30:01 +0000 distcc 3.1 x86_64-pc-linux-gnu [disabled] app-shells/bash: 4.1_p9 dev-java/java-config: 2.1.11-r3 dev-lang/python: 2.7.2-r3, 3.1.4-r3 dev-util/cmake: 2.8.6-r4 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.0.3 sys-apps/openrc: 0.9.8.1 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.13, 2.68 sys-devel/automake: 1.9.6-r3, 1.10.3, 1.11.1 sys-devel/binutils: 2.21.1-r1 sys-devel/gcc: 4.4.5, 4.5.3-r1 sys-devel/gcc-config: 1.4.1-r1 sys-devel/libtool: 2.4-r1 sys-devel/make: 3.82-r1 sys-kernel/linux-headers: 3.1 (virtual/os-headers) sys-libs/glibc: 2.13-r4 Repositories: gentoo aditsu ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA googleearth skype-eula" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=core2" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/openvpn/easy-rsa /var/bind /var/lib/hsqldb" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.3/ext-active/ /etc/php/cgi-php5.3/ext-active/ /etc/php/cli-php5.3/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-O2 -pipe -march=core2" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs distlocks ebuild-locks fixlafiles news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="" GENTOO_MIRRORS="http://gentoo.aditsu.net/" LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="en en_US en_GB" MAKEOPTS="-j3" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/mnt/md3/portage-tmp/" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/home/aditsu/ebuilds" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X a52 aac acl acpi alsa amd64 amr apng berkdb bittorrent bzip2 cairo cdda cddb cjk cli cracklib crypt cuda cups cxx dbus declarative dri dv dvd dvdr encode exif faac ffmpeg fontconfig fortran gdbm gimp gnutls gphoto2 gpm gs gstreamer gtk iconv icu imagemagick ipv6 jack java jbig jpeg jpeg2k kde kipi lame mad mdadm midi mikmod mjpeg mmx mng modules mp3 mpeg mplayer mudflap multilib ncurses nls nptl nptlonly ocr ogg opengl openmp pam pcre png policykit postproc pppd qt3support qt4 quicktime rdesktop readline rtsp samba scanner sdl semantic-desktop session sndfile snmp speex sql sqlite sse sse2 ssl ssse3 subtitles subversion svg symlink sysfs tcpd theora threads tiff truetype unicode usb v4l v4l2 vcd vhosts vnc vorbis webkit x264 xine xml xorg xv xvid zlib zsh-completion" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan stage tables krita karbon braindump" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="evdev keyboard mouse wacom" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en en_US en_GB" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="nvidia" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
1) Please post your output of `emerge -vpq x11-drivers/nvidia-drivers' in a comment. 2) Superficially this looks like a duplicate of bug #395547.
1) # emerge -vpq x11-drivers/nvidia-drivers [ebuild R ] x11-drivers/nvidia-drivers-290.10 USE="acpi gtk (multilib) -custom-cflags" 2) The xorg log doesn't look similar, but the symptoms do. And the problem has been happening for quite a long time (with different driver versions), but rarely, this is maybe the 5th time in a year or so for me. Also, there are lots of people reporting similar problems on the internet (with no definitive solution).
What nvidia card do you have? How old is it? Could it be a hardware problem?
It's an Asus EN210 # lspci -v -s 01:00.0 01:00.0 VGA compatible controller: nVidia Corporation GT200 [GeForce 210] (rev a2) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 8353 Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at fd000000 (32-bit, non-prefetchable) [size=16M] Memory at d0000000 (64-bit, prefetchable) [size=256M] Memory at ce000000 (64-bit, prefetchable) [size=32M] I/O ports at cc00 [size=128] [virtual] Expansion ROM at fe800000 [disabled] [size=512K] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [b4] Vendor Specific Information: Len=14 <?> Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting <?> Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Kernel driver in use: nvidia Kernel modules: nvidia I bought it on 5 April 2011, after my old card died. I don't think it's a hardware problem, but I can't say it's impossible.
It just happened again.
99% of the time this is bad RAM, bad power, both or a bad card. In fact, 100% of the time.
