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Since yesterday, after selecting to update some packages recommended by the update manager, I am not able to use my ubuntu 11.10.

Everything seems to be working fine, until I move the mouse.

As soon as the mouse is moved, xserver crashes with segmentation fault (Caught signal 11).

Here is the Xorg.0.log file -- any help on this will be really appreciated.

[    25.145] (II) VESA: driver for VESA chipsets: vesa
[    25.145] (II) FBDEV: driver for framebuffer: fbdev
[    25.145] (++) using VT number 7

[    25.145] (II) Loading /usr/lib/xorg/modules/drivers/radeon_drv.so
[    25.145] (II) [KMS] Kernel modesetting enabled.
[    25.145] (WW) Falling back to old probe method for vesa
[    25.145] (WW) Falling back to old probe method for fbdev
[    25.146] (II) Loading sub module "fbdevhw"
[    25.146] (II) LoadModule: "fbdevhw"
[    25.146] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
[    25.146] (II) Module fbdevhw: vendor="X.Org Foundation"
[    25.146]    compiled for 1.10.4, module version = 0.0.2
[    25.146]    ABI class: X.Org Video Driver, version 10.0
[    25.146] (II) RADEON(0): Creating default Display subsection in Screen section
    "Default Screen Section" for depth/fbbpp 24/32
[    25.146] (==) RADEON(0): Depth 24, (--) framebuffer bpp 32
[    25.146] (II) RADEON(0): Pixel depth = 24 bits stored in 4 bytes (32 bpp pixmaps)
[    25.146] (==) RADEON(0): Default visual is TrueColor
[    25.146] (==) RADEON(0): RGB weight 888
[    25.146] (II) RADEON(0): Using 8 bits per RGB (8 bit DAC)
[    25.146] (--) RADEON(0): Chipset: "ATI Radeon X1200" (ChipID = 0x791e)
[    25.146] (II) RADEON(0): PCI card detected
[    25.146] drmOpenDevice: node name is /dev/dri/card0
[    25.146] drmOpenDevice: open result is 12, (OK)
[    25.146] drmOpenByBusid: Searching for BusID pci:0000:01:05.0
[    25.146] drmOpenDevice: node name is /dev/dri/card0
[    25.146] drmOpenDevice: open result is 12, (OK)
[    25.146] drmOpenByBusid: drmOpenMinor returns 12
[    25.146] drmOpenByBusid: drmGetBusid reports pci:0000:01:05.0
[    25.146] (II) Loading sub module "exa"
[    25.146] (II) LoadModule: "exa"
[    25.146] (II) Loading /usr/lib/xorg/modules/libexa.so
[    25.146] (II) Module exa: vendor="X.Org Foundation"
[    25.146]    compiled for 1.10.4, module version = 2.5.0
[    25.146]    ABI class: X.Org Video Driver, version 10.0
[    25.146] (II) RADEON(0): KMS Color Tiling: enabled
[    25.146] (II) RADEON(0): KMS Pageflipping: enabled
[    25.146] (II) RADEON(0): SwapBuffers wait for vsync: enabled
[    25.199] (II) RADEON(0): Output VGA-0 has no monitor section
[    25.372] (II) RADEON(0): Output S-video has no monitor section
[    25.404] (II) RADEON(0): Output DVI-0 has no monitor section
[    25.437] (II) RADEON(0): Output DVI-1 has no monitor section
[    25.490] (II) RADEON(0): EDID for output VGA-0
[    25.490] (II) RADEON(0): Manufacturer: GSM  Model: 57a0  Serial#: 252027
[    25.490] (II) RADEON(0): Year: 2011  Week: 10
[    25.490] (II) RADEON(0): EDID Version: 1.3
[    25.490] (II) RADEON(0): Analog Display Input,  Input Voltage Level: 0.700/0.700 V
[    25.490] (II) RADEON(0): Sync:  Separate  Composite
[    25.490] (II) RADEON(0): Max Image Size [cm]: horiz.: 48  vert.: 27
[    25.490] (II) RADEON(0): Gamma: 2.20
[    25.490] (II) RADEON(0): DPMS capabilities: StandBy Suspend Off; RGB/Color Display
[    25.490] (II) RADEON(0): First detailed timing is preferred mode
[    25.490] (II) RADEON(0): redX: 0.645 redY: 0.335   greenX: 0.301 greenY: 0.616
[    25.490] (II) RADEON(0): blueX: 0.145 blueY: 0.069   whiteX: 0.313 whiteY: 0.329
[    25.490] (II) RADEON(0): Supported established timings:
[    25.490] (II) RADEON(0): 720x400@70Hz
[    25.490] (II) RADEON(0): 640x480@60Hz
[    25.490] (II) RADEON(0): 640x480@75Hz
[    25.490] (II) RADEON(0): 800x600@60Hz
[    25.490] (II) RADEON(0): 800x600@75Hz
[    25.490] (II) RADEON(0): 1024x768@60Hz
[    25.490] (II) RADEON(0): 1024x768@75Hz
[    25.490] (II) RADEON(0): 1280x1024@75Hz
[    25.490] (II) RADEON(0): Manufacturer's mask: 0
[    25.490] (II) RADEON(0): Supported standard timings:
[    25.490] (II) RADEON(0): #0: hsize: 1680  vsize 1050  refresh: 60  vid: 179
[    25.490] (II) RADEON(0): #1: hsize: 1280  vsize 1024  refresh: 60  vid: 32897
[    25.490] (II) RADEON(0): #2: hsize: 1280  vsize 1024  refresh: 75  vid: 36737
[    25.490] (II) RADEON(0): #3: hsize: 1152  vsize 864  refresh: 75  vid: 20337
[    25.490] (II) RADEON(0): Supported detailed timing:
[    25.490] (II) RADEON(0): clock: 148.5 MHz   Image Size:  477 x 268 mm
[    25.490] (II) RADEON(0): h_active: 1920  h_sync: 2008  h_sync_end 2052 h_blank_end 2200 h_border: 0
[    25.490] (II) RADEON(0): v_active: 1080  v_sync: 1084  v_sync_end 1089 v_blanking: 1125 v_border: 0
[    25.490] (II) RADEON(0): Ranges: V min: 56 V max: 75 Hz, H min: 30 H max: 83 kHz, PixClock max 155 MHz
[    25.490] (II) RADEON(0): Monitor name: W2240
[    25.490] (II) RADEON(0): Serial No: 110NDCR7E027
[    25.490] (II) RADEON(0): EDID (in hex):
[    25.490] (II) RADEON(0):    00ffffffffffff001e6da0577bd80300
[    25.490] (II) RADEON(0):    0a1501036c301b78ea3335a5554d9d25
[    25.490] (II) RADEON(0):    115054a54b00b3008180818f714f0101
[    25.490] (II) RADEON(0):    010101010101023a801871382d40582c
[    25.490] (II) RADEON(0):    4500dd0c1100001a000000fd00384b1e
[    25.490] (II) RADEON(0):    530f000a202020202020000000fc0057
[    25.490] (II) RADEON(0):    323234300a20202020202020000000ff
[    25.490] (II) RADEON(0):    003131304e44435237453032370a00e3
[    25.490] (II) RADEON(0): EDID vendor "GSM", prod id 22432
[    25.490] (II) RADEON(0): Using EDID range info for horizontal sync
[    25.490] (II) RADEON(0): Using EDID range info for vertical refresh
[    25.490] (II) RADEON(0): Printing DDC gathered Modelines:
[    25.490] (II) RADEON(0): Modeline "1920x1080"x0.0  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync -vsync (67.5 kHz)
[    25.490] (II) RADEON(0): Modeline "800x600"x0.0   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz)
[    25.490] (II) RADEON(0): Modeline "640x480"x0.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz)
[    25.490] (II) RADEON(0): Modeline "640x480"x0.0   25.18  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz)
[    25.490] (II) RADEON(0): Modeline "720x400"x0.0   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz)
[    25.490] (II) RADEON(0): Modeline "1280x1024"x0.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz)
[    25.490] (II) RADEON(0): Modeline "1024x768"x0.0   78.75  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.0 kHz)
[    25.490] (II) RADEON(0): Modeline "1024x768"x0.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz)
[    25.490] (II) RADEON(0): Modeline "800x600"x0.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz)
[    25.490] (II) RADEON(0): Modeline "1680x1050"x0.0  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync (65.3 kHz)
[    25.490] (II) RADEON(0): Modeline "1280x1024"x0.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz)
[    25.490] (II) RADEON(0): Modeline "1152x864"x0.0  108.00  1152 1216 1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz)
[    25.490] (II) RADEON(0): Printing probed modes for output VGA-0
[    25.490] (II) RADEON(0): Modeline "1920x1080"x60.0  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync -vsync (67.5 kHz)
[    25.490] (II) RADEON(0): Modeline "1680x1050"x60.0  146.25  1680 1784 1960 2240  1050 1053 1059 1089 -hsync +vsync (65.3 kHz)
[    25.490] (II) RADEON(0): Modeline "1280x1024"x75.0  135.00  1280 1296 1440 1688  1024 1025 1028 1066 +hsync +vsync (80.0 kHz)
[    25.490] (II) RADEON(0): Modeline "1280x1024"x60.0  108.00  1280 1328 1440 1688  1024 1025 1028 1066 +hsync +vsync (64.0 kHz)
[    25.490] (II) RADEON(0): Modeline "1152x864"x75.0  108.00  1152 1216 1344 1600  864 865 868 900 +hsync +vsync (67.5 kHz)
[    25.490] (II) RADEON(0): Modeline "1024x768"x75.1   78.80  1024 1040 1136 1312  768 769 772 800 +hsync +vsync (60.1 kHz)
[    25.490] (II) RADEON(0): Modeline "1024x768"x60.0   65.00  1024 1048 1184 1344  768 771 777 806 -hsync -vsync (48.4 kHz)
[    25.490] (II) RADEON(0): Modeline "800x600"x75.0   49.50  800 816 896 1056  600 601 604 625 +hsync +vsync (46.9 kHz)
[    25.490] (II) RADEON(0): Modeline "800x600"x60.3   40.00  800 840 968 1056  600 601 605 628 +hsync +vsync (37.9 kHz)
[    25.490] (II) RADEON(0): Modeline "640x480"x75.0   31.50  640 656 720 840  480 481 484 500 -hsync -vsync (37.5 kHz)
[    25.490] (II) RADEON(0): Modeline "640x480"x60.0   25.20  640 656 752 800  480 490 492 525 -hsync -vsync (31.5 kHz)
[    25.490] (II) RADEON(0): Modeline "720x400"x70.1   28.32  720 738 846 900  400 412 414 449 -hsync +vsync (31.5 kHz)
[    25.664] (II) RADEON(0): EDID for output S-video
[    25.696] (II) RADEON(0): EDID for output DVI-0
[    25.728] (II) RADEON(0): EDID for output DVI-1
[    25.728] (II) RADEON(0): Output VGA-0 connected
[    25.728] (II) RADEON(0): Output S-video disconnected
[    25.728] (II) RADEON(0): Output DVI-0 disconnected
[    25.728] (II) RADEON(0): Output DVI-1 disconnected
[    25.728] (II) RADEON(0): Using exact sizes for initial modes
[    25.729] (II) RADEON(0): Output VGA-0 using initial mode 1920x1080
[    25.729] (II) RADEON(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
[    25.729] (II) RADEON(0): mem size init: gart size :1fdff000 vram size: s:10000000 visible:f7d7000
[    25.729] (II) RADEON(0): EXA: Driver will allow EXA pixmaps in VRAM
[    25.729] (**) RADEON(0): Display dimensions: (480, 270) mm
[    25.729] (**) RADEON(0): DPI set to (101, 101)
[    25.729] (II) Loading sub module "fb"
[    25.729] (II) LoadModule: "fb"
[    25.729] (II) Loading /usr/lib/xorg/modules/libfb.so
[    25.729] (II) Module fb: vendor="X.Org Foundation"
[    25.729]    compiled for 1.10.4, module version = 1.0.0
[    25.729]    ABI class: X.Org ANSI C Emulation, version 0.4
[    25.729] (II) Loading sub module "ramdac"
[    25.729] (II) LoadModule: "ramdac"
[    25.729] (II) Module "ramdac" already built-in
[    25.729] (II) UnloadModule: "vesa"
[    25.729] (II) Unloading vesa
[    25.729] (II) UnloadModule: "fbdev"
[    25.729] (II) Unloading fbdev
[    25.729] (II) UnloadModule: "fbdevhw"
[    25.729] (II) Unloading fbdevhw
[    25.729] (--) Depth 24 pixmap format is 32 bpp
[    25.729] (II) RADEON(0): [DRI2] Setup complete
[    25.729] (II) RADEON(0): [DRI2]   DRI driver: r300
[    25.729] (II) RADEON(0): Front buffer size: 8160K
[    25.729] (II) RADEON(0): VRAM usage limit set to 221065K
[    25.729] (==) RADEON(0): Backing store disabled
[    25.729] (II) RADEON(0): Direct rendering enabled
[    25.729] (II) RADEON(0): Render acceleration enabled for R300/R400/R500 type cards.
[    25.729] (II) RADEON(0): Setting EXA maxPitchBytes
[    25.729] (II) EXA(0): Driver allocated offscreen pixmaps
[    25.729] (II) EXA(0): Driver registered support for the following operations:
[    25.729] (II)         Solid
[    25.729] (II)         Copy
[    25.729] (II)         Composite (RENDER acceleration)
[    25.729] (II)         UploadToScreen
[    25.729] (II)         DownloadFromScreen
[    25.729] (II) RADEON(0): Acceleration enabled
[    25.729] (==) RADEON(0): DPMS enabled
[    25.729] (==) RADEON(0): Silken mouse enabled
[    25.729] (II) RADEON(0): Set up textured video
[    25.729] (II) RADEON(0): [XvMC] Associated with Radeon Textured Video.
[    25.729] (II) RADEON(0): [XvMC] Extension initialized.
[    25.729] (II) RADEON(0): RandR 1.2 enabled, ignore the following RandR disabled message.
[    25.736] (--) RandR disabled
[    25.736] (II) Initializing built-in extension Generic Event Extension
[    25.736] (II) Initializing built-in extension SHAPE
[    25.736] (II) Initializing built-in extension MIT-SHM
[    25.736] (II) Initializing built-in extension XInputExtension
[    25.736] (II) Initializing built-in extension XTEST
[    25.736] (II) Initializing built-in extension BIG-REQUESTS
[    25.736] (II) Initializing built-in extension SYNC
[    25.736] (II) Initializing built-in extension XKEYBOARD
[    25.736] (II) Initializing built-in extension XC-MISC
[    25.736] (II) Initializing built-in extension SECURITY
[    25.736] (II) Initializing built-in extension XINERAMA
[    25.736] (II) Initializing built-in extension XFIXES
[    25.736] (II) Initializing built-in extension RENDER
[    25.736] (II) Initializing built-in extension RANDR
[    25.736] (II) Initializing built-in extension COMPOSITE
[    25.736] (II) Initializing built-in extension DAMAGE
[    25.736] (II) Initializing built-in extension GESTURE
[    25.741] (II) AIGLX: Trying DRI driver /usr/lib/x86_64-linux-gnu/dri/r300_dri.so
[    25.750] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
[    25.750] (II) AIGLX: enabled GLX_INTEL_swap_event
[    25.750] (II) AIGLX: enabled GLX_SGI_swap_control and GLX_MESA_swap_control
[    25.750] (II) AIGLX: enabled GLX_SGI_make_current_read
[    25.750] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
[    25.751] (II) AIGLX: Loaded and initialized r300
[    25.751] (II) GLX: Initialized DRI2 GL provider for screen 0
[    25.751] (II) RADEON(0): Setting screen physical size to 508 x 285
[    25.766] (II) XKB: reuse xkmfile /var/lib/xkb/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm
[    25.773] (II) config/udev: Adding input device Power Button (/dev/input/event1)
[    25.773] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[    25.773] (II) LoadModule: "evdev"
[    25.773] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    25.773] (II) Module evdev: vendor="X.Org Foundation"
[    25.773]    compiled for 1.10.2, module version = 2.6.0
[    25.773]    Module class: X.Org XInput Driver
[    25.773]    ABI class: X.Org XInput driver, version 12.3
[    25.774] (II) Using input driver 'evdev' for 'Power Button'
[    25.774] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    25.774] (**) Power Button: always reports core events
[    25.774] (**) Power Button: Device: "/dev/input/event1"
[    25.774] (--) Power Button: Found keys
[    25.774] (II) Power Button: Configuring as keyboard
[    25.774] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input1/event1"
[    25.774] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD)
[    25.774] (**) Option "xkb_rules" "evdev"
[    25.774] (**) Option "xkb_model" "pc105"
[    25.774] (**) Option "xkb_layout" "us,gr"
[    25.774] (**) Option "xkb_variant" ","
[    25.774] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
[    25.775] (II) XKB: reuse xkmfile /var/lib/xkb/server-9078D1F245FADE3CB4AD835262E1036C04792E56.xkm
[    25.777] (II) config/udev: Adding input device Power Button (/dev/input/event0)
[    25.777] (**) Power Button: Applying InputClass "evdev keyboard catchall"
[    25.777] (II) Using input driver 'evdev' for 'Power Button'
[    25.777] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    25.777] (**) Power Button: always reports core events
[    25.777] (**) Power Button: Device: "/dev/input/event0"
[    25.777] (--) Power Button: Found keys
[    25.777] (II) Power Button: Configuring as keyboard
[    25.777] (**) Option "config_info" "udev:/sys/devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input0/event0"
[    25.777] (II) XINPUT: Adding extended input device "Power Button" (type: KEYBOARD)
[    25.777] (**) Option "xkb_rules" "evdev"
[    25.777] (**) Option "xkb_model" "pc105"
[    25.777] (**) Option "xkb_layout" "us,gr"
[    25.777] (**) Option "xkb_variant" ","
[    25.777] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
[    25.780] (II) config/udev: Adding input device Microsoft Microsoft Wireless Optical Mouse® 1.00 (/dev/input/event2)
[    25.780] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: Applying InputClass "evdev pointer catchall"
[    25.780] (II) Using input driver 'evdev' for 'Microsoft Microsoft Wireless Optical Mouse® 1.00'
[    25.780] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    25.780] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: always reports core events
[    25.780] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: Device: "/dev/input/event2"
[    25.780] (--) Microsoft Microsoft Wireless Optical Mouse® 1.00: Found 9 mouse buttons
[    25.780] (--) Microsoft Microsoft Wireless Optical Mouse® 1.00: Found scroll wheel(s)
[    25.780] (--) Microsoft Microsoft Wireless Optical Mouse® 1.00: Found relative axes
[    25.780] (--) Microsoft Microsoft Wireless Optical Mouse® 1.00: Found x and y relative axes
[    25.780] (II) Microsoft Microsoft Wireless Optical Mouse® 1.00: Configuring as mouse
[    25.780] (II) Microsoft Microsoft Wireless Optical Mouse® 1.00: Adding scrollwheel support
[    25.780] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: YAxisMapping: buttons 4 and 5
[    25.780] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[    25.780] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:13.3/usb5/5-1/5-1:1.0/input/input2/event2"
[    25.780] (II) XINPUT: Adding extended input device "Microsoft Microsoft Wireless Optical Mouse® 1.00" (type: MOUSE)
[    25.780] (II) Microsoft Microsoft Wireless Optical Mouse® 1.00: initialized for relative axes.
[    25.780] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: (accel) keeping acceleration scheme 1
[    25.780] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: (accel) acceleration profile 0
[    25.781] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: (accel) acceleration factor: 2.000
[    25.781] (**) Microsoft Microsoft Wireless Optical Mouse® 1.00: (accel) acceleration threshold: 4
[    25.781] (II) config/udev: Adding input device Microsoft Microsoft Wireless Optical Mouse® 1.00 (/dev/input/mouse0)
[    25.781] (II) No input driver/identifier specified (ignoring)
[    25.782] (II) config/udev: Adding input device Logitech Logitech USB Keyboard (/dev/input/event3)
[    25.782] (**) Logitech Logitech USB Keyboard: Applying InputClass "evdev keyboard catchall"
[    25.782] (II) Using input driver 'evdev' for 'Logitech Logitech USB Keyboard'
[    25.782] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    25.782] (**) Logitech Logitech USB Keyboard: always reports core events
[    25.782] (**) Logitech Logitech USB Keyboard: Device: "/dev/input/event3"
[    25.782] (--) Logitech Logitech USB Keyboard: Found keys
[    25.782] (II) Logitech Logitech USB Keyboard: Configuring as keyboard
[    25.782] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:13.5/usb1/1-8/1-8.1/1-8.1:1.0/input/input3/event3"
[    25.782] (II) XINPUT: Adding extended input device "Logitech Logitech USB Keyboard" (type: KEYBOARD)
[    25.782] (**) Option "xkb_rules" "evdev"
[    25.782] (**) Option "xkb_model" "pc105"
[    25.782] (**) Option "xkb_layout" "us,gr"
[    25.782] (**) Option "xkb_variant" ","
[    25.782] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
[    25.783] (II) config/udev: Adding input device Logitech Logitech USB Keyboard (/dev/input/event4)
[    25.783] (**) Logitech Logitech USB Keyboard: Applying InputClass "evdev keyboard catchall"
[    25.783] (II) Using input driver 'evdev' for 'Logitech Logitech USB Keyboard'
[    25.783] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
[    25.783] (**) Logitech Logitech USB Keyboard: always reports core events
[    25.783] (**) Logitech Logitech USB Keyboard: Device: "/dev/input/event4"
[    25.783] (--) Logitech Logitech USB Keyboard: Found 1 mouse buttons
[    25.783] (--) Logitech Logitech USB Keyboard: Found keys
[    25.783] (II) Logitech Logitech USB Keyboard: Configuring as mouse
[    25.783] (II) Logitech Logitech USB Keyboard: Configuring as keyboard
[    25.783] (**) Logitech Logitech USB Keyboard: YAxisMapping: buttons 4 and 5
[    25.783] (**) Logitech Logitech USB Keyboard: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
[    25.783] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:13.5/usb1/1-8/1-8.1/1-8.1:1.1/input/input4/event4"
[    25.783] (II) XINPUT: Adding extended input device "Logitech Logitech USB Keyboard" (type: KEYBOARD)
[    25.783] (**) Option "xkb_rules" "evdev"
[    25.783] (**) Option "xkb_model" "pc105"
[    25.783] (**) Option "xkb_layout" "us,gr"
[    25.783] (**) Option "xkb_variant" ","
[    25.783] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
[    25.784] 
Backtrace:
[    25.784] 0: /usr/bin/X (xorg_backtrace+0x26) [0x460566]
[    25.784] 1: /usr/bin/X (0x400000+0x64b7a) [0x464b7a]
[    25.784] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f5cf5be3000+0x10060) [0x7f5cf5bf3060]
[    25.784] 3: /usr/bin/X (_miPointerSetPosition+0x121) [0x45d671]
[    25.784] 4: /usr/bin/X (GetPointerEvents+0x3ea) [0x44488a]
[    25.784] 5: /usr/bin/X (xf86PostMotionEventM+0x73) [0x4805b3]
[    25.784] 6: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f5cef1a3000+0x5f23) [0x7f5cef1a8f23]
[    25.784] 7: /usr/lib/xorg/modules/input/evdev_drv.so (0x7f5cef1a3000+0x65fb) [0x7f5cef1a95fb]
[    25.784] 8: /usr/bin/X (0x400000+0x6da77) [0x46da77]
[    25.784] 9: /usr/bin/X (0x400000+0x1229ee) [0x5229ee]
[    25.784] 10: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f5cf5be3000+0x10060) [0x7f5cf5bf3060]
[    25.784] 11: /lib/x86_64-linux-gnu/libc.so.6 (__open64+0x10) [0x7f5cf4bd1840]
[    25.784] 12: /lib/x86_64-linux-gnu/libc.so.6 (_IO_file_fopen+0xd9) [0x7f5cf4b72389]
[    25.784] 13: /lib/x86_64-linux-gnu/libc.so.6 (0x7f5cf4afe000+0x69166) [0x7f5cf4b67166]
[    25.784] 14: /lib/x86_64-linux-gnu/libudev.so.0 (0x7f5cf648b000+0x5c0b) [0x7f5cf6490c0b]
[    25.784] 15: /lib/x86_64-linux-gnu/libudev.so.0 (udev_device_get_devnode+0x31) [0x7f5cf649171c]
[    25.784] 16: /usr/bin/X (0x400000+0x1238e9) [0x5238e9]
[    25.784] 17: /usr/bin/X (0x400000+0x12432e) [0x52432e]
[    25.784] 18: /usr/bin/X (config_init+0x9) [0x5235d9]
[    25.784] 19: /usr/bin/X (InitInput+0xf5) [0x472655]
[    25.784] 20: /usr/bin/X (0x400000+0x232c6) [0x4232c6]
[    25.784] 21: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f5cf4b1f30d]
[    25.784] 22: /usr/bin/X (0x400000+0x235ed) [0x4235ed]
[    25.784] Segmentation fault at address 0x7fff00000780
[    25.784] 
Caught signal 11 (Segmentation fault). Server aborting
[    25.784] 
Please consult the The X.Org Foundation support 
     at http://wiki.x.org
 for help. 
[    25.784] Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[    25.784] 
[    25.784] (II) Power Button: Close
[    25.784] (II) UnloadModule: "evdev"
[    25.784] (II) Unloading evdev
[    25.784] (II) Power Button: Close
[    25.784] (II) UnloadModule: "evdev"
[    25.784] (II) Unloading evdev
[    25.785] (II) Microsoft Microsoft Wireless Optical Mouse® 1.00: Close
[    25.785] (II) UnloadModule: "evdev"
[    25.785] (II) Unloading evdev
[    25.785] (II) Logitech Logitech USB Keyboard: Close
[    25.785] (II) UnloadModule: "evdev"
[    25.785] (II) Unloading evdev
[    25.785] (II) Logitech Logitech USB Keyboard: Close
[    25.785] (II) UnloadModule: "evdev"
[    25.785] (II) Unloading evdev
[    25.785] (II) AIGLX: Suspending AIGLX clients for VT switch
[    25.802]  ddxSigGiveUp: Closing log
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closed as off topic by fossfreedom, Marco Ceppi Feb 5 '12 at 20:30

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions here –  fossfreedom Feb 5 '12 at 19:43

4 Answers 4

up vote 2 down vote accepted
sudo aptitude install libxfixes3=1:5.0-4
sudo aptitude install xserver-xephyr=2:1.10.4-1ubuntu4.2
sudo aptitude install unity=4.28.0-0ubuntu2
sudo aptitude install xserver-xorg-core=2:1.10.4-1ubuntu4.1

and downgrading some packages from previous answers did the trick for me.

share|improve this answer

I can confirm that the offending package on my system is xserver-xorg-core version 2:1.10.4-1ubuntu4.2newyork1.

Downgrading it with

sudo apt-get install xserver-xorg-core=2:1.10.4-1ubuntu4

saved the day for me.

share|improve this answer

I had the same problem. Downgrading xorg, xserver-xorg, xserver-xorg-core, xserver-xorg-input-all, xserver-xorg-video-all from version 7.6+7ubuntu7.1 to 7.6+7ubuntu7 seems like a workaround for me.

share|improve this answer
    
Didn't work or me.. too bad I've already started reinstalling the OS. Also, I consider downgrading to 10.04.. –  AlexandrosD Feb 4 '12 at 19:38

I downgraded xorg-common, xserver-xorg-core, xserver-xephyr and libxfixes3, than all unity packages from daily to stable versions and it works.

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