maybe but it is still a bug. It does not change something to the result.
i changed description.

** Description changed:

  Watching movies on VLC i noticed that every some minutes the video
  hanged for some seconds. I found that a process called "/usr/bin/X :0
  -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background
  none" was using every 10 minutes for some seconds 50% of CPU making my
  weak CPU (atom N450) not capable to execute both processes together and
  video hang for some seconds every time. together with this process,
  another process called "xfce4-settings-helper" uses 10-15% of cpu. after
  some seconds both are going to idle.
  
  Xubuntu x64 12.04
  
  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: lightdm 1.2.0-0ubuntu2
  Uname: Linux 3.3.1-030301-generic x86_64
  ApportVersion: 2.0.1-0ubuntu4
  Architecture: amd64
  Date: Tue Apr 17 13:13:12 2012
  InstallationMedia: Xubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 
(20120328)
  SourcePackage: lightdm
  UpgradeStatus: No upgrade log present (probably fresh install)
  
  00:00.0 Host bridge [0600]: Intel Corporation N10 Family DMI Bridge 
[8086:a010]
  00:02.0 VGA compatible controller [0300]: Intel Corporation N10 Family 
Integrated Graphics Controller [8086:a011]
  00:02.1 Display controller [0380]: Intel Corporation N10 Family Integrated 
Graphics Controller [8086:a012]
  00:1b.0 Audio device [0403]: Intel Corporation N10/ICH 7 Family High 
Definition Audio Controller [8086:27d8] (rev 02)
  00:1c.0 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI Express 
Port 1 [8086:27d0] (rev 02)
  00:1c.1 PCI bridge [0604]: Intel Corporation N10/ICH 7 Family PCI Express 
Port 2 [8086:27d2] (rev 02)
  00:1d.0 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI 
Controller #1 [8086:27c8] (rev 02)
  00:1d.1 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI 
Controller #2 [8086:27c9] (rev 02)
  00:1d.2 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI 
Controller #3 [8086:27ca] (rev 02)
  00:1d.3 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB UHCI 
Controller #4 [8086:27cb] (rev 02)
  00:1d.7 USB controller [0c03]: Intel Corporation N10/ICH 7 Family USB2 EHCI 
Controller [8086:27cc] (rev 02)
  00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge 
[8086:2448] (rev e2)
  00:1f.0 ISA bridge [0601]: Intel Corporation NM10 Family LPC Controller 
[8086:27bc] (rev 02)
  00:1f.2 SATA controller [0106]: Intel Corporation N10/ICH7 Family SATA 
Controller [AHCI mode] [8086:27c1] (rev 02)
  00:1f.3 SMBus [0c05]: Intel Corporation N10/ICH 7 Family SMBus Controller 
[8086:27da] (rev 02)
  01:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR8132 Fast 
Ethernet [1969:1062] (rev c0)
  02:00.0 Network controller [0280]: Broadcom Corporation BCM4313 802.11b/g/n 
Wireless LAN Controller [14e4:4727] (rev 01)
  
  ---
  
- [    54.569] 
+ [    54.569]
  X.Org X Server 1.11.3
  Release Date: 2011-12-16
  [    54.569] X Protocol Version 11, Revision 0
  [    54.569] Build Operating System: Linux 2.6.24-29-server x86_64 Ubuntu
  [    54.569] Current Operating System: Linux verde-AOD260 
3.3.1-030301-generic #201204021435 SMP Mon Apr 2 18:36:11 UTC 2012 x86_64
  [    54.570] Kernel command line: 
BOOT_IMAGE=/boot/vmlinuz-3.3.1-030301-generic 
root=UUID=0390d585-9ac0-4822-bf02-399bf25e55e4 ro quiet splash vt.handoff=7
  [    54.570] Build Date: 05 April 2012  04:32:37AM
- [    54.570] xorg-server 2:1.11.4-0ubuntu10 (For technical support please see 
http://www.ubuntu.com/support) 
+ [    54.570] xorg-server 2:1.11.4-0ubuntu10 (For technical support please see 
http://www.ubuntu.com/support)
  [    54.570] Current version of pixman: 0.24.4
  [    54.570]    Before reporting problems, check http://wiki.x.org
-    to make sure that you have the latest version.
+    to make sure that you have the latest version.
  [    54.570] Markers: (--) probed, (**) from config file, (==) default 
setting,
-    (++) from command line, (!!) notice, (II) informational,
-    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
+    (++) from command line, (!!) notice, (II) informational,
+    (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
  [    54.570] (==) Log file: "/var/log/Xorg.0.log", Time: Tue Apr 17 17:09:59 
2012
  [    54.608] (==) Using system config directory "/usr/share/X11/xorg.conf.d"
  [    54.689] (==) No Layout section.  Using the first Screen section.
  [    54.689] (==) No screen section available. Using defaults.
  [    54.689] (**) |-->Screen "Default Screen Section" (0)
  [    54.689] (**) |   |-->Monitor "<default monitor>"
  [    54.709] (==) No monitor specified for screen "Default Screen Section".
-    Using a default monitor configuration.
+    Using a default monitor configuration.
  [    54.709] (==) Automatically adding devices
  [    54.709] (==) Automatically enabling devices
  [    54.745] (WW) The directory "/usr/share/fonts/X11/cyrillic" does not 
exist.
  [    54.745]    Entry deleted from font path.
  [    54.745] (WW) The directory "/usr/share/fonts/X11/100dpi/" does not exist.
  [    54.745]    Entry deleted from font path.
  [    54.745] (WW) The directory "/usr/share/fonts/X11/75dpi/" does not exist.
  [    54.745]    Entry deleted from font path.
  [    54.745] (WW) The directory "/usr/share/fonts/X11/100dpi" does not exist.
  [    54.745]    Entry deleted from font path.
  [    54.745] (WW) The directory "/usr/share/fonts/X11/75dpi" does not exist.
  [    54.745]    Entry deleted from font path.
  [    54.771] (WW) `fonts.dir' not found (or not valid) in 
"/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType".
  [    54.771]    Entry deleted from font path.
  [    54.771]    (Run 'mkfontdir' on 
"/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType").
  [    54.771] (==) FontPath set to:
-    /usr/share/fonts/X11/misc,
-    /usr/share/fonts/X11/Type1,
-    built-ins
+    /usr/share/fonts/X11/misc,
+    /usr/share/fonts/X11/Type1,
+    built-ins
  [    54.771] (==) ModulePath set to 
"/usr/lib/x86_64-linux-gnu/xorg/extra-modules,/usr/lib/xorg/extra-modules,/usr/lib/xorg/modules"
  [    54.771] (II) The server relies on udev to provide the list of input 
devices.
-    If no devices become available, reconfigure udev or disable AutoAddDevices.
+    If no devices become available, reconfigure udev or disable AutoAddDevices.
  [    54.771] (II) Loader magic: 0x7f36f57ddb00
  [    54.771] (II) Module ABI versions:
  [    54.771]    X.Org ANSI C Emulation: 0.4
  [    54.771]    X.Org Video Driver: 11.0
  [    54.771]    X.Org XInput driver : 16.0
  [    54.771]    X.Org Server Extension : 6.0
  [    54.773] (--) PCI:*(0:0:2:0) 8086:a011:1025:0349 rev 0, Mem @ 
0x98180000/524288, 0x80000000/268435456, 0x98000000/1048576, I/O @ 0x000060c0/8
  [    54.773] (--) PCI: (0:0:2:1) 8086:a012:1025:0349 rev 0, Mem @ 
0x98100000/524288
  [    54.774] (II) Open ACPI successful (/var/run/acpid.socket)
  [    54.774] (II) LoadModule: "extmod"
  [    54.797] (II) Loading /usr/lib/xorg/modules/extensions/libextmod.so
  [    54.812] (II) Module extmod: vendor="X.Org Foundation"
  [    54.812]    compiled for 1.11.3, module version = 1.0.0
  [    54.812]    Module class: X.Org Server Extension
  [    54.812]    ABI class: X.Org Server Extension, version 6.0
  [    54.812] (II) Loading extension MIT-SCREEN-SAVER
  [    54.812] (II) Loading extension XFree86-VidModeExtension
  [    54.812] (II) Loading extension XFree86-DGA
  [    54.812] (II) Loading extension DPMS
  [    54.812] (II) Loading extension XVideo
  [    54.812] (II) Loading extension XVideo-MotionCompensation
  [    54.812] (II) Loading extension X-Resource
  [    54.812] (II) LoadModule: "dbe"
  [    54.813] (II) Loading /usr/lib/xorg/modules/extensions/libdbe.so
  [    54.831] (II) Module dbe: vendor="X.Org Foundation"
  [    54.831]    compiled for 1.11.3, module version = 1.0.0
  [    54.831]    Module class: X.Org Server Extension
  [    54.831]    ABI class: X.Org Server Extension, version 6.0
  [    54.831] (II) Loading extension DOUBLE-BUFFER
  [    54.831] (II) LoadModule: "glx"
  [    54.832] (II) Loading /usr/lib/xorg/modules/extensions/libglx.so
  [    54.855] (II) Module glx: vendor="X.Org Foundation"
  [    54.855]    compiled for 1.11.3, module version = 1.0.0
  [    54.855]    ABI class: X.Org Server Extension, version 6.0
  [    54.855] (==) AIGLX enabled
  [    54.855] (II) Loading extension GLX
  [    54.856] (II) LoadModule: "record"
  [    54.856] (II) Loading /usr/lib/xorg/modules/extensions/librecord.so
  [    54.875] (II) Module record: vendor="X.Org Foundation"
  [    54.875]    compiled for 1.11.3, module version = 1.13.0
  [    54.875]    Module class: X.Org Server Extension
  [    54.875]    ABI class: X.Org Server Extension, version 6.0
  [    54.875] (II) Loading extension RECORD
  [    54.875] (II) LoadModule: "dri"
  [    54.875] (II) Loading /usr/lib/xorg/modules/extensions/libdri.so
  [    54.877] (II) Module dri: vendor="X.Org Foundation"
  [    54.877]    compiled for 1.11.3, module version = 1.0.0
  [    54.877]    ABI class: X.Org Server Extension, version 6.0
  [    54.877] (II) Loading extension XFree86-DRI
  [    54.877] (II) LoadModule: "dri2"
  [    54.878] (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so
  [    54.879] (II) Module dri2: vendor="X.Org Foundation"
  [    54.879]    compiled for 1.11.3, module version = 1.2.0
  [    54.879]    ABI class: X.Org Server Extension, version 6.0
  [    54.879] (II) Loading extension DRI2
  [    54.879] (==) Matched intel as autoconfigured driver 0
  [    54.879] (==) Matched vesa as autoconfigured driver 1
  [    54.879] (==) Matched fbdev as autoconfigured driver 2
  [    54.879] (==) Assigned the driver to the xf86ConfigLayout
  [    54.879] (II) LoadModule: "intel"
  [    54.880] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
  [    54.901] (II) Module intel: vendor="X.Org Foundation"
  [    54.901]    compiled for 1.11.3, module version = 2.17.0
  [    54.901]    Module class: X.Org Video Driver
  [    54.901]    ABI class: X.Org Video Driver, version 11.0
  [    54.901] (II) LoadModule: "vesa"
  [    54.902] (II) Loading /usr/lib/xorg/modules/drivers/vesa_drv.so
  [    54.911] (II) Module vesa: vendor="X.Org Foundation"
  [    54.911]    compiled for 1.11.3, module version = 2.3.0
  [    54.911]    Module class: X.Org Video Driver
  [    54.911]    ABI class: X.Org Video Driver, version 11.0
  [    54.911] (II) LoadModule: "fbdev"
  [    54.912] (II) Loading /usr/lib/xorg/modules/drivers/fbdev_drv.so
  [    54.922] (II) Module fbdev: vendor="X.Org Foundation"
  [    54.922]    compiled for 1.11.3, module version = 0.4.2
  [    54.922]    ABI class: X.Org Video Driver, version 11.0
  [    54.922] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
-    i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G,
-    E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
-    965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
-    4 Series, G45/G43, Q45/Q43, G41, B43, B43, Clarkdale, Arrandale,
-    Sandybridge Desktop (GT1), Sandybridge Desktop (GT2),
-    Sandybridge Desktop (GT2+), Sandybridge Mobile (GT1),
-    Sandybridge Mobile (GT2), Sandybridge Mobile (GT2+),
-    Sandybridge Server, Ivybridge Mobile (GT1), Ivybridge Mobile (GT2),
-    Ivybridge Desktop (GT1), Ivybridge Desktop (GT2), Ivybridge Server
+    i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G,
+    E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G,
+    965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45,
+    4 Series, G45/G43, Q45/Q43, G41, B43, B43, Clarkdale, Arrandale,
+    Sandybridge Desktop (GT1), Sandybridge Desktop (GT2),
+    Sandybridge Desktop (GT2+), Sandybridge Mobile (GT1),
+    Sandybridge Mobile (GT2), Sandybridge Mobile (GT2+),
+    Sandybridge Server, Ivybridge Mobile (GT1), Ivybridge Mobile (GT2),
+    Ivybridge Desktop (GT1), Ivybridge Desktop (GT2), Ivybridge Server
  [    54.935] (II) VESA: driver for VESA chipsets: vesa
  [    54.935] (II) FBDEV: driver for framebuffer: fbdev
  [    54.935] (++) using VT number 7
  
  [    54.940] (II) Loading /usr/lib/xorg/modules/drivers/intel_drv.so
  [    54.941] (WW) Falling back to old probe method for vesa
  [    54.941] (WW) Falling back to old probe method for fbdev
  [    54.941] (II) Loading sub module "fbdevhw"
  [    54.941] (II) LoadModule: "fbdevhw"
  [    54.943] (II) Loading /usr/lib/xorg/modules/libfbdevhw.so
  [    54.944] (II) Module fbdevhw: vendor="X.Org Foundation"
  [    54.944]    compiled for 1.11.3, module version = 0.0.2
  [    54.944]    ABI class: X.Org Video Driver, version 11.0
  [    54.944] drmOpenDevice: node name is /dev/dri/card0
  [    54.945] drmOpenDevice: open result is 9, (OK)
  [    54.945] drmOpenByBusid: Searching for BusID pci:0000:00:02.0
  [    54.945] drmOpenDevice: node name is /dev/dri/card0
  [    54.945] drmOpenDevice: open result is 9, (OK)
  [    54.945] drmOpenByBusid: drmOpenMinor returns 9
  [    54.945] drmOpenByBusid: drmGetBusid reports pci:0000:00:02.0
  [    54.945] (II) intel(0): Creating default Display subsection in Screen 
section
-    "Default Screen Section" for depth/fbbpp 24/32
+    "Default Screen Section" for depth/fbbpp 24/32
  [    54.945] (==) intel(0): Depth 24, (--) framebuffer bpp 32
  [    54.945] (==) intel(0): RGB weight 888
  [    54.945] (==) intel(0): Default visual is TrueColor
  [    54.945] (II) intel(0): Integrated Graphics Chipset: Intel(R) Pineview GM
  [    54.945] (--) intel(0): Chipset: "Pineview GM"
  [    54.945] (**) intel(0): Relaxed fencing enabled
  [    54.945] (**) intel(0): Wait on SwapBuffers? enabled
  [    54.945] (**) intel(0): Triple buffering? enabled
  [    54.945] (**) intel(0): Framebuffer tiled
  [    54.945] (**) intel(0): Pixmaps tiled
  [    54.946] (**) intel(0): 3D buffers tiled
  [    54.946] (**) intel(0): SwapBuffers wait enabled
  [    54.946] (==) intel(0): video overlay key set to 0x101fe
  [    54.946] (II) intel(0): Output LVDS1 has no monitor section
  [    55.044] (II) intel(0): found backlight control interface 
/sys/class/backlight/acpi_video0
  [    55.076] (II) intel(0): Output VGA1 has no monitor section
  [    55.076] (II) intel(0): EDID for output LVDS1
  [    55.076] (II) intel(0): Manufacturer: AUO  Model: 61d2  Serial#: 0
  [    55.076] (II) intel(0): Year: 2009  Week: 0
  [    55.076] (II) intel(0): EDID Version: 1.3
  [    55.076] (II) intel(0): Digital Display Input
  [    55.076] (II) intel(0): Max Image Size [cm]: horiz.: 22  vert.: 13
  [    55.076] (II) intel(0): Gamma: 2.20
  [    55.076] (II) intel(0): No DPMS capabilities specified
- [    55.076] (II) intel(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4 
+ [    55.076] (II) intel(0): Supported color encodings: RGB 4:4:4 YCrCb 4:4:4
  [    55.077] (II) intel(0): First detailed timing is preferred mode
  [    55.077] (II) intel(0): redX: 0.590 redY: 0.345   greenX: 0.325 greenY: 
0.540
  [    55.077] (II) intel(0): blueX: 0.150 blueY: 0.145   whiteX: 0.313 whiteY: 
0.329
  [    55.077] (II) intel(0): Manufacturer's mask: 0
  [    55.077] (II) intel(0): Supported detailed timing:
  [    55.077] (II) intel(0): clock: 49.8 MHz   Image Size:  222 x 125 mm
  [    55.077] (II) intel(0): h_active: 1024  h_sync: 1072  h_sync_end 1104 
h_blank_end 1338 h_border: 0
  [    55.077] (II) intel(0): v_active: 600  v_sync: 602  v_sync_end 608 
v_blanking: 620 v_border: 0
  [    55.077] (II) intel(0): Unknown vendor-specific block f
  [    55.077] (II) intel(0):  AUO
  [    55.077] (II) intel(0):  B101AW06 V1
  [    55.077] (II) intel(0): EDID (in hex):
  [    55.077] (II) intel(0):    00ffffffffffff0006afd26100000000
  [    55.077] (II) intel(0):    0013010380160d780a15859758538a26
  [    55.077] (II) intel(0):    25505400000001010101010101010101
  [    55.077] (II) intel(0):    0101010101017413003a415814203020
  [    55.077] (II) intel(0):    2600de7d000000180000000f00000000
  [    55.077] (II) intel(0):    00000000000000000020000000fe0041
  [    55.077] (II) intel(0):    554f0a202020202020202020000000fe
  [    55.078] (II) intel(0):    004231303141573036205631200a0029
  [    55.078] (II) intel(0): EDID vendor "AUO", prod id 25042
  [    55.078] (II) intel(0): Printing DDC gathered Modelines:
  [    55.078] (II) intel(0): Modeline "1024x600"x0.0   49.80  1024 1072 1104 
1338  600 602 608 620 -hsync -vsync (37.2 kHz)
  [    55.078] (II) intel(0): Not using default mode "320x240" (doublescan mode 
not supported)
  [    55.078] (II) intel(0): Not using default mode "400x300" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "400x300" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "512x384" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "640x480" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "640x512" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "800x600" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "576x432" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "680x384" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "680x384" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "700x525" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "720x450" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "800x512" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "840x525" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "840x525" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "960x540" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Not using default mode "960x600" (doublescan mode 
not supported)
  [    55.079] (II) intel(0): Printing probed modes for output LVDS1
  [    55.079] (II) intel(0): Modeline "1024x600"x60.0   49.80  1024 1072 1104 
1338  600 602 608 620 -hsync -vsync (37.2 kHz)
  [    55.080] (II) intel(0): Modeline "800x600"x60.3   40.00  800 840 968 1056 
 600 601 605 628 +hsync +vsync (37.9 kHz)
  [    55.080] (II) intel(0): Modeline "800x600"x56.2   36.00  800 824 896 1024 
 600 601 603 625 +hsync +vsync (35.2 kHz)
  [    55.080] (II) intel(0): Modeline "640x480"x59.9   25.18  640 656 752 800  
480 490 492 525 -hsync -vsync (31.5 kHz)
  [    55.112] (II) intel(0): EDID for output VGA1
  [    55.112] (II) intel(0): Output LVDS1 connected
  [    55.112] (II) intel(0): Output VGA1 disconnected
  [    55.112] (II) intel(0): Using exact sizes for initial modes
  [    55.112] (II) intel(0): Output LVDS1 using initial mode 1024x600
  [    55.112] (II) intel(0): Using default gamma of (1.0, 1.0, 1.0) unless 
otherwise stated.
  [    55.112] (II) intel(0): Kernel page flipping support detected, enabling
  [    55.112] (**) intel(0): Display dimensions: (220, 130) mm
  [    55.112] (**) intel(0): DPI set to (118, 117)
  [    55.112] (II) Loading sub module "fb"
  [    55.112] (II) LoadModule: "fb"
  [    55.113] (II) Loading /usr/lib/xorg/modules/libfb.so
  [    55.128] (II) Module fb: vendor="X.Org Foundation"
  [    55.128]    compiled for 1.11.3, module version = 1.0.0
  [    55.128]    ABI class: X.Org ANSI C Emulation, version 0.4
  [    55.128] (II) Loading sub module "dri2"
  [    55.128] (II) LoadModule: "dri2"
  [    55.129] (II) Loading /usr/lib/xorg/modules/extensions/libdri2.so
  [    55.129] (II) Module dri2: vendor="X.Org Foundation"
  [    55.129]    compiled for 1.11.3, module version = 1.2.0
  [    55.129]    ABI class: X.Org Server Extension, version 6.0
  [    55.129] (II) UnloadModule: "vesa"
  [    55.129] (II) Unloading vesa
  [    55.129] (II) UnloadModule: "fbdev"
  [    55.129] (II) Unloading fbdev
  [    55.129] (II) UnloadModule: "fbdevhw"
  [    55.129] (II) Unloading fbdevhw
  [    55.129] (==) Depth 24 pixmap format is 32 bpp
  [    55.130] (II) intel(0): [DRI2] Setup complete
  [    55.130] (II) intel(0): [DRI2]   DRI driver: i915
  [    55.130] (II) intel(0): Allocated new frame buffer 1024x600 stride 4096, 
tiled
  [    55.158] (II) UXA(0): Driver registered support for the following 
operations:
  [    55.158] (II)         solid
  [    55.158] (II)         copy
  [    55.158] (II)         composite (RENDER acceleration)
  [    55.158] (II)         put_image
  [    55.158] (II)         get_image
  [    55.158] (==) intel(0): Backing store disabled
  [    55.158] (==) intel(0): Silken mouse enabled
  [    55.158] (II) intel(0): Initializing HW Cursor
  [    55.196] (II) intel(0): RandR 1.2 enabled, ignore the following RandR 
disabled message.
  [    55.198] (==) intel(0): DPMS enabled
  [    55.198] (==) intel(0): Intel XvMC decoder disabled
  [    55.198] (II) intel(0): Set up textured video
  [    55.201] (II) intel(0): Set up overlay video
  [    55.201] (II) intel(0): direct rendering: DRI2 Enabled
  [    55.201] (==) intel(0): hotplug detection: "enabled"
  [    55.201] (--) RandR disabled
  [    55.201] (II) Initializing built-in extension Generic Event Extension
  [    55.201] (II) Initializing built-in extension SHAPE
  [    55.202] (II) Initializing built-in extension MIT-SHM
  [    55.202] (II) Initializing built-in extension XInputExtension
  [    55.202] (II) Initializing built-in extension XTEST
  [    55.202] (II) Initializing built-in extension BIG-REQUESTS
  [    55.202] (II) Initializing built-in extension SYNC
  [    55.202] (II) Initializing built-in extension XKEYBOARD
  [    55.202] (II) Initializing built-in extension XC-MISC
  [    55.202] (II) Initializing built-in extension SECURITY
  [    55.202] (II) Initializing built-in extension XINERAMA
  [    55.202] (II) Initializing built-in extension XFIXES
  [    55.202] (II) Initializing built-in extension RENDER
  [    55.202] (II) Initializing built-in extension RANDR
  [    55.202] (II) Initializing built-in extension COMPOSITE
  [    55.202] (II) Initializing built-in extension DAMAGE
  [    55.610] (II) AIGLX: enabled GLX_MESA_copy_sub_buffer
  [    55.610] (II) AIGLX: enabled GLX_INTEL_swap_event
  [    55.610] (II) AIGLX: enabled GLX_SGI_swap_control and 
GLX_MESA_swap_control
  [    55.610] (II) AIGLX: GLX_EXT_texture_from_pixmap backed by buffer objects
  [    55.610] (II) AIGLX: Loaded and initialized i915
  [    55.610] (II) GLX: Initialized DRI2 GL provider for screen 0
  [    55.611] (II) intel(0): Setting screen physical size to 270 x 158
  [    55.803] (II) XKB: reuse xkmfile 
/var/lib/xkb/server-B20D7FC79C7F597315E3E501AEF10E0D866E8E92.xkm
  [    55.820] (II) config/udev: Adding input device Power Button 
(/dev/input/event3)
  [    55.820] (**) Power Button: Applying InputClass "evdev keyboard catchall"
  [    55.820] (II) LoadModule: "evdev"
  [    55.821] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.857] (II) Module evdev: vendor="X.Org Foundation"
  [    55.857]    compiled for 1.11.3, module version = 2.7.0
  [    55.857]    Module class: X.Org XInput Driver
  [    55.857]    ABI class: X.Org XInput driver, version 16.0
  [    55.857] (II) Using input driver 'evdev' for 'Power Button'
  [    55.857] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.857] (**) Power Button: always reports core events
  [    55.857] (**) evdev: Power Button: Device: "/dev/input/event3"
  [    55.858] (--) evdev: Power Button: Vendor 0 Product 0x1
  [    55.858] (--) evdev: Power Button: Found keys
  [    55.858] (II) evdev: Power Button: Configuring as keyboard
  [    55.858] (**) Option "config_info" 
"udev:/sys/devices/LNXSYSTM:00/LNXPWRBN:00/input/input3/event3"
  [    55.858] (II) XINPUT: Adding extended input device "Power Button" (type: 
KEYBOARD, id 6)
  [    55.858] (**) Option "xkb_rules" "evdev"
  [    55.858] (**) Option "xkb_model" "pc105"
  [    55.858] (**) Option "xkb_layout" "us,gr"
  [    55.858] (**) Option "xkb_variant" ","
  [    55.858] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
  [    55.863] (II) XKB: reuse xkmfile 
/var/lib/xkb/server-9078D1F245FADE3CB4AD835262E1036C04792E56.xkm
  [    55.886] (II) config/udev: Adding input device Video Bus 
(/dev/input/event8)
  [    55.886] (**) Video Bus: Applying InputClass "evdev keyboard catchall"
  [    55.886] (II) Using input driver 'evdev' for 'Video Bus'
  [    55.886] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.886] (**) Video Bus: always reports core events
  [    55.886] (**) evdev: Video Bus: Device: "/dev/input/event8"
  [    55.886] (--) evdev: Video Bus: Vendor 0 Product 0x6
  [    55.886] (--) evdev: Video Bus: Found keys
  [    55.886] (II) evdev: Video Bus: Configuring as keyboard
  [    55.886] (**) Option "config_info" 
"udev:/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input8/event8"
  [    55.886] (II) XINPUT: Adding extended input device "Video Bus" (type: 
KEYBOARD, id 7)
  [    55.886] (**) Option "xkb_rules" "evdev"
  [    55.886] (**) Option "xkb_model" "pc105"
  [    55.887] (**) Option "xkb_layout" "us,gr"
  [    55.887] (**) Option "xkb_variant" ","
  [    55.887] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
  [    55.888] (II) config/udev: Adding input device Power Button 
(/dev/input/event0)
  [    55.889] (**) Power Button: Applying InputClass "evdev keyboard catchall"
  [    55.889] (II) Using input driver 'evdev' for 'Power Button'
  [    55.889] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.889] (**) Power Button: always reports core events
  [    55.889] (**) evdev: Power Button: Device: "/dev/input/event0"
  [    55.889] (--) evdev: Power Button: Vendor 0 Product 0x1
  [    55.889] (--) evdev: Power Button: Found keys
  [    55.889] (II) evdev: Power Button: Configuring as keyboard
  [    55.889] (**) Option "config_info" 
"udev:/sys/devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input0/event0"
  [    55.889] (II) XINPUT: Adding extended input device "Power Button" (type: 
KEYBOARD, id 8)
  [    55.889] (**) Option "xkb_rules" "evdev"
  [    55.889] (**) Option "xkb_model" "pc105"
  [    55.889] (**) Option "xkb_layout" "us,gr"
  [    55.889] (**) Option "xkb_variant" ","
  [    55.889] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
  [    55.892] (II) config/udev: Adding input device Lid Switch 
(/dev/input/event2)
  [    55.892] (II) No input driver specified, ignoring this device.
  [    55.892] (II) This device may have been added with another device file.
  [    55.893] (II) config/udev: Adding input device Sleep Button 
(/dev/input/event1)
  [    55.893] (**) Sleep Button: Applying InputClass "evdev keyboard catchall"
  [    55.893] (II) Using input driver 'evdev' for 'Sleep Button'
  [    55.893] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.893] (**) Sleep Button: always reports core events
  [    55.894] (**) evdev: Sleep Button: Device: "/dev/input/event1"
  [    55.894] (--) evdev: Sleep Button: Vendor 0 Product 0x3
  [    55.894] (--) evdev: Sleep Button: Found keys
  [    55.894] (II) evdev: Sleep Button: Configuring as keyboard
  [    55.894] (**) Option "config_info" 
"udev:/sys/devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input1/event1"
  [    55.894] (II) XINPUT: Adding extended input device "Sleep Button" (type: 
KEYBOARD, id 9)
  [    55.894] (**) Option "xkb_rules" "evdev"
  [    55.894] (**) Option "xkb_model" "pc105"
  [    55.894] (**) Option "xkb_layout" "us,gr"
  [    55.894] (**) Option "xkb_variant" ","
  [    55.894] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
  [    55.897] (II) config/udev: Adding input device HDA Intel Mic 
(/dev/input/event10)
  [    55.897] (II) No input driver specified, ignoring this device.
  [    55.897] (II) This device may have been added with another device file.
  [    55.897] (II) config/udev: Adding input device HDA Intel Headphone 
(/dev/input/event11)
  [    55.898] (II) No input driver specified, ignoring this device.
  [    55.898] (II) This device may have been added with another device file.
  [    55.899] (II) config/udev: Adding input device Microsoft Microsoft 
3-Button Mouse with IntelliEye(TM) (/dev/input/event5)
  [    55.899] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): 
Applying InputClass "evdev pointer catchall"
  [    55.899] (II) Using input driver 'evdev' for 'Microsoft Microsoft 
3-Button Mouse with IntelliEye(TM)'
  [    55.899] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.899] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): 
always reports core events
  [    55.899] (**) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): Device: "/dev/input/event5"
  [    55.899] (--) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): Vendor 0x45e Product 0x40
  [    55.899] (--) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): Found 3 mouse buttons
  [    55.899] (--) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): Found scroll wheel(s)
  [    55.899] (--) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): Found relative axes
  [    55.899] (--) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): Found x and y relative axes
  [    55.899] (II) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): Configuring as mouse
  [    55.899] (II) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): Adding scrollwheel support
  [    55.899] (**) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): YAxisMapping: buttons 4 and 5
  [    55.899] (**) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): EmulateWheelButton: 4, EmulateWheelInertia: 10, 
EmulateWheelTimeout: 200
  [    55.899] (**) Option "config_info" 
"udev:/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input5/event5"
  [    55.900] (II) XINPUT: Adding extended input device "Microsoft Microsoft 
3-Button Mouse with IntelliEye(TM)" (type: MOUSE, id 10)
  [    55.900] (II) evdev: Microsoft Microsoft 3-Button Mouse with 
IntelliEye(TM): initialized for relative axes.
  [    55.900] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): 
(accel) keeping acceleration scheme 1
  [    55.900] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): 
(accel) acceleration profile 0
  [    55.901] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): 
(accel) acceleration factor: 2.000
  [    55.901] (**) Microsoft Microsoft 3-Button Mouse with IntelliEye(TM): 
(accel) acceleration threshold: 4
  [    55.901] (II) config/udev: Adding input device Microsoft Microsoft 
3-Button Mouse with IntelliEye(TM) (/dev/input/mouse0)
  [    55.902] (II) No input driver specified, ignoring this device.
  [    55.902] (II) This device may have been added with another device file.
  [    55.903] (II) config/udev: Adding input device 1.3M WebCam 
(/dev/input/event7)
  [    55.903] (**) 1.3M WebCam: Applying InputClass "evdev keyboard catchall"
  [    55.903] (II) Using input driver 'evdev' for '1.3M WebCam'
  [    55.903] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.903] (**) 1.3M WebCam: always reports core events
  [    55.903] (**) evdev: 1.3M WebCam: Device: "/dev/input/event7"
  [    55.903] (--) evdev: 1.3M WebCam: Vendor 0x4f2 Product 0xb1d8
  [    55.903] (--) evdev: 1.3M WebCam: Found keys
  [    55.903] (II) evdev: 1.3M WebCam: Configuring as keyboard
  [    55.903] (**) Option "config_info" 
"udev:/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-4/1-4:1.0/input/input7/event7"
  [    55.903] (II) XINPUT: Adding extended input device "1.3M WebCam" (type: 
KEYBOARD, id 11)
  [    55.903] (**) Option "xkb_rules" "evdev"
  [    55.903] (**) Option "xkb_model" "pc105"
  [    55.903] (**) Option "xkb_layout" "us,gr"
  [    55.903] (**) Option "xkb_variant" ","
  [    55.903] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
  [    55.905] (II) config/udev: Adding input device AT Translated Set 2 
keyboard (/dev/input/event4)
  [    55.905] (**) AT Translated Set 2 keyboard: Applying InputClass "evdev 
keyboard catchall"
  [    55.905] (II) Using input driver 'evdev' for 'AT Translated Set 2 
keyboard'
  [    55.905] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.906] (**) AT Translated Set 2 keyboard: always reports core events
  [    55.906] (**) evdev: AT Translated Set 2 keyboard: Device: 
"/dev/input/event4"
  [    55.906] (--) evdev: AT Translated Set 2 keyboard: Vendor 0x1 Product 0x1
  [    55.906] (--) evdev: AT Translated Set 2 keyboard: Found keys
  [    55.906] (II) evdev: AT Translated Set 2 keyboard: Configuring as keyboard
  [    55.906] (**) Option "config_info" 
"udev:/sys/devices/platform/i8042/serio0/input/input4/event4"
  [    55.906] (II) XINPUT: Adding extended input device "AT Translated Set 2 
keyboard" (type: KEYBOARD, id 12)
  [    55.906] (**) Option "xkb_rules" "evdev"
  [    55.906] (**) Option "xkb_model" "pc105"
  [    55.906] (**) Option "xkb_layout" "us,gr"
  [    55.906] (**) Option "xkb_variant" ","
  [    55.906] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
  [    55.908] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad 
(/dev/input/event9)
  [    55.908] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "evdev 
touchpad catchall"
  [    55.908] (**) SynPS/2 Synaptics TouchPad: Applying InputClass "touchpad 
catchall"
  [    55.908] (II) LoadModule: "synaptics"
  [    55.909] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
  [    55.929] (II) Module synaptics: vendor="X.Org Foundation"
  [    55.929]    compiled for 1.11.3, module version = 1.5.99
  [    55.929]    Module class: X.Org XInput Driver
  [    55.929]    ABI class: X.Org XInput driver, version 16.0
  [    55.929] (II) Using input driver 'synaptics' for 'SynPS/2 Synaptics 
TouchPad'
  [    55.929] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
  [    55.929] (**) SynPS/2 Synaptics TouchPad: always reports core events
  [    55.929] (**) Option "Device" "/dev/input/event9"
  [    55.930] (II) synaptics: SynPS/2 Synaptics TouchPad: ignoring touch 
events for semi-multitouch device
  [    55.930] (--) synaptics: SynPS/2 Synaptics TouchPad: x-axis range 1472 - 
5612
  [    55.930] (--) synaptics: SynPS/2 Synaptics TouchPad: y-axis range 1408 - 
4618
  [    55.930] (--) synaptics: SynPS/2 Synaptics TouchPad: pressure range 0 - 
255
  [    55.930] (--) synaptics: SynPS/2 Synaptics TouchPad: finger width range 0 
- 15
  [    55.930] (--) synaptics: SynPS/2 Synaptics TouchPad: buttons: left right 
double triple
  [    55.930] (--) synaptics: SynPS/2 Synaptics TouchPad: Vendor 0x2 Product 
0x7
  [    55.930] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
  [    55.930] (**) SynPS/2 Synaptics TouchPad: always reports core events
  [    55.931] (**) Option "config_info" 
"udev:/sys/devices/platform/i8042/serio1/input/input9/event9"
  [    55.931] (II) XINPUT: Adding extended input device "SynPS/2 Synaptics 
TouchPad" (type: TOUCHPAD, id 13)
  [    55.931] (**) synaptics: SynPS/2 Synaptics TouchPad: (accel) MinSpeed is 
now constant deceleration 2.5
  [    55.931] (**) synaptics: SynPS/2 Synaptics TouchPad: MaxSpeed is now 1.75
  [    55.931] (**) synaptics: SynPS/2 Synaptics TouchPad: AccelFactor is now 
0.038
  [    55.932] (**) SynPS/2 Synaptics TouchPad: (accel) keeping acceleration 
scheme 1
  [    55.932] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration profile 1
  [    55.932] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration factor: 
2.000
  [    55.932] (**) SynPS/2 Synaptics TouchPad: (accel) acceleration threshold: 
4
  [    55.932] (--) synaptics: SynPS/2 Synaptics TouchPad: touchpad found
  [    55.933] (II) config/udev: Adding input device SynPS/2 Synaptics TouchPad 
(/dev/input/mouse1)
  [    55.933] (**) SynPS/2 Synaptics TouchPad: Ignoring device from InputClass 
"touchpad ignore duplicates"
  [    55.940] (II) config/udev: Adding input device Acer WMI hotkeys 
(/dev/input/event6)
  [    55.940] (**) Acer WMI hotkeys: Applying InputClass "evdev keyboard 
catchall"
  [    55.940] (II) Using input driver 'evdev' for 'Acer WMI hotkeys'
  [    55.940] (II) Loading /usr/lib/xorg/modules/input/evdev_drv.so
  [    55.940] (**) Acer WMI hotkeys: always reports core events
  [    55.940] (**) evdev: Acer WMI hotkeys: Device: "/dev/input/event6"
  [    55.940] (--) evdev: Acer WMI hotkeys: Vendor 0 Product 0
  [    55.940] (--) evdev: Acer WMI hotkeys: Found keys
  [    55.940] (II) evdev: Acer WMI hotkeys: Configuring as keyboard
  [    55.940] (**) Option "config_info" 
"udev:/sys/devices/virtual/input/input6/event6"
  [    55.940] (II) XINPUT: Adding extended input device "Acer WMI hotkeys" 
(type: KEYBOARD, id 14)
  [    55.940] (**) Option "xkb_rules" "evdev"
  [    55.940] (**) Option "xkb_model" "pc105"
  [    55.941] (**) Option "xkb_layout" "us,gr"
  [    55.941] (**) Option "xkb_variant" ","
  [    55.941] (**) Option "xkb_options" "grp:alt_shift_toggle,grp_led:scroll"
  [    69.356] (II) intel(0): EDID vendor "AUO", prod id 25042
  [    69.356] (II) intel(0): Printing DDC gathered Modelines:
  [    69.356] (II) intel(0): Modeline "1024x600"x0.0   49.80  1024 1072 1104 
1338  600 602 608 620 -hsync -vsync (37.2 kHz)
  [    69.388] (II) intel(0): EDID vendor "AUO", prod id 25042
  [    69.388] (II) intel(0): Printing DDC gathered Modelines:
  [    69.388] (II) intel(0): Modeline "1024x600"x0.0   49.80  1024 1072 1104 
1338  600 602 608 620 -hsync -vsync (37.2 kHz)
  [    74.529] (II) intel(0): EDID vendor "AUO", prod id 25042
  [    74.529] (II) intel(0): Printing DDC gathered Modelines:
  [    74.529] (II) intel(0): Modeline "1024x600"x0.0   49.80  1024 1072 1104 
1338  600 602 608 620 -hsync -vsync (37.2 kHz)
  [    74.570] (II) intel(0): EDID vendor "AUO", prod id 25042
  [    74.570] (II) intel(0): Printing DDC gathered Modelines:
  [    74.570] (II) intel(0): Modeline "1024x600"x0.0   49.80  1024 1072 1104 
1338  600 602 608 620 -hsync -vsync (37.2 kHz)
  [    74.602] (II) intel(0): EDID vendor "AUO", prod id 25042
  [    74.602] (II) intel(0): Printing DDC gathered Modelines:
  [    74.602] (II) intel(0): Modeline "1024x600"x0.0   49.80  1024 1072 1104 
1338  600 602 608 620 -hsync -vsync (37.2 kHz)

** Summary changed:

- lightdm every 10 minutes uses 50% of CPU causing video playback hang
+ Xorg(?) every 10 minutes uses 50% of CPU causing video playback hang

** Changed in: lightdm (Ubuntu)
       Status: Incomplete => New

** Package changed: lightdm (Ubuntu) => xorg (Ubuntu)

** Changed in: xorg (Ubuntu)
     Assignee: (unassigned) => giannis (karzisss)

-- 
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/983832

Title:
  Xorg(?) every 10 minutes uses 50% of CPU causing video playback hang

To manage notifications about this bug go to:
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