[Ubuntu-x-swat] [Bug 1326688] Re: Can't disable panning on multiple monitors
I have these problems on a W520 (i.e. Nvidia driver), but on Arch Linux. Still, what I have found, and a workaround: The Nvidia driver will try to make the whole size of the screen (set with xrandr --fb or by placing monitors) accessible with the monitors it has, and if need be with panning. It will ignore or overwrite all attempts to disable that panning if the driver thinks you need it. (It's a feature, they brag about it under question How are virtual screen dimensions determined in TwinView? at http://us.download.nvidia.com/XFree86/Linux- x86_64/346.35/README/configtwinview.html On my setup, I use two external monitors that are connected to the Nvidia card along with the built-in monitor that is connected to the internal Intel chip. The intel chip servers as a Sink provider for the Nvidia driver, so all three monitors form a single screen, like so: xrandr --setprovideroutputsource modesetting NVIDIA-0 xrandr --fb 5760x1200 --output LVDS-1-0 --mode 1920x1080 --pos 3840x120 --output VGA-0 --mode 1920x1200 --pos 1920x0 --output DP-3 --mode 1920x1200 --pos 0x0 The nvidia driver (so it seems) will accept that the whole screen is now 5760x1200 big, but only uses the two monitors that are actually connected to the card to cover that area with panning. So the right- most laptop display worked fine, while the two monitors would pan along left and right. I have worked around this by abusing that while the Nvidia driver ignores or overwrites the core panning parameters, it doesn't meddle with the panning border. I modified the command above like so: xrandr --fb 5760x1200 --output LVDS-1-0 --mode 1920x1080 --pos 3840x120 --panning 5760x1200+0+0/0x0+0+0/-3840/0/0/0 --output VGA-0 --mode 1920x1200 --pos 1920x0 --panning 5760x1200+0+0/0x0+0+0/-1920/0/-1920/0 --output DP-3 --mode 1920x1200 --pos 0x0 --panning 5760x1200+0+0/0x0+0+0/0/0/-3840/0 This sets the borders that trigger the panning so far out that they are all off screen. So panning is technically still enabled but impossible to trigger. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1326688 Title: Can't disable panning on multiple monitors To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1326688/+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
[Ubuntu-x-swat] [Bug 1224274] Re: touchpad scrolling lost
ok, now I found the problem. Default setting got replaced: now I had to scroll with two fingers... but the option is also there to scoll on the sides :) Thanks ** Changed in: xorg (Ubuntu) Status: New = Invalid -- 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/1224274 Title: touchpad scrolling lost To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1224274/+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
[Ubuntu-x-swat] [Bug 1224274] [NEW] touchpad scrolling lost
Public bug reported: For some days, I cannot use any more the scroll function from my touch pad (on the right side of the touch pad is a line painted where it was possible to sroll up and down). It cannot be so long, but I seen it for ~2-3 days before it was ok. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: xorg 1:7.7+1ubuntu5 ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0 Uname: Linux 3.11.0-7-generic x86_64 NonfreeKernelModules: nvidia .proc.driver.nvidia.gpus.0: Error: [Errno 21] Ist ein Verzeichnis: '/proc/driver/nvidia/gpus/0' .proc.driver.nvidia.registry: Binary: .proc.driver.nvidia.version: NVRM version: NVIDIA UNIX x86_64 Kernel Module 325.15 Wed Jul 31 18:50:56 PDT 2013 GCC version: gcc version 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu1) ApportVersion: 2.12.1-0ubuntu3 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None Date: Thu Sep 12 07:15:00 2013 DistUpgraded: Fresh install DistroCodename: saucy DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation GT216M [GeForce GT 330M] [10de:0a29] (rev a2) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:0442] InstallationDate: Installed on 2013-08-19 (23 days ago) InstallationMedia: Ubuntu-GNOME 13.10 Saucy Salamander - Alpha amd64 (20130724) MachineType: Dell Inc. Vostro 3700 MarkForUpload: True ProcEnviron: SHELL=/bin/bash TERM=xterm PATH=(custom, no user) LANG=de_DE.UTF-8 XDG_RUNTIME_DIR=set ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-7-generic root=UUID=bf489e32-ad86-4061-bc27-783a02835835 ro quiet splash acpi_osi=Linux SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 10/25/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.vendor: Dell Inc. dmi.board.version: A10 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: A10 dmi.modalias: dmi:bvnDellInc.:bvrA10:bd10/25/2010:svnDellInc.:pnVostro3700:pvrA10:rvnDellInc.:rn:rvrA10:cvnDellInc.:ct8:cvrA10: dmi.product.name: Vostro 3700 dmi.product.version: A10 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.46-1 version.libgl1-mesa-dri: libgl1-mesa-dri 9.2-1ubuntu1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 9.2-1ubuntu1 version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A version.xserver-xorg-core: xserver-xorg-core 2:1.14.2.901-2ubuntu4 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu6 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.14-4ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1 xserver.bootTime: Thu Sep 12 07:11:06 2013 xserver.configfile: /etc/X11/xorg.conf xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.outputs: xserver.version: 2:1.14.2.901-2ubuntu4 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug saucy ubuntu -- 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/1224274 Title: touchpad scrolling lost To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1224274/+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
[Ubuntu-x-swat] [Bug 933104] [NEW] 295.20 for precise release
Public bug reported: Hi, yesterday NVIDIA released a new driver version. It will be fine, when version 295.20 get uploaded fast that it get into the precise release. http://www.nvnews.net/vbulletin/showthread.php?t=122606 ** Affects: nvidia-graphics-drivers (Ubuntu) Importance: Undecided Status: New ** Tags: precise rls-mgr-p-tracking ubuntu ** Description changed: Hi, - today NVIDIA released a new driver version. It will be fine, when - version 295.20 get uploaded fast that it get get into the precise - release. + yesterday NVIDIA released a new driver version. It will be fine, when + version 295.20 get uploaded fast that it get into the precise release. http://www.nvnews.net/vbulletin/showthread.php?t=122606 ** Tags added: ubuntu -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to nvidia-graphics-drivers in Ubuntu. https://bugs.launchpad.net/bugs/933104 Title: 295.20 for precise release To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers/+bug/933104/+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
[Ubuntu-x-swat] [Bug 888808] [NEW] EQ overflowing. The server is probably stuck in an infinite loop.
Public bug reported: I found this in my logfile: possible it can help to make xorg/driver better [ 509.209] [mi] EQ overflowing. The server is probably stuck in an infinite loop. [ 509.224] Backtrace: [ 510.673] 0: /usr/bin/X (xorg_backtrace+0x37) [0x80a66f7] [ 510.673] 1: /usr/bin/X (mieqEnqueue+0x1d1) [0x80a06b1] [ 510.673] 2: /usr/bin/X (xf86PostMotionEventM+0xb0) [0x80c7e60] [ 510.674] 3: /usr/bin/X (xf86PostMotionEventP+0x86) [0x80c7fc6] [ 510.674] 4: /usr/lib/xorg/modules/input/wacom_drv.so (0xb96000+0x4b3e) [0xb9ab3e] [ 510.674] 5: /usr/lib/xorg/modules/input/wacom_drv.so (0xb96000+0x5d5f) [0xb9bd5f] [ 510.674] 6: /usr/lib/xorg/modules/input/wacom_drv.so (0xb96000+0x7e92) [0xb9de92] [ 510.674] 7: /usr/lib/xorg/modules/input/wacom_drv.so (0xb96000+0x354c) [0xb9954c] [ 510.674] 8: /usr/lib/xorg/modules/input/wacom_drv.so (0xb96000+0x37b2) [0xb997b2] [ 510.674] 9: /usr/bin/X (0x8048000+0x6cb81) [0x80b4b81] [ 510.674] 10: /usr/bin/X (0x8048000+0x12d2a2) [0x81752a2] [ 510.674] 11: (vdso) (__kernel_sigreturn+0x0) [0xaef400] [ 510.674] 12: /usr/bin/X (0x8048000+0xea078) [0x8132078] [ 510.674] 13: /usr/bin/X (0x8048000+0xee08f) [0x813608f] [ 510.674] 14: /usr/bin/X (0x8048000+0xee520) [0x8136520] [ 510.674] 15: /usr/bin/X (0x8048000+0x114559) [0x815c559] [ 510.674] 16: /usr/bin/X (mieqProcessDeviceEvent+0x2ea) [0x80a0c0a] [ 510.674] 17: /usr/bin/X (mieqProcessInputEvents+0xc2) [0x80a0d32] [ 510.674] 18: /usr/bin/X (ProcessInputEvents+0x14) [0x80b4c34] [ 510.674] 19: /usr/bin/X (0x8048000+0x29ec1) [0x8071ec1] [ 510.674] 20: /usr/bin/X (0x8048000+0x1c70c) [0x806470c] [ 510.674] 21: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xf3) [0x497113] [ 510.674] 22: /usr/bin/X (0x8048000+0x1ca21) [0x8064a21] ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: xserver-xorg 1:7.6+7ubuntu7 ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6 Uname: Linux 3.0.0-13-generic i686 .tmp.unity.support.test.0: ApportVersion: 1.23-0ubuntu4 Architecture: i386 CompizPlugins: [core,bailer,detection,composite,opengl,decor,imgpng,resize,place,vpswitch,compiztoolbox,snap,session,move,unitymtgrabhandles,gnomecompat,mousepoll,grid,regex,wall,animation,expo,workarounds,ezoom,fade,scale,unityshell] CompositorRunning: None Date: Fri Nov 11 00:11:38 2011 DistUpgraded: Fresh install DistroCodename: oneiric DistroVariant: ubuntu DkmsStatus: vhba, 20110915, 3.0.0-13-generic, i686: installed GraphicsCard: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller]) Subsystem: COMPAL Electronics Inc Device [14c0:0012] Subsystem: COMPAL Electronics Inc Device [14c0:0012] InstallationMedia: Ubuntu 11.10 Oneiric Ocelot - Release i386 (20111012) MachineType: Motion Computing LE1700 PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcEnviron: PATH=(custom, no user) LANG=de_DE.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-13-generic root=UUID=b2599725-ac0a-458f-9046-562b15e1b076 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/28/2009 dmi.bios.vendor: Motion Computing - LE1700 dmi.bios.version: A.18 dmi.board.name: IDX80 dmi.board.vendor: MOTION dmi.board.version: Null dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: MOTION dmi.chassis.version: N/A dmi.modalias: dmi:bvnMotionComputing-LE1700:bvrA.18:bd08/28/2009:svnMotionComputing:pnLE1700:pvrA0:rvnMOTION:rnIDX80:rvrNull:cvnMOTION:ct10:cvrN/A: dmi.product.name: LE1700 dmi.product.version: A0 dmi.sys.vendor: Motion Computing version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu6 version.libdrm2: libdrm2 2.4.26-1ubuntu1 version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3 version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 oneiric ubuntu -- 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/08 Title: EQ overflowing. The server is probably stuck in an infinite loop. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/08/+subscriptions ___ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to :
[Ubuntu-x-swat] [Bug 888808] Re: EQ overflowing. The server is probably stuck in an infinite loop.
-- 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/08 Title: EQ overflowing. The server is probably stuck in an infinite loop. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/08/+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
[Ubuntu-x-swat] [Bug 484747] Re: xorg - high cpu load - only after first login
sorry - no. I got a new Laptop with a nvidia card. I installed the new LTS Ubuntu version and had not this problem any more. Thanks for support. -- xorg - high cpu load - only after first login https://bugs.launchpad.net/bugs/484747 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. ___ 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
[Ubuntu-x-swat] [Bug 484747] [NEW] xorg - high cpu load - only after first login
Public bug reported: Binary package hint: xorg after I reinstalled my System from Jaunty to Karmic Xorg takes a lot of CPU usage (~60-70% after login). top - 13:58:47 up 29 min, 2 users, load average: 1.81, 1.88, 1.62 Tasks: 193 total, 4 running, 189 sleeping, 0 stopped, 0 zombie Cpu(s): 37.3%us, 17.3%sy, 0.0%ni, 45.2%id, 0.0%wa, 0.0%hi, 0.2%si, 0.0%st Mem: 2061536k total, 997908k used, 1063628k free,93980k buffers Swap: 2931852k total,0k used, 2931852k free, 454540k cached PID USER PR NI VIRT RES SHR S %CPU %MEMTIME+ COMMAND 2017 root 20 0 665m 42m 15m S 59 2.1 17:09.88 Xorg When I logout and login it works normal. Need help to solve it. Thanks, Thomas ProblemType: Bug Architecture: i386 Date: Wed Nov 18 13:53:35 2009 DistroRelease: Ubuntu 9.10 InstallationMedia: Ubuntu 9.10 Karmic Koala - Release i386 (20091028.5) MachineType: MAXDATA PRO8100IWS Package: xorg 1:7.4+3ubuntu10 PccardctlIdent: Socket 0: no product info available Socket 1: product info: O2Micro, SmartCardBus Reader, V1.0, manfid: 0x, 0x0001 PccardctlStatus: Socket 0: no card Socket 1: 5.0V 16-bit PC Card Subdevice 0 (function 0) [unbound] ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-15-generic root=UUID=11cbcf4e-2daa-4f10-83bb-50eb4604c48e ro quiet splash usbcore.autosuspend=1 ProcEnviron: LANG=de_DE.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-15.50-generic RelatedPackageVersions: xserver-xorg 1:7.4+3ubuntu10 libgl1-mesa-glx 7.6.0-1ubuntu4 libdrm2 2.4.14-1ubuntu1 xserver-xorg-video-intel 2:2.9.0-1ubuntu2 xserver-xorg-video-ati 1:6.12.99+git20090929.7968e1fb-0ubuntu1 SourcePackage: xorg Uname: Linux 2.6.31-15-generic i686 XorgConf: Error: [Errno 2] No such file or directory: '/etc/X11/xorg.conf' XsessionErrors: (gnome-settings-daemon:2675): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed (gnome-settings-daemon:2675): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed (polkit-gnome-authentication-agent-1:2787): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed (nautilus:2771): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed (gnome-panel:2768): Gdk-WARNING **: /build/buildd/gtk+2.0-2.18.3/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window dmi.bios.date: 09/27/2006 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 080013 dmi.board.name: PRO8100IWS dmi.board.vendor: MAXDATA dmi.chassis.type: 10 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080013:bd09/27/2006:svnMAXDATA:pnPRO8100IWS:pvr:rvnMAXDATA:rnPRO8100IWS:rvr:cvn:ct10:cvr: dmi.product.name: PRO8100IWS dmi.sys.vendor: MAXDATA fglrx: Not loaded system: distro: Ubuntu architecture: i686kernel: 2.6.31-15-generic ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 -- xorg - high cpu load - only after first login https://bugs.launchpad.net/bugs/484747 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in ubuntu. ___ 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
[Ubuntu-x-swat] [Bug 484747] Re: xorg - high cpu load - only after first login
** Attachment added: BootDmesg.txt http://launchpadlibrarian.net/35822657/BootDmesg.txt ** Attachment added: CurrentDmesg.txt http://launchpadlibrarian.net/35822658/CurrentDmesg.txt ** Attachment added: Dependencies.txt http://launchpadlibrarian.net/35822659/Dependencies.txt ** Attachment added: Lspci.txt http://launchpadlibrarian.net/35822660/Lspci.txt ** Attachment added: Lsusb.txt http://launchpadlibrarian.net/35822661/Lsusb.txt ** Attachment added: PciDisplay.txt http://launchpadlibrarian.net/35822662/PciDisplay.txt ** Attachment added: ProcCpuinfo.txt http://launchpadlibrarian.net/35822663/ProcCpuinfo.txt ** Attachment added: ProcInterrupts.txt http://launchpadlibrarian.net/35822664/ProcInterrupts.txt ** Attachment added: ProcModules.txt http://launchpadlibrarian.net/35822665/ProcModules.txt ** Attachment added: UdevDb.txt http://launchpadlibrarian.net/35822666/UdevDb.txt ** Attachment added: UdevLog.txt http://launchpadlibrarian.net/35822667/UdevLog.txt ** Attachment added: XorgLog.txt http://launchpadlibrarian.net/35822668/XorgLog.txt ** Attachment added: XorgLogOld.txt http://launchpadlibrarian.net/35822669/XorgLogOld.txt ** Attachment added: Xrandr.txt http://launchpadlibrarian.net/35822670/Xrandr.txt ** Attachment added: glxinfo.txt http://launchpadlibrarian.net/35822671/glxinfo.txt ** Attachment added: setxkbmap.txt http://launchpadlibrarian.net/35822672/setxkbmap.txt ** Attachment added: xdpyinfo.txt http://launchpadlibrarian.net/35822673/xdpyinfo.txt ** Attachment added: xkbcomp.txt http://launchpadlibrarian.net/35822674/xkbcomp.txt -- xorg - high cpu load - only after first login https://bugs.launchpad.net/bugs/484747 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in ubuntu. ___ 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
