[Ubuntu-x-swat] [Bug 460478] Re: X crash on start (Xubuntu)
I tested this bug on Lucid again: I changed /etc/X11/xorg.conf entries back to Option SWcursor false # [bool] Option HWcursor true # [bool] again. The bug doesn't occur anymore. Login worked always at the first attempt since then. -- Fix released. ** Changed in: xorg-server (Ubuntu) Status: Incomplete = Fix Released -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
[This is an automatic notification.] Hi Goatsly, This bug was reported against an earlier version of Ubuntu, can you test if it still occurs on Lucid? Please note we also provide technical support for older versions of Ubuntu, but not in the bug tracker. Instead, to raise the issue through normal support channels, please see: http://www.ubuntu.com/support If you are the original reporter and can still reproduce the issue on Lucid, please run the following command to refresh the report: apport-collect 460478 If you are not the original reporter, please file a new bug report, so we can work with you as the original reporter instead (you can reference bug 460478 in your report if you think it may be related): ubuntu-bug xorg If by chance you can no longer reproduce the issue on Lucid or if you feel it is no longer relevant, please mark the bug report 'Fix Released' or 'Invalid' as appropriate, at the following URL: https://bugs.launchpad.net/ubuntu/+bug/460478 ** Changed in: xorg-server (Ubuntu) Status: New = Incomplete ** Tags added: needs-retested-on-lucid-by-june -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
** Tags added: xubuntu -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
Same problem. Xorg SEGV upon xfce login from GDM after upgrade from 9.04 to 9.10. Setting SWcursor to true as indicated in earlier posts prevents the crash. Xorg.log and backtrace attached. xorg-server 2:1.6.4-2ubuntu4.1 -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
** Attachment added: gdb-Xorg.txt http://launchpadlibrarian.net/39784338/gdb-Xorg.txt -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
** Attachment added: Xorg.0.log.old http://launchpadlibrarian.net/39784410/Xorg.0.log.old -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
** Changed in: xorg-server (Ubuntu) Status: Incomplete = New -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
I experienced the same problem: Fatal IO error 104 (Connection reset by peer) on X server intermittently on Ubuntu 9.10 32-bit running as a guest machine on VMware 7.0.1, w/tools 8.1.4 build-227600. Adding: Section Device Option HWcursor false Option SWcursor true Driver vmware . . . EndSection , to /etc/X11/xorg.conf corrected the problem. I generated the base xorg.conf with Xorg -configure. The problem, in this case anyway, isn't specific to Nvidia cards. -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
I have the same problem as the original submitter. I am running Mythbuntu 9.10 (with xfce4) and have gdm setup to login automatically. Unfortunately, the login fails with the Fatal IO error 104 (Connection reset by peer) on X server messages in .xsession-errors. If I then retry the login a few times, the login will eventually succeed and everything seems to be working as it should. After a successful login, there are no Fatal IO error messages in .xsession-errors. After an unsuccessful attempt, I also found the following in Xorg.0.log: (II) intel(0): EDID for output TV1 (II) intel(0): Allocate new frame buffer 1024x768 stride 1024 Backtrace: 0: /usr/bin/X(xorg_backtrace+0x3b) [0x8133d6b] 1: /usr/bin/X(xf86SigHandler+0x55) [0x80c7d35] 2: [0xfcf400] 3: /usr/bin/X [0x81132c6] 4: /usr/bin/X [0x8123a62] 5: /usr/bin/X [0x80f99f0] 6: /usr/bin/X [0x80f74ee] 7: /usr/bin/X(RRScreenSizeSet+0x6c) [0x816848c] 8: /usr/bin/X(ProcRRSetScreenConfig+0x472) [0x8168c32] 9: /usr/bin/X [0x8160cd5] 10: /usr/bin/X(Dispatch+0x35f) [0x808d17f] 11: /usr/bin/X(main+0x395) [0x8072515] 12: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe6) [0x1d5b56] 13: /usr/bin/X [0x80719c1] Saw signal 11. Server aborting. (II) Power Button: Close I have attached the complete Xorg.0.log. This is on a Mac Mini with intel graphics, which means that the problem is not specific to nvidia. Please let me know if you need any more info. ** Attachment added: Xorg.0.log.old http://launchpadlibrarian.net/38336840/Xorg.0.log.old -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
Are you all using nvidia chips? Does disabling HWcursor help for all? ** Changed in: xorg-server (Ubuntu) Status: New = Incomplete -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
Hmm, I've never had any issues with logging in. All my problems seem to stem from not using the machine for long periods of time ( 24 hours). I came in this morning to find the machines display to be non responsive, I was able to SSH in an attempted to restart gdm (didn't work), my .xsession-errors file came back with: /etc/gdm/Xsession: Beginning session setup... Setting IM through im-switch for locale=en_US. Start IM through /etc/X11/xinit/xinput.d/all_ALL linked to /etc/X11/xinit/xinput.d/default. /usr/bin/startxfce4: X server already running on display :0 ** (gnome-screensaver:1445): WARNING **: Failed to get session presence proxy: Could not get owner of name 'org.gnome.SessionManager': no such nam e xfdesktop[1467]: starting up (xfce4-mixer-plugin:1487): libxfce4mixer-CRITICAL **: xfce_mixer_get_track: assertion `GST_IS_MIXER (card)' failed (xfce4-mixer-plugin:1487): xfce4-mixer-plugin-CRITICAL **: xfce_mixer_plugin_set_card: assertion `GST_IS_MIXER (card)' failed (xfce4-mixer-plugin:1487): xfce4-mixer-plugin-CRITICAL **: xfce_mixer_plugin_set_track: assertion `GST_IS_MIXER_TRACK (track)' failed (polkit-gnome-authentication-agent-1:1507): GLib-GObject-WARNING **: cannot register existing type `_PolkitError' (polkit-gnome-authentication-agent-1:1507): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed ** (nm-applet:1516): DEBUG: foo_client_state_changed_cb (xfce4-terminal:1532): Terminal-WARNING **: Unable to load terminal preferences. ** (update-notifier:1525): DEBUG: error during dbus call: The name org.debian.apt was not provided by any .service files (polkit-gnome-authentication-agent-1:1507): polkit-gnome-1-WARNING **: Error enumerating temporary authorizations: Remote Exception invoking org.f reedesktop.PolicyKit1.Authority.EnumerateTemporaryAuthorizations() on /org/freedesktop/PolicyKit1/Authority at name org.freedesktop.PolicyKit1: or g.freedesktop.PolicyKit1.Error.Failed: Cannot determine session the caller is in # more Xorg.1.log X.Org X Server 1.6.4 Release Date: 2009-9-27 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.24-23-server i686 Ubuntu Current Operating System: Linux DW 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 Kernel command line: root=UUID=94fd330e-962d-4b52-bb50-9c82653a6c10 ro quiet splash Build Date: 26 October 2009 05:15:02PM xorg-server 2:1.6.4-2ubuntu4 (buildd@) Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: /var/log/Xorg.1.log, Time: Mon Nov 23 09:49:21 2009 (==) Using config file: /etc/X11/xorg.conf (==) No Layout section. Using the first Screen section. (**) |--Screen Default Screen (0) (**) | |--Monitor Configured Monitor (**) | |--Device Configured Video Device (==) Automatically adding devices (==) Automatically enabling devices (WW) The directory /usr/share/fonts/X11/cyrillic does not exist. Entry deleted from font path. (==) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/100dpi/:unscaled, /usr/share/fonts/X11/75dpi/:unscaled, /usr/share/fonts/X11/Type1, /usr/share/fonts/X11/100dpi, /usr/share/fonts/X11/75dpi, /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, built-ins (==) ModulePath set to /usr/lib/xorg/modules (II) Cannot locate a core pointer device. (II) Cannot locate a core keyboard device. (II) The server relies on HAL to provide the list of input devices. If no devices become available, reconfigure HAL or disable AllowEmptyInput. (II) Loader magic: 0x3bc0 (II) Module ABI versions: X.Org ANSI C Emulation: 0.4 X.Org Video Driver: 5.0 X.Org XInput driver : 4.0 X.Org Server Extension : 2.0 (II) Loader running on linux (--) using VT number 9 -- This is getting quite annoying to say the least. -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
root# ps -aux | grep xfde Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html user 1467 0.0 0.5 66716 6152 ?Sl Nov18 0:06 xfdesktop --sm-client-id 2ce751412-e723-494a-9660-c4bb73614894 --display :0.0 root# xfdesktop --quit (xfdesktop:3700): Gtk-WARNING **: cannot open display: root# gdb xfdesktop GNU gdb (GDB) 7.0-ubuntu Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type show copying and show warranty for details. This GDB was configured as i486-linux-gnu. For bug reporting instructions, please see: http://www.gnu.org/software/gdb/bugs/... Reading symbols from /usr/bin/xfdesktop...(no debugging symbols found)...done. (gdb) run Starting program: /usr/bin/xfdesktop [Thread debugging using libthread_db enabled] (xfdesktop:3718): Gtk-WARNING **: cannot open display: Program exited with code 01. --- root@:/var/log/gdm# more :0.log Fatal server error: Server is already active for display 0 If this server is no longer running, remove /tmp/.X0-lock and start again. Please consult the The X.Org Foundation support at http://wiki.x.org for help. (WW) xf86CloseConsole: KDSETMODE failed: Bad file descriptor (WW) xf86CloseConsole: VT_GETMODE failed: Bad file descriptor (WW) xf86OpenConsole: VT_GETSTATE failed: Bad file descriptor ddxSigGiveUp: Closing log root@:/var/log/gdm# rm /tmp/.X0-lock root@:/var/log/gdm# gdm restart ** (gdm-binary:3819): WARNING **: Failed to acquire org.gnome.DisplayManager ** (gdm-binary:3819): WARNING **: Could not acquire name; bailing out --- root@:/var/log/gdm# rm -rf /tmp/.X1 .X11-unix/ .X1-lock root@:/var/log/gdm# more :1.log X.Org X Server 1.6.4 Release Date: 2009-9-27 X Protocol Version 11, Revision 0 Build Operating System: Linux 2.6.24-23-server i686 Ubuntu Current Operating System: Linux DW 2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 Kernel command line: root=UUID=94fd330e-962d-4b52-bb50-9c82653a6c10 ro quiet splash Build Date: 26 October 2009 05:15:02PM xorg-server 2:1.6.4-2ubuntu4 (buildd@) Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: /var/log/Xorg.1.log, Time: Mon Nov 23 09:49:21 2009 (==) Using config file: /etc/X11/xorg.conf (==) No Layout section. Using the first Screen section. (**) |--Screen Default Screen (0) (**) | |--Monitor Configured Monitor (**) | |--Device Configured Video Device (==) Automatically adding devices (==) Automatically enabling devices (WW) The directory /usr/share/fonts/X11/cyrillic does not exist. Entry deleted from font path. (==) FontPath set to: /usr/share/fonts/X11/misc, /usr/share/fonts/X11/100dpi/:unscaled, /usr/share/fonts/X11/75dpi/:unscaled, /usr/share/fonts/X11/Type1, /usr/share/fonts/X11/100dpi, /usr/share/fonts/X11/75dpi, /var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType, built-ins (==) ModulePath set to /usr/lib/xorg/modules (II) Cannot locate a core pointer device. (II) Cannot locate a core keyboard device. (II) The server relies on HAL to provide the list of input devices. If no devices become available, reconfigure HAL or disable AllowEmptyInput. (--) using VT number 9 root@:/var/log/gdm# ps -aux | grep xfce Warning: bad ps syntax, perhaps a bogus '-'? See http://procps.sf.net/faq.html user 1401 0.0 0.0 1748 368 ?Ss Nov18 0:00 /bin/sh /etc/xdg/xfce4/xinitrc -- /etc/X11/xinit/xserverrc user 1433 0.0 0.0 4916 220 ?Ss Nov18 0:00 /usr/bin/ssh-agent /usr/bin/dbus-launch --exit-with-session startxfce4 user 1436 0.0 0.0 3380 388 ?SNov18 0:00 /usr/bin/dbus-launch --exit-with-session startxfce4 user 1449 0.0 0.3 26120 3408 ?Sl Nov18 0:01 /usr/bin/xfce4-session user 1466 0.0 0.5 29972 5736 ?SNov18 0:14 xfce4-panel --sm-client-id 2c39297a4-60fc-4b69-9587-a3156e2ac2f2 user 1470 0.0 0.2 17156 2552 ?Ss Nov18 0:00 xfce4-power-manager --restart --sm-client-id 20cd5cca8-6ef9-47bc-ab43-64ea16d714b8 user 1476 0.0 0.2 18928 2936 ?SNov18 0:01 xfce4-settings-helper --display :0.0 --sm-client-id 268cff098-2c18-49bc-b3b1-436c08a4177d user 1477 0.0 0.5 39072 5588 ?Sl Nov18 0:01 /usr/lib/xfce4/panel-plugins/xfce4-menu-plugin socket_id 33554485 name xfce4-menu id 1 display_name Xfce Menu size 24 screen_position 13 user 1478 0.0 0.3 30028 3516 ?S
[Ubuntu-x-swat] [Bug 460478] Re: X crash on start (Xubuntu)
Since in the backtrace there was something about cursor, I tried editing xorg.conf and changed the following in Device Section: Option SWcursor true Option HWcursor false Now login always works on the first attempt. -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
I run into same issue. I was never able to log in through GUI. Log in through text console was fine. I had to delete all content from ~/.cache/sessions to be able to log through GUI again -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
I think I uploaded the wrong Xorg.0.log file. Here is the one I believe has the information you are looking for. Apologies. ** Attachment added: Xorg.0.log.old http://launchpadlibrarian.net/35501277/Xorg.0.log.old -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
I'm also having this problem with the release version of Xubuntu 9.10. I must say that I upgraded from 9.04 -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
I have this problem if I select any other resolution than 800x600. I have Xubuntu 9.10 as a fresh install in VMware Fusion 3 (it was the same in 2). -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
I just saw that there's a ?? when calling nv_drv.so in the backtrace. But there's no *-dbg package for xserver-xorg-video-nv. If it's of any relevance, could you please point me to some information how to get debug symbols for this driver? -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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 460478] Re: X crash on start (Xubuntu)
** Attachment added: gdb-Xorg.txt http://launchpadlibrarian.net/34502476/gdb-Xorg.txt ** Changed in: xorg-server (Ubuntu) Status: Incomplete = New -- X crash on start (Xubuntu) https://bugs.launchpad.net/bugs/460478 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server 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
