Comments on: Enabling XDMCP on Karmic Koala (Pt. I) http://www.peppertop.com/blog/?p=690 Things I love, things I hate, and things I just don't understand Mon, 06 Sep 2010 21:21:09 +0000 hourly 1 http://wordpress.org/?v=3.0.1 By: Chris http://www.peppertop.com/blog/?p=690&cpage=1#comment-9299 Chris Tue, 25 May 2010 13:47:35 +0000 http://www.peppertop.com/blog/?p=690#comment-9299 Thank god!! saved me after a year of figuring out why i had to restart gdm to connect to my box every time. DisplaysPerHost=2 Thank god!! saved me after a year of figuring out why i had to restart gdm to connect to my box every time.

DisplaysPerHost=2

]]> By: Oliver Smith http://www.peppertop.com/blog/?p=690&cpage=1#comment-9286 Oliver Smith Mon, 26 Apr 2010 10:38:40 +0000 http://www.peppertop.com/blog/?p=690#comment-9286 ARGH! I'm trying to get this working in 10.4. I repeated the steps, gksudo gdm restart, and voila it worked. I wanted to change XMing from Window to Fullscreen mode, so I restarted XLaunch ... and no greeter. So I restarted GDM and XLaunch. No greeter. I restarted the Ubuntu machine and XLaunch. No greeter. *$@*$&$*! However - I do appear to have found a likely cause. netstat -an | grep 177 shows only an ipv6 listener. ARGH. I'm trying to figure out how to coerce GDM into listening for IPv4 also. ARGH! I’m trying to get this working in 10.4. I repeated the steps, gksudo gdm restart, and voila it worked. I wanted to change XMing from Window to Fullscreen mode, so I restarted XLaunch … and no greeter. So I restarted GDM and XLaunch. No greeter. I restarted the Ubuntu machine and XLaunch. No greeter.

*$@*$&$*!

However – I do appear to have found a likely cause.

netstat -an | grep 177 shows only an ipv6 listener. ARGH.

I’m trying to figure out how to coerce GDM into listening for IPv4 also.

]]> By: Mark http://www.peppertop.com/blog/?p=690&cpage=1#comment-9231 Mark Thu, 08 Apr 2010 13:38:32 +0000 http://www.peppertop.com/blog/?p=690#comment-9231 I recommended creating custom.conf as it won't (well, shouldn't) be affected by any future updates, whereas gdm.schemas might be - but thanks for the info, as it's always useful to provide more options to other readers. I recommended creating custom.conf as it won’t (well, shouldn’t) be affected by any future updates, whereas gdm.schemas might be – but thanks for the info, as it’s always useful to provide more options to other readers.

]]> By: Holden http://www.peppertop.com/blog/?p=690&cpage=1#comment-9211 Holden Wed, 07 Apr 2010 03:53:24 +0000 http://www.peppertop.com/blog/?p=690#comment-9211 In Ubuntu 9.10, I just needed to edit /etc/gdm/gdm.schemas and set the following entries: ------------------------------------- <key>security/DisallowTCP</key> <signature>b</signature> <default>false</default> <key>xdmcp/Enable</key> <signature>b</signature> <default>true</default> --------------------------------------------- I did not need to add a custom.conf but if you do it will work as well. Running GDM on OpenVZ was another matter as the new GDM has not implemented the --no-console option that is required for headless setups (like for OpenVZ clients). A patch to GDM, however, is available from: https://bugzilla.gnome.org/show_bug.cgi?id=567522 HH In Ubuntu 9.10, I just needed to edit /etc/gdm/gdm.schemas and set the following entries:
————————————-

<key>security/DisallowTCP</key>
<signature>b</signature>
<default>false</default>

<key>xdmcp/Enable</key>
<signature>b</signature>
<default>true</default>

———————————————

I did not need to add a custom.conf but if you do it will work as well.

Running GDM on OpenVZ was another matter as the new GDM has not implemented the –no-console option that is required for headless setups (like for OpenVZ clients). A patch to GDM, however, is available from: https://bugzilla.gnome.org/show_bug.cgi?id=567522

HH

]]> By: Jim Jackson http://www.peppertop.com/blog/?p=690&cpage=1#comment-8946 Jim Jackson Sat, 20 Mar 2010 19:46:17 +0000 http://www.peppertop.com/blog/?p=690#comment-8946 I see they've removed the --no-console option from gdm for Karmic! I have a headless AMD64 box in the cellar which I sometimes use for development work. I previously had no Xserver configured, and ran gdm with the --no-console option so it wouldn't attempt to start one. Can't do that now. Anybody tried xdm ? For most things I'm ok with ssh and x-forwarding etc, but it's a cool demo to have a full session running in an xnest on my desktop. I see they’ve removed the –no-console option from gdm for Karmic! I have a headless AMD64 box in the cellar
which I sometimes use for development work. I previously had no Xserver configured, and ran gdm with the –no-console option so it wouldn’t attempt to start one. Can’t do that now. Anybody tried xdm ?

For most things I’m ok with ssh and x-forwarding etc,
but it’s a cool demo to have a full session running in an xnest on my desktop.

]]> By: links for 2010-03-15 « Wild Webmink http://www.peppertop.com/blog/?p=690&cpage=1#comment-8800 links for 2010-03-15 « Wild Webmink Mon, 15 Mar 2010 12:09:19 +0000 http://www.peppertop.com/blog/?p=690#comment-8800 [...] Enabling XDMCP on Karmic Koala Seems Ubuntu developers are protecting me from myself by removing all mention of XDMCP from the GUI. These instructions explain how to turn on XDMCP again without the benefit of a Security tab on the Login Preferences dialog. (tags: Ubuntu How-to Remote Desktop) [...] [...] Enabling XDMCP on Karmic Koala Seems Ubuntu developers are protecting me from myself by removing all mention of XDMCP from the GUI. These instructions explain how to turn on XDMCP again without the benefit of a Security tab on the Login Preferences dialog. (tags: Ubuntu How-to Remote Desktop) [...]

]]> By: Mark http://www.peppertop.com/blog/?p=690&cpage=1#comment-8737 Mark Mon, 22 Feb 2010 16:59:13 +0000 http://www.peppertop.com/blog/?p=690#comment-8737 If you mean that you want to access your local storage devices from within the remote session, then this amounts to the same issue as accessing them from the server itself. If you just need to access the files on the storage then using something like <a href="http://fuse.sourceforge.net/sshfs.html" rel="nofollow">sshfs</a> might do the trick - or even just using ssh/scp to copy the files to the server and back as needed. If you're accessing a recent GNOME desktop on the server (e.g. a recent Ubuntu installation), then I've found the "Connect to server..." option in the Places menu works well for this, and even makes the mounted location available to the command line via the .gvfs directory. If, however, you want to access the underlying block device itself - to (un)mount the CD-ROM drive or USB stick on the server's desktop, for example - you might need to look into something like the <a href="http://nbd.sourceforge.net/" rel="nofollow">Network Block Device</a> driver. I've never had cause to use it myself, though, so I don't know whether or not that will suit your requirements. If you mean that you want to access your local storage devices from within the remote session, then this amounts to the same issue as accessing them from the server itself. If you just need to access the files on the storage then using something like sshfs might do the trick – or even just using ssh/scp to copy the files to the server and back as needed. If you’re accessing a recent GNOME desktop on the server (e.g. a recent Ubuntu installation), then I’ve found the “Connect to server…” option in the Places menu works well for this, and even makes the mounted location available to the command line via the .gvfs directory.

If, however, you want to access the underlying block device itself – to (un)mount the CD-ROM drive or USB stick on the server’s desktop, for example – you might need to look into something like the Network Block Device driver. I’ve never had cause to use it myself, though, so I don’t know whether or not that will suit your requirements.

]]> By: Kjetil Fleten http://www.peppertop.com/blog/?p=690&cpage=1#comment-8716 Kjetil Fleten Fri, 19 Feb 2010 21:50:47 +0000 http://www.peppertop.com/blog/?p=690#comment-8716 Is there any way to make a remote x-session to a server and still have access to local cdrom device and usb memory sticks etc on the client ? Is there any way to make a remote x-session to a server and still have access to local cdrom device and usb memory sticks etc on the client ?

]]> By: theodore http://www.peppertop.com/blog/?p=690&cpage=1#comment-8688 theodore Fri, 05 Feb 2010 23:40:25 +0000 http://www.peppertop.com/blog/?p=690#comment-8688 Thanks. It does seem that they screw with Ubuntu with every release. I especially don't like the way that bash handles 'set -o vi' differently in each version. Thanks.

It does seem that they screw with Ubuntu with every release. I especially don’t like the way that bash handles ‘set -o vi’ differently in each version.

]]> By: » XDMCP support in Ubuntu: make your voice heard My Green Life http://www.peppertop.com/blog/?p=690&cpage=1#comment-8668 » XDMCP support in Ubuntu: make your voice heard My Green Life Mon, 01 Feb 2010 15:14:27 +0000 http://www.peppertop.com/blog/?p=690#comment-8668 [...] As I’ve pointed out previously, the XDMCP support has been severely crippled in Ubuntu 9.10, Karmic Koala. I suspect that XDMCP is something that isn’t considered a very high priority by the Ubuntu and upstream developers, as it’s an old protocol with security issues. Up until Karmic, however, it had the distinct advantage of being already installed (even on a Live CD) and easy to activate and access via the GUI. [...] [...] As I’ve pointed out previously, the XDMCP support has been severely crippled in Ubuntu 9.10, Karmic Koala. I suspect that XDMCP is something that isn’t considered a very high priority by the Ubuntu and upstream developers, as it’s an old protocol with security issues. Up until Karmic, however, it had the distinct advantage of being already installed (even on a Live CD) and easy to activate and access via the GUI. [...]

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