I enabled debugging on GDM and got the following results in the syslog when trying to lock the session using the original and modified LDM scripts:
Results when logged in using the old LDM script: Jun 27 22:53:52 anthony-laptop gdm[4741]: gdm_socket_handler: Accepting new connection fd 8 Jun 27 22:53:52 anthony-laptop gdm[4741]: Handling user message: 'VERSION' Jun 27 22:53:52 anthony-laptop gdm[4741]: Handling user message: 'AUTH_LOCAL 8bab402dc278302e7985cafb4299ff1f' Jun 27 22:53:52 anthony-laptop gdm[4741]: close_if_needed: Got G_IO_HUP on 8 Jun 27 22:53:52 anthony-laptop gdm[4741]: close_if_needed: Got error on 8 Results when logged in using the new LDM script: Jun 28 09:43:07 acal2 gdm[4741]: gdm_socket_handler: Accepting new connection fd 8 Jun 28 09:43:07 acal2 gdm[4741]: Handling user message: 'VERSION' Jun 28 09:43:07 acal2 gdm[4741]: close_if_needed: Got G_IO_HUP on 8 Jun 28 09:43:07 acal2 gdm[4741]: close_if_needed: Got error on 8 The only difference is the omission of AUTH_LOCAL parameter which is why I believe I get the authentication error in my .xsession-errors log file. Does this have to do with a malformed .Xauthority file? Why would my session now not be able to authenticate with GDM? ----- Original Message ---- From: Anthony M Simonelli <[EMAIL PROTECTED]> To: ltsp-discuss@lists.sourceforge.net Sent: Monday, June 25, 2007 9:44:39 PM Subject: Re: [Ltsp-discuss] LTSP 5/code to bypass encryption of X That makes sense, and is probably related to the last problem I'm experiencing. Before I was able to lock the session by clicking the log out button and selecting 'Lock Screen'. Now I get a message pop up window saying: "Error while running command ** Message: Screensaver is not running!" When I look at my .xsession-errors file, I find the following message: "** (gnome-session:14557): WARNING **: Failed to authenticate with GDM" The log out option works fine, but I get that .xsession-error entry every time I click on the log out button (that's the event that triggers it) and I get the pop up window above every time I click Lock Screen (which tries to start gnome-screensaver but can't because it fails to authenticate with GDM). Is it related to not proxying X through ssh? Is there a workaround I can try? On Mon, 2007-06-25 at 10:34 -0400, Gideon Romm wrote: > Anthony- > > ssh is still used as a communication tunnel between client and server. > For example, it is used to launch the session, set up sound, trigger > mounting of local devices, that sort of thing. The only difference is > that you are not proxying the ssh traffic through ssh, so you eliminate > the overhead of encrypting the video data (the majority of the ssh > overhead in the secure scenario) and, more importantly for performance, > you are not proxying the X traffic, but rather directly talking between > the applications and the xserver. > > Cheers, > > -Gadi > > On Sun, 2007-06-24 at 22:12 -0500, Anthony M Simonelli wrote: > > I apologize. I tried it again, this time with a fresh setup, and > > everything worked perfectly. I must have setup things incorrectly on > > the first attempt because your modified LDM script works beautifully. > > > > I am curious, is it just X that's no longer being encrypted over ssh > > with the new LDM_DIRECTX option or is the entire terminal session no > > longer using ssh, because I noticed that sshd is still a running > > process. > > > > On Fri, 2007-06-22 at 17:19 -0400, Gideon Romm wrote: > > > Anthony, > > > > > > In LTSP5, gdm is not used at all. You need not enable XDMCP in gdm or > > > even have gdm installed on the server. If enabling it changed things, > > > that must mean you have SCREEN_07=startx in your lts.conf. Don't do > > > that. Take it out. Use ldm. Then, you localdev and everything else > > > should work. > > > > > > -Gadi > > > > > > On Thu, 2007-06-21 at 21:53 -0500, Anthony M Simonelli wrote: > > > > I gave this version of LDM a whirl and was pleasantly surprised. It > > > > does boot quicker and, after configuring GDM for remote logins, I was > > > > quickly presented with a login screen. Sound still works, but I notice > > > > that the USE_XFS and LOCALDEV options in the lts.conf file do not have > > > > an effect. Local devices aren't critical, but I need access to the XFS > > > > server since we use IBM's iSeries Access that requires un/scalable > > > > fonts. > > > > > > > > Am I doing something wrong? > > > > > > > > On Wed, 2007-06-20 at 09:34 -0500, Jim Kronebusch wrote: > > > > > Hello all, I met with Gideon Romm at our North Central Linux > > > > > Symposium. He has been > > > > > working on modifications to the code for ldm to allow the bypass of X > > > > > being encrypted > > > > > over ssh. He has also added functionality to be able to use > > > > > autologin. You can > > > > > download the modified ldm from here: > > > > > > > > > > http://codebrowse.launchpad.net/~gideon/ltsp/gadi-ldm-mods-ltsp/download/gadi%40ltsp.org-20070521205254-ek710bofdpdtlwlz/x_Matt_Zimmerman_%3Cmatt.zimmerman%40canonical.com%3E_Tue_Jun__7_19%3A59%3A49_2005_32192.0/ldm > > > > > > > > > > Replace your current "/opt/ltsp/i386/usr/sbin/ldm" with the new file > > > > > (you may want to > > > > > backup your current ldm just to be safe). The in > > > > > "/opt/ltsp/i386/etc/lts.conf" add the > > > > > following line: > > > > > > > > > > LDM_DIRECTX=True > > > > > > > > > > You will now be able to run without X being encrypted, which in > > > > > theory should allow LTSP > > > > > 5 to run at the same speed as LTSP 4.2. Bootup times and logout > > > > > times will still be > > > > > slower, but once booted things should zoom along. So far my tests > > > > > show that this works > > > > > awesome! I am still waiting for my new clients to really give this a > > > > > go. > > > > > > > > > > If you would like to use autologin features you simply need to add > > > > > the following line to > > > > > lts.conf: > > > > > > > > > > LDM_USERNAME=hostname > > > > > > > > > > Apparently this lets you use the same user=workstation method that > > > > > worked in LTSP 4.2. > > > > > You will still need to setup ssh keys OR create the same password for > > > > > each user and > > > > > specify LDM_PASSWORD="mypassword" (in lts.conf). You also need to > > > > > specify workstation > > > > > names in dhcpd.conf so that workstations do not all have the same > > > > > hostname (I am not > > > > > sure if this is able to be done with the /etc/hosts file as well). > > > > > > > > > > Anyhow this hacked ldm should allow LTSP 5 to finally be usable in > > > > > larger installations > > > > > instead of hanging on to LTSP 4.2. Also I guess that Scott Balneaves > > > > > has rewritten some > > > > > of the python startup files in C, which should clear up some boot > > > > > time problems in the > > > > > next Gutsy release (Scott, sorry if I butchered up what exactly you > > > > > have been working on). > > > > > > > > > > Jim Kronebusch > > > > > Cotter Tech Department > > > > > 453-5188 > > > > > > > > > > > > > > > > > ------------------------------------------------------------------------- > > > > This SF.net email is sponsored by DB2 Express > > > > Download DB2 Express C - the FREE version of DB2 express and take > > > > control of your XML. No limits. Just data. Click to get it now. > > > > http://sourceforge.net/powerbar/db2/ > > > > _____________________________________________________________________ > > > > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > > > > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > > > > For additional LTSP help, try #ltsp channel on irc.freenode.net > > > -- > > > -------------------------------------------------------- > > > Gideon Romm | Proud LTSP Developer > > > [EMAIL PROTECTED] > > > > > > Support LTSP! Buy your hardware at: > > > > > > www.DisklessWorkstations.com > > > www.DisklessThinClients.com > > > > > > (use coupon code: LTSP5P for 5% off thin clients from > > > DisklessThinClients.com) > > > > > > > > > ------------------------------------------------------------------------- > > > This SF.net email is sponsored by DB2 Express > > > Download DB2 Express C - the FREE version of DB2 express and take > > > control of your XML. No limits. Just data. Click to get it now. > > > http://sourceforge.net/powerbar/db2/ > > > _____________________________________________________________________ > > > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > > > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > > > For additional LTSP help, try #ltsp channel on irc.freenode.net > > > > > > ------------------------------------------------------------------------- > > This SF.net email is sponsored by DB2 Express > > Download DB2 Express C - the FREE version of DB2 express and take > > control of your XML. No limits. Just data. Click to get it now. > > http://sourceforge.net/powerbar/db2/ > > _____________________________________________________________________ > > Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: > > https://lists.sourceforge.net/lists/listinfo/ltsp-discuss > > For additional LTSP help, try #ltsp channel on irc.freenode.net ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _____________________________________________________________________ Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto: https://lists.sourceforge.net/lists/listinfo/ltsp-discuss For additional LTSP help, try #ltsp channel on irc.freenode.net
