IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 15 October 2010 (all times are UTC)
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| 04:55 | <zamba> anyone hear about itcan?
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| 04:55 | http://resources.adellgroup.net/itcan/
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| 04:56 | heard*
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| 07:44 | <shamino> ok, what am i doing wrong now.. i am trying to build kiosk-enviroment with command ltsp-build-client --chroot i386kiosk-new --kiosk and it builds normal desktop environment.
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| 07:58 | <tomak> Hi to everyone
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| 07:59 | does anyone use K12 Fedora ?
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| 08:38 | <CrypTom> Hi all, I've installed a kubuntu maverick server, installed the ltsp-server package (not standalone as we already have a dhcp server), i built the client, but when I boot the client, it always hangs
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| 08:39 | I changed /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default (I removed quiet and splash) and the client hangs after
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| 08:39 | * Starting LTSP client......
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| 08:39 | any ideas?
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| 08:40 | <CrypTom> after two minutes or so I get further lines telling me that "task lsb_release:xyz blocked for more than 120 seconds"
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| 08:41 | <CrypTom> a bit higher up, I see a line: "[ 38.359132] nbd0:Hangup"
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| 08:41 | <alkisg> Ugh, sounds like nbd-proxy...
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| 08:41 | https://bugs.launchpad.net/ltsp/+bug/589034
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| 08:41 | <CrypTom> and later "unknown partition table"
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| 08:42 | alkisg: ok, I'm reading, thanks
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| 08:44 | alkisg: I've got no file named /usr/share/initramfs-tools/scripts/ltsp_nbd
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| 08:44 | on the server
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| 08:44 | <alkisg> CrypTom: that's in the chroot
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| 08:44 | <CrypTom> ok
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| 08:45 | <alkisg> After you apply the patch, run sudo chroot /opt/ltsp/i386 update-initramfs -u && sudo ltsp-update-kernels
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| 08:45 | <mgariepy> just add the option nbd_proxy=false in /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
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| 08:45 | <alkisg> Ah my code is in maverick, right :D
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| 08:45 | <mgariepy> yeah :)
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| 08:45 | <alkisg> Forgot about that, still in 10.04... ;)
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| 08:45 | <ogra_ac> pfft so outdated
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| 08:45 | <alkisg> CrypTom: ^^^
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| 08:45 | ogra!!!
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| 08:46 | Long time no ...read
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| 08:46 | <ogra_ac> hey :)
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| 08:46 | <alkisg> How are your ARMs?
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| 08:46 | <ogra_ac> heavy :)
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| 08:46 | pandaboard.org is up ...
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| 08:46 | and i just registered an ltsp spec for UDS
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| 08:47 | (i hope i dont collide with anything stgraber was planning, i searched but couldnt find anything)
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| 08:47 | <mgariepy> alkisg, i'm currently trying to debug nbd-proxy, but with the debugging, it doesn't fall into the same raise condition, my thin client has been rebooting for like 12 hours successfully...
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| 08:47 | <CrypTom> ok thanks, so I'm not using the patch, just the nbd_proxy=false
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| 08:48 | <alkisg> CrypTom: right
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| 08:48 | mgariepy: yeah I know I haven't been able to reproduce that here either, but I've heard many teachers having the same problem so we completely disabled nbd_proxy in Greece so I don't have any feedback about it anymore...
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| 08:49 | <mgariepy> yeah
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| 08:49 | i know, in the office, we have like 20 or so thin client and on a mass reboot 2 of them failed to boot.
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| 08:49 | <alkisg> I've seen "negotiation errors", "squashfs errors" etc, all solved after removing nbd-proxy
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| 08:49 | <ogra_ac> alkisg, also http://ograblog.wordpress.com/2010/09/30/ubuntu-on-arm-the-best-since-sliced-bread/ :)
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| 08:50 | <alkisg> ogra_ac, any netbooks we can buy with ARM? Or is it only for thin clients / embedded stuff etc?
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| 08:50 | <mgariepy> with the version of nbd-proxy i have for debugging, it gives me like 800k of data per boot but doens't fail at all.
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| 08:50 | <alkisg> Oooh funky blog theme :P
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| 08:50 | <ogra_ac> alkisg, you can buy the ac100 and install ubuntu on it
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| 08:50 | <alkisg> mgariepy: try rsync -an /rofs /tmp after you boot a client
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| 08:50 | <ogra_ac> (thats what i'm typing on atm)
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| 08:50 | <alkisg> And check syslog for errors
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| 08:50 | (fat clients work better for this, bigger images)
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| 08:51 | -an ==> read but not write
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| 08:52 | <mgariepy> ok i see
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| 08:53 | doing it right now :)
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| 08:53 | <CrypTom> thanks, it worked!!!
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| 08:53 | <alkisg> mgariepy: also try re-enabling compression, I think it makes the problem more obvious (compression doesn't give problems to clients without nbd-proxy, in my experience, only to those with nbd-proxy)
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| 08:54 | CrypTom: if you please, report the nbd_proxy=false workaround for maverick+
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| 08:54 | (in the bug report)
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| 08:54 | <mgariepy> i don't use compression here.
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| 08:55 | <alkisg> mgariepy: yes, that makes problems *less* frequent, that's why I'm suggesting to reenable it...
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| 09:01 | <CrypTom> alkisg: done
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| 09:02 | <alkisg> nice :)
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| 09:07 | <CrypTom> bye, thanks!
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| 09:19 | <Uzzi> hi
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| 09:26 | <mgariepy> alkisg, ok i'm starting to tests with the compression on.
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| 09:28 | <alkisg> mgariepy: isn't it possible to send a patch to upstream nbd-client for whatever feature nbd-proxy adds to it?
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| 09:28 | I think the maintainer is very cooperable, he already implemented the "multiple roots" option we asked him...
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| 09:32 | <mgariepy> i will discuss that with julien an stgraber on monday, but anyway atm the code is not working relaibly enough
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| 09:34 | <alkisg> mgariepy: what's the main feature of nbd-proxy? Reconnect on disconnect? Multiple trasmits?
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| 09:34 | (i mean if the first transmission fails)
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| 09:35 | Or changing servers for ltsp-cluster?
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| 09:35 | * alkisg has no clue about what nbd-proxy actually does.. | |
| 09:35 | <mgariepy> nbd-proxy implement, reconnection on disconnect after several minutes, and put the FS in iowait when disconnected
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| 09:35 | ;)
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| 09:36 | <alkisg> Doesn't nbd-client -persist support the reconnection part?
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| 09:36 | <mgariepy> and resume transfert of fs access on reconnexion
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| 09:36 | no
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| 09:36 | not correctly
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| 09:36 | if you pkill the process it will reconnect
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| 09:36 | but if it take 20 second it will fail
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| 09:36 | <alkisg> OK, both sound like they would be welcomed upstream, as much as I can tell... at least with a --root-file-system switch or something like that
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| 09:37 | And maybe the developer there could help with any current issues nbd-proxy has
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| 09:38 | <mgariepy> and every file that is accessed on the thin client when disconnected will have a squashfs error and you need to clear the cache for those files.
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| 09:42 | we used nbd-proxy because nbd is a kernel module and the time would have been too long to have it upstream
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| 09:43 | <alkisg> Understandable, but now that there's no time pressure, it'd be good to have 1 tool for nbd connection instead of needing 2 of them
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| 09:43 | Better speed (no localhost transfers), lower memory usage, maybe even easier bug fixing because it would be 1 app instead of 2 etc...
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| 09:44 | <mgariepy> yeah but there is always time presure ;) we do not want to maintain a kernel module for 2 years
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| 09:46 | <alkisg> There is an nbd maintainer, you would just send a feature request / patch... imho...
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| 09:47 | Anyway, bye all :)
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| 09:55 | <Sorinan> Why an app like "VirtualBox Manager" running on server would crash only on one terminal, and not on all others? There's no difference in the config...
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| 11:04 | <alkisg> mgariepy: are the nbd-server/nbd-client in the same source tree as the nbd kernel module? I think they're separate, userland tools... http://nbd.git.sourceforge.net/git/gitweb.cgi?p=nbd/nbd;a=shortlog
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| 11:04 | So even if the nbd-server/client maintainer doesn't accept the reconnection patches (I don't see why he wouldn't), couldn't those be maintained as ubuntu specific patches in a debian/patch directory, for cpu / speed / memory / stability reasons, instead of maintaining a wrapper tool?
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| 11:06 | <alkisg> (another handy patch would be to have a named "swap" export, so that we could merge nbdswapd and nbdrootd and use the IANA assigned port for nbd-server)
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| 11:57 | <Kyle__> Ahh drat, alk just left.
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| 11:58 | Anyone here using NFS4 on fat clients?
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| 13:31 | <heru> anybody home....
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| 13:32 | i was wondering if anyone was familiar with a kernal panic issue on the Dell Optiplex 755 and 760
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| 13:33 | we are actually using 4.2 so forgice us
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| 13:37 | forgive us
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| 13:39 | <atkuepker> we run optiplex 2x0, but we're on Ubuntu w/ LTSP5.x
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| 13:44 | <johnny> heru, forgive is one thing.. but getting help for that is nearly impossible
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| 13:44 | few people around here have ever used ltsp 4.2
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| 13:44 | might wanna post on the mailing list instead
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| 13:45 | <heru> yeah i figured.... have you had any driver issues with the network card?
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| 13:45 | on the optiplex 755
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| 14:23 | <abeehc> still out of scope for this chan
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| 14:23 | not gonna guess the nic chipset; at the least it would make sense to post what lspci says
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| 14:25 | <Kyle__> heru: what type of kernel panaick? Can you give us a snippet of the log?
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| 14:26 | heru: I had an issue with my fat clients on optiplex gx620s.
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| 14:31 | <heru> okay
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| 14:32 | it posted that it could not determine the type of nic
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| 14:32 | it advises us to add the info "option-129" in the dhcpd.conf
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| 14:33 | <Kyle__> heru: Oh. Well if it can't find the type of nic, then it sounds more like a kernel/driver issue than anything else, but I'm not sure really.
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| 14:34 | <heru> that is what i thought.... so we need to determine the driver/chipset for this machine
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| 14:34 | <Kyle__> heru: what does lspci show you?
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| 14:39 | <Kyle__> Humm, it appears to have shown him the futility of his ways....
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| 14:41 | <abeehc> :\
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| 14:42 | <Kyle__> abeehc: You're right, it was out of scope, but still may have been fun to dig into/help fix.
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| 14:43 | * Kyle__ has a perverse sense of fun. | |
| 14:44 | * Gadi puts money on intel nic with e1000e driver that never existed back in LTSP 4.2 days | |
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| 14:45 | <Kyle__> Oooh.
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| 14:46 | I never had the money, or worked with places that would spend the money, for a good enough card to be on the unsupported list in the days 4.2 would have been used.
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| 14:48 | <Gadi> well, it wasn't an unsupported list - 4.2 had a niclist of what it could figure out on its own
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| 14:48 | <atkuepker> Kyle__, no kidding. back then, was happy to be able to buy $15 3com SOHO NICs and not make do with used NICs.
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| 14:49 | <Gadi> 4.2 was very minimal
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| 14:49 | it had a "niclist" in the initramfs that served as its lookup table
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| 14:49 | (4.2 predated udev by and large)
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| 14:49 | * Kyle__ still remembers being happy about finnaly getting rid of the last ISA nics he had to deal with. | |
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| 15:05 | <Kyle__> Is there an easy or at least streightforward way to enable an autologut/timeout for clients?
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| 15:08 | <johnny> read lts.conf manpage
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| 15:08 | <johnny> some variables there
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| 15:11 | <atkuepker> assuming you've installed the ltsp-docs package =)
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| 15:12 | <abeehc> i've not seen anything in lts.conf that will acheive that, Kyle__
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| 15:12 | sounds like it should be a function of gnome-session i dunno
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| 15:15 | <Kyle__> I must have missed them.
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| 15:19 | johnny: My version only lists some things abut an LDM timeout, to auto-login if no one has logged in yet.
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| 15:20 | <johnny> oh.. logout .. i think alkisg had something for that
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| 15:20 | i only saw "autolog" hah
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| 15:21 | <rad4christ> Hey guys, hope I can get a really quick bit of help
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| 15:21 | <Kyle__> Well, honestly I have two logout issues. one I need something that will stop/kill a session that's gone on too long, and two, I need it to run a specific script as part of the logout (to cleanly shutdown a running virtualbox session(.
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| 15:22 | <rad4christ> I have 10.10 installed iwth an LTSP server, all is working, except I've installed Firefox and flash locally. when I try to run it, I get an error that Firefox is already running
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| 15:22 | And BTW stgraber, very awesome work on this!
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| 15:24 | <Kyle__> rad4christ: Well is the same user already running firefox on a different station? Either that, or firefox crashed leaving aroudn it's lock file.
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| 15:24 | <rad4christ> Kyle__: this is the first the users have been logged in.
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| 15:24 | And each station (2 at the moment) are under different logons
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| 15:25 | <Kyle__> rad4christ: If (big if), there is nothing important in that users firefox config, blow it away, and re-run firefox. See how it goes.
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| 15:25 | <rad4christ> IT's a test box, I'm looking to roll it tonight, so there's no info I'm worried to lose.
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| 15:25 | <Kyle__> rad4christ: If your users will be logging into multiple sessions at once, know that this could be an issue. google-chrome has a --temp-profile option, which is useful for simultanious login issues.
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| 15:26 | rad4christ: test box? Then rm -rf ~/.mozilla and try and launch it again :)
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| 15:26 | <Gadi> Kyle__: autologout would be up to the desktop environment to handle - so, I would have a look into gnome, if that is what you use
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| 15:26 | <Kyle__> Gadi: OK, I'll dig through it.
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| 15:26 | Gadi: I'm not a huge fan of how gnome tries to take over the system, but I guess it makes sense in this one situation :)
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| 15:27 | <Gadi> hehe
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| 15:29 | <atkuepker> Kyle__, don't get me started on the whole black-box DBUS mess.
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| 15:29 | <rad4christ> Kyle__: Worked! Thanks!
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| 15:29 | <Kyle__> NP.
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| 15:29 | * Kyle__ hates dbus | |
| 15:29 | <rad4christ> Flash isn't working, though, doggonit.
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| 15:29 | * Kyle__ loves linux, and hates ubuntu& gnome...but ends up using them anyway. | |
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| 18:04 | <alkisg> Kyle__: for cleaning up after logout, see the xexit program that sbalneav made, it's much better than gnome-watchdog
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| 18:05 | (in his ppa)
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| 21:19 | <heru> peace Fam
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| 21:34 | <heru> has anyone had problems with network cards dropping configuration
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