IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 5 July 2011 (all times are UTC)
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| 12:53 | <mgariepy> good morning everyone
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| 12:53 | <muppis> I'm not sure about that good part. :)
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| 12:54 | <rileyp> http://pastebin.com/RYw1jzQp dmesg output my diskless client has problems after a suspend Im using mythbuntu disklesss
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| 12:55 | it resumes to a gui but nothing after that works except the mouse...
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| 12:59 | <muppis> rileyp, mouse is handled locally runnign X and everything else is tried load over non-existing connection.
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| 12:59 | When system suspends all network connections will die and that's resuming fails.
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| 12:59 | +why
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| 13:00 | <Hyperbyte> You can't suspend thin clients, can you? They loose their nbd mount?
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| 13:00 | Yeah
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| 13:00 | Spoke too soon. =)
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| 13:03 | <rileyp> so is there a wway of fixing it or is that the bottom line no suspemd
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| 13:06 | <muppis> I can't say it is easy, but can be possbile by re-establishing nbd connection right after eth link is up but before nbd requests any data. So it would easier not to try suspend at all.
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| 13:09 | <rileyp> so if i were to create a script in /etc/pm/sleep.d/ that could delay nbd requests until eth0 is up I would be on course
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| 13:10 | <muppis> Yes. Not just eth0, but nbd socket also.
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| 13:10 | <rileyp> or would it need to be in the heart of operations ( the place I know nothing about....)
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| 13:11 | so the woe starts here 102.865729] nbd0: Attempted send on closed socket
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| 13:12 | <muppis> Yes.
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| 13:12 | <rileyp> thing is line before in fstab says eht0 is up
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| 13:13 | <Hyperbyte> You know, if nbd doesn't time out, your ssh will
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| 13:13 | <rileyp> how do i go about getting nbd back up?
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| 13:13 | <Hyperbyte> You'd need to keep both nbd and ssh active.
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| 13:14 | <muppis> I think ssh can easier re-establish.
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| 13:14 | <Hyperbyte> nbd you could restore, but then all your open file handles would be null, which probably still cause your system to hang
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| 13:14 | ssh you could also restore, but all your open programs etc will be gone
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| 13:14 | Or am I completely off here?
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| 13:15 | <rileyp> I dont care if I loose all my sessions i'd just love teh 15 second resume time
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| 13:15 | <Hyperbyte> Well then just killall X in your sleep.d script?
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| 13:15 | And resume nbd, yeah.
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| 13:16 | <rileyp> Im happy to do that but how will that help and how do I resume nbd i really appreciate you help
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| 13:17 | <Hyperbyte> Well I'm not sure that you can, actually
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| 13:17 | See, the whole root filesystem is mounted via nbd
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| 13:17 | <rileyp> ssh wont run after a resume unless I have it running when I suspend as the rogram is on the harddrive on teh server not in ram...
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| 13:17 | <Hyperbyte> If nbd is gone, / is gone. So no command whatsoever, would work.
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| 13:19 | <Hyperbyte> And all open file handles of all software would be null... I doubt your system could recover from that, even if you somehow get nbd resumed.
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| 13:19 | Why do you want your thin client to suspend, though?
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| 13:19 | <rileyp> If I left ssh running and then used ssh to get nbd back.....
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| 13:20 | <Hyperbyte> SSH can't be running in suspend. Also, if a command won't work on a local prompt, it certainly won't work via SSH.
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| 13:20 | <rileyp> dmesg works on a prompt
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| 13:21 | <Hyperbyte> Really? That's interesting. What if you ls / ?
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| 13:21 | <rileyp> after a suspend and I am able to save items to my overlay dir after a suspend
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| 13:21 | <Hyperbyte> Can you browse the root filesystem?
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| 13:22 | <rileyp> no nothing that good
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| 13:23 | I ran mousepad prior to suspending and after the resume I ran dmesg and cut and paste into mousepad and saved it. into the overlay home folder
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| 13:24 | i also ran ifconfig and it worked and in a terminal was able to run nano as another instance was presenr
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| 13:24 | <Hyperbyte> How about mount?
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| 13:24 | <rileyp> present sorry
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| 13:24 | I have not tried mount but that ssound like a sweet idea doesnt it
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| 13:25 | you so clever I feel stupid
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| 13:25 | <muppis> Would nfs be easier than nbd to reconnect?
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| 13:25 | <Hyperbyte> <-- noob
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| 13:25 | <rileyp> um sudo does not work though... so I wont be mounting much
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| 13:27 | <rileyp> muppis I have no idea Im happy to do what needs doing
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| 13:27 | <Hyperbyte> rileyp, well, any sleep.d script you put the mount command in would be executed as root, so that's not a problem.
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| 13:28 | <rileyp> yes good point
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| 13:29 | <rileyp> so the file to mount would be /opt/ltsp/i386.img would it?
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| 13:31 | <Hyperbyte> I have no idea how to mount nbd images
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| 13:31 | <rileyp> hmm nor do I
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| 13:32 | <muppis> bd-client server-ip server-port# filename/filesystem
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| 13:32 | Paste-error, missing n at start.
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| 13:33 | <rileyp> /etc/exports on my server has /var/cache/mythbuntu-diskless/overlay/ 192.168.1.0/25(rw,no_root_squash,async,no_subtree_check)
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| 13:33 | but that is nfs
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| 13:34 | <rileyp> thanks muppis so for me that would be 192.168.1.10 2000 /opt/ltsp/i386.img would that be right
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| 13:35 | <muppis> nbd-client just creates local block device, so it must be mounted to get used.
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| 13:35 | rileyp, yes.
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| 13:35 | <rileyp> is there a : between ip and port?
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| 13:35 | <muppis> Nope.
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| 13:35 | <rileyp> space ok that sound great
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| 13:36 | do I need anything after like defaults 1 2 etc
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| 13:37 | so in my sleep.d script it would be mount 192.168.1.10 2000 /opt/ltsp/i386.img
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| 13:38 | dont I need a fs as well as the image
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| 13:38 | <muppis> First use nbd-client to get that image as local block device and then mount that one.
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| 13:38 | http://www.thegeekstuff.com/2009/02/nbd-tutorial-network-block-device-jumpstart-guide/
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| 13:39 | <Hyperbyte> muppis, hey that's cool. I never knew nbd worked like that. I thought it just mounted the image directly
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| 13:41 | <muppis> Well, doesn't name say it? Network Block Device.
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| 13:41 | I think it can be anything what it is handled as block device.
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| 13:45 | <rileyp> I have run dkpg reconfigure ndb-server on 192.168.1.10 which is my server and have added /opt/ltsp/i386.img on port 2000 but when looking at your link it appears I need to do more than that on the server side. Unless I am mistaken
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| 13:47 | <Hyperbyte> muppis, yeah, I just never knew nbd = network block device. :-)
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| 13:47 | Actually you don't need to do anything on the server side, you need to make changes in /opt/ltsp/i386
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| 13:47 | <muppis> rileyp, I think you're mistaken, as you need only do reconnecting and remounting.
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| 13:48 | But yes, to make changes permanent, you need to do them to chroot and rebuild image.
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| 13:49 | <rileyp> Perform the following steps in the client machine, where you like to access the remote storage device. 1. Install nbd-client If this is a prgram I would ned to get it somehow as it wont be there on resume
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| 13:49 | <muppis> nbd-client should be there already.
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| 13:49 | <rileyp> Im cool with updating of teh client image stuff that bit is fine
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| 13:50 | <Hyperbyte> muppis, you sure? Isn't nbd-client lost with the nbd device?
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| 13:50 | <muppis> Hyperbyte, good point.
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| 13:50 | <Hyperbyte> Could be still there though, if it's in memory somehow.
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| 13:51 | I was already surprised the 'dmesg' command still works.
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| 13:51 | It's worth investigating if nbd-client works. If it doesn't, you could put it in /tmp/ before suspend, as a possible solution maybe. Not sure if it needs libraries or anything.
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| 13:52 | <muppis> If nbd-proxy is used, then nbd-client command could be triggered before suspend, so it get loaded to client before shutdown.
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| 13:52 | <Hyperbyte> Either way, I still say it's a hundred times easier to just leave the machine on.
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| 13:52 | <rileyp> ok so if ndb client is already there I create script in sleep.d to be acted on straight after network is up
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| 13:53 | <Hyperbyte> rileyp, that's a good start, yes.
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| 13:53 | <rileyp> other option is to resume and run an sleep.d scripts taht tells machine to reboot thus fixing all problems
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| 13:54 | <Hyperbyte> rileyp, that's your choice. :)
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| 13:54 | <muppis> rileyp, little bit looses purpose of suspend, if machine is rebooted instead of real resume.
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| 13:55 | <rileyp> sorry runs a command in sleep.d script that tells machine to reboot after the resume .
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| 13:56 | yes I know muppis but in honesty Im usinga projector and it teakes 45 seconds to fire up anyway and I could use the sleep.d reboot call to wake teh projector and amp at the same time
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| 13:56 | <Hyperbyte> rileyp, why are you suspending this machine anyway?
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| 13:57 | <rileyp> so mrs rileyp doesnt harp about wasting electricity
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| 13:57 | waf
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| 13:57 | <muppis> rileyp, I see the point.
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| 13:58 | <rileyp> its a hard one to explain but very common
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| 13:58 | <Hyperbyte> Why not just shutdown?
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| 13:58 | <rileyp> speaking of waf I best hit the hay
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| 13:59 | <Hyperbyte> And make some call during bootup to start the projector and amp?
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| 13:59 | <muppis> Hyperbyte, starting machine doesn't wake up the projector.
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| 13:59 | <rileyp> Hyperbyte: remote wont wake a cold machine
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| 13:59 | usb wake only work from suspend
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| 13:59 | <Hyperbyte> rileyp, ah :/
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| 13:59 | rileyp, you could possibly configure BIOS to power up on keypress
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| 14:00 | <muppis> And during projector warmup time machine itself can be easily rebooted.
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| 14:00 | <Hyperbyte> But else wake project & amp & reboot from sleep.d is good plan, yeah.
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| 14:00 | <rileyp> I have ir blasters on projector and amp so i hit remote and everything starts
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| 14:01 | <rileyp> hmm but in other room wher tv is and other front end suspend would be sweet
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| 14:01 | with no disk
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| 14:01 | and 15 second resume
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| 14:03 | <muppis> I had once in my mind to make chroot as local, so nbd would not be used at all. That could help in suspend problem.
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| 14:03 | <rileyp> Thanks fellas I've got to go to bed. Muppis yes with 4 gig of ram I could just put the image in ram?
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| 14:04 | <muppis> rileyp, yes, but you need to get it loaded to client somehow.
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| 14:05 | <rileyp> I have to go... thanks again
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| 14:05 | <muppis> No problem.
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| 14:07 | <muppis> This converstaion gives me an idea how manage locally loaded client so wlan can be used as connection.
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| 14:07 | <Hyperbyte> :o
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| 14:09 | <muppis> As I was lazy when moved to this house and didn't wire it up so I used wlan links, but 54g are terribly slow to start client.
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| 14:09 | s/are/is/s
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| 14:10 | And 150n ain't that better..
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| 14:16 | And I've made HTPC using LTSP and it works fine, when gets started up corretly.
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| 14:46 | <TheMatrix3000> anyone here using iTalc?
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| 14:46 | I am having issues seting it up
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| 14:59 | <andygraybeal> are you in ubuntu?
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| 14:59 | alkisg says sometimes it works and sometimes it doesn't
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| 15:00 | it's getting old and i guess isn't being updated
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| 15:00 | i'm using it with ubuntu 10.04 and it is working
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| 15:00 | he says that 10.04 or not it still sometimes doesn't workl
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| 15:00 | <TheMatrix3000> yes, im on ubuntu 11.04
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| 15:18 | <pmatulis> should arm-based clients work fine with the latest ltsp?
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| 15:57 | <TheMatrix3000> yea, i can't get italc working
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| 15:57 | something with the authentication keys
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| 16:01 | <Roasted> italc has always given me issues too, actually
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| 16:01 | on both windows and linux. :(
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| 16:03 | <andygraybeal> TheMatrix3000, aah authentication keys is a prob for me to -- you have to be logged in as an admin
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| 16:03 | auth keys don't work when i'm logged in as my normal user account
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| 16:04 | well, this is in my case, i should say. ymmv
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| 16:05 | <TheMatrix3000> i am in a sudo account
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| 16:06 | i can just install it on teh server and not have it installed on the client chmod right
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| 16:06 | <andygraybeal> yea, i use my sudo accuont and it works
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| 16:06 | <TheMatrix3000> chroot*
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| 16:06 | <andygraybeal> TheMatrix3000, i don't think you install it on the chroot, correct.
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| 16:06 | <TheMatrix3000> ok
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| 16:06 | let me retry then
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| 16:07 | <andygraybeal> don't take my word for any of this bro, i'm very very clueless.
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| 16:56 | <tl1000s77> is anyone here having issues with java apps on ltsp clients?
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| 17:11 | <Hyperbyte> !ask
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| 17:11 | <ltsp> Hyperbyte: ask: Don't ask to ask a question! Simply ask the question, and wait for someone to answer you. Most people active in the channel are very busy during the day, but stick around and eventually someone will be around to help you..
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| 17:11 | <Hyperbyte> For starts, define 'issues'.
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| 17:22 | <andygraybeal> TheMatrix3000, how is it going man.. did you get that crap to work?
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| 18:44 | <tl1000s77> Hi everyone
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| 19:37 | <pmatulis> tl1000s77: hi
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| 19:40 | <tl1000s77> pmatulis: hello
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| 19:41 | pmatulis: have you ever had any issues running java applications in a ltsp environment?
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| 19:42 | <pmatulis> tl1000s77: what kind of app are you using?
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| 19:43 | <tl1000s77> pmatulis: it's a web based app that's giving me issues. I don't know if it's Firefox that's the problem or java
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| 19:43 | <pmatulis> tl1000s77: what kind of java are you using on the client (which would be the ltsp server)?
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| 19:43 | tl1000s77: openjdk or sun java?
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| 19:44 | tl1000s77: testing both would be something to try
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| 19:44 | tl1000s77: you could also try using a different browser, like chromium-browser
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| 19:45 | tl1000s77: and the app itself should be logging somewhere as well, did you look?
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| 19:46 | <tl1000s77> pmatulis: That's the thing...I can't find where it's logging to
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| 19:46 | pmatulis: I'm pretty sure it's openjdk
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| 19:47 | <pmatulis> tl1000s77: dpkg -l '*jdk*'
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| 19:52 | <alkisg> Has anyone seen that? http://packages.debian.org/wheezy/xnbd-client
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| 19:53 | "Network Block Device client with support for live migration" , better performance etc
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| 19:55 | It also has a proxy mode
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| 19:57 | <vagrantc> alkisg: yeah, was wondering how well it works
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| 19:58 | <alkisg> I wonder why they needed to fork though
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| 19:58 | " (basic) snapshot support" => and also what that means
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| 20:00 | --recovery-command-reboot => that was also asked by some people here, to reboot hanged clients
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| 20:01 | And maybe --recovery-command could help with the reconnection
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| 20:04 | <Roasted> What's up guys? I see that in 11.04 LTSP using Ubuntu has two folders in ldm and themes. It seems to be using the "LTSP" folder instead of "Ubuntu". How can I default it to use the other? I like that login theme more.
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| 20:05 | <vagrantc> sudo ltsp-chroot update-alternatives --config ldm-theme
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| 20:05 | er, ubuntu doesn't have ltsp-chroot yet ...
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| 20:05 | sudo chroot /opt/ltsp/i386 update-alternatives --config ldm-theme
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| 20:05 | <alkisg> It's inside some /usr/share dir...
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| 20:06 | <Roasted> opt/ltsp/i386/usr/share/ldm/themes
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| 20:06 | within "themes" is ubuntu and ltsp
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| 20:06 | <vagrantc> or even easier ...
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| 20:06 | <Roasted> its using ltsp yet I want to use ubuntu :P
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| 20:06 | <vagrantc> LDM_THEME=Ubuntu in lts.conf
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| 20:06 | i forgot about that option
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| 20:06 | <Roasted> oh nice
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| 20:06 | thanks for that
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| 20:07 | <vagrantc> though that's odd that it wouldn't default to the other theme
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| 20:07 | <Roasted> it looks like lts.conf exists by default in 11.04 now
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| 20:07 | it didn't before
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| 20:08 | and ldm_theme is already in lts.conf, but its entry is "edubuntu"
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| 20:08 | I changed it to ubuntu, we'll see if that's the fix
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| 20:08 | alkisg, I did a presentation on how we're using linux at work at a tech college a few weeks ago. LTSP was a hot item on the list.
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| 20:09 | I scanned through their school-issued Ubuntu book and sure enough, LTSP was in there with several developers names. Yours caught my eye due to your nick here.
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| 20:09 | <alkisg> LTSP has a default lts.conf? Where, in /var/lib/tftpboot/ltsp/i386? Can you pastebin it?
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| 20:09 | :)
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| 20:09 | <Roasted> its from the 11.04 edubuntu installer. I didn't have this in 10.10 edubuntu
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| 20:09 | but sure, I can, give me one moment
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| 20:10 | alkisg, http://tinypaste.com/2f5387
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| 20:10 | except the default was edubuntu instead of ubuntu. that was my only alteration.
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| 20:10 | this is, otherwise, a brand new vanilla install.
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| 20:11 | <alkisg> ...where's the close button on that ad? :D
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| 20:11 | <Roasted> on what ad?
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| 20:11 | <alkisg> Hehe tinypaste randomly decides to pop up ads
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| 20:11 | <Roasted> ah
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| 20:11 | yeah I had it too
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| 20:12 | <alkisg> And my screen didn't have enough height to show the close button
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| 20:12 | So I had to close the whole page + reopen it :D
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| 20:12 | <Roasted> can you see it now?
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| 20:12 | <alkisg> Yes, but you just put that LDM_THEME there, didn't you?
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| 20:12 | So it only had comments by default?
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| 20:12 | <Roasted> I did not.
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| 20:12 | It was LDM_THEME=edubuntu
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| 20:12 | <alkisg> Ah, I see
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| 20:12 | <Roasted> I just removed "ed" and updated the chroot
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| 20:12 | rebooted, and its using the LDM theme I want.
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| 20:13 | the default LTSP theme is the blue thing with yellow text.
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| 20:13 | <alkisg> You don't need to reboot when you change lts.conf
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| 20:13 | And you can probably just remove LDM_THEME completely
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| 20:13 | <Roasted> I know. I just rebooted the client.
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| 20:13 | after updating the chroot.
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| 20:13 | <alkisg> *eeerh I mean you don't have to update the chroot. ok
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| 20:13 | <Roasted> ahh, wasn't aware of that. thanks :)
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| 20:13 | <alkisg> Also it's strange that the edubuntu theme was missing
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| 20:14 | (and you got the default LTSP theme instead)
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| 20:14 | <Roasted> I assume it's due to the LDM theme being named "ubuntu" and the LDM_THEME entry was "edubuntu"
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| 20:14 | no?
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| 20:14 | <alkisg> Did you run ltsp-build-client manually after the installation?
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| 20:14 | <Roasted> yes. ltsp-build-client --arch i386
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| 20:14 | <alkisg> Right, that's what hapenned then
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| 20:14 | <Roasted> oops...
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| 20:14 | <alkisg> Edubuntu created a chroot for you
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| 20:15 | You deleted it and created a new one, but kept the edubuntu lts.conf
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| 20:15 | <Roasted> alkisg, stop being a genius.
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| 20:15 | <alkisg> So in your new chroot you didn't have the edubuntu theme
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| 20:15 | <Roasted> like, for real.
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| 20:15 | <alkisg> (I imagine, I haven't seen an edubuntu chroot recently)
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| 20:15 | <Roasted> but yeah I did an rm -rf of it
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| 20:15 | of the old chroot
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| 20:15 | then I built a new one
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| 20:16 | oh boy. my chroot has unity.
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| 20:30 | <Roasted> I'm reading bug reports that it was fixed in 11.04 where the clients use the same default desktop environment as the server. Would the latest 11.04 on edubuntu's site not be updated for some reason?
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| 20:35 | <Roasted> could always drop to 10.04 and use an LTS too, where unity wont be found till the dust clears more
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