IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 19 December 2010 (all times are UTC)
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| 11:14 | <petre> good morning all
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| 11:14 | I've installed LTSP using Ubuntu 10.4's alternative install CD.
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| 11:16 | It was a bit of a bumpy ride in that the default settings didn't work because the dhcp points clients to /ltsp/i386.tmp, when the real path is /ltsp/i386 (no .tmp on the end)
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| 11:17 | Any ideas as to why that's set that way?
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| 11:18 | Further, I can now get a client to load a kernel and initrd and X appears to start as I get some sort of a background image, but I never see the greeter/login prompt.
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| 11:18 | Any suggestions of where to look to figure out what's failing?
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| 11:19 | <alkisg> petre: are you sure ltsp-build-client finished successfully? Maybe .tmp means that it didn't...
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| 11:19 | How big is the image? ls -lha /opt/ltsp/images/i386.img
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| 11:22 | <petre> alkisg, 497MB
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| 11:22 | 497389568 to be exact
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| 11:23 | <alkisg> I don't use a default chroot but yes it should be around that
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| 11:23 | What do you mean "a sort of a background image"?
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| 11:23 | The ubuntu splash screen?
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| 11:23 | That's the default ldm background, do you see that? http://www.stgraber.org/download/images/ldm.png
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| 11:25 | <petre> Yes, I get that background, but no ubuntu logo, no login box, no options or date or anything; just the white with the orange stripe on th left
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| 11:26 | and a mouse cursor
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| 11:26 | <alkisg> Hmmm can you try to update your chroot, to verify that all packages were installed ok?
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| 11:26 | sudo chroot /opt/ltsp/i386 apt-get update
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| 11:26 | sudo chroot /opt/ltsp/i386 apt-get dist-upgrade
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| 11:27 | If you see any prompt about broken packages, then that's the problem...
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| 11:28 | <petre> The first update just gave some messages about 'Failed to fetch cdrom'
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| 11:29 | but that's all.
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| 11:29 | <alkisg> Copy your sources.list from the server to the chroot, and try again:
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| 11:29 | sudo cp /etc/apt/sources.list /opt/ltsp/i386/etc/apt/sources.list
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| 11:29 | (keep a backup if you want)
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| 11:30 | (not needed though)
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| 11:30 | <petre> I'm waiting for the second command to complete.
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| 11:30 | <alkisg> ok
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| 11:30 | <petre> Then I'll copy the sources.list over.
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| 11:31 | I won't worry about backing up. This is new, dedicated machine to be used to train people on Ubuntu.
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| 11:32 | While I'm waiting, do client need at least 512MB of RAM?
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| 11:32 | What happens if one tries with just 256MB?
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| 11:32 | <alkisg> 256 is more than enough for thin clients
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| 11:32 | I have labs with 64MB
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| 11:33 | (that's the absolute minimum, though)
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| 11:33 | Is your network gigabit?
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| 11:33 | (and your clients etc?)
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| 11:35 | <petre> server is gbit, clients 100Mb. switch has gbit port for server, 100Mb for clients
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| 11:36 | <alkisg> Watch out for flow control problems then, they'll bring your whole network down to 100mbps: https://help.ubuntu.com/community/UbuntuLTSP/FlowControl
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| 11:37 | And here's a wiki page that describes chroot updating in more detail: https://help.ubuntu.com/community/UbuntuLTSP/UpdatingChroot
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| 11:38 | <petre> Reran update and this time no errors.
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| 11:38 | <alkisg> You also need to run sudo ltsp-update-kernels && sudo ltsp-update-image
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| 11:38 | <petre> Do I need to rebuild the image?
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| 11:38 | <alkisg> After all that, reboot your client
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| 11:39 | Not "build" in the ltsp-build-client sense, but "update", i.e. the 2 commands above
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| 11:39 | <petre> rebooted client, same thing: background image, nothing else
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| 11:39 | <alkisg> You didn't update the image
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| 11:39 | (07:39:31 PM) alkisg: You also need to run sudo ltsp-update-kernels && sudo ltsp-update-image
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| 11:40 | <petre> I've also got a P3 with 256 that loads the kernel but nothing else.
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| 11:40 | <alkisg> That may be a network module problem, leave that for later
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| 11:40 | <petre> It's probably worth mentioning that it's using a univeral ethrboot floppy.
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| 11:40 | <alkisg> Ah. Don't :)
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| 11:40 | <petre> ok, I'll put it aside for now.
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| 11:40 | <alkisg> !gpxe
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| 11:40 | <ltspbot> alkisg: "gpxe" :: the successor to etherboot (http://etherboot.org). To download bootable floppy, cd, usb, kernel etc images, visit http://rom-o-matic.net/
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| 11:41 | <alkisg> Use that one instead ^^
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| 11:41 | And specifically the 1.0.0 version, not the 1.0.1
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| 11:41 | <petre> Ah, yes, gpxe. Ok, will do
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| 11:41 | <alkisg> There are known problems with older boot disks that use the older etherboot versions, before the gpxe switch
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| 11:43 | Does that P3 have windows installed?
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| 11:44 | <petre> No, was used with an ltsp 4.2 server in the past.
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| 11:44 | <alkisg> OK
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| 11:49 | <petre> (putting p3 aside for the moment)
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| 11:49 | I'm checking the flow control
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| 11:50 | Switch is unmanaged.
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| 11:51 | The server will be hosting only about 6 clients and not doing anything heavy, mostly being used to give a tour of Ubuntu.
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| 11:51 | Anyway, I'm still stuck with no login.
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| 11:53 | Updating image
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| 11:53 | (already updated kernel)
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| 12:01 | <alkisg> E.g. watching a youtube video might need 80 mbps bandwidth, so disabling flow control on the server nic would be required for good performance
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| 12:01 | 80*6 = 480
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| 13:02 | <petre> had to step away for a bit
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| 13:02 | we won't be doing any youtube, so that shouldn't be a problem.
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| 13:03 | I updated the image, but still getting the same result on the client of just getting the login background but no login fields, options, date, etc.
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| 13:06 | <alkisg> petre: there's a possibility that your chroot is broken, so if you have a fast connection I'd suggest `sudo mv /opt/ltsp /opt/ltsp-possibly-bad && sudo ltsp-build-client`
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| 13:07 | If it still doesn't work after that, ok, troubleshooting will be in order
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| 13:09 | <petre> I'll start with the (re-)build
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| 14:29 | <petre> rebuilding the chroot made no difference; client displays only background for login screen.
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| 14:30 | I'm going to drop off for a few minutes: I want to reconnect the floppy drive in the server (which I'm on here) to make a gpxe floppy to try another client machine.
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| 15:11 | <petre> alkisg, good news! The P3 booting from the gpxe floppy works!
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| 15:11 | So, the problem with the client that just gets the background but no login prompts appears to be tied to that client.
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| 15:11 | It's a Dell laptop, fwiw.
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| 23:19 | <alkisg> petre: it's probably a driver problem then, try `sudo gedit /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default` and replacing "quiet splash" there with "nomodeset"
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