IRC chat logs for #ltsp on irc.libera.chat (webchat)
Channel log from 26 September 2009 (all times are UTC)
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| 06:57 | <yanu> how can i use xinerama on a client (debian) ? can it be done anyway ?
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| 06:57 | driver = mga
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| 07:08 | <ftherese> yanu: did you install xinerama in the chroot?
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| 07:16 | <yanu> ftherese: probably not, buzzy installing
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| 07:17 | <ftherese> how much experience do you have with ltsp?
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| 07:17 | yanu: have you ever installed something in the chroot before?
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| 07:18 | <yanu> ftherese: ya sudo chroot /opt/ltsp/i386/ apt-get install ...
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| 07:20 | i suppose i have to enable xinerama in the config? in lts.conf of /etc/X11/xorg.conf
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| 07:21 | <ftherese> do you have DIRECTX enabled?
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| 07:23 | <yanu> explain DIRECTX ? isn't that windowsstuff?
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| 07:26 | <yanu> ach ok, now i get that directx, no via ldm
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| 07:27 | <ftherese> that is probably unimportant I am thinking now
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| 07:28 | <ftherese> when you say "using xinerama" what do you mean exactly?
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| 07:28 | it installs but then what kind of error/problem are you having?
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| 07:29 | <yanu> in the client, there is a matrox dualhead-agp-card PCI:1:0:0
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| 07:29 | i connected 2 monitors, they al more-or-less the same
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| 07:29 | so now i want to enable xinerama, so ik have one wide screen
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| 07:30 | there is no error, just on the 2 monitors, i see the same
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| 07:30 | the same session, move with the cursor -> same move on the 2 monitors
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| 07:31 | so , it is the script that doesn't recognize the variables in lts.conf X_XINERAMA = Y
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| 07:33 | <yanu> X_SCREEN_POS_01 = RightOf Screen00 , XSERVER_00 = mga , XSERVER_01 = mga , X4_BUSID_00 = PCI:1:0:0 X4_BUSID_00 = PCI:1:0:0
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| 07:39 | <ftherese> have you checked that there isn't some little extra program that has to be installed in the chroot for it to work?
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| 07:40 | <yanu> xorg-mdg is installed, i checked 'apt-cache search xinerama' ...
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| 07:40 | <ftherese> I unfortunately don't think I can be of much help... I haven't tried to use that feature...
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| 07:40 | are you using the ubuntu dist?
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| 07:40 | <yanu> i did it once with ltsp4.2, a long long time ago
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| 07:41 | <ftherese> hmmm... yeah... I really don't think I'd be much help unless the problem had to do with printing or simpler stuff
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| 07:43 | <yanu> google isn't that helpfull ...
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| 07:44 | i doubt that it is even possible
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| 08:26 | <yanu> ok, xinerama works on the client with a selfmade xorg.conf file
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| 09:12 | <Kicer86> hi, when can i suppose ltsp for mandriva?
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| 11:01 | <wima1> since our upgrade to evolution 2.26, i noticed that evolution data server stays running after logoout. I saw that there is an open evolution bug for this, but is there an easy way to kill a users processes on logout qs q temporary workaround?
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| 11:18 | <Ahmuck_Sr> i'm having trouble finding my switch
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| 11:18 | i need to turn flow control off, but am having trouble nailing down the ip address so i can access the web interface
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| 12:05 | <Yaroze> I thought XDMCP would be fast, but as it turns out is just as slow as vnc/nx etc..
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| 12:06 | running quake via x11 ssh tunnel is faster, why cant xdmcp be that fast?
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| 12:16 | <Yaroze> you guys would not happen to have a suggestion?
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| 13:31 | <Ahmuck_Sr_> i'm unable to find my network switch on my network. i need to change flow control for ltsp to work correctly. any help would be appreciated
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| 14:06 | <alkisg> Ahmuck_Sr: I don't know about the switch, but you may also try to disable flow control from your server's nic
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| 14:08 | =-O
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| 15:52 | <Ahmuck_Sr> alkisg:
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| 15:52 | <alkisg> ?
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| 15:55 | <Ahmuck_Sr> i've got access to my switch finally ...
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| 15:55 | i never thought connecting the dots would be so hard
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| 15:55 | anywho, so it appears there is flow control option, but it appears to be turned off
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| 15:55 | <alkisg> Did you have to change your ip to "see" the switch?
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| 15:56 | <Ahmuck_Sr> however, there is "auto sense" and it is sensing 100. if i try to change it to 1000 it drops the connection.
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| 15:56 | no, i changed the address of the server
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| 15:56 | <alkisg> Yup that's what I meant
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| 15:56 | <Ahmuck_Sr> then accessed it, and changed the server ip back
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| 15:56 | <alkisg> So the server connects at 100mbps, not gigabit?
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| 15:57 | <Ahmuck_Sr> i did have a question about the server ip. the server is serving dhcp to all the clients. i assume that the dhcpd deamon has a range of ip address it uses set somewhere, or does it start with the address of the server for it's subnet
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| 15:57 | no, the server connects at 1000
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| 15:57 | but any client i plug in is 100
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| 15:57 | <alkisg> Well, your clients have 100 mbps cards, right?
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| 15:57 | <Ahmuck_Sr> yes
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| 15:57 | <alkisg> So it's only natural that they connect at 100...
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| 15:58 | <Ahmuck_Sr> so if flow control is off, what else am i missing?
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| 15:58 | <alkisg> Can you do a test bench?
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| 15:58 | I.e. get some time when 10 clients are not in use, and try iperf on them
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| 15:58 | (from a *local* terminal, not from a gnome-terminal)
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| 15:59 | <alkisg> When I tried it with 10 of my 100-mbps clients, I saw that the server actually sent data very close to 1 Gbps
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| 15:59 | <Ahmuck_Sr> i have only 5 clients right now. 4 working
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| 16:00 | but i can boot those up and try that
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| 16:00 | <alkisg> It should be enough
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| 16:00 | You should be able to see something close to 400 mbps
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| 16:00 | <Ahmuck_Sr> btw, ethtool -a eth1
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| 16:00 | <alkisg> If you only see 100, then there's still a problem
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| 16:00 | <Ahmuck_Sr> Pause parameters for eth1:
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| 16:00 | Autonegotiate: on
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| 16:00 | RX: on
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| 16:00 | TX: on
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| 16:00 | the switch did not have flow control on.
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| 16:00 | <alkisg> That doesn't sound like your switch supports flow control :)
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| 16:00 | <Ahmuck_Sr> well, it has a turn on/off option
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| 16:01 | and it was off by default
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| 16:01 | <alkisg> Ahmuck_Sr: what nic is that? intel?
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| 16:01 | <Ahmuck_Sr> i do have que mode, and "strict" or "wrr"
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| 16:01 | alkisg: let me check
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| 16:02 | <alkisg> I've never seen a switch web interface, can't help you with that...
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| 16:02 | <Ahmuck_Sr> 01:0a.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 13)
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| 16:02 | <alkisg> Hmmm it doesn't seem realtek based... can you try to change flow control from the server?
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| 16:03 | <Ahmuck_Sr> strict services in sequential order, transmitting all higher priorty before lower priorty
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| 16:03 | wwr, is weighted, scheduling wiethgs for ques 1.4
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| 16:03 | <alkisg> Ahmuck_Sr: maybe that's some kind of controls, but not *flow* control
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| 16:03 | (i.e. it doesn't have anything to do with pause signals)
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| 16:04 | Ahmuck_Sr: try this on the server - it may cut your connection momentarily: sudo ethtool -A eth0 autoneg off rx off tx off
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| 16:04 | <Ahmuck_Sr> 02:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6600] (rev a2)
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| 16:04 | i have two nics
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| 16:04 | they are both gigabyte nics
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| 16:04 | <alkisg> Well, the one facing the clients...
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| 16:05 | isn't that eth1?
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| 16:05 | <Ahmuck_Sr> yes
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| 16:05 | <alkisg> ooops, so: sudo ethtool -A eth1 autoneg off rx off tx off
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| 16:05 | ...and then to see if it had any effect: sudo ethtool -a
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| 16:05 | ...eth1 :)
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| 16:06 | <Ahmuck_Sr> *grr*
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| 16:06 | forgot to hook up the clients again
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| 16:07 | <alkisg> The clients don't need to be turned on to run ethtool on the server...
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| 16:07 | <Ahmuck_Sr> i thought you wanted me to start the clients?
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| 16:07 | <alkisg> I don't think you disabled flow control from the switch, so, better do that from the server...
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| 16:08 | ...so I was telling you to do this: https://help.ubuntu.com/community/UbuntuLTSP/FlowControl#Disabling%20flow%20control%20with%20ethtool
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| 16:11 | <Ahmuck_Sr> yes, i'm looking at that doc
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| 16:11 | i double checked, flow control is turned off
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| 16:11 | by default
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| 16:11 | now i have a bigger problem, for some reason my client's aren't booting
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| 16:15 | <Ahmuck_Sr> my clients are not connecting and getting an address. where is the dhcp address range set? i'm wondering if i changed the client side nic to the wrong ip address
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| 16:16 | <alkisg> cat /etc/network/interfaces - for the address, and cat /etc/ltsp/dhcpd.conf - for the ranges
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| 16:17 | ...and sudo invoke-rc.d dhcp3-server restart
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| 16:19 | <Ahmuck_Sr> ouch, i'm learning something
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| 16:19 | my brain hurts
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| 16:20 | * alkisg is (unsuccesfully) trying to set up a dns server.. :( | |
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| 16:20 | <Ahmuck_Sr> oh, that's easy
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| 16:21 | anywho, looks like dhcp was stopped for some reason
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| 16:21 | <alkisg> Really??!!! After `sudo apt-get install bind9` I can't declare zones, or do nsupdates... /me has a lot to learn about dns
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| 16:22 | <Ahmuck_Sr> oh, nm
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| 16:22 | i never went that far
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| 16:23 | k, thin clients are started
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| 16:23 | <alkisg> What, for the benchmark? You need to install iperf or netperf on the chroot, first...
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| 16:24 | <Ahmuck_Sr> sudo ethtool -A eth1 autoneg off rx off tx off - samo thing
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| 16:24 | <alkisg> Ahmuck_Sr: ok, let's do this step by step
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| 16:25 | <Ahmuck_Sr> ok. ... sudo aptitude install chroot netperf
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| 16:25 | <alkisg> 1) Install iperf on the chroot and then run ltsp-update-image
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| 16:25 | Not quite
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| 16:25 | <Ahmuck_Sr> let me google for ltsp chroot installtion
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| 16:25 | <alkisg> sudo chroot /opts/ltsp/i386 apt-get install iperf
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| 16:25 | *without s
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| 16:26 | *and if it fails you need to mount /proc...
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| 17:02 | <Ahmuck_Sr> https://help.ubuntu.com/community/UbuntuLTSP/UpdatingChroot - is this sequence required for a thin client upgrade everytime ?
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| 17:37 | <Ahmuck_Sr> so alkisg left, does anybody else konw how to do iperf profiling ?
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| 17:50 | bbt
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| 20:18 | <stgraber> yeah !! I finally have a working shutdown and reboot that doesn't break the application server (close the session cleanly)
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| 20:23 | <vagrantc> stgraber: heh.
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| 20:24 | stgraber: i saw you added the hook, but i didn't see what part of the code actually made use of the hook
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| 20:30 | <stgraber> vagrantc: that's part of the Ubuntu packaging
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| 20:30 | vagrantc: as it's gnome specific (calls gnome-session-save) and uses icons that aren't there on some distro
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| 20:31 | basically, that's two .desktop files writting shutdown or reboot in /tmp/ldm-logout-action using ltsp-localapps, then calling a session logout
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| 20:31 | on logout ldm will read that file and do the action in it. That way I was able to remove our previous hack (sudo rights to shutdown) and have something that won't break the user session (opened files and stuff like that)
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| 20:32 | <vagrantc> anyone can write to /tmp/ldm-logout-action ...
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| 20:32 | <stgraber> my current goal is to have something rock solid by Friday, then upload a final ldm and ltsp in karmic
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| 20:32 | vagrantc: well, that's on the thin client, so it can only write by a call to ltsp-localapps
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| 20:33 | vagrantc: and AFAIK multiple ldm session doesn't work so well, so it's usually a single user who's in front of the thin client that will do it
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