IRC chat logs for #ltsp on irc.freenode.net (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 ?
06:57
driver = mga
07:08
<ftherese>
yanu: did you install xinerama in the chroot?
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07:16
<yanu>
ftherese: probably not, buzzy installing
07:17
<ftherese>
how much experience do you have with ltsp?
07:17
yanu: have you ever installed something in the chroot before?
07:18
<yanu>
ftherese: ya sudo chroot /opt/ltsp/i386/ apt-get install ...
07:20
i suppose i have to enable xinerama in the config? in lts.conf of /etc/X11/xorg.conf
07:21
<ftherese>
do you have DIRECTX enabled?
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
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?
07:28
it installs but then what kind of error/problem are you having?
07:29
<yanu>
in the client, there is a matrox dualhead-agp-card PCI:1:0:0
07:29
i connected 2 monitors, they al more-or-less the same
07:29
so now i want to enable xinerama, so ik have one wide screen
07:30
there is no error, just on the 2 monitors, i see the same
07:30
the same session, move with the cursor -> same move on the 2 monitors
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?
07:40
<yanu>
xorg-mdg is installed, i checked 'apt-cache search xinerama' ...
07:40
<ftherese>
I unfortunately don't think I can be of much help... I haven't tried to use that feature...
07:40
are you using the ubuntu dist?
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
07:43
<yanu>
google isn't that helpfull ...
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
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..
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
14:08
=-O
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15:52
<Ahmuck_Sr>
alkisg:
15:52
<alkisg>
?
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15:55
<Ahmuck_Sr>
i've got access to my switch finally ...
15:55
i never thought connecting the dots would be so hard
15:55
anywho, so it appears there is flow control option, but it appears to be turned off
15:55
<alkisg>
Did you have to change your ip to "see" the switch?
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.
15:56
no, i changed the address of the server
15:56
<alkisg>
Yup that's what I meant
15:56
<Ahmuck_Sr>
then accessed it, and changed the server ip back
15:56
<alkisg>
So the server connects at 100mbps, not gigabit?
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
15:57
no, the server connects at 1000
15:57
but any client i plug in is 100
15:57
<alkisg>
Well, your clients have 100 mbps cards, right?
15:57
<Ahmuck_Sr>
yes
15:57
<alkisg>
So it's only natural that they connect at 100...
15:58
<Ahmuck_Sr>
so if flow control is off, what else am i missing?
15:58
<alkisg>
Can you do a test bench?
15:58
I.e. get some time when 10 clients are not in use, and try iperf on them
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
15:59
<Ahmuck_Sr>
i have only 5 clients right now. 4 working
16:00
but i can boot those up and try that
16:00
<alkisg>
It should be enough
16:00
You should be able to see something close to 400 mbps
16:00
<Ahmuck_Sr>
btw, ethtool -a eth1
16:00
<alkisg>
If you only see 100, then there's still a problem
16:00
<Ahmuck_Sr>
Pause parameters for eth1:
16:00
Autonegotiate: on
16:00
RX: on
16:00
TX: on
16:00
the switch did not have flow control on.
16:00
<alkisg>
That doesn't sound like your switch supports flow control :)
16:00
<Ahmuck_Sr>
well, it has a turn on/off option
16:01
and it was off by default
16:01
<alkisg>
Ahmuck_Sr: what nic is that? intel?
16:01
<Ahmuck_Sr>
i do have que mode, and "strict" or "wrr"
16:01
alkisg: let me check
16:02
<alkisg>
I've never seen a switch web interface, can't help you with that...
16:02
<Ahmuck_Sr>
01:0a.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 13)
16:02
<alkisg>
Hmmm it doesn't seem realtek based... can you try to change flow control from the server?
16:03
<Ahmuck_Sr>
strict services in sequential order, transmitting all higher priorty before lower priorty
16:03
wwr, is weighted, scheduling wiethgs for ques 1.4
16:03
<alkisg>
Ahmuck_Sr: maybe that's some kind of controls, but not *flow* control
16:03
(i.e. it doesn't have anything to do with pause signals)
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
16:04
<Ahmuck_Sr>
02:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6600] (rev a2)
16:04
i have two nics
16:04
they are both gigabyte nics
16:04
<alkisg>
Well, the one facing the clients...
16:05
isn't that eth1?
16:05
<Ahmuck_Sr>
yes
16:05
<alkisg>
ooops, so: sudo ethtool -A eth1 autoneg off rx off tx off
16:05
...and then to see if it had any effect: sudo ethtool -a
16:05
...eth1 :)
16:06
<Ahmuck_Sr>
*grr*
16:06
forgot to hook up the clients again
16:07
<alkisg>
The clients don't need to be turned on to run ethtool on the server...
16:07
<Ahmuck_Sr>
i thought you wanted me to start the clients?
16:07
<alkisg>
I don't think you disabled flow control from the switch, so, better do that from the server...
16:08
...so I was telling you to do this: https://help.ubuntu.com/community/UbuntuLTSP/FlowControl#Disabling%20flow%20control%20with%20ethtool
16:11
<Ahmuck_Sr>
yes, i'm looking at that doc
16:11
i double checked, flow control is turned off
16:11
by default
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
16:16
<alkisg>
cat /etc/network/interfaces - for the address, and cat /etc/ltsp/dhcpd.conf - for the ranges
16:17
...and sudo invoke-rc.d dhcp3-server restart
16:19
<Ahmuck_Sr>
ouch, i'm learning something
16:19
my brain hurts
16:20* alkisg is (unsuccesfully) trying to set up a dns server.. :(
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16:20
<Ahmuck_Sr>
oh, that's easy
16:21
anywho, looks like dhcp was stopped for some reason
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
16:22
<Ahmuck_Sr>
oh, nm
16:22
i never went that far
16:23
k, thin clients are started
16:23
<alkisg>
What, for the benchmark? You need to install iperf or netperf on the chroot, first...
16:24
<Ahmuck_Sr>
sudo ethtool -A eth1 autoneg off rx off tx off - samo thing
16:24
<alkisg>
Ahmuck_Sr: ok, let's do this step by step
16:25
<Ahmuck_Sr>
ok. ... sudo aptitude install chroot netperf
16:25
<alkisg>
1) Install iperf on the chroot and then run ltsp-update-image
16:25
Not quite
16:25
<Ahmuck_Sr>
let me google for ltsp chroot installtion
16:25
<alkisg>
sudo chroot /opts/ltsp/i386 apt-get install iperf
16:25
*without s
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 ?
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)
20:23
<vagrantc>
stgraber: heh.
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
20:30
<stgraber>
vagrantc: that's part of the Ubuntu packaging
20:30
vagrantc: as it's gnome specific (calls gnome-session-save) and uses icons that aren't there on some distro
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
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)
20:32
<vagrantc>
anyone can write to /tmp/ldm-logout-action ...
20:32
<stgraber>
my current goal is to have something rock solid by Friday, then upload a final ldm and ltsp in karmic
20:32
vagrantc: well, that's on the thin client, so it can only write by a call to ltsp-localapps
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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