IRC chat logs for #ltsp on irc.freenode.net (webchat)


Channel log from 14 June 2016   (all times are UTC)

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07:50
<vlt>
Hello. For 10 years now we are using LTSP on Ubuntu. A few weeks ago – I think after another firefox update – users began to complain about the whole system being unbearably slow. Scrolling became a nightmare.
07:50
Then last week I switched the first users to a fresh Debian 8 install.
07:50
Happiness all around! It was incredibly fast.
07:50
But …
07:52
After only a few days I ran updates last weekend and something happened to the iceweasel packages: There’s now firefox and we experience the same slowness as on the Ubuntu systems.
07:52
Any idea what’s going on here?
07:55
<alkisg>
vlt: are you using thin or fat clients?
07:56
<vlt>
alkisg: I’m afraid I don’t know. I think THIN. Is it a “fat client” when programs like firefox are run locally?
07:56
<alkisg>
(or localapps)
07:56
Yes, it depends on where the cpu usage is, server or client
07:56
<vlt>
Thin then.
07:57
<alkisg>
What are your client specs, cpu/ram?
07:57
<vlt>
Low
07:57
<alkisg>
Like 256 RAM?
07:57
<vlt>
500–1000
07:57
<alkisg>
Can you be more specific, because you're in the limit between thins and fats
07:58
<vlt>
Did the firefox developers change something critically?
07:58
<alkisg>
I don't know about firefox in general
07:58
<vlt>
Some machines have 512 MB RAM, some 1024.
07:58
<alkisg>
I know about youtube, they're using html5 now
07:58
<vlt>
It the HP t5xxx series.
07:58
<alkisg>
Machines with 1024 might make better fat clients than thin
07:59
<vlt>
I wonder what exactly changed with the last update. It was a very well working system until last weekend.
08:00
<alkisg>
That would be a question for #firefox...
08:00
But if you downgrade firefox, everything's well again?
08:00
<vlt>
I’d have to try.
08:00* vlt has to find out how to downgrade
08:01
<alkisg>
apt policy firefox => shows you the available versions
08:01
apt install firefox=specific-version
08:02
So, for example, hp t510 has this cpu: http://www.cpubenchmark.net/cpu.php?cpu=VIA+Eden+X2+U4200+%40+1.0%2B+GHz
08:02
Which has a cpu score of 478
08:02
I wouldn't recommend to anyone to buy that as a fat client,
08:02
but nevertheless, it will still function much better as a fat client rather than a thin client
08:03
E.g. it won't be able to watch fullscreen youtube video or scroll windows seamlessly as a thin, but it will as fat
08:03
!ltsp-pnp
08:03
<ltsp>
ltsp-pnp: ltsp-pnp is an alternative (upstream) method to maintain LTSP installations for thin and fat clients that doesn't involve chroots: https://help.ubuntu.com/community/UbuntuLTSP/ltsp-pnp
08:04
<sebd>
Hello, vlt, I read somewhere the latest Firefox uses GTK 3 - the GTK3 libs might miss something to be efficient on your setup.
08:06
<vlt>
sebd: Thank you. That would be the critical change the firefox developers made.
08:07
Any idea how to get it working again?
08:09
<sebd>
vlt: apt-get install iceweasel=38.8.0esr-1~deb8u1
08:10
I wonder if apt-get will work out dependancies on its own
08:10
<alkisg>
As long as they're in the repositories, it does
08:10
<vlt>
sebd: Thanks, I’ll try that liek NOW.
08:20
sebd: It’s even still in /var/cache/apt/archives/ ;-D
08:32
sebd: The file there is called /var/cache/apt/archives/iceweasel_38.8.0esr-1~deb8u1_amd64.deb
08:32
Whould I use the _amd64 part as well?
08:32
*Should
08:40
<sebd>
vlt: I do not think you should
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08:44
<vlt>
sebd: Ok, it’s fast again.
08:45
l10n is missing.
08:45
How to install the corresponding iceweasel-l10n-de package?
08:45
sebd: Where did you get that version string from?
08:47
apt comnplains: "E: Version '38.8.0esr-1~deb8u1' for 'iceweasel-l10n-de' was not found"
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08:48
<TimKramer>
Hello
08:49
<alkisg>
Hello
08:49
<TimKramer>
can someone help me with modifying the lts.conf?
08:49
<alkisg>
!ask
08:49
<ltsp>
ask: Don't ask to ask a question, simply ask it, and if someone knows the answer, they'll respond. Please hang around for at least a full hour after asking a question, as not everybody constantly monitors the channel.
08:51
<alkisg>
TimKramer, just ask your question...
08:51
<TimKramer>
i want to boot thin clients, they should connect per rdesktop to my 2008 R2 windows server. But i have the problem that the lts.conf dont start rdesktop for the thin clients and i get only the ldm login screen
08:52
What can i do?
08:52
<alkisg>
!rdp
08:52
<ltsp>
I do not know about 'rdp', but I do know about these similar topics: 'RDP-localdev', 'freerdp', 'win8-rdp'
08:52
<TimKramer>
[default]
08:52
LDM_AUTOLOGIN = True
08:52
[00:0D:B9:25:59:E0]
08:52
LDM_USERNAME = ltsp233
08:52
LDM_PASSWORD = Dotz4u3r!
08:52
SCREEN_01 = startx
08:52
SCREEN_02 = ldm
08:52
SCREEN_04 = rdesktop
08:52
RDP_SERVER = 192.168.1.111
08:52
thats my lts.conf
08:52
<alkisg>
!freerdp
08:52
<ltsp>
freerdp: http://www.freerdp.com/ is a new RDP implementation which is more actively maintained than rdesktop. Newer LTSP versions support SCREEN_07=xfreerdp <params>.
08:52
<alkisg>
Try this:
08:52
SCREEN_04=xterm
08:53
Reboot the client, do you get an xterm on vt4?
08:53
Also, do you need both ldm and rdp, or just rdp?
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08:55
<TimKramer>
i just need rdp not more
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08:57
<alkisg>
So you don't need LDM_AUTOLOGIN, LDM_USERNAME, LDM_PASSWORD, SCREEN_01, SCREEN_02
08:57
Try with only this, as your lts.conf:
08:57
[Default]
08:57
SCREEN_07=xterm
08:58
Reboot the client, and if you get an xterm, try to manually use xfreerdp from there to connect to your server
08:58
When you've done that step, we can continue with the next one
08:58
<TimKramer>
the client is rebooting
08:58
pleasy wait a sec
09:00
i have modified the lts conf an rebooted the client but i see again the ldm screen :(
09:04
<alkisg>
That means that your client doesn't read lts.conf at all
09:04
<vlt>
TimKramer: Can you check if /etc/lts.conf on the client is the one you changed?
09:04
<alkisg>
It either has a syntax error, or it it's the wrong path, or dhcpd.conf is misconfigured
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09:06
<alkisg>
TimKramer: which distro/version are you using?
09:07
<TimKramer>
Im using debian 8 because i need for the clients a non pae kernel
09:07
<alkisg>
Is that jessie?
09:07
<TimKramer>
yes
09:08
<alkisg>
Are you using isc-dhcp-server, or e.g. dnsmasq or something else?
09:08
<TimKramer>
No im using our utm from sophos for dhcp
09:08
<alkisg>
And for tftp? tftpd-hpa?
09:09
<TimKramer>
tftp
09:09
<alkisg>
Which tftp server?
09:09
Your lts.conf should be in the tftp directory
09:09
Where is your lts.conf now?
09:10
<TimKramer>
@vlt: Im editing the lts.conf on the server on /opt/lib/ltsp/i386/lts.conf
09:10
<alkisg>
lib?!
09:10
<TimKramer>
tftp server was installed with the ltsp packet from the debium repo
09:10
alkisg just wait a sec i will control
09:11
<alkisg>
Your lts.conf should be in either /srv/tftp or /var/lib/tftpboot, depending on how you installed ltsp on debian
09:11
<TimKramer>
sry the directory for lts.con is on /var/lib/tftpboot/ltsp/i386/lts.conf
09:11
<sebd>
vlt: I looked into aptitude, because "apt policy" does not work in Debian 8.
09:11
<alkisg>
sebd: apt-cache policy in jessie
09:11
apt is newer, needs debian 9
09:12
<vlt>
sebd: Ok, thank you. I installed the -l10n pkg via dpkg -i from /var/cache/apt/archives/ now.
09:12
<sebd>
vlt: apt-cache policy iceweasel
09:12
<vlt>
Iceweasel works, is localised and damn fast.
09:13
<sebd>
thank you alkisg I always learn things on this chan
09:13
<alkisg>
TimKramer: edit /etc/default/tftpd-hpa, add "--verbose" next to "--secure", then sudo service tftpd restart, then boot the client and check the syslog about errors in not finding lts.conf
09:14
<TimKramer>
i modified the tftpd-hpa file and its on --secure
09:14
i used a how to from the debian wiki but it is old realy odl :D
09:14
old*
09:15
but the tftp directory is on /srv/tftp
09:15
is this right?
09:15
<alkisg>
(12:11:14 μμ) alkisg: Your lts.conf should be in either /srv/tftp or /var/lib/tftpboot, depending on how you installed ltsp on debian
09:15
Check your tftp server logs
09:16
Only keep one of those two directories, don't use both of them
09:17
<TimKramer>
for the config i used only the /var
09:17
but in the tftp config is /srv/tftp written
09:18
and can u tell me where is the tftp-hpa log located=
09:18
?
09:19
<alkisg>
I wrote it above (adding --verbose and looking at syslog)
09:20
vlt: so you won't get firefox updates anymore?
09:21
<vlt>
alkisg: That’s not the final solution.
09:21
alkisg: But now we know that the slowness was introduced by the update to version: 45.2.0esr-1~deb8u1.
09:22
<TimKramer>
ive changed the tftp directory and i got the xterm
09:22* alkisg has seen numerous changes in the last 8 years that make things worse for thin clients, that's why he's suggesting diskless ltsp fat clients instead, whenever possible
09:22
<TimKramer>
i think we have found my failure
09:25
thanks for your help! :)
09:29
last question. Can i use rdesktop again? I know xfreerdp is newer but rdesktop runs faster as xfreerdp on that client..
09:31
okay i tried and see that i must use freerdp
09:32
<alkisg>
TimKramer: you can install rdesktop and use it, yes
09:33
<TimKramer>
im running in this moment a freerdp connection with 16 bit colour and its look good
09:33
i'll try which works better for me
09:33
thank you 1000 times!
09:33
<alkisg>
What are your client specs, cpu/ram?
09:34
<TimKramer>
256Mhz AMD Geode, 256mb ram
09:34
<alkisg>
OK, yeah that's as good as it can get :)
09:35
<TimKramer>
:)
09:44
okay when i start xfreerdp on lts.conf i got only a black screen with my mouse. When i use xterm it will work
09:44
Anyone an idea?
09:51
its work :D
09:51
So thanks 4 your help and have a nice day
09:51
bye
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13:10
<||cw>
ooo geodes. hope they were free
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13:49
<highvoltage>
you'd have to pay most people here to take them. a lot.
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20:31
<administrador>
como puedo poner en funcionamiento epoptes
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