IRC chat logs for #ltsp on irc.libera.chat (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.
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| 07:50 | Then last week I switched the first users to a fresh Debian 8 install.
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| 07:50 | Happiness all around! It was incredibly fast.
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| 07:50 | But …
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| 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.
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| 07:52 | Any idea what’s going on here?
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| 07:55 | <alkisg> vlt: are you using thin or fat clients?
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| 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?
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| 07:56 | <alkisg> (or localapps)
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| 07:56 | Yes, it depends on where the cpu usage is, server or client
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| 07:56 | <vlt> Thin then.
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| 07:57 | <alkisg> What are your client specs, cpu/ram?
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| 07:57 | <vlt> Low
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| 07:57 | <alkisg> Like 256 RAM?
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| 07:57 | <vlt> 500–1000
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| 07:57 | <alkisg> Can you be more specific, because you're in the limit between thins and fats
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| 07:58 | <vlt> Did the firefox developers change something critically?
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| 07:58 | <alkisg> I don't know about firefox in general
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| 07:58 | <vlt> Some machines have 512 MB RAM, some 1024.
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| 07:58 | <alkisg> I know about youtube, they're using html5 now
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| 07:58 | <vlt> It the HP t5xxx series.
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| 07:58 | <alkisg> Machines with 1024 might make better fat clients than thin
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| 07:59 | <vlt> I wonder what exactly changed with the last update. It was a very well working system until last weekend.
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| 08:00 | <alkisg> That would be a question for #firefox...
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| 08:00 | But if you downgrade firefox, everything's well again?
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| 08:00 | <vlt> I’d have to try.
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| 08:00 | * vlt has to find out how to downgrade | |
| 08:01 | <alkisg> apt policy firefox => shows you the available versions
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| 08:01 | apt install firefox=specific-version
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| 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
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| 08:02 | Which has a cpu score of 478
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| 08:02 | I wouldn't recommend to anyone to buy that as a fat client,
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| 08:02 | but nevertheless, it will still function much better as a fat client rather than a thin client
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| 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
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| 08:03 | !ltsp-pnp
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| 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
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| 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.
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| 08:06 | <vlt> sebd: Thank you. That would be the critical change the firefox developers made.
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| 08:07 | Any idea how to get it working again?
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| 08:09 | <sebd> vlt: apt-get install iceweasel=38.8.0esr-1~deb8u1
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| 08:10 | I wonder if apt-get will work out dependancies on its own
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| 08:10 | <alkisg> As long as they're in the repositories, it does
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| 08:10 | <vlt> sebd: Thanks, I’ll try that liek NOW.
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| 08:20 | sebd: It’s even still in /var/cache/apt/archives/ ;-D
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| 08:32 | sebd: The file there is called /var/cache/apt/archives/iceweasel_38.8.0esr-1~deb8u1_amd64.deb
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| 08:32 | Whould I use the _amd64 part as well?
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| 08:32 | *Should
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| 08:40 | <sebd> vlt: I do not think you should
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| 08:44 | <vlt> sebd: Ok, it’s fast again.
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| 08:45 | l10n is missing.
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| 08:45 | How to install the corresponding iceweasel-l10n-de package?
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| 08:45 | sebd: Where did you get that version string from?
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| 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
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| 08:49 | <alkisg> Hello
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| 08:49 | <TimKramer> can someone help me with modifying the lts.conf?
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| 08:49 | <alkisg> !ask
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| 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.
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| 08:51 | <alkisg> TimKramer, just ask your question...
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| 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
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| 08:52 | What can i do?
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| 08:52 | <alkisg> !rdp
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| 08:52 | <ltsp> I do not know about 'rdp', but I do know about these similar topics: 'RDP-localdev', 'freerdp', 'win8-rdp'
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| 08:52 | <TimKramer> [default]
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| 08:52 | LDM_AUTOLOGIN = True
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| 08:52 | [00:0D:B9:25:59:E0]
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| 08:52 | LDM_USERNAME = ltsp233
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| 08:52 | LDM_PASSWORD = Dotz4u3r!
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| 08:52 | SCREEN_01 = startx
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| 08:52 | SCREEN_02 = ldm
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| 08:52 | SCREEN_04 = rdesktop
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| 08:52 | RDP_SERVER = 192.168.1.111
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| 08:52 | thats my lts.conf
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| 08:52 | <alkisg> !freerdp
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| 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>.
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| 08:52 | <alkisg> Try this:
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| 08:52 | SCREEN_04=xterm
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| 08:53 | Reboot the client, do you get an xterm on vt4?
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| 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
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| 08:57 | Try with only this, as your lts.conf:
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| 08:57 | [Default]
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| 08:57 | SCREEN_07=xterm
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| 08:58 | Reboot the client, and if you get an xterm, try to manually use xfreerdp from there to connect to your server
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| 08:58 | When you've done that step, we can continue with the next one
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| 08:58 | <TimKramer> the client is rebooting
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| 08:58 | pleasy wait a sec
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| 09:00 | i have modified the lts conf an rebooted the client but i see again the ldm screen :(
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| 09:04 | <alkisg> That means that your client doesn't read lts.conf at all
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| 09:04 | <vlt> TimKramer: Can you check if /etc/lts.conf on the client is the one you changed?
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| 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?
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| 09:07 | <TimKramer> Im using debian 8 because i need for the clients a non pae kernel
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| 09:07 | <alkisg> Is that jessie?
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| 09:07 | <TimKramer> yes
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| 09:08 | <alkisg> Are you using isc-dhcp-server, or e.g. dnsmasq or something else?
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| 09:08 | <TimKramer> No im using our utm from sophos for dhcp
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| 09:08 | <alkisg> And for tftp? tftpd-hpa?
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| 09:09 | <TimKramer> tftp
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| 09:09 | <alkisg> Which tftp server?
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| 09:09 | Your lts.conf should be in the tftp directory
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| 09:09 | Where is your lts.conf now?
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| 09:10 | <TimKramer> @vlt: Im editing the lts.conf on the server on /opt/lib/ltsp/i386/lts.conf
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| 09:10 | <alkisg> lib?!
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| 09:10 | <TimKramer> tftp server was installed with the ltsp packet from the debium repo
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| 09:10 | alkisg just wait a sec i will control
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| 09:11 | <alkisg> Your lts.conf should be in either /srv/tftp or /var/lib/tftpboot, depending on how you installed ltsp on debian
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| 09:11 | <TimKramer> sry the directory for lts.con is on /var/lib/tftpboot/ltsp/i386/lts.conf
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| 09:11 | <sebd> vlt: I looked into aptitude, because "apt policy" does not work in Debian 8.
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| 09:11 | <alkisg> sebd: apt-cache policy in jessie
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| 09:11 | apt is newer, needs debian 9
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| 09:12 | <vlt> sebd: Ok, thank you. I installed the -l10n pkg via dpkg -i from /var/cache/apt/archives/ now.
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| 09:12 | <sebd> vlt: apt-cache policy iceweasel
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| 09:12 | <vlt> Iceweasel works, is localised and damn fast.
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| 09:13 | <sebd> thank you alkisg I always learn things on this chan
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| 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
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| 09:14 | <TimKramer> i modified the tftpd-hpa file and its on --secure
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| 09:14 | i used a how to from the debian wiki but it is old realy odl :D
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| 09:14 | old*
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| 09:15 | but the tftp directory is on /srv/tftp
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| 09:15 | is this right?
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| 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
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| 09:15 | Check your tftp server logs
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| 09:16 | Only keep one of those two directories, don't use both of them
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| 09:17 | <TimKramer> for the config i used only the /var
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| 09:17 | but in the tftp config is /srv/tftp written
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| 09:18 | and can u tell me where is the tftp-hpa log located=
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| 09:18 | ?
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| 09:19 | <alkisg> I wrote it above (adding --verbose and looking at syslog)
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| 09:20 | vlt: so you won't get firefox updates anymore?
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| 09:21 | <vlt> alkisg: That’s not the final solution.
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| 09:21 | alkisg: But now we know that the slowness was introduced by the update to version: 45.2.0esr-1~deb8u1.
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| 09:22 | <TimKramer> ive changed the tftp directory and i got the xterm
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| 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
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| 09:25 | thanks for your help! :)
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| 09:29 | last question. Can i use rdesktop again? I know xfreerdp is newer but rdesktop runs faster as xfreerdp on that client..
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| 09:31 | okay i tried and see that i must use freerdp
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| 09:32 | <alkisg> TimKramer: you can install rdesktop and use it, yes
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| 09:33 | <TimKramer> im running in this moment a freerdp connection with 16 bit colour and its look good
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| 09:33 | i'll try which works better for me
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| 09:33 | thank you 1000 times!
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| 09:33 | <alkisg> What are your client specs, cpu/ram?
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| 09:34 | <TimKramer> 256Mhz AMD Geode, 256mb ram
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| 09:34 | <alkisg> OK, yeah that's as good as it can get :)
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| 09:35 | <TimKramer> :)
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| 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
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| 09:44 | Anyone an idea?
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| 09:51 | its work :D
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| 09:51 | So thanks 4 your help and have a nice day
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| 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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