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hi all! experiencing an unusable screen after booting a dell fx130 thin-client on a ubuntu 10.04 ltsp. Any hint ?
|07:46||alkisg has joined IRC (alkisg!~alkisg@ubuntu/member/alkisg)|
What does "unusable screen" mean, specifically?
|07:53||komunista has joined IRC (firstname.lastname@example.org)|
either screen 7 or screen 1 show random pixels
alkisg: nomodeset: Unfortunately, Kernel Mode Setting (KMS) doesn't work well with some cards. To disable it, open /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default and replace "quiet splash" with "nomodeset".
Try that, see if it helps
during the boot, i can see loading vmlinuz, initrd.img... ready, then the verbose boot start, and then the screen go random art pixels...
i've already removed quiet splash, and now just added nomodeset without luck
If you put SCREEN_02=shell in lts.conf, so that X doesn't try to start at all, do you still see random pixels?
yes. in fact, it seems that the boot process get stuck even before reading lts.conf (whatever the number of SCREEN_XX i put in lts.conf, always have screen 1 and 7)
Are you sure that you're modifying the correct pxelinux.cfg/default, and the correct lts.conf?
Maybe you're using the wrong path...
Anyway try this: in pxelinux.cfg/default, put: init=/bin/bash
This is the earliest you can have a prompt, after the initramfs
|08:22||Parker955 is now known as Parker955_Away|
To verify if you're using the correct pxelinux.cfg/default or not, change "vmlinuz" to "notexists" and verify that it doesn't even load the kernel
i am using the correct pxelinux.cfg/default, tested with another machine, works (even splash screen ok) then hangs with error :
failed to connect to NBD server... ok, ok, how do I configure this nbd server ?
So now you're past the random pixels problem?
Or are you just using another client until you properly configure your server?
yes, using another client... need to configure this nbd-server thing, don't know how :-(
Which distro/version are you using?
Paste the output of those commands:
grep nbd /etc/inetd.conf
grep initrd /var/lib/tftpboot/ltsp/i386/pxelinux.cfg/default
ls -l /opt/ltsp/images
netstat -nap | grep :2000
hum, no inetd.conf, and no nbd in xinetd.conf - initrd in pxelinux: append ro initrd=initrd.img quiet splash nbdport=2001
and nothing listen on port 2000 nor 2001
Hmmm maybe people using xinetd recently...
and no config in /etc/ndb-server/
Did you deliberately choose xinetd over openbsd-inetd, or it happened by mistake?
(Ubuntu/LTSP uses openbsd-inetd by default)
this server config is in fact an openvz container from proxmox with a "standard ubuntu 10.04" preinstalled. then i've just added ltsp-server-standalone
Maybe those people preinstalled xinetd for some reason
Better install openbsd-inetd instead, so that you have a usual ltsp installation, it'll make things easier for troubleshooting
sudo apt-get install openbsd-inetd
and to autoconfigure nbd:
sudo ltsp-update-image --force
hey, cool, it works !! at least for a standard pc. now i need to make it works with this damned Dell-fx130. Anyway, thanks so far for your help, alkisg !!
electrodib: ok, so for dell-fx130, are you sure that if you put "init=/bin/bash", you still get the problem?
That would mean that the problem happens too early, in the initramfs
yes, it seems to happens when switching to framebuffer...
It shouldn't switch to framebuffer with "quiet splash" removed and "nomodeset" in it
That's why I believe that you either didn't do it correctly, or that you're using the wrong path
Without "quiet splash" and with "nomodeset", the only change that happens is with console-setup, which loads the character fonts into vga tables
If *that's* the problem, then you can tell console-setup to not change the default vga tables
hum... so the pxelinux.cfg/default line to edit would look like: append ro initrd=initrd.img nomodeset init=/bin/bash, right ?
i'm pretty sure of the right path for this file, as i'm in fact using pxelinux.cfg/01-00-e0-c5-45-86-c9 and see the fx130 loading this file
Good. So, let's see if the problem is the vga tables
Replace "init=/bin/bash" with "break=top"
Reboot the client. Do you get an initramfs prompt?
Now we want to test replacing the "setfont" executable with a harmless one
While still in the initramfs (==temporary change)
Unfortunately we don't have /bin/true to symlink to it
So, do this: echo '#!/bin/sh' > /bin/setfont
chmod +x /bin/setfont
hum, i've a prompt, but can't write anything at it !!
And then press ctrl+d to exit the prompt
Ah, you have a usb keyboard?
Can you get a ps/2 one?
|09:38||komunista has left IRC (email@example.com, Quit: Leaving.)|
yes, usb... i have some ps2 somewhere, back in a few minutes...
Remember that you need to power off the client to plug in the ps/2 keyboard
all done, without success !!
So it still had the problem at the same point? Or later on, after the initramfs, when setfont was called again from the nbd image?
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Btw, it might be a good idea to try to boot that with a live usb stick
But in any case, if you put "break=top" and disable setfont, and at the same time have "init=/bin/bash" so that it gives you a shell as early as possible, then your VGA shouldn't be touched by linux at all.
So it would be very very strange if you had problems with those conditions.
Yes, after disabling setfont, screen become random before having a shell. Haven't have any success with my ubuntu 10.04 usb, but the fx-130 start natively with a ubuntu 9.04 heavily modified by devon it
so at least i know it can start a X server
Which graphics card does it use?
so it's a VIA for almost everything : VIA Eden proc, VIA usb, VIA pic, etc... except for the ethernet (Realtek RTL-8110)
Maybe some broken graphics module then, which breaks your VGA even before X
Well, you can use a 9.04 chroot in your 10.04 server, if you don't find another solution
ltsp-build-client --dist=jaunty or something like that
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hello alkisg ! finally i've installed the latest ubuntu 11.04 and at least it boot ! Thanks again for your patience :)
You could also install a different kernel
With apt-get install linux-lts-backport-image-natty
why not. I always prefer LTS version when it's not for me... Anyway, i've a brand new task : connect this ltsp server with samba4 (AD) users...
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so quiet today...
It usually is, on Sundays...
well, I have more time on sundays to chat, other days usually I worl
except today, that I have to work for a rails project I'm in troubles with
btw, I've subscribed diaspora, do you want an invite too?
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Another social networking site? :O
Anything special there?
yep, should be build to respect users
very rare feature
is also distribuited by design
well, better googling at it if you want, is in alpha stage
of course will never kill FB or google+
is build on rails and AGPL3 code, you can grab the source
So normally a user installs it in a web serverr?
(yeah reading that as we speak...)
only if you WANT to run the server, otherwise you don't have to (I don't)
I'm wondering if it could be used to organize teachers + students in schools
never tried moodle? (me not, but seems the right product)
I did... I don't know it seems to me like it misses something to make it attractive
Maybe it needs more ajax
well, if you want to have a look (it's in Alpha stage) I can send you an email-invite
Nah I'll wait till it gets more publicity etc
ok, no problem :)
back to work now, see you :)
Those things are time killers :D facebook, wave, google plus...
hehehe, really, irc also
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