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


Channel log from 26 March 2018   (all times are UTC)

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08:46
<Guest11144>
good day everyone, does LTSP support UEFI PXE booting or not as yet?
08:56
<alkisg>
Guest11144: not automatically, no
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08:56
<alkisg>
One can surely configure that manually, but there's not even documentation for that yet
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09:02
<Guest11144>
Hi Alkisg, not sure what you mean by "not automatically, no"
09:12
<alkisg>
Guest11144: I meant that when you run ltsp-update-kernels, no uefi configuration is generated, so uefi clients won't boot
09:12
But if you manually configure dnsmasq/isc-dhcp, and pxelinux, then of course ltsp clients can boot over uefi
09:13
The problem is that there's no documentation on how to manually configure those, you'd need to search on the internet
09:13
I've done it but I haven't documented it
09:19
<Guest11144>
no worries I believe we will be able to figure it out
09:19
the reason I ask is that the specific fat clients we have do not work with legacy boot + i915 driver
09:19
but if I do a base install of ubuntu using no modeset in legacy mode, then boot into uefi mode
09:20
it works perfectly on that client 1600x900
09:20
it's a hp pro-one 400 g2 with an intel HD 530 i3-6100t skylake
09:21
<alkisg>
Guest11144: uefi or legacy shouldn't be related at all to if the client boots or not
09:21
Which distro/version/kernel version?
09:21
!nomodeset
09:21
<ltsp>
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".
09:22
<alkisg>
I doubt you need nomodeset in intel though, unless you have some misconfiguration in xorg packages
09:23
<Guest11144>
It is very strange I can assure you. If I boot into legacy with ubuntu, I have to use nomodeset, the i915 driver puts the PC into a self testing loop, red blue green etc
09:23
when I change it to secure boot disable and legacy boot disable in the bios it works perfectly fine
09:24
ubuntu 16.04 kernel 4.15
09:24
sorry 18.04
09:24
but we have tried with numerous kernels
09:25
the only way we're currently able to boot the clients via pxe is using a legacy boot, but with nomodeset the clients become extremely unstable
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13:16
<alkisg>
Guest11144: so if you try to boot the stock ubuntu live usb stick there, without using nomodeset or anything, it fails with red/green/blue loops? I'd file a bug report in xorg for this...
13:16
(in legacy mode)
13:17
The xorg.0.log file would help a lot in troubleshooting this
13:18
<fiesh>
alkisg: also, it appears our fat clients do work stably now :)
13:31
<alkisg>
fiesh: yey!
13:31
You got me worried there for a while!
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14:23
<fiesh>
hehe
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15:57
<fiesh>
alkisg: ok, one problem remains... lpq finds the right printer, firefox used to find the garbage printer that was also configured in cups but NOT the default printer
15:57
so I deleted the garbage ink jet printer entirely, now firefox doesn't find any printer :/
15:57
and the same with thunderbird
15:57
I don't know how they find their printers, obviously not via lpq
15:58
<||cw>
via cups?
15:58
or maybe lpd?
15:59
<fiesh>
cups on the server
16:00
https://unix.stackexchange.com/questions/348686/unable-to-print-to-cups-printers-with-firefox
16:00
hmm no idea what that translates to, but seems relevant
16:01
also, lpq lists it, lpstat -a not
16:01
<alkisg>
fiesh: where is the printer, on the clients or on the server or elsewhere?
16:01
<fiesh>
hmm ok, lpr also doesn't work any more
16:01
it just lists the queue :(
16:01
connected to the server, it's a network printer though
16:01
postscript -- but I'd prefer it if it went through the server, but not strictly necessary
16:02
<alkisg>
Through the server is fine. So, does it work fine currently on the server itself now?
16:03
<fiesh>
printing a test page successfully right now... let me try lpr on it directly as well
16:03
the thing is, it used to work, although I'm not sure if it worked from firefox it definitely worked on the clients
16:03
<alkisg>
OK, now on a client, cat /etc/cups/client.conf, does it have the server ip there?
16:03
<fiesh>
yes, checked that
16:03
server works fully
16:04
<alkisg>
so, (1) printer works on server, (2) `cupsctl | grep share` on the server says "_share_printers=1", and (3) cat /etc/cups/client.conf on the client, has the server ip?
16:05
<fiesh>
(1) yes, (2) yes, (3) yes
16:05
and I set "sharing to allowed"
16:05
hmm sorry I have to leave now, argh... I'll be back tomorrow afternoon
16:05
<alkisg>
All soundfine though, try restarting cups
16:06
<fiesh>
thanks for the support though anyhow
16:06
will try tomorrow!
16:06
<alkisg>
np
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