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Hello guys. I'm currently trying to run an ltsp server over ubuntu-mate-amd64-18.04. I need both 32 and 64bits clients to be able to run, so I have a chroot-less amd64 running well, and made a chroot i386 build. The problem is that when I try to login the i386 client, I get hte following message on client screen: Error: Unknown error in reply to NBD_OPT_GO; cannot continue. Then I drop to a initramfs prompt.
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What config file should be helpful for me to share?
Leandro_: that's just a misconfiguration on nbd-server or dnsmasq
check the logs on the server, maybe it's getting the wrong NBD image
Are you sure that a single 32bit installation isn't best for you?
How much RAM does your server or your best client have?
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The RAM on my server is not really and issue. But my clients are some old 4GB RAM All-in-one, that are able to run 64-bits, but I have also some old HP thin-clients, that I think have only 512MB RAM and are only 32-bits
Leandro_: 32bit installations have problems with much ram, so the server ram is an issue, if it's over 8gb
the 4gb clients will function about the same with 32 or 64bit
So if you have <=8 gb ram on the server, I would go for a single 32bit installation
Much easier to maintain, with no real drawbacks in this scenario
My second choice would be a 32bit installation with an additional 64bit kernel for the server
The dual chrootless/chroot setup would be 3rd or lower choice...
Could you elaborate a little bit on your second choice please?
Could you mention your server ram?
It will make the chat easier
So the idea is, you install/maintain a 32bit chrootless setup. The clients perform fine. The drawbacks are: some apps like e.g. viber are 64-bit only,
Sure, I have between 4GB, up to 8GB if necessary. It is a VM.
and, there's a bug where if you have 32bit and e.g. 10+ GB RAM, the *disk* performance is 100 times slower
alkisg: ah I haven't considered that one... interesting
So, in cases where the server ram is 10+ gb, we install a 64bit kernel
so that the server disk access remains fast, i.e. it doesn't hit that bug
I do not know about 'pae', but I do know about these similar topics: 'non-pae'
So in your case, you'd just go with 32bit chrootless and nothing more
that's a really annoying bug that will probably never get fixed :(
You don't need 64bit, you don't need two kernels
since most development has moved on to 64bit...
Yeah. I do think it makes 64bit hard disk access 2-3 times slower, but noone has cared enough now to solve it, with SSDs and all
I hope some time in the future I'll see a phoronix article "developer solves 10 year old issue, making disk access 2-3 times faster" :D
(i mean, it affects 64bit too, but a lot less than 32bit)
oh, didn't know it caused issues on 64bit
(even if more hidden)
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Sorry, my ISP went down
Could please forward your last messages again?
Thank you. I will go with your solution where I use only 32-bits image. I don't think I'll need much more applications other than the stock ones ubuntu provides.
Thanks a lot alkisg.
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size = 202223351MBErrir: Exported device is too big get a 64-bit machine
I have a 64bit machine in this case, but will have 32bit ones, so i have a 32bit kernel and 32bit server
the img file is 1.5GB though, so what happened here?
||cw: that usually means wrong path, broken symlinks for the image etc
Those nbd errors are really cryptic :)
Check the path mentioned in ltsp_amd64.conf vs the real image path in the disk
path is fine
does ndb not put anything in syslog?
ok I found the issue. my dhcp/pxe is doing it, it's connecting to the wrong server. it also doens't seem to be downloading lts.conf from tftp
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procress, new error. Error in rely to NBD_OPT_GO, and the server says spawn child, then say failed, no child
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Hello. I have debian stretch installed and epoptes 0.5 that work fine except for full screen broadcast. How can i install the version one of epoptes without using the ubuntu ppa repository (ts_sch_gr-ubuntu-ppa-disco)? Thanks.
i could try and backport it to stretch to make it available via stretch-backports
but the next release of debian is coming out soon, so not sure how much free time i have for it
really need to spend some more time testing the next release of ltsp...
epoptes_user3: you might be able to just install one of the alternate vnc viewers, the default installed with epoptes on debian might lack some features ...
oh, it switched to python3 ... that might be hard to backport
if the appropriate python3 dependencies aren't available in stretch, it would be a large project
OK i understand that i will have to wait for next stretch update. Efcaristo poly (merci beaucoup)
no, it most likely will never end up in stretch
will have to wait till buster
which is hopefully not *too* long
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