Ask Ubuntu General Room

2:00 PM

@TheWanderer obviously he's a civil engineer. And through out my interaction with them, I can see that CE are not interested in programming at all. Basically each time I tutor a CE , they just want ze codez and that's it

So yeah . . . that pisses me off

Meanwhile, I've exam tomorrow, and we agreed to meet up again.

So I think I'm gonna give that guy ze codez and go on my merry way all the way to victory town to study EMF stuff

terdon

@SergiyKolodyazhnyy get used to it. I've had to teach people like that very often. The thing is, most people dont' care about programming and there's no reason a civil engineer would find it interesting. They want to learn how to build bridges, not programs. So I can understand why they don't care and only want something that works.

Sergiy Kolodyazhnyy

@terdon I understand that,too, but at least for the sake of passing the class maybe a little effort would be nice ?

terdon

When you don't care about what the class teaches, you just want to pass the damn thing and move on to the things you find interesting. It's one of the problems of teaching people subjects that are only tangentially related to what they are actually studying.

And if you think civil engineers are bad, try teaching 20 biologists how to write perl scripts.

Sergiy Kolodyazhnyy

Oh, I feel you there

Ionică Bizău

0

Q: How to install grub on existing Lubuntu installation?

I have Lubuntu 16.04 on an USB flash. It kinda worked, but grub failed to be installed. Now I'm struggling to install grub. I'm in the live cd right now. Any ideas what I should do? I tried to mount the partition and run: grub-install --root-directory=/mnt /dev/sda but this failes with The...

I asked this question ^ I'd really appreciate any suggestions!!!

terdon

2:05 PM

Program: `Missing right curly or square bracket at /home/terdon/scripts/foo.pl line 4, at end of line`
Student: "Whaaaaaaaa it's not working, I have no idea why"
Terdon: *sigh*

@IonicăBizău Come on, give us something to go on! Are you chrooted? How did you mount the local drives? Hint: looks like you're not chrooted. Just follow the instructions here:

11

A: How can I fix/install/reinstall grub?

So, it sounds like you have not installed a boot loader (e.g. grub) on the disk. This means that although you have a valid OS on it, there is no way to boot it and so you can't use it. You need to attach the HDD to a working computer (you can use a live CD), set up a chroot environment and insta...

Ionică Bizău

@terdon Exactly, not chrooted.

Thanks, will check that out.

Sergiy Kolodyazhnyy

@terdon Well, what would you suggest : git commit to teaching that guy today or just write ze codez and go focus on my exam ?

terdon

@SergiyKolodyazhnyy Depends on i) exactly what your job is and ii) what the student wants.

Ionică Bizău

@terdon grub-install /dev/sdb fails with The program 'grub-install' can be found in the following packages:...

@terdon Should I run that when I'm in chroot?

And apt install grub fails with E: Package 'grub' has no installation candidate

terdon

Yes, everything needs to be run from the chroot environment.

Ionică Bizău

2:11 PM

OK, how to solve that?

terdon

Run it from the chroot.

Ionică Bizău

This got so frustrating... :-( But I think if you solve it I'll give you a bounty

terdon

And are you sure the name of the grub package is just "grub"?

Ionică Bizău

The program 'grub-install' can be found in the following packages:
 * grub
 * grub2-common
 * lupin-support

terdon

OK.

Are you running everything from the chroot environment?

Ionică Bizău

2:13 PM

I think it has internet connection issues... :-(

Yes

# ping google.com
ping: google.com: Temporary failure in name resolution

Any ideas?

It fails to access the packages too.

terdon

OK, then edit your question and add all this. I had no idea what you were doing from what your question said.

Ionică Bizău

@terdon This will sound bad, but I can't even edit the question.

terdon

Did you follow all the steps when doing the chroot? Did you mount the /dev directory?

Ionică Bizău

It's slow only on specific sites.

terdon

@IonicăBizău ?

Ionică Bizău

2:14 PM

Yes.

terdon

What is, the live system?

Ionică Bizău

When not chrooted it works fine.

It's Lubuntu 16.04 live cd

terdon

Then exit the chroot, edit your question and add all this information.

cl-netbox

Hello :)

Ionică Bizău

@terdon I cannot do that because askubuntu is terribly slow in the browser.

terdon

2:15 PM

@IonicăBizău Didn't you say it works fine when not chrooted?

Ionică Bizău

@terdon Yes, but that's in terminal, not in the browser.

I'm trying to edit the question.

Maybe the upload speed is terribly slow, have no idea...

mount --bind /etc/resolv.conf /mnt/foo/etc/resolv.conf solved the internet in chroot

Doing apt update.

@terdon OK, so that command you suggested failed like this:

Searching for GRUB installation directory ... found: /boot/grub
Unknown partition table signature
Unknown partition table signature
Unknown partition table signature
Unknown partition table signature
Unknown partition table signature
The file /boot/grub/stage1 not read correctly.

terdon

@IonicăBizău nice

Ionică Bizău

@terdon So, how to solve this?

terdon

Is your /boot a separate partition?

Ionică Bizău

(sorry, updating the question just hangs)––will do that once I'm home

Hmm, to be honest I don't know...

How can I check?

I don't think so.

terdon

2:25 PM

@IonicăBizău df /boot

Ionică Bizău

# df /boot
Filesystem     1K-blocks    Used Available Use% Mounted on
/dev/sda1      477863704 2650432 450869364   1% /

terdon

OK, it isn't a separate partition.

Ionică Bizău

So, now what would be the next step?

(I'm doing this for a friend and the evening is slowly coming... :/ )

terdon

What do you have in /boot/grub/grub.cfg?

Ionică Bizău

It's a long file. Should I paste it here?

gist: 30e9621d9c4134704e5d393a8358d408, 2017-04-09 14:28:36Z

gistfile1.txt

terdon

2:30 PM

Is this EFI?

Ionică Bizău

I feel that's the issue: I guess it's related to bios legacy booting...

But I have no idea where to set that.

I didn't see anything in BIOS about it...

How can I check if it's EFI

terdon

Might be, might not. I don't even use grub anymore myself, I just use systemd-boot.

Ionică Bizău

So, can that be an alternative?

terdon

@IonicăBizău ls /boot is there an EFI partition?

Ionică Bizău

I'm really bad in this... :-(

Lubuntu was saying that I have to install grub or an alternative.

terdon

2:32 PM

But also, what exact command are you running. Is it still grub-install --root-directory=/mnt /dev/sda from the chroot?

Ionică Bizău

@terdon That wasn't from the chroot

terdon

What are you running from the chroot then?

Ionică Bizău

@terdon I followed your steps and run the grub commands from chroot.

Before your answer, I didn't use chroot.

terdon

OK, so you ran sudo grub-install /dev/sda from the chroot?

Ionică Bizău

Exactly

terdon

2:34 PM

And you also ran sudo grub-mkconfig -o /boot/grub/grub.cfg before that?

Ionică Bizău

Yes, that went fine.

terdon

Damn then. Don't really know what else to try.

Ionică Bizău

Should I try systemd-boot?

terdon

When you manage to connect, please update the question. Someone with more EFI-fu might be able to help.

@IonicăBizău You could. Systemd can boot EFI systems (of course, it does everything else). But I can't really walk you through it. I did it once by following the Arch wiki but that's all I know of it.

Ionică Bizău

Oh, I see.

Thanks for suggestions!

terdon

2:36 PM

Good luck!

Ionică Bizău

Thanks

terdon

By the way, that seems like a very common error so also check the dozens of google results for it.

Ionică Bizău

I'm doing that... but can't understand them... :-(

Anwar

that whole killing process or sacrificing child seems to be a bug. Now repacked stock xenial kernel and installed. Should not happen again if they were right

Anwar

3:07 PM

nah. happened again :(

Byte Commander

@terdon How is gummiboot compared to GRUB? Wikipedia and Arch Wiki read like it is pretty minimal.

its installation and configuration reads pretty complicated though, whereas GRUB just worked™ for me

terdon

3:22 PM

It is pretty minimal, yes. But the installation was very painless for me. Everything basically worked. In contrast, I had a lot of trouble getting grub to play nice with my EFI install.

Zanna

GRUB is a diva...

TheWanderer

guh

why am I so tired

Zanna

not enough sleep?

anaemia?

TheWanderer

uh

Seth

3:57 PM

@fossfreedom is there no budgie-desktop package in the repos I can install?

Ubuntu Questions on U&L

0

Q: what is "kernel–user space API"?

I am studing about apparmor. And to be more specific, for the "hats" inside the policy. In here [Apparmor Profile Language] says for "hats" that, it calls change_hat API. Can you explain the difference between the "kernel–user space" API and the "kernel internal" API? And which of these 2 differe...

linux ubuntu kernel apparmor api

Seth

4:26 PM

aha, 16.10 has a budgie-desktop package.

TheWanderer

yehs

still no window switcher though

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