Ask Ubuntu General Room

Kaz Wolfe

6:00 PM

@onbree Nothing that concerns you.

@ByteCommander I answered your question lol

Byte Commander

But huh? I can't use it as swap properly through fstab?

Kaz Wolfe

whaddya mean

the arch wiki isn't quite as accurate as a fresh ubuntu, i think

Byte Commander

bytecommander@BC-AlkaliMetal:~$ ll /dev/mapper/
total 0
drwxr-xr-x  2 root root      80 Aug 29 18:31 ./
drwxr-xr-x 20 root root    4840 Aug 29 18:31 ../
crw-------  1 root root 10, 236 Aug 29 18:31 control
lrwxrwxrwx  1 root root       7 Aug 29 18:31 cryptswap -> ../dm-0
bytecommander@BC-AlkaliMetal:~$ grep crypt /etc/fstab
# cryptswap on /dev/sda4 configured in /etc/crypttab
/dev/mapper/cryptswap				none		swap,nofail	sw	0	0
bytecommander@BC-AlkaliMetal:~$ sudo swapon -a
bytecommander@BC-AlkaliMetal:~$ swapon

Trying your answer now...

Zacharee1

test

Kaz Wolfe

potato

Zacharee1

6:03 PM

hmm

Byte Commander

@KazWolfe blkid does not output anything

Kaz Wolfe

did you mkswap?

Nathan Osman

ffmpeg -r 24 -start_number 60 -i %04d.png -qmax 16 out.mp4

Why does that result in this?

Input #0, image2, from '%04d.png':
  Duration: 00:00:04.16, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgba(pc), 1920x1080 [SAR 2835:2835 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc

Byte Commander

I did.

Nathan Osman

"25 fps" ???

Byte Commander

6:04 PM

lsblk shows it though:

bytecommander@BC-AlkaliMetal:~$ sudo mkswap /dev/sda4
Setting up swapspace version 1, size = 7,6 GiB (8095002624 bytes)
no label, UUID=4c466504-54ba-47c7-850b-f6e9ee19b476
bytecommander@BC-AlkaliMetal:~$ blkid /dev/sda4
bytecommander@BC-AlkaliMetal:~$ lsblk -f /dev/sda4
NAME FSTYPE LABEL UUID                                 MOUNTPOINT
sda4 swap         4c466504-54ba-47c7-850b-f6e9ee19b476

Kaz Wolfe

well then there's your uuid

no idea why blkid doesn't want to show it.

Byte Commander

Are we missing an option for blkid?

Kaz Wolfe

oh, sudo blkid

Byte Commander

Ah, there it is:

$ sudo blkid /dev/sda4
/dev/sda4: UUID="4c466504-54ba-47c7-850b-f6e9ee19b476" TYPE="swap" PARTLABEL="Shared Linux Swap" PARTUUID="8be1dd06-7cfb-45b0-9360-a319c07c88d2"

It's all about making sandwiches...

Kaz Wolfe

first (regular) uuid

Byte Commander

6:06 PM

Zacharee1

@ByteCommander I don't like sandwiches

@ByteCommander so what you're saying is you're a CLI noob

Kaz Wolfe

@Zacharee1 sudo make me teriyaki chicken

2

Byte Commander

sudo rm -rf /home/zacharee1

Zacharee1

@KazWolfe E: (13) Permission Denied!

Kaz Wolfe

zacharee1's actual instance is a block device.

Zacharee1

6:07 PM

@ByteCommander not mah uzernaem

Kaz Wolfe

you need to overwrite it with zeros, or destroy the block

deleting his home will just delete his user storage space.

Nathan Osman

@KazWolfe make: *** No rule to make target 'me'. Stop.

4

Zacharee1

I'm encrypted

Nathan Osman

@ByteCommander Uuuuuuuuuuuuh.

Remember the last time someone did that?

Kaz Wolfe

@Zacharee1 sudo sudo make me teriyaki chicken

Zacharee1

6:08 PM

@ByteCommander (EE): Filesystem is of unrecognized type

Byte Commander

sudo shutdown now

Zacharee1

@KazWolfe E: "sudo" is not a command

Kaz Wolfe

sudo kill -9 1

sudo dd if=/dev/urandom of=/dev/sda bs=1M

Nathan Osman

@KazWolfe That doesn't work anymore.

Zacharee1

@KazWolfe Drive is RAID -- infinite write-protected duplicates

Kaz Wolfe

6:09 PM

@Zacharee1 okay then, let's burn down the datacenter.

Nathan Osman

devrant.io/rants/158397 <--- this is awesome

Kaz Wolfe

wait, infinite hard drives? so... how are we not dead under an infinite mass of hard drives right now?

Zacharee1

@KazWolfe E: what makes you think infinite storage devices are all stored in one location

@KazWolfe I: have you heard of Google

Kaz Wolfe

@Zacharee1 okay fine. mount -o remount,rw /; rm -rf /

Zacharee1

@KazWolfe W: Why the hell would a write-protected drive be software protected

Kaz Wolfe

6:11 PM

but your entire interface is only a block device to the SE servers, so we can just kill that block device. And this conversation has become silly.

Zanna

@Zacharee1 heh maybe I'm just aneedyot

Zacharee1

wat

Kaz Wolfe

@ByteCommander How goes?

Zacharee1

@KazWolfe I thought we upgraded you to iOS 9.3

Byte Commander

@KazWolfe Why offset 1024?

Kaz Wolfe

6:12 PM

or did i break everything again?

Zacharee1

why are you running commands anyway?

Byte Commander

Arch wiki says to use 2048 blocks offset.

Kaz Wolfe

Because that's what the default Ubuntu install did

Byte Commander

You installed with full disk encryption?

Kaz Wolfe

The arch wiki uses EXT2.

No, just encrypted home, which also crypts your swap.

Byte Commander

6:13 PM

Ah. Okay...

I'll try 1024 then.

Zanna

there you go @Zacharee1 I give you an upvote for your noble efforts on that question (since my gimp is resurrected)

Zacharee1

yayz

8585 rep :p

2

Zanna

nice numeral action there

Kaz Wolfe

wait n im dum

Zacharee1

@KazWolfe no rly

Kaz Wolfe

6:15 PM

POCKET COFFEE

Byte Commander

rebooting...

Zanna

is this actually weird or just normal when /home is on another partition? they could also access by clicking "Computer" in the sidebar? askubuntu.com/questions/810794/root-in-a-weird-location

Zacharee1

@Zanna I have absolutely no idea what the question is asking

Anwar

my /home is in another partition

Zanna

yeah it's rather unclear

so @Anwar you can say, is there anything weird there or are they just confused? it looks ok to me

Kaz Wolfe

6:21 PM

that setup is okay

nautilus might be a bit confused, but that's a standard setup

Zanna

yeah seems so

someone can answer then

Byte Commander

@KazWolfe Okay, cryptswap is coming up now and even gets recognized as device with its own UUID, but it does not automatically get used as swap yet.

~$ lsblk -f /dev/sda4
NAME        FSTYPE LABEL UUID                                 MOUNTPOINT
sda4        swap         4c466504-54ba-47c7-850b-f6e9ee19b476
└─cryptswap swap         a456a0d2-231f-4636-a64b-53a35c7c051e

Kaz Wolfe

YAY!

remove the nofail option from your fstab.

That should work

Nathan Osman

0

Q: Why isn't avconv honoring the FPS value I specify?

I have a sequence of PNG images that looks like this: 0060.png 0061.png 0062.png ... I would like to convert the images to a high-quality MP4 video and I am using the following avconv command to do that: avconv -r 24 -start_number 60 -i %04d.png -qmax 16 out.mp4 As soon as I run that comman...

Le sigh.

Byte Commander

Ah, yes.

But why does nofail break swap?

I would like that my system still boots even if the cryptswap breaks...

Nathan Osman

6:25 PM

ARGH.

Kaz Wolfe

@NathanOsman yes?

Anwar

what are they saying weird on that output?

Byte Commander

@NathanOsman Real programmers use argv instead ;-)

2

Kaz Wolfe

because cryptswap takes time to init, i think

Byte Commander

But even running sudo swapon -a later does not enable it with nofail.

Serg

6:27 PM

@ByteCommander your battery output is incomplete . It only showed 2 lines?

Kaz Wolfe

*shrug*

Serg

I think your upower daemon stopped reading your battery for whatever reason

Nathan Osman

@KazWolfe It works now.

See my edit.

Kaz Wolfe

VTC'd

Nathan Osman

Me too :P

Oh :D I can just delete it myself :P

That was weird though.

I used the same command - different result.

Zacharee1

6:34 PM

Some people have a gift for screwing up formatting askubuntu.com/questions/818360/external-hd-not-recognized

edwinksl

it is almost like they post and don't bother checking if it looks readable

Zacharee1

uh oh

Mitchbot

@edwinksl but it's not only that they just put a > before every line. Somehow, lines got merged

@ByteCommander ™

This seems to be a hardware issue askubuntu.com/questions/818360/external-hd-not-recognized

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How is this so entertaining to me

Zacharee1

umm, why did Jacob reset his image and name too?

David Cole - Grammar Police

6:41 PM

No idea

Byte Commander

@Zacharee1 The evil blockquote button. People constantly mix it up with the holy code formatting button... :-/

David Cole - Grammar Police

+1 @ByteCommander

Zanna

the blockquote button works great if you want to include a quote hahaha

why has Jacob gone incognito? :(

Zacharee1

@Zanna it's even better for code though, as some people seem to insist

Anwar

.. and people like nested blockqoute

Zacharee1

6:42 PM

like the users who reverse any edits made to their posts

Byte Commander

Oh no, I hope he's not going to leave us alone...

Zacharee1

> wat this
> `and dis`

darn it chat

@ByteCommander How much sarcasm was there?

XY problem askubuntu.com/questions/818365/…

Byte Commander

Sarcasm? No. I really hope he stays with us.

Zacharee1

also, why do so many non-English speakers think it's either "struck" or "stucked"?

@ByteCommander oh, because "leave us alone" is sort of a figure of speech

Byte Commander

really? Whoopsie...

Zacharee1

6:44 PM

:p

Zanna

ah @Anwar is this the dupe target you wanted? askubuntu.com/questions/817929/…

Anwar

@Zanna yes. but I didn't read the question fully first time. thought it was about root's ui not getting the styles etc

Zanna

oh never mind.... you answered the question, just found your answer ^_^

Kaz Wolfe

@ByteCommander Is it unbroken now?

Serg

Hmmm, I guess Jacob got upset because of recent discussions on meta

Anwar

6:46 PM

thanks :)

Byte Commander

Yeah, I think my cryptswap is working as it's supposed to now.

Kaz Wolfe

sweet. one more problem down

Byte Commander

Yeah.

Kaz Wolfe

does it survive through reboots?

Zanna

I upvoted the question too (it seems good) so OP can upvote your answer if they like it

Byte Commander

6:49 PM

It does :)

Anwar

I can get only 2 upvotes today :)

Zanna

@Anwar nice work :)

Anwar

more than that will be lost :)

Kaz Wolfe

i've already lost probably +80 rep :(

Zacharee1

@Anwar well I'll downvote you

Anwar

6:49 PM

nah

Zacharee1

@KazWolfe poor poor Kaz

@Anwar :p

Byte Commander

And now that I preserve file system info in the first 1024 blocks, I can even use the partition as normal Linux swap as well, e.g. shared with other dual-boot distros, right? @KazWolfe

Anwar

@Zacharee1 nooooo!

Kaz Wolfe

hey i lost over 3000 on Arqade because of the cap. The rage.

@ByteCommander I would assume so. It's just regular swap.

Anwar

@KazWolfe for what?

Kaz Wolfe

6:50 PM

Other OSes might be a bit confused because I don't know how the partition looks to other systems.

@Anwar because of the AU cap.

edwinksl