Ask Ubuntu General Room

00:48

0

Q: Grub Rescue Mode - /boot/grub directory does not exist

I have gone through a lot of questions and answers related to grub rescue but I am having a different problem which I am not able to understand. As per some of the answers, I tried following steps to resolve this problem - First of all I used ls command to get all the partitions which in my c...

Ubuntu Questions on U&L

01:18

0

Q: Ubuntu With Kali Tools Or Kali Itself?

I know that there is a huge aversion to kali Linux based questions because of how many people want to become “lit hackers” or script kiddies or whatever. I’m genuinely interested in learning the field, so, should just use Ubuntu and install the tools on there to learn pen testing and learn Linux ...

ubuntu kali-linux

Nathan Osman

05:32

.li domains stop working before they expire.

:|

Manuel Rodriguez

@UbuntuQuestionsonU&L As far as I understand from the next question, the user is asking if Kali Linux is superior to Ubuntu standalone installation and how this helps to learn more about computer security. A moderator has flagged the question as opinion based, but I think that the question is about the education system and how Artificial Intelligence can help to understand computer networks better. What do you think?

Alpha Romeo

06:53

Hey, I was wondering if the default document viewer uses OCR to select text, because I was able to select text from a pdf which seemed more like scanned document rather than latex. Is OCR really used by the document viewer?

Rinzwind

@ManuelRodriguez he wants to compare apples with pears so yes it is opinionated. Ubuntu is an operating system for daily usage. Adding the Kali tools can help identify problems on your system but you could also install the tool you want for that straight from the repositories (that is what katoolin does anyways). Kali itself is suppose to be a LIVE SESSION and for testing if a network can be penetrated. Totally different thing :)

@AlphaRomeo pdf also can contain "ocr data". That generally is used for copy/pasting. So that is not an actual conversion of the image to text.

Ubuntu Questions on U&L

07:35

0

Q: Swap on secured partition is not being mounting on boot

I've got a work laptop Lenovo P51. There is Win10 on a secured partition. I installed Ubuntu 18.04 on a secured partition as well. Also, I've created a secured partition for swap, but it doesn't mount. The launch time is about 2 minutes what is very annoying here is sudo blkid output and there i...

linux ubuntu swap

Alpha Romeo

@Rinzwind Thanks! did not know that

Rinzwind

09:48

@DavidFoerster I know it is ;-) That was me being funny :D

Fabby

10:16

@DavidFoerster :D :D :D* I was thinking of the Arc the Triomphe in Paris and that the Brandenburg gate looked similar so my fingers wrote "Arch"...

rab

Hi, How can i install Win 7 in a partition where there was installed Win 10 on a dual boot installation with Ubuntu 18.04?

Fabby

@rab That would me more of a superuser.com question. You're trying to replace W10 with W7, not a good fit for Ask Ubuntu.

Rinzwind

@rab why? Kill the dual boot. install virtualbox. Install Windows in there. No more worries about windows deleting your ubuntu during install. Easy backups (just copy the container), sandboxed so a virus is easily removed by restoring a backup. Win-win-win-win scenario :=)

Fabby

Rab is probably downgrading to W7 because W10 takes too much RAM, so VM will take too much too.

(But you're correct to Never Assume Always Ask...)

Rinzwind

2Gb for Ubuntu and 2Gb for W7 in vbox works perfectly. And that is if there is only 4Gb memory. With 8 or more it becomes trivial :-)

Fabby

10:31

16GB here, but still dual booting. (but then I don't use Windows except to change by keyboard backlight colours)

rab

Win 7 is enough for me it is just in case some app or file I could not manage with Ubuntu, and Win 10 is slow and demanding to much care. Thanks a lot for your answers.

Fabby

@rab They're not answers... They're just chats, so take any advice here with a Kg of salt.

Rinzwind

@Fabby we do weights in "Alps" here. 1Kg is 0.0000000001 Alp

@rab that reads like a perfect Vbox setup.

here at work we do everything with containers. So easy to use once set up.

Last count we have 79 containers _O-

and 250 GCE's :=)

rab

10:46

Thanks any way for your quick replies!

Fabby

@Rinzwind and speed in sheeps in a vacuum? and lengths in Furlongs?

:D ;-) :D

Rinzwind

@Fabby yes and no. Lengths is in AUs

Fabby

@Rinzwind theregister.co.uk/Design/page/reg-standards-converter.html

Rinzwind

I like the Brontosaurus

Fabby

:-) :-) :-) me too

Byte Commander

10:49

Does anyone know about getdeb.net being down? Seems broken for few weeks already now, but I can't find no info about it

o/ all first :)

Fabby

o/

Rinzwind

bytey! :=)

Fabby

seems broken here too, no info on the past though.

Rinzwind

probably a server crash

They had a big one once before IIRC

HA 2011!

8

Q: What should I do when the GETDEB repository is down?

I'm trying to install programs/files from the getdeb repo but get a "check your internet connection" error. Programs than I've tried include Qbittorrent and Mozilla-Plugin-VLC. Through the terminal I get the following errors: Err http://archive.getdeb.net/ubuntu/ natty-getdeb/apps qbittorren...

package-management repository

Byte Commander

seen that

Rinzwind

10:51

plus.google.com/+getdeb

you could post there

Byte Commander

eew, G+

also last post seems to be a year ago

Rinzwind

twitter.com/hashtag/getdeb

twitter.com/getdebupdates >:)

2017 :X

Fabby

SPAM

Rinzwind

Soooooooooo fair to assume they did not pay their bill

Fabby

-------^ What the wizard said!

Byte Commander

10:54

RIP :(

Rinzwind

Ah it is easy to set up a new one :=D

Byte Commander

well, gonna disable the PPA then. Will have to find other repos for those applications I got from them some other time

Rinzwind

Just a bunch of images and a link to the ubuntu repo

Byte Commander

also I'm trying to set up bumblebee, any useful hints?

Rinzwind

no :=) only witty ones

like ... don't get stung :D

Bumblebee won't work on 18.04 it seems

Last update is from 14.04 :X

Manuel Rodriguez

11:01

The graphics driver Bumblebee is part of an operating system and it's setup has to be modeled in a formal ontology. That means, somewhere in the expert database a list of installed and not installed software is given together with the dependencies. Is anybody familiar with expert systems for computer configuration? If not, a small introduction into the basics is possible with the help of Google Scholar.

Byte Commander

11:41

Hmm, first attempt failed

Rinzwind

0

Q: Best Download manager for Ubuntu?

What is The Best Download manager for Ubuntu ?

software-recommendation

wrong cllose vote. Should be duped

terdon

12:09

@Rinzwind Not sure it's worth it. The dupe target is also a bad question.

dessert

lol

why is there set and shopt when both do the same thing?

32

A: Set and Shopt - Why Two?

As far as I know, the set -o options are the ones that are inherited from other Bourne-style shells (mostly ksh), and the shopt options are the ones that are specific to bash. There's no logic that I know of.

> It was probably the idea at the start (that SHELLOPTS would be the standard ones, and BASHOPTS the bash specific ones), but that got lost along the way, and now it just ends up being annoying and a UI design fiasco.

impossible to fix without massively breaking workflows – it’s a programmer’s nightmare :)

damadam

does a programmer want to fix something like that? not sure :O

dessert

Ugh! That is even more confusing. My brain wants to associate shopt with $ SHELLOPTS rather than $ BASHOPTS. — Bruno Bronosky Mar 22 '16 at 16:17

lmao, my brain does the same

terdon

12:27

But it is SHELLOPTS

$ help shopt | head -n2
shopt: shopt [-pqsu] [-o] [optname ...]
    Set and unset shell options.

Granted, it's a bash thing, but bash is a shell so...

dessert

@terdon so this answer is wrong?

19

A: Set and Shopt - Why Two?

The difference is in the changed environment variable used by bash. Setting with the set command results in $SHELLOPTS. Setting with the shopt command results in $BASHOPTS.

terdon

Oooooh!

You meant the env variable names! Duh!

No, it isn't wrong.

damadam

How to burn a programmer brain, Volume 1

dessert

just hilarious, isn’t it? :D

Byte Commander

14:10

Wtf, performance of glxgears with bumblebee running on my nvidia card is significantly worse than directly on the intel integrated graphics. How can that be?

Thomas Ward

@ByteCommander nVidia

Byte Commander

$ vblank_mode=0 glxgears -info | grep -v EXTENSIONS
ATTENTION: default value of option vblank_mode overridden by environment.
GL_RENDERER   = Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2)
GL_VERSION    = 3.0 Mesa 18.0.5
GL_VENDOR     = Intel Open Source Technology Center
VisualID 314, 0x13a
37178 frames in 5.0 seconds = 7435.448 FPS
37936 frames in 5.0 seconds = 7587.151 FPS

~$ vblank_mode=0 PRIMUS_SYNC=1 primusrun glxgears -info | grep -v EXTENSIONS
ATTENTION: default value of option vblank_mode overridden by environment.

Basically intel gives 10x the framerate

However, nvidia only without bumblebee was still faster IIRC.

Strange is too that if running on intel, glxgears causes my laptop to make a weird very high frequency noise

damadam

14:30

+1 @ThomasWard

Scorpion

14:42

0

Q: Enable the touchscreen of a Mediacom WinPad W700

I' m trying to use this question as a guide but my case is different .I' m using Lubuntu 18.04. The commands sudo acpidump | grep -C3 ELAN and dmesg | grep elan get nothing (there isn' t any ELAN). The command sudo dmesg | grep i2c gets: [ 3.211266] i2c /dev entries driver [ 3.328881] i2c_...

kernel touchscreen

Rinzwind

This smells like trouble askubuntu.com/questions/1067898/how-to-remove-i-from-ubuntu

terdon

Ouch, yes

Rinzwind

[^$I$^]
so that is a regex? not $, I not $ ?

or beginning with a $ than an I?

damn that is hard to search on on google :X

ah well. time to head home and prepare to take on The Queens' Eyes

damadam

14:59

insane, 398% cpu, there is a problem with top, or his computer is a super-hero :D

Rinzwind

Nioh - The Queen's Eyes Epilogue Mission Walkthrough [HD 1080P/60FPS]

►

@damadam does top not add cpu's? so 4x100%(?)

damadam

398% / 400%, do you really think there is enough for top + linux daemon? for me, no

time to go back to home :D

Rinzwind

@Terrance :-D

Ubuntu Questions on U&L

15:23

0

Q: Mount an external write-protected disk with bad geometry on Ubuntu Server 16.04

I have this problem: I can not mount an external usb disk formatted in ext3, where the blocks exceed the disk size, bad geometry message. Unfortunately I can not modify the disk doing the resize and I wanted to know if there is a possibility to mount it just to read some files. Here the syslog:...

ubuntu mount usb

PerlDuck

@Rinzwind You can try symbolhound.com as a search engine for special characters. Spoiler: No results for [^$I$^]. Btw, if it were a regex and no interpolation is in action then it would mean: one character that is neither a $, nor an I, nor a ^.

@damadam Some programs show 400% when you have 4 CPUs (cores) fully busy. Dunno how top behaves, though, as I usually use htop.

Ubuntu Questions on U&L

15:38

0

Q: VMWare Clone Ubuntu 16.04 vs 18.04 Network problem

I have 2 templates. an Ubuntu 16.04 created long time ago and a 18.04 who is just an upgrade of the 16.04. I cannot use my new template because every time the network configuration is broken. We use the VMXNET 3 Adapter. We have a custom gateway, dns and domain configured, ens160. I didn't crea...

ubuntu networking vmware

cl-netbox

16:16

@ByteCommander yes : sudo apt purge bumblebee :D :D :D

Byte Commander

well, it wasn't as bad as I thought

seems to work now, and despite simple benchmarks like glxgears being slower, complex stuff like furmark shows better performance in bumblebee than direct intel

of course when it comes to ridiculous frame rates like you can get them with glxgears, direct rendering is faster because of the overhead to copy the frames over from the internal to the graphics buffer

Fabby

@Rinzwind What the wizard said!

cl-netbox

@ByteCommander I switched to using the original NVIDIA drivers some time ago, the overall performance is much better since ... on my machine at least. :)

Fabby

@ByteCommander a speck of dust or a feather stuck in your ventilator.

Try a vacuum cleaner first

Byte Commander

no, it's not a fan

Fabby

16:21

@cl-netbox o/

Byte Commander

must be some electronics noise

Fabby

Weird, but not impossible.

cl-netbox

Hey @Fabby ! :) Good afternoon / evening to you ! :)

Byte Commander

it starts and stops instantly when I run/cancel the command, and it does not sound like a fan. Much higher frequency

Ubuntu Questions on U&L

0

Q: Why does logrotate generate empty log files when using two wildcards in log path?

Logrotate will rotate the logs but when it renames the file to .1 (and then subsequently to .2.gz, .3.gz, etc) the files are empty. I've tracked this down to the path specified in the log config file: /hosts/*/log/*.log If I change the above line to one specific directory such as: /hosts/webs...

ubuntu logrotate

Byte Commander

16:23

@cl-netbox I'm on 394 from the graphics-drivers PPA now, but as I mostly just browse the web etc, most of the time I don't need a GPU and rather want to save battery

Fabby

@cl-netbox Cannot eat anything any more till colonoscopy tomorrow...

cl-netbox

@ByteCommander Maybe you want to give those drivers a try : nvidia.com/Download/driverResults.aspx/137211/en-us Here is the documentation : us.download.nvidia.com/XFree86/Linux-x86/396.54/README/… :)

Fabby

As I've never had any, started reading the instructions at the time the nurses told me to start the treatment...

First thing I noticed was "Drei Tage vor der Untersuchunch"...

cl-netbox

@Fabby I wish you good luck my friend ! :)

Fabby

Oops... I didn't even get the instructions back then!

BRB. RL calling

Byte Commander

16:26

@cl-netbox that docs is a 404

also I'm leaving this now as it is, not going to try directly installing a different driver from the site now

cl-netbox

@ByteCommander sorry ... us.download.nvidia.com/XFree86/Linux-x86_64/396.54/README/… that is a mistake on the NVIDIA website ... it is always "x86_64" ! :)

Byte Commander

it seems to work well enough for now

yormen

hi

am having issue starting one of my service

it keeps stay activating for long

any suggestions??

Fabby

@ByteCommander CloneZilla backup first and only then try CL-netbox's suggestions.

@yormen Do you have a link to a question here on this site?

yormen

nah i dont

Fabby

16:34

Well try posting one to collect your thoughts, because what you've given us here is not even quicksand to build an answer on...

;-) :-) ;-)

cl-netbox

@ByteCommander Boot with nvidia-drm.modeset=1 ... that enables Direct Rendering Manager (PRIME synchronization) I wrote an answer about it here some time ago -> askubuntu.com/questions/1048274/… ... :)

@Fabby backups are generally a good idea ... but do you wanna say that my suggestions break other user's systems ? hope not ... hahaha :D :D :D

Fabby

@cl-netbox No!

cl-netbox

@Fabby :D

Fabby

:P ;-) :P

No food since late breakfast until I come back from colonoscopy tomorrow.

(and the upstairs neighbours just asked me if I was interested in pizza)

Hrmpf...

I get grumpy when I can't have a hot meal...

cl-netbox

@Fabby I'm feeling with you ... :(

Fabby

16:44

I'm truly like a 5 YO: they get grumpy too when they can't eat.

:D :D :D

cl-netbox

@Fabby I can understand that so much ... :)

Fabby

:-) Becase you're a 5 YO too!

Oh no! you're 6 now!

:D :D :D ;-) ;-) ;-)

cl-netbox

@Fabby hahaha :D :D :D

Ubuntu Questions on U&L

17:39

0

Q: Unable to boot Ubuntu from grub

I installed Ubuntu on a PC that had another Linux distribution already installed. When installing Ubuntu, I chose to delete all data that was written before in the disk, so it probably deleted the other distribution. The problem is that when I restarted the computer the grub screen appeared, wic...

ubuntu grub

cl-netbox

@ByteCommander Might be interesting for you -> phoronix.com/…

Goodbye everybody ... see you next time around. :)

Fabby

Gute Nacht!

Ubuntu Questions on U&L

17:54

0

Q: i3wm [official ubuntu version] screen freezes randomly when window is fullscreen

I'm using compton for compositing with this config in i3wm in Ubuntu 18.04: # _ # ___ ___ _ __ ___ _ __ | |_ ___ _ __ # / __/ _ \| '_ ` _ \| '_ \| __/ _ \| '_ \ # | (__ (_) | | | | | | |_) | |_ (_) | | | | # \___\___/|_| |_| |_| .__/ \__\___/|_| |_| # ...

ubuntu freeze crash

dessert

18:53

Wow, these “new contributor” warnings are pervasive – just two questions and they already bug me. So not only does the new design massively waste space by adding empty areas everywhere, now it begins to fill the remaining with redundant, superfluous information.

Aug 9 at 16:29, by Rinzwind

I so do not like this new theme :(

dessert

19:05

How ignorant and blind do they think we are?

TheWanderer

19:23

have you met a human?

5

Seth

21:17

@dessert very.

There's a lot of stupid politics surrounding most recent changes.

$('<style type="text/css">.new-contributor-indicator {display: none;}</style>')
    .appendTo($('head'));

userscript to remove them.

18

Q: Add option to hide contributor indicator completely

I found this question: Add a little 'x' so users can close the new user contributor indicator. But it's about a specific user question. This indicator only distracts attention from the question itself. So, would be great if we could hide/disable this indicator completely. For example, you can ad...