Ask Ubuntu General Room

Nathan Osman

00:00

@SergiyKolodyazhnyy Remember that Visual Studio and the command-line tools are different beasts altogether. I don't use Visual Studio but the command-line tools (the compiler, linker, nmake, etc.) are really fast and work well enough once you get the hang of them.

Open your Start Menu and look for something like this:

(Pardon the ugly start menu. Thanks, Win2012.)

For example, to build NitroShare in Visual Studio entirely from the command-line, you'd do this:

cmake -G"NMake Makefiles" .
nmake

Qt includes pre-built libraries and headers for VS2013 and VS2015, so that's easy to use.

CMake does have the option to generate VS project files that you can open in the IDE but I don't use those.

Sergiy Kolodyazhnyy

00:24

@NathanOsman That runs with debugging, they've changed it to run without debugging as ctrl+f5

Nathan Osman

Ah.

Sergiy Kolodyazhnyy

I'm chiller now though . . . VS is not my thing i guess. Or just any IDE altogether

anyway. Working on report for that FSM.Turning it in today

pity i didn't get to implement pedestrian timer. That'll cost me some points from the grade

TheWanderer

00:44

GUH

I'm still salty over that review

Nathan Osman

@SergiyKolodyazhnyy I think you might change your mind if you tried Qt Creator.

Despite its name, it works very well for non-Qt projects.

TheWanderer

...

So he goes to great lengths to update his review to prevent it from being taken down, but it looks like he doesn't actually every follow up...

Maybe I should start a Google+ Page....

Android Dev

01:12

@NathanOsman @TheWanderer We can close this because OP is trying to build a custom kernel, right? askubuntu.com/questions/907200/undefined-reference-to-sys-hello

Nathan Osman

It's certainly not Ubuntu specific.

Maybe U&L?

Sergiy Kolodyazhnyy

@NathanOsman I will eventually. I actually have it installed, I just need a proper Qt project

Seth

@AndroidDev please. it's never about "can we close this" but only "should we close this".

closing is not an end goal.

Sergiy Kolodyazhnyy

A shiz, I've recoded the demo of my traffic FSM, but forgot to cover the sticker with my address on the board.

Nathan Osman

Pixelate filter in Kdenlive to the rescue?

Sergiy Kolodyazhnyy

01:22

don't have that and don't have time

WinEunuuchs2Unix

Uggh my electric shaver died tonight.... now I have to buy a new one and comparison shopping of on-line features, prices and customer reviews is as complicated as buying a new laptop :(

Journeyman Geek

Just buy a lawnmover.

WinEunuuchs2Unix

My stubble isn't that long... but I'll pass that on to tarzan if I see him :P

TheWanderer

@Seth orly

Seth

really.

TheWanderer

01:32

orly

Nathan Osman

Everybody is hung up over closing but... has anyone asked why this fellow is trying to add a syscall to the kernel? Unless he is thinking of becoming a core developer, it is almost certain he is doing something wrong.

:P

TheWanderer

orly

Nathan Osman

hue

TheXed

Today I experimented with headshots....

photographing them....

Nathan Osman

Are we talking digital photography or FPS?

@TheXed Thanks for clarifying that.

TheXed

01:35

@NathanOsman lol

any how...this is what I came up with...

TheWanderer

y tho

TheXed

@TheWanderer it is a head shot, no?

Nathan Osman

Ostensibly, yes.

TheXed

Okay it is a joke...I am kidding...

but...this picture is pretty awesome:

Nathan Osman

Reminds me too much of Shog:

TheXed

01:43

Nathan Osman

Okay, that is pretty.

TheXed

Have I redeemed myself then?

Nathan Osman

Sure.

TheWanderer

no

never

Seth

02:00

gonna give you up

TheXed

@TheWanderer I hate you.

TheWanderer

:3

RobotHumans

02:27

:) whipped a problem that's been killing me for 2 weeks. first day i could see the source instead of writing to stale api docs and beating my head in to a wall - it was fixed.

TheXed

@RobotHumans I hope the wall is okay?

RobotHumans

@TheXed The wall is fine. I need a bandaid.

TheXed

@RobotHumans did you stain the wall? that is what I am concerned about...your head will heal...

Android Dev

@NathanOsman @TheWanderer Mmmkay, that's not so great, but who would be stupid enough to install that anyway?

RobotHumans

@TheXed Nah. We have a steel beam here with a little circle and the words "When something starts making your head hurt, apply pressure here"

TheXed

02:32

@AndroidDev isn't that basically every app in the app store?

@RobotHumans oh good call...

Android Dev

NAA: askubuntu.com/a/907211/518562

@TheXed I sure never install apps that want ridiculous permissions. And also, location services can be disabled.

TheXed

@AndroidDev location services, but "911" is always watching you...

Android Dev

@TheXed But installing and an app called "System Update"? I mean seriously?

0

Q: Encrypted Ubuntu

Well... I installed Ubuntu 16.04 LTS in new Lenovo laptop. And thought it might be good idea to encrypt the whole hard drive. It wasn't good idea. And also thought it would be easy to take off if I would like to do so. I learned that it isn't :D Is it possible to reinstall Ubuntu or some other L...

Seriously? You do know how to use Google, don't you? --^

Journeyman Geek

Does anyone?

RobotHumans

o/ @JourneymanGeek

Journeyman Geek

02:47

\o

Nathan Osman

I just had to be brilliant here and play with xrandr.

Next thing I knew, colors everywhere.

Couldn't see a thing.

Had to log in via SSH on another device.

Bottom line: leave xrandr alone unless you are writing a display driver.

Nathan Osman

03:28

LOL.

I just saw this in the output of a tool I was using:

Nonfatal Error : More than 10 date fields in Exif.  This is nuts

TheXed

lol...

Sergiy Kolodyazhnyy

03:43

There's a petition to make KDE Ubuntu's default desktop

That might gain some traction, though I'd say go Budgie !

RobotHumans

04:04

@NathanOsman love it, but no. I needed to screw with xrandr on a triple headed programming rig at one point.

Has @Mateo turned in to a creeper not here guy now? yep. not available in ping history.

Nathan Osman

Well, I said that mostly as a joke. I had in mind the type of person who is thinking "hey, cool! buttons and knobs to make the screen do weird things!"

Ubuntu Questions on U&L

0

Q: Trouble getting ldm volumes to mount in Ubuntu

I have set up 2 4TB drives in raid 1 in Windows 7 that I am trying to get working in Ubuntu 16.04LTS. I have run sudo ldmtool create all but it hangs. It seems to try and make something in /dev/mapper, but I am having trouble getting it to mount. The disks do show up in blkid after running 'ldmt...

ubuntu raid

Sergiy Kolodyazhnyy

04:26

gosh, I'm so glad that damn presentation is over

i hate public speaking

i become all nervous and regress to "totally Russian guy" accent

Nathan Osman

04:39

@SergiyKolodyazhnyy I'm sure you did fine.

Anwar

@SergiyKolodyazhnyy Same here. Maybe a lot extreme

good morning :)

Zanna

No-repro I think - what they said they already tried in the question mysteriously worked on the second go? And no hardware details!

@SergiyKolodyazhnyy omg I get so nervous

Sergiy Kolodyazhnyy

I sure do hope I did fine and professor understood what I was shooting for.

The comforting thought is that only one group got it working 100% through

All other groups , including my group ( which is just me working alone) had it partially working.

Zanna

Should we close as dupe?

@SergiyKolodyazhnyy what were you making?

Sergiy Kolodyazhnyy

04:56

@Zanna Traffic control system. Basically simulates a simple intersection of main street and cross street, where we have sensors for traffic, traffic that wants to turn left, and pedestrians. I figured out how to control traffic all ways, but because there was no time, i couldn't make the controls for pedestrian timer ( which is quite simple actually and I could have implemented it)

I have a video of this on youtube, but that video shows the sticker with my name and address, so I'll probably delete it eventually

Actually, set it to private now. I'll upload a demo of that later when my brain actually cools off

Nathan Osman

@SergiyKolodyazhnyy *cough* Kdenlive *cough* - it even has a filter that tracks an item as you move the camera. It couldn't be simpler.

Or if even that is too much work, you could always send it to me :D

Sergiy Kolodyazhnyy

^_^' yeah, I'll give it a go. I need to start learning video editing at some point. But probably I'll need your help a few times.

Nathan Osman

That's what I'm here for :D

Sergiy Kolodyazhnyy

Now that I think of this, for a lot of the stuff that I'm doing, I need to learn image and video editing.

Demos of the projects, of the indicators/scripts, icons for the said indicators

There's so much to cover

Zanna

05:15

@SergiyKolodyazhnyy sounds super complex

Sergiy Kolodyazhnyy

It was quite complex. Most of the projects that you see online - they only cycle from green, to yellow, to red, and back around. In our project, not only we had to keep track of sensors for different things, but also time things properly. And it's written in Verilog, which is hardware description language, so it's not like C or Python

There's no sleep function, so i had to implement a counter that uses internal 50MHz clock to count a second every 50 million ticks of the clock

What's cool though is that the design and behavior of the resulting system should be really close to what the real traffic system does

Anwar

why don't you use python or other high level language?

apt-get is soo stupid compared to aptitude. It cannot sensibly downgrade

Zanna

05:35

What the hell?

Sergiy Kolodyazhnyy

@Anwar Because the class is specifically about Verilog Hardware Description Language. And we're using it to program a specific type of board

Nathan Osman

Just. Don't.

If it ain't broke, don't fix it.

2

Next, we'll be having visitors asking how to remove libc6...

"Well, yes, you can remove it but you will break nearly every binary on your entire system."

Rinzwind

@Zanna nothing wrong with that

Totally answers the question.

Nathan Osman

(* but not escapefromlibc!)

Anwar

@SergiyKolodyazhnyy Oh. got it. I never used verilog, but saw some examples of it.

@Rinzwind There should be a warning at least imo.

Sergiy Kolodyazhnyy

05:39

I'll probably come back to this project later and finalize it. Verilog is pretty interesting. Tough,but interesting, and it's very valuable if you're electrical engineer, especially working with FPGA chips and other embedded systems.

Maybe I'll even play around with interfacing that board to some of the other boards that I've got

Rinzwind

@Anwar nah. There is enough of a warning there :P

Jacob Vlijm

Does anyone have a clue what this person means? askubuntu.com/q/906892 What he claims cannot be true (launcher shortcuts appear in the application menu)

Anwar

@Rinzwind I've just seen those. I'd agree with you now :D

No ppa was allowing me to install latest adwaita icon which is 3.24 on 16.04. So I extracted the debs :D.

@JacobVlijm He wanted the profile switching menu appear on right click

Nathan Osman

@WinEunuuchs2Unix sounds like Edmonton won.

Jacob Vlijm

05:55

@Anwar yeah, but this: The list does appear when you go to the menu line and select File -> Open Terminal is simply a lie. Launcher items do not appear in the application's menu.

Anwar

Those are not only launcher items, but also profiles. Those appear in File -> Open terminal

I think I understood his problem.

Jacob Vlijm

@Anwar Ok, I'll retract my vote.

Anwar

I think the answer is not possible without recompile

Sergiy Kolodyazhnyy

Looks like somebody knows SQL in chat

Anwar

06:13

@JacobVlijm that maybe ^

bbl

Zanna

06:47

grumpy editor

Zanna

07:01

X-Y problem

so many views but I'm sure it's misguided...

the problem itself is trivial but it won't do anything useful

muru

Bit confused by the discussion here: askubuntu.com/a/907266/158442 Anybody free to lend a third perspective?

Zanna

I think he is just not getting it

hahaha

user136984

08:02

I hope this doesn't get anywhere... I can't stand KDE! It will be good one day, but currently there are just too many design and settings issues... It's the kind of DE that is only for certain people who can handle it, you could say that that is true for any DE, but I would say more so for this one, so making it default wouldn't be good I don't think.

Nathan Osman

ಠ_ಠ

user136984

I don't know, just too many settings...

Nathan Osman

That's better than not enough settings.

If you don't like a setting, don't use it!

Zanna

is there such a thing?

user136984

But there are overwhelmingly too many... You can't even find what you are looking for.

user136984

08:05

I think that KDE is quite unique in some ways, and if you like that about it, then it's fine, but most don't.

user136984

I do agree that the rest of the DEs could learn a lot from KDE, but just some things are still like Xubuntu was in 12.04 like the bottom bar and how you interact with it.

user136984

The last time I looked at it was probably 16.04... But still, I don't imagine that it will change that much before 18.04.

user136984

I guess maybe I should try it out again.

user136984

Even GNOME used to look terrible. :D

edwinksl

09:51

gnome is usable for adding a couple of extensions

Rinzwind

gnome 3 shell extensions suck :+)

fossfreedom

10:09

@Rinzwind ... controversial :p waiting for all the gnome-shell fanbois to jump on you!

Takkat

10:31

GNOME shell is always 1 click too many for me.

Anwar

10:44

@Zanna was OP looking for kernel parameters or grub parameters? It's kinda unclear. I think you can also refer this page on your answer for grub part. It looks exhaustive enough

@muru don't see anything there. but I asked a question :)

Rinzwind

@fossfreedom things that crash suck.

Anwar

@SmokeDetector which one?

fossfreedom

false alarm

Zanna

11:04

@Anwar it got deleted :)

@Anwar I thought kernel params, but thanks for the manual link, I added it :)

TheWanderer

11:29

Ubuntu Questions on U&L

11:58

0

Q: How to remove the thumbnail frame in Nautilus?

I mean the gray border around thumbnails in icon view. The file thumbnail_frame.png is not present in /usr/share/pixmaps/, not even a nautilus folder.

ubuntu gnome nautilus thumbnails

Ubuntu Questions on U&L

12:11

0

Q: nginx: [emerg] could not build referer_hash, you should increase referer_hash_bucket_size: 64

Good Day, I am a novice to programming and i am trying to run the livehelperchat open source code(https://livehelperchat.com/) in my ubuntu-16.04 instance and I have Nginx as default server listening port 80 and also php 5.6 running. my /var/www/html/sites-enabled/default server { ...

ubuntu php nginx

Rinzwind

12:44

@NathanOsman so "aa" after z. So after that an animal with "ab" >:)

Sergiy Kolodyazhnyy

13:09

Good meowning guys

Nathan Osman

14:50

Hi all.

It's...... Friday!

(Cue annoying music.)

terdon

@NathanOsman Will you ever stop doing that?

Let that awful "song" languish in the obscurity it so richly deserves!

I am beginning to think you actually like it.

Nathan Osman

Good grief, no.

terdon

@NathanOsman Methinks the lady doth protest too much.

Or the gentleman, as the case may be.

Nathan Osman

Hey, I wasn't the one who starred the video the last time it was posted here.

terdon

@NathanOsman No, but you were the one who posted it. Twice!

That's even worse than starring it! :P

Nathan Osman

15:04

To be fair, it was the death metal version the second time.

:D

Harsha

Does anyone have experience building a game

maybe in Android.

terdon

15:33

@NathanOsman Notice I said video :P

SmokeDetector

16:44

[ SmokeDetector | MS ] Few unique characters in answer, repeating words in answer: What should my MAC address be? (now shows 00:00:00:00:00:00) by Bob on askubuntu.com

Seth

@SmokeDetector MACv6?

KasiyA

17:05

Hi

How to get real file size which tar-ed without untaring?

Possible?

Thomas Ward

um, what?

KasiyA

I tar a text file and I need to get its size which is in tar but without unzipping it

terdon

@KasiyA tar or tar+gz?

KasiyA

17:25

tar.gz

With tar -czf myfile.tar.gz my file.txt

Now I want to know what was myfile.txt size but don't want to unzip it

terdon

@KasiyA There's no way to access a compressed archive without decompressing it.

And remember that the size in bytes listed for the file in the archive won't necessarily be the same as the amount of disk space the file will occupy which will vary depending on your file system. A little.

KasiyA

17:48

Thank you

Takkat

@KasiyA gzip -l myfile.tar.gz?

Rinzwind

gnome 3 sucks!

7

Jacob Vlijm

Wimzy!

Rinzwind

there star that :P

Jacob Vlijm

Yes it does

Rinzwind

17:55

vlijmy!

Takkat

it does

Rinzwind

if it aint broke dont fix it it says on the starwall

Jacob Vlijm

Taxi!

Takkat

lol

Rinzwind

THEN WHY ISNT ANYONE FIXING GNOME 3

Takkat

17:56

because it's the GNOME team that has their hands on GNOME?

Rinzwind

so this weekend a reinstall

kde or budgie?

Jacob Vlijm

Budgie

Takkat

Budgie <3

Rinzwind

you are bias

Jacob Vlijm

I will probably exchange Unity for Budgie completely

Rinzwind

17:57

compared to U7 how much changing does Budgie need?

Takkat

I'll wait how 18.04 will be like... until then Unity

Rinzwind

that's too late

Jacob Vlijm

...getting acquainted, going very well

Rinzwind

how well does MPV compare to smplayer?

Takkat

One would be enough for me.

Rinzwind

17:59

1 is for Bavarians

1 for Austria

1 fo Swiss

Takkat

another for Ripuanians

Jacob Vlijm

There are many Germans here :)

The personal approach

Rinzwind

Not from Gelsenkirchen >:-D

Takkat

found another.

terdon

18:23

@Rinzwind Why is nobody considering cinnamon? It's a great DE. Although I'm writing this from the KDE I'm testing this week.

Rinzwind

I dont like spices :P

Ubuntu Questions on U&L

18:58

0

Q: Mouse clicks not registering on *buntu

I recently had trouble with my trackpad mouse clicks not registering in Ubuntu. I tried a known good wireless mouse(It works on my windows machine) to no avail, I then looked around on the internet for a while and didn't any fixes. So I decided to backup my data and do a fresh install of Ubuntu a...

linux ubuntu fedora kali-linux mouse

Nathan Osman

19:11

@Rinzwind you should try KDE.

Really, it's quite nice.

Kaz Wolfe

Nathan Osman

@KazWolfe he's asking for an opinion, not empirical evidence.

Fabby

20:03

Daily vote limit reached Time to hit the chat...

Byte Commander

o/

Jacob Vlijm

@Fabby time to hit the cat :)

2

Kaz Wolfe

@JacobVlijm Do not hit cats.

People? Sure. Hit them as much as you want. Cats? No.

Jacob Vlijm

Self defence in my case :)

terdon

Never hit anything with claws and a brain the size of a large walnut.

Jacob Vlijm

20:10

:) no, she is sweet, and kind of old.

Kaz Wolfe

our office needs a new pet.

Byte Commander

Uhm, running badblocks on an SSD is stupid, right?

Kaz Wolfe

very.

Byte Commander

Good.

Fabby

@JacobVlijm Starred! (I don't like cats)

@JacobVlijm Not self-defense! Keep her away from walking on my shutdown button!

:D :D :D

Kaz Wolfe

20:13

well, @ByteCommander, as with most things, the answer is "it depends" on how you do it. But in most cases, badblocks should not be run on SSDs.

Fabby

@terdon I've got a pic of me petting a cheetah!

terdon

awww :)

Jacob Vlijm

@Fabby she regularly walks over my laptop keyboard actually. Nice an warm she thinks.

terdon

@KazWolfe Why?

Kaz Wolfe

@terdon badblocks reads/writes to the drive very frequently.

unnecessary wear, mostly.

terdon

20:15

Ah.

Fabby

@terdon because of quantum physics...

terdon

I thought SSDs were much improved in that respect.

Fabby

::-)

@terdon they've worsened...

terdon

@Fabby Everything is because of quantum physics. That's cheating.

@Fabby Really?

Kaz Wolfe

@terdon They're better than they were (assuming we're comparing average consumer-available chips for each point in time), but it's still good to not put things under unnecessary stress.

Fabby

20:15

SLC = good
MLC = bad
TLC = very bad...

@terdon SSD technology is based on quantum physics

Jacob Vlijm

My cat is in a solid state as well btw. And full of bad blocks.

terdon

@JacobVlijm shouldn't feed her so often, man.

Byte Commander

@KazWolfe But it has no use, right? You can not mark a block as bad in the file system, as the SSD's internal controller will remap the addresses at will for wear levelling and whatnot.

@JacobVlijm Did you feed it bricks?

Kaz Wolfe

@ByteCommander more or less, yeah. The SSD will take care of it.

terdon

@KazWolfe Sounds reasonable.

Kaz Wolfe

20:18

That said, you can always dd to /dev/null, because that will point out errors to the drive. Reads are nowhere near as destructive to SSDs as writes.

Fabby

Kaz Wolfe

But no, it's more or less useless to make the filesystem do bad block management now. Period. Even on magnetic devices. badblocks is more or less dead now.

Jacob Vlijm

@terdon Actually the pet doctor said she grew fat by eating too many mice, which she does.

...always offering me a piece of it :)

Fabby

@KazWolfe Starred! Good advice

Kaz Wolfe

There are very rare specific cases where you might want to use badblocks and filesystem-level block management, but the average home user will not need to run that command ever.

Fabby

20:24

The only piece of commercial software I still use is better then badblocks...

terdon

How about SMART tests?

Fabby

SpinRite

Kaz Wolfe

@terdon What about them?

Fabby

@terdon Google did a test a few years ago...

It doesn't mean anything on average, but in some cases it helps...

terdon

@KazWolfe Any reason to use them or reason not to when it comes to SSDs? I'm thinking of things like smartctl. Does that just read a db or does it stress the disk (you might have realized by now that I know next to nothing about this sort of thing).

Kaz Wolfe

20:25

In terms of how safe it is for SSDs, pretty safe. You can usually get everything you need from a quick test. Full tests are usually unnecessary.

Fabby

@terdon Meaning HDDs still die without showing anything in their SMART data

Kaz Wolfe

Quick tests only pull metadata/attributes from the controller, and maybe run a couple small tests.

terdon

:36867704 chat.stackexchange.com/transcript/201?m=15247176#15247176

Apr 29 '14 at 23:31, by terdon

S.M.A.R.T. is the new S.T.U.P.I.D.

Kaz Wolfe

SMART tests are non-destructive, though. I think. Even long ones.

Jacob Vlijm

@terdon Haha, I really didn't know!

terdon

20:27

@Fabby True

@JacobVlijm Great minds :)

Jacob Vlijm

:)

@Fabby Lost several HDD's over time, always a sudden death, they seemed perfectly fine before.

Kaz Wolfe

SMART tests, in other words, are safe. They (as pointed out by others) are not a 100% for knowing if a drive is working or not, only a data point to make an intelligent decision.

(things like badblock counts, for example)

put it this way... SMART tests are more for engineers to determine drive information than they are for end-users to determine drive health.

terdon

I have had at least one case where the smart output suggested imminent failure and I went and replaced the drive. Dunno if it would have actually failed, of course.

Kaz Wolfe

likely, yes.

SMART tests that return "imminent failure" are a very short list of tests that can actually mean big problems.

terdon

20:43

So, if I get this right, if I see something bad in the smart tests I should be worried, but if I don't that doesn't necessarily mean there's nothing to worry about.

Kaz Wolfe

right

terdon

gotcha, thanks

Kaz Wolfe

Typically, though, drives that pass SMART are usually good to go, but keep a backup anyways.

terdon

20:57

Hey, I said I don't know much about hard drives, not that I'm a complete moron! :P

Thomas Ward

@terdon BACKUPS ARE IMPORTANT

remember when you accidentally pulled that stunt and therefore someone didn't have a backup and you screwed em over?

terdon

Hey, I said I don't know much about hard drives, not that I'm a complete moron! :P

Thomas Ward

@terdon So you don't remember that event.

don't make me find the link :p

terdon

@ThomasWard You mean when I pulled the first terdon?

As I recall that was a new install and he didn't actually have anything to lose in $HOME. Luckily.

Transcript for