Ask Ubuntu General Room - 2019-02-24

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Ubuntu Questions on U&L

12:12 AM

0

Q: When boot into a live Lubuntu from a bootable flash drive, what filesystems on the disk are mounted automatically?

Assume a computer has Lubuntu installed on its disk. Booting into a live Lubuntu from a bootable flash drive is often a way to access filesystems on the disk that are not mounted. When boot into a live Lubuntu from a bootable flash drive, what filesystems on the disk are mounted automatically? ...

ubuntu filesystems mount live-usb

2 hours later…

Ubuntu Questions on U&L

1:45 AM

0

Q: No Wi-Fi adapter found after installing Ubuntu on Toshiba Satellite L55Dt

I got some ideas by checking this other question on the forum here: Ubuntu | No WiFi Adapter found So I go to the shell command prompt, type in lspci -knn | grep Net -A3 and I get: '05:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM43 802.11 1b/g/n [14e4:4365] (rev 01) 'Subsys...

ubuntu wifi drivers

6 hours later…

Ubuntu Questions on U&L

7:47 AM

-1

Q: Unable to get out from crontab command

I am using a fresh installation of Ubuntu 16.04 LTS. Whenever I type: sudo crontab -e OR sudo -u www-data crontab -e The command prints some number and nothing else. And whatever you do to try to exit from it, by any means, you are not able to do. Questions First of all, How to exit from...

linux ubuntu cron

7 hours later…

Ubuntu Questions on U&L

2:53 PM

0

Q: Wi-Fi Adapter Not found / Wi-Fi is disabled

My Wi-Fi on Ubuntu system recently stopped working. When I hover over toolbar it says: "Wi-Fi is disabled", in Networks app it says: "Wi-Fi adapter not found". I dual-boot with Windows and on Windows it works like a charm. Wired connection also works well. I have read topics related to this issue...

2 hours later…

Ubuntu Questions on U&L

4:43 PM

0

Q: No wifi adapter found [dell precision 5530 & ubuntu]

on my laptop I have troubles with wireless network sice I installed linux. Sometimes when I started laptop (1 of 3) my wireless card seems doesn't work. Wifi option missing when I click on toolbar, and in settings in wifi and bluetooth section I got error No adapter found I also tried chec...

ubuntu wifi network-interface bluetooth

5:15 PM

I can understand a Mint question. But Slackware? :D

hello vidario

@vidarlo hello

hello

@heynnema guess you

yes

're looking for an elaboration? :)

sure. Did you also notice that I added text about group dialout to my answer?

5:23 PM

well, if you start with the question, he says that he restarts gpsd as root, and then it works. The question does not mention modifying firewall rules to get it to work

opening that port may expose gpsd to the network (or even internet with ipv6)

so I see no need to mention firewall at all, and it should not be done unless actually needed

but, at least, other clients on the network can access gpsd via that open port, yes?

but that's not the question he's asking

maybe true... I just documented what I had to do to get it all working... but I'm certainly no expert here...

the relevant thing is to understand when traffic is local and when it's not. Local traffic is explicitly allowed by ufw's standard configuration.

and the gps device is considered local?

5:27 PM

yes, when it's on the same host (which is the default host used for gps clients)

ok, later I'll remove the rule, and see if the local gps clients still work.

but the rule would be required for other clients on the local network to access, yes?

yes

that's clear enough

in addition you'd probably have to tell gpsd to listen to all interfaces

how?

5:29 PM

`gpsd -G`: This flag causes gpsd to listen on all addresses (INADDR_ANY)
rather than just the loop back (INADDR_LOOPBACK) address. For the
sake of privacy and security, TPV information is now private to the
local machine until the user makes an effort to expose this to the
world.

in /etc/default/gpsd I articulate DEVICE=/dev/ttyUSB0 (previously tty ACM0), does any of what you describe change this articulation?

ttyACM0

no, that's the device to listen to

is there a way to not have to specify ttyUSB0... 'cause what if it pops up at USB1?

leave device blank. I believe gpsd will try all attached serial devices.

I tried that about 10 mins ago, and gpsd didn't find it... but maybe I actually have to reboot, as ttyUSB0 and ttyUSB1 were both there, owned by dialout

5:35 PM

In general gpsd is rather forgiving. Or as ESR describes it; minimal fuzz

ESR?

and if you fiddle with gpsd, his pages about it is essential

Eric S. Raymond. Author of gpsd

good. I'll go and read it. Thanks for your articulation!

no problem :)

Ubuntu Questions on U&L

0

Q: Does docker guest mount harddisk device to a file and not a directory?

I have run the following docker command to create an instance of an Ubuntu image... docker run -it ubuntu bash when I issue a mount command I see the following... root@ca13e87462b5:/# mount overlay on / type overlay (rw,relatime,lowerdir=/var/lib/docker/overlay2/l/O253SM3ZGX5EFP7OSBPPU5UW2C:/...

5:53 PM

@vidarlo Oh hi, long time not seen

how are you?

May I ask some questions?

What are the recommended RAM assignment for installing Winows 8.1 as guest and Ubuntu 18.04 as host, using either virtualbox or KVM?

my laptop only has 4GB RAM

thaks.

windows 8 needs about 2.2 in best case up to 3.5 GB normal cases

linux needs about 512 to 1 GM ram depending on the DE and what you have running on top

Which uses more RAM, virtualbox or KVM?

linux is able to swap a lot into a swapfile

virtualbox or KVM?

6:05 PM

virt manager uses 62 MB on my machine and my running instance of arch humm well 16 GB and 4 cores

but that was to be expected as i assigned exactly that to the VM itself

not sure how much memory virtualbox takes

@Videonauth All good :) Busy working. And with you? :)

@vidarlo All fine, got a new mainboard and so on last day of last year

pretty happy with it

as a chrismas gift from a friend

System:    Kernel: 4.15.0-46-generic x86_64 bits: 64 Console: tty 2 Distro: Ubuntu 18.04.2 LTS
Machine:   Device: desktop Mobo: ASUSTeK model: TUF B360-PLUS GAMING v: Rev 1.xx serial: 180937104901208
           UEFI: American Megatrends v: 1101 date: 11/05/2018
CPU:       6 core Intel Core i5-8400 (-MCP-) cache: 9216 KB
           clock speeds: max: 4000 MHz 1: 3477 MHz 2: 2708 MHz 3: 3179 MHz 4: 3212 MHz 5: 2799 MHz 6: 3221 MHz
Memory:    Used/Total: 7507.7/32091.6MB
           Array-1 capacity: 32 GB devices: 4 EC: None

@vidarlo

hehe

good hardware gets a use =)

Well he stole the CPU from his wifes computer, bought a mainboard and the RAM and the GPU is his old one (currently in need of a cooler paste and pads replacement)

Pretty happy with this hardware to be honest against my old machine it is like flaying

hehe

yeah, hardware's not moving that fast today as ten years ao

6:20 PM

yep, and old hardware is still good in nowadays usual use cases

having 6 cores alows me to have around two VM's running and the ram as well makes it able

yep

and from a gaming perspective i have to have come across a game yet which not runs on high or ultra even with a decent framerate

dedicated console!

well ok one game brings it to its knees :D

Crysis

but that more due to the fact that the game utilizes only one core

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