Latest Ubuntu related questions

Score: 0
Flame_Phoenix avatar
Failed to open \EFI\BOOT\grubx64.efi - Not Found (Dual Boot Ubuntu with Windows 10)
us flag

Background

I have a Windows 10 machine with a SSD where I have installed Ubuntu LTS 20.04. This setup worked wonderfully for months. When I turn my machine on I get to choose which operative system to use.

Problem

That is, until yesterday. Yesterday I logged on my Windows boot, did nothing special and then turned the machine off. Windows probably installed some updates after I left.

Today I turned my  ...

Score: 0
shashI avatar
What can I do if my running programs freeze?
cn flag

I opened firefox browser and it was freeze.I can't close it. Is there any command to run in terminal to close this.

enter image description here

Score: 0
Eymen Sevil avatar
Black screen on GRUB with AMD RX 550
mx flag

I'm trying to boot Ubuntu 20.04 LTS. But, I'm getting a black screen. I can start Windows from boot menu (not GRUB). But when I will try to boot Ubuntu, I can't see anything. Just black screen. What can I do? My GPU is AMD RX 550 and my CPU is Intel i5-10400F.

Score: 0
Jus avatar
How can I install mathpix tool in ubuntu 20.04
jp flag
Jus

I just tried to install the source from the web page https://mathpix.com/ and search the tool in snap, but it didnt work, has someone knows how to install this app. Thanks

Score: 1
dasvalez avatar
How to boot ubuntu server form an ssd?
eg flag

I use an rasperry pi 4. I want to use an ssd instead of an micro sd because of speed.

But How can I boot from the ssd?

Thanks

Vale

Score: 1
ShlomiRex avatar
Where can I find the source code for Alt+Tab behaviour on Ubuntu 21? What package is that?
tf flag

I want to edit and customize the Alt+Tab behaviour. (i.e. viewing the open apps). I only need a direction - which package is that? Thanks!

Score: 0
Falio avatar
Permission denied (publickey) while copying id
sj flag

I was trying to copy a key id for password-less SSH access, however it seems that the password authentification is no. I am not sure how to change that.

Here is the original code:

ssh-copy-id xxxx@xxxx

/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/home/xxxx/.ssh/id_rsa.pub"

/usr/bin/ssh-copy-id: INFO: attempting to log in with the new key(s), to filter out any that are already installed

Score: 0
user487583 avatar
Adding a User from the Command Line: is not in the sudoers file. This incident will be reported
bs flag

I usually work as root، no problem. But some recommend that to work as user (For security reasons). But they do not mention what problems you will face in this case.

These are the things I did.

I tried to create a username with adduser.

adduser USERNAME
su USERNAME
sudo true

And then I got this message:

sudo: unable to resolve host localhost: Name or service not known
[sudo] password for USERNAME:
USE ...
Score: 0
change ZFS mirrored drive set to SMALLER drives
cn flag

I have a ZFS mirror setup and one of the drives has failed completely. These are WD reds at 4tb. This drive set has had much of its content moved and is much smaller and I do NOT need the space there. This complicated by my home directory and virtual box systems defined there - but no other data. I am using less then 500gb now. I have previously removed a 2tb mirror with older enterprise/golds. I  ...

Score: 0
John Smith avatar
What is a simple terminal with only stdin and stdout and not even interactive terminal GUI's?
cn flag

Is there a terminal I could boot which does not even permit terminal-style GUI applications which use ncurses, such as Vim, but is 100% a command line prompt where you can enter commands and the system returns the output of those commands back to the prompt?

Score: 0
Zeanix avatar
No headphone sound in ubuntu
cn flag

Im trying to swap from windows to Linux and so far it's going pretty good, however i do have an issue on my laptop where when i plug in earphones the system notices it, but i dont get any sound from them.

I have tried several fixes, but nothing has worked so far.

The laptop is an Asus UX4300U

Score: 0
InitiateInTraining avatar
Keep getting File System Errors in Ubuntu
kn flag

For several weeks now I keep getting messages with:

"System program problem detected"

All crash reports contain very similar content:

ProblemType: KernelOops
Failure: oops
OopsText:
 BUG: Bad page map in process ...
...

Call Trace:
  
Package: linux-image-4.15.0-151-generic 4.15.0-151.157
SourcePackage: linux
Tags: kernel-oops
Uname: Linux 4.15.0-151-generic x86_64

One crash report was different wit ...

Score: 0
user1386342 avatar
Segmentation fault with kdeinit5 (specifically libc) on a fresh Kubuntu 21.04 install
in flag

As said in the title, I received this error every time I took a screenshot. I disabled mutliarch support and it fixed the error with screenshots, but saw it again (may or may not be a result of removing multiarch?) when customizing KDE panels.

OS: Kubuntu 21.04 64bit
Kernel: 5.11.0-25-generic
DE: Plasma 5.21.4
Specs: i7 7700k, gtx 1080 (470 driver), 16g ram

The original error:

Application: kdeinit5 (kd ...
Score: 1
Melvin86 avatar
udisksctl power off wrong disk
im flag

I try to safely eject my external disk with the following 2 commands:

udisksctl unmount -b /dev/sdc1
udisksctl power-off -b /dev/sdc

The partition is correctly unmounted, but the second command gives the following error:

Error powering off drive: The drive in use: Device /dev/sdb1 is mounted (udisks-error-quark, 14)

Yes, I have another partition on another drive mounted /dev/sdb. But I want to power ...

Score: 3
Paulky avatar
How can I bypass the Ubuntu install username requirements?
in flag

While installing Ubuntu 21.04 for the first time, it asked me to pick a username. It wouldn't let me start my username with a capital letter. Is it possible to bypass this restriction during install?

A few workarounds I've tried:

  • Using sudo adduser Testname --force-badname (This method worked, but it still prompted me for a username during install.)
  • Editing NAME_REGEX in /etc/adduser.conf to allo ...
Score: 0
Prabal Kajla avatar
Change Ring parameters' pre-set maximum limits for NIC
cn flag

We have a Dell Poweredge R440 with Ubuntu 20.04 LTS (Kernel - 5.4.0-80.90-generic).

The ethernet adapter is Broadcom NetXtreme BCM5720.

I need to increase the Ring buffer value to 4096 for both RX and TX. The issue is that the pre-set maximimums are not allowing me to change the values greater than them.

Ring parameters for eno2:
Pre-set maximums:
RX:             2047
RX Mini:        0
RX Jumbo:       0
 ...

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