ubuntu doesn’t work :UUID=xxxx does not exitst

My computer has two systems, Windows 10 and ubuntu18.04. Today, when I tried to get into Ubuntu(I already laid it aside for about one week ), the whole screen showed pure purple for at least 10 minutes, so I forced the computer to shut down.Then when I tried to get into Ubuntu again, it showed :
[enter image description here][1]
Then I tried to open ubuntu in recovery mode,but the outcome was same.And I also tried this solution:https://forums.linuxmint.com/viewtopic.php?t=47594,doesn’t work either.
At last I run fsck.ext4 -y /dev/sda1(where the root is),and showed:
[enter image description here][2]
Anyone know how to deal with is issue?Any help would be appreciated!
[1]: https://i.stack.imgur.com/n0nw2.png
[2]: https://i.stack.imgur.com/xEiga.png

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Author: OilLight

Change terminal tab color in Ubuntu 18.04

I am exactly looking for the same as these guys:

How to make selected tab in terminal more prominent
Customizing terminal tab color in Ubuntu 17.10

They use this file:

~/.config/gtk-3.0/gtk.css

But I can’t find it in my Kubuntu 18.04

Is there any new solution for 18.04 ?

Thanks

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Author: user204415

GRUB not picking up windows boot manager which is in another drive

Ubuntu 18.04 LTS and Windows 10
I have a laptop that has an SSD and a hard drive
Windows is on the SSD and Ubuntu on the Hard Drive
I made a separate EFI partition while installing ubuntu using the “Something Else” option
When I boot my laptop I have to press “Esc” key to enter GRUB and it does not pickup the windows boot manager
Moreover, Ubuntu is not detecting the SSD
What to do ?
Please ask for any additional info required

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Author: Tanmay Bhatnagar

Can’t open GRUB in ubuntu 18.04

Its a dual boot i.e. windows 10 and ubuntu 18.04. Ubuntu is filled as preferred choice hence GRUB doesn’t come by default.
I went through many resources available and they all said press shift before the logo of ubuntu appears i.e. while the manufacturer logo is there in the screen( in my case its Lenovo ).
I have tried tapping shift continuously , long pressed shift and even kept it pressed before turning the computer ON but in none of the cases GRUB window opened. Have tried it with both left as well as right shift.I am trying to open ubuntu’s recovery mode.

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Author: Aaryan Gupta

Can’t run Google Chrome on Ubuntu 18/20

I’ve installed Ubuntu 20 LTS from official site with Rufus. And then I downloaded Google Chrome from google.com/chrome 64 bit.deb for Ubuntu
The first time I open, Chrome works nomally but after that time I can’t manage to open it, I tried to launch it from terminal/gnome it yeilds:
NaCl helper process running without a sandbox! Most likely you need to configure your SUID sandbox correctly
This also happens on Ubuntu 18.04
Any help is appreciated!

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Author: Phạm Văn Tiến

Run GUI Application from web-based terminal emulator ubuntu18.04/Jupyter Notebook

I have installed a fully-functional terminal emulator in an IPython/Jupyter notebook. This is useful for notebook environments that don’t provide shell access. The terminal is used inside the browser. All commands are executed correctly. But, there is a problem with opening a GUI application from the web-based terminal. Web-based terminal screen

For instance, executing xclock inside the terminal does not open the application window. Is there any feasible solution to open GUI application from web terminals?

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Author: Muhammad

Help please – installed ubuntu 18.04 lts – cant get ethernet/wifi working

I have a dell optiplex 9010 desktop PC. I have just installed ubuntu 18.04, alongside windows 10, on my hard disc in a separate partition. All is ok except I cannot establish an internet connection.
When I go onto settings> Wi-fi…..it says no wifi adapter found. I have tried running an ethernet cable from laptop to desktop but it will not establish a connection. I then tried tethering my mobile phone and this allowed me to go online however I still cant figure out how to install the drivers!!

Using my laptop (packard bell) I have looked online for the drivers for these devices only because I am assuming the device drivers are not present, I downloaded from an intel web site what I think are the related drivers. The name on the file to be extracted was e1000e-3.8.4.tar.gz.
I have extracted these files to a usb stick but have no idea if 1) This is the probable fix and 2) if it is how can I upload these drivers to my desktop. (my desktop is an optiplex 9010)

I am very new to linux and following some suggestions online I used the terminal command ‘lspci’ and this showed the following what I believe to be wifi/ethernet related devices on the system:

  1. ethernet controller [0200]:intel corp 82579LM gigabit network connection.
    Subsystem: Dell 82579LM gigabit network connection.
    Kernel driver in use: e1000e.
    Kernel modules: e1000e
  2. ethernet controller [0200]:intel corp 82572EI gigabit ethernet controller. Subsystem: intel corp PRO/1000PT server adapter [8086:1082]
    Kernel driver in use: e1000e.
    Kernel modules: e1000e

I have two ethernet cards in my desktop.

  1. Intel PRO/1000PT server adapter 82572EI and…
  2. Intel 82579LM gigabit network connection…

Any help would be very much appreciated. Thanks in advance.

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Author: zatta303

HP PRINTER/SCANNER

I bought HP Laser MFP 135a black and white scanner/printer. I am new in Ubuntu and I use Ubuntu 18.04 LTS. I tried to open localhost:631 by installing CUPS in Terminal as seeing in one youtube video but no suceed. I do not know much to do. I use printer/scanner via USB. Could someone be kind and help me to set to work both scanner and printer.

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Author: Alain-Alain

Why would Ubuntu treat NXDOMAIN as resolving to localhost?

Every time I should be getting an error because a domain does not exist (e.g. could not resolve host), I instead get an error about connecting to a loopback address:

$ curl -4 -v https://nonexist.invalid
Trying 127.0.0.1...

The problem only starts occuring about 2 seconds after establishing a wireless connection. For a short time, all works as expected.

I am using systemd-resolved and dns appears to be working:

$ readlink /etc/resolv.conf
../run/systemd/resolve/stub-resolve.conf
$ dig +short A example.com
192.0.2.1
$ dig +short A nonexist.invalid
$ systemd-resolve -t A nonexist.invalid
nonexist.invalid: resolve call failed: No appropriate name servers or networks for name found

If name resolution looks okay, why would programs still appear to be resolving names to 127.0.0.1?

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Author: anx

ubuntu stuck on login page – can’t login with keyboard

I don’t know why but my ubuntu session got stuck at the login page suddenly and I can’t ge through any longer. When starting the VM, i get the following screen :

enter image description here

I’ve tried CTRL+ALT+F1 and CTRL+ALT+F7 but no luck… my keyboard and mouse aren’t working. I’ve also tried CTRL+ALT+F3 and ran

sudo apt install --reinstall ubuntu-desktop

sudo apt install --reinstall ubuntu-session

but still the same.

enter image description here

I’m wondering what’s wrong and what I can do. If ever it is not possible to recover my session, is there a way to create another VM with the disk of this one… i’d hate to loose everything.

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Author: Boris M