Latest Ubuntu related questions

Score: 0
Suhrav Hussain avatar
Dual boot and bios option not coming after installing dual boot
de flag

I recently installed ubuntu with dual boot without any usb or pendrive by watching a YouTube tutorial. But Now I can only use my ubuntu os. No dual boot option shows when I start the computer. Not even my mother board logo. Only black screen comes and after that ubuntu logo shows and the os start. How can i fix this issue?

Score: 1
Eliana Lopez avatar
Second Monitor suddently not recognized on Ubuntu 20.04
id flag

So I had this problem originally when I first got Ubuntu on my PC but I managed to fix it. However, for some reason it has appeared again.

I tried all these steps so far:

  • purged Nvidia
  • switched the HDMI cables
  • changed to different drivers from additional drivers
  • disabled secure boot
~$ xrandr

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
eDP-1 connected primary 1920x1 ...
Score: 0
deepblue avatar
grep command using wildcards [0-9]
in flag
grep ".0000000" data > output

I extract the all numeric data ending with .0000000 in the data text file. When I changed this code using wildcard as follows:

grep ".[0-9][0-9][0-9][0-9][0-9][0-9][0-9]" data > output

The above code is supposed to extract all numeric data ending with any seven digits after the dot, but it does not work as it is supposed to be. How I can modify the above code t ...

Score: 0
Md. Ashraful Islam avatar
How to resolve "GPT detected. Please create a BIOS-Boot partition (>1MB, unformatted filesystem, bios_grub flag)."
cn flag

I am very new in Ubuntu. My grub is not detecting my windows Os. I am now in Ubuntu Os but cannot go back to my windows system.

Here is my boot repair report I guess...

https://pastebin.ubuntu.com/p/dD2JqkDG4W/

Suggest me some steps to create a BIOS-Boot partition. Thanks in advance

Score: 0
emptysocket avatar
Is there a reason sysctl is broken into so many configuration files?
om flag

Is there a good reason that sysctl is broken into so many configuration files across multiple directories?

Is there a reason I can't delete all the sysctl.d configuration files and put everything in /etc/sysctl.conf?

My system is running Xubuntu 20.04 and sysctl.d directories:

  • /etc/sysctl.d/
  • /usr/lib/sysctl.d/

But there must be other config files with sysctl keys, because if I run:

# sudo sysctl - ...
Score: 0
Teimuraz1962 avatar
How to use HP MFP m125a for scanning with HP JetDirect 175x?
us flag

Configuration:

Kubuntu 20.04 with all updates $ uname -a Linux temo-Lenovo-T420 5.11.0-27-generic #29~20.04.1-Ubuntu SMP Wed Aug 11 15:58:17 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

Comp: Lenovo T420, RAM 16, SSD 512 GB + HDD 1.5 GB

Small home network, router is "Residential Gateway" from provider, chinese Noname 813-G. 50 megabits FO link.

I've got HP LaserJer MFP m125a printer/scanner/copier with ONLY US ...

Score: 0
Kcredden avatar
Brother HL-L2300D printer won't do anything on Ubuntu 20+ but worked before
us flag

Ok, got an odd problem. Before my OS/apps drive was dying I had the printer listed above working fine. New HD, re-install of Ubuntu 20.04 and now the printer won't work at all.

  1. I installed the brother printer install tool as before, and ran it without problems.
  2. configured it though CUPS

But nothing I've done will make the printer work. I sent a test print for example, the light blinks as if it's ge ...

Score: -4
user654789384 avatar
Disallow Bluethooth Discovery
mx flag

I run Debian and I do need Bluetooth to connect to my headset, but I don't want devices can see my laptop nor be able to connect to it.

I tried the following commands, but they just kill the Wifi; if I re-enable the wifi in my gnome-session, the bluetooth is discoverable.

rfkill unblock 0
bluetoothctl discoverable no
rfkill block 0

I also tried the following command, but its effect isn't persiste ...

Score: 0
Mircea avatar
Ubuntu driver for WiFi for Asus 550L
ru flag

My Asus 550L, which initially came with Windows 7 and now has Ubuntu 20.04, connects to Internet via Wi-Fi. The connection works for a short time and is unstable.

Do you have any suggestion or can you tell me how to change drivers (Ralink corp. RT3290 Wireless 802.11n 1T/1R PCIe [1814:3290])?

Score: 0
MikeG avatar
Ubuntu 20.04: Screen randomly goes black and sometimes logs out
in flag

I have an issue where my screen randomly goes black and sometimes logs me out of my session. It sometimes happens every few minutes and multiple times in a row, or sometimes doesn't happen for a few hours.

System:
Ubuntu 20.04.3 LTS
5.11.0-27
Dell Latitude 7280

Empirically, I have noticed that the issue:

  1. doesn't seem related to power; the issues occurs whether charging or not
  2. doesn't seem relate ...
Score: 1
alexionut05 avatar
Dolphin, System Settings, Konsole and KSysGuard icons missing in Kubuntu 20.04 (KDE)
nz flag

Title. I can't recall when this problem first occurred. Both icons in Task Manager and Start Menu, as well as the icons inside the apps themselves simply don't appear. The apps work, however the icons are just blank.

Screenshot 1

Screenshot 2

Score: 0
Screen does not go blank when lid is closed
ru flag

I've recently installed Ubuntu 20.04.3 on a new Dell Vostro 3500 (11th gen processor). I was previously using 20.04.2 on an older Inspiron. On my old laptop, when I shut the lid, the screen would automatically go blank. I didn't have to do anything in Settings or Tweaks for this to happen. But in my new laptop, the screen stays on. I've seen a bunch of long threads with the same problem but I haven't be ...

Score: 0
CLI: How to browse contents in a jar file?
mx flag

Inside a Ubuntu OS, how can I browse contents in a jar file by terminal?

Score: 0
Concerto avatar
Installing a "Shortcut" in the Application Menu from Python .desktop File
us flag

I would like to install a chess GUI called "PyChess". Since the repo of my distribution (20.04) doesn't offer PyChes, I downloaded a .tar.gz file, extracted it, and with a simple `./pychess` (a python file in the program's folder starting the program) I can start the GUI. The trouble is, that I would like to have my application visible in the menu (when I press super+A).

I have tried moving the

Score: -2
Ruchir Mandora avatar
What is S in file permission -rwSr–r–?
cn flag
  • The permission -rwSr–r– represented in octal expression is 4644.

  • The permission -rwxr-sr– represented in octal expression is 2754.

read is 4 , write is 2 and execute is 1 . What this S or s is and how many numbers it contain . How we are getting above "octal numbers"?

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