Latest Ubuntu related questions

Score: 1
madhur avatar
Wi-Fi networks not visible after security and firmware update
cn flag

I have recently done a security and firmware update. Since then, no network appears under Wi-Fi.

Below is the output of sudo lshw -C network

  *-network:0               
 

       description: Wireless interface
       product: Cannon Point-LP CNVi [Wireless-AC]
       vendor: Intel Corporation
       physical id: 14.3
       bus info: pci@0000:00:14.3
       logical name: wlan0
       version: 30
  ...
Score: 0
Muntasir Mahmud Amit avatar
Audio Output Related Issue while multiple audio devices connected in front and back panel of the desktop
cn flag

My desktop: intel core i7 10700 + Asus Prime B460 plus ATX MOBO

It has Ubuntu 20.04 installed.

I have only the speaker connected in the back panel.

The problem is with connecting the headphones to the front panel (there is a built-in mic in the headphones) is that I want to control the output through software without repeatedly unplugging the headphones.

So I don't have to plug in the headphones ag ...

Score: 3
Falio avatar
cd 'no such file or directory'
sj flag

I am trying to install cryoSPARC in my computer. At the "<install_path>" stage of the guide I follow (see image below) I entered the command:

cd /home/cryosparcuser/cryosparc

but it returned:

-bash: cd: /home/cryosparcuser/cryosparcuser/cryosparc: No such file or directory.

I don't quite know where the problem is.

Here is the relevant part of the guide I follow:

'install_path' stage

Score: 0
An Ignorant Wanderer avatar
Trying to install CUDA driver, "fatal error: asm/kmap_types.h: No such file or directory"
za flag

I had the CUDA driver installed on my machine (Ubuntu 20.04). It was working ... until it stopped working (not sure what happened). So I'm trying to reinstall it by running:

sudo sh cuda_11.1.0_455.23.05_linux.run

where I downloaded cuda_11.1.0_455.23.05_linux.run from NVIDIA's website. However, I get an error saying to look at /var/log/nvidia-installer.log to learn more about why the installation fa ...

Score: 2
Tim  avatar
How to get rid of ffmpeg showing `configuration:` message?
br flag

The below message is being displayed while using a lot of ffmpeg commands in Ubuntu 20.04. Commands like $ ffmpeg -version $ ffmpeg -i video.ts -acodec copy -vcodec copy -f mp4 video.mp4

configuration: --prefix=/usr --extra-version=1ubuntu0.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresampl ...
Score: -1
Sioux avatar
Baud Rate instable on RPI4
jp flag

I have a strange problem. I'm running a TCP to Serial server I wrote in Python3. It uses the UART of the RPI4 at 500000 baud. Initially I wrote it for a NanoPi and runs fine, but when switching to the RPI4 I had comm errors. I attached a oscilloscope to the TX and saw that when commands failed the baud rate was lower. While investigating I could relate it to the clock speed on the RPI4. watchcat /sys/de ...

Score: 0
Divija Gogineni avatar
ocfs partition creation failure
ph flag

I am trying to create a cluster file system shared by two devices. I am seeing the following error:

mkfs.ocfs2 successful

mount.ocfs2: Cluster name is invalid while trying to join the group
 Stopping ocfs2 and o2cb on device side:
Warning: Permanently added '11.1.1.2' (ECDSA) to the list of known hosts.
Stopping o2cb (via systemctl): o2cb.service.
Unmounting ocfs2_dlmfs filesystem: OK
 Copying clu ...
Score: 1
David W A Short avatar
I have upgraded from 5.4.0-77 to 5.4.0.80 and now there is no prompt to enter a passphrase for the encrpted root volume
cn flag

When trying to boot it stops with a message that it is waiting for the encrypted device when it previously prompted for a passphrase.

I can work around this by selecting the old kernel in the grub menu but can't find a fix to boot in the the most recent kernel.

Boot repair didn't work automatically, but I have uploaded a report here. https://paste.ubuntu.com/p/2GxZMbxxmg/

Any suggestions would be  ...

Score: 1
Benjamin Bray avatar
NVIDIA drivers suddenly stopped working after rebooting from Windows, reinstall fails (Ubuntu 20.04)
it flag

System Information

  • MSI Creator 15 Laptop
  • NVIDIA GeForce RTX 2070 SUPER Mobile / Max-Q
  • External LG Ultrawide monitor
  • Windows 10 / Ubuntu 20.04 dual boot

The Problem

I have been using the nvidia 455 drivers on my Ubuntu 20.04 machine successfully now for about six months. I rarely use the Windows partition, but I was using it yesterday. After shutting down Windows 10 and returning to Ubuntu, my ext ...

Score: 0
user1237819 avatar
red dashed line on screen
pr flag

I am running Ubunutu 20.04 on my Thinkbook 14s yoga (graphics Mesa Intel Xe).

All of a sudden there is a single red, vertical, dashed line on my display. I tried running updates and rebooting but the line is still there.

Any ideas on how to get rid of it ?

Score: 0
Lokesh Battula avatar
Ubuntu20.04 getting stuck
uz flag

My laptop is getting stuck after starting the device, I'm getting the opening screen and I can able to open apps ,but after sometime like 5 minutes,the system is getting stuck and I cannot able to use keyboard and mouse I tried long pressing the power button and starting the device again,but the same thing is happening again Can someone please help

Thanks in advance

Score: 0
Wesley Lassiter avatar
White screen of death upon finalization of loading
cn flag

Yesterday I took the plunge and attempted to load Ubuntu 21.04 onto an old 2008 Macbook. I used a USB drive to load from and everything we going great. At the end, the prompt as me to remove the USB and to press enter for the computer to restart. When it started back up I was greeted with a white screen of death and nothing else on the screen. I tried using all the old "Mac" restart button but nothi ...

Score: 0
Flixich avatar
Use external display driver for internal display
in flag

I have an old Lenovo X201T Tablet-PC and it works fine, except the integrated GPU, which turns the whole screen into a greenish flickering display. If I plug in an external monitor it is working perfectly and it is without these artifacts. In Windows I managed to use the driver for the external display for the internal one and it works.

Is there a way with Xrandr or something else to switch the d ...

Score: 1
Kajair avatar
Driver problems on Laptop
np flag

My new laptop, Lenovo V14 iil touchpad and wifi modules are not recognized in ubuntu 20.04 . Please give me solution thanks alot

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  ...

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