i can’t start dual boot ubuntu 21.04

yesterday i installed ubuntu 21.04 and restarted but i could not run ubuntu. windows boot manager opened and offered 2 options (windows 7 or windows 10) I installed ubuntu instead of windows 10 and now windows 10 does not start and ubuntu option does not appear

NVIDIA driver not loading in Dell g3-3590 Ubuntu 21.04 nvidia-driver-470

Recently my nVIDIA card stopped working in ubuntu 21.04.
I noticed constant CPU use and top showed modprobe using 44.5% CPU at all times.

Furhter investigation with udevadm monitor revealed the following scenario repeatedly:

UDEV  (601.231746) add      /bus/pci/drivers/nvidia-nvswitch (drivers)
UDEV  (601.234197) remove   /bus/pci/drivers/nvidia-nvswitch (drivers)
UDEV  (601.314627) add      /bus/pci/drivers/nvidia (drivers)
UDEV  (601.332429) remove   /bus/pci/drivers/nvidia (drivers)
KERNEL(601.590924) add      /bus/pci/drivers/nvidia-nvswitch (drivers)
KERNEL(601.591569) add      /bus/pci/drivers/nvidia (drivers)
KERNEL(601.591594) remove   /bus/pci/drivers/nvidia (drivers)
KERNEL(601.592254) remove   /bus/pci/drivers/nvidia-nvswitch (drivers)

dmesg revealed the following:

(  942.115453) nvidia-nvlink: Nvlink Core is being initialized, major device number 511
(  942.115458) NVRM: This is a 64-bit BAR mapped above 4GB by the system
               NVRM: BIOS or the Linux kernel, but the PCI bridge
               NVRM: immediately upstream of this GPU does not define
               NVRM: a matching prefetchable memory window.
(  942.116045) NVRM: This may be due to a known Linux kernel bug.  Please
               NVRM: see the README section on 64-bit BARs for additional
               NVRM: information.
(  942.116047) nvidia: probe of 0000:01:00.0 failed with error -1
(  942.116069) NVRM: The NVIDIA probe routine failed for 1 device(s).
(  942.116070) NVRM: None of the NVIDIA devices were initialized.
(  942.116556) nvidia-nvlink: Unregistered the Nvlink Core, major device number 511

Again, this repeats conmtinuously.

I really don`t have a clue how to fix it. GPU work flawlessly in Windows 10.

rsync – Ubuntu 21.04 and 1st Timeshift system backup. Look correct?

I’m new to Ubuntu. I’m trying to do my first system backup using Timeshift. The screenshot with the details is here https://imgur.com/a/ZelWeZJ My Ubuntu system is about 4 days old. This first initial backup created about 215,400 directories and files.

This sound about right? Did I miss anything? If I got it right, then I’ll start doing incremental backups on top of this initial backup.

I’m backing up my user files (/home) directory separately.
enter image description here

permissions – problem installing searx on ubuntu server 21.04

im trying to install searx on my ubuntu vps server but when i run ./utils/searx.sh according to the official documentation


i get this error

ls: cannot access '/home/test/searx': Permission denied

ERROR: ./utils/searx.sh: line 385: user ‘searx’ missed read permission: /home/test/searx

what command would i run to fix this? thank you for any help

nvidia – How do I install cuda for Ubuntu studio 21.04?

  • OS: Ubuntu studio 21.04.
  • GPU: GeForce GTX 980

Its an operating system that has pre-installed software like the animation software called blender.
I downloaded the operating system here: https://ubuntustudio.org/

But when I try running blender, it tells me I cant use the graphics card because of a cuda software issue so it will use the cpu instead. My graphics card is a GeForce GTX 980 and I know that its compatible with cuda by running the command

lspci | grep -i nvidia

After I ran that command, I get: 2d:00.0 VGA compatible controller: NVIDIA Corporation GM204 (GeForce GTX 980) (rev a1)
So im assuming that means it should work because it has the word compatible in the sentence.

When I go to the cuda website it says that the latest supported ubuntu version is
Ubuntu 20.04.2 LTS, not the 21.04 version I have..

The tutorial I found online didnt work for me.

Does anyone have a working method of installing cuda on Ubuntu studio 21.04?

drivers – How to enable discrete GPU in Lubuntu 21.04?

I have DELL Inspiron 5520 laptop with Lubuntu 21.04 installed and working properly. This laptop has a normal GPU (Intel) and a discrete GPU (Radeon 7600m). When i do the upgrade i notice that Lubuntu recognized the discrete GPU and installed its drivers correctly. But the question is, how can i enable that discrete GPU (Radeon) for using specific apps and games in Lubuntu 21.04?

Upgrade from 20.10 to 21.04 fails with “Authentication failed”

upgrading fails on my machine (same using the Software Updater) with:

goetz@Ubuntu-Mac:~$ sudo do-release-upgrade 
Checking for a new Ubuntu release
Get:1 Upgrade tool signature (819 B)                                                                                      
Get:2 Upgrade tool (1.276 kB)                                                                                             
Fetched 1.276 kB in 0s (0 B/s)                                                                                            
authenticate 'hirsute.tar.gz' against 'hirsute.tar.gz.gpg' 
Authentication failed
Authenticating the upgrade failed. There may be a problem with the network or with the server.

Does anyone have an idea how to solve this?

-Best regards, ii7017-

Chrome live caption not working on ubuntu 21.04

Live caption feature in Chrome is not working for me. I have Chrome 91.0.4472.114 and
Ubuntu 21.04 64-bit

I can’t find anything about this problem on the internet. Is this a known issue?

(The feature I m talking about: https://support.google.com/chrome/answer/10538231?hl=en)

uefi – Installing 21.04 on Gigabyte B560M DS3H with Intel Core i9 – Multiple problems

I have a brand new machine comprising

  • Motherboard: Gigabyte B560M DS3H
  • Processor: Intel Core i9-11900 2.5GHz (Rocket Lake)

After quite some troubleshooting I have managed to install Ubuntu 21.04 on this machine but I still have some problems. Skip to the end for the unresolved questions.

In order to get Ubuntu installed and booting I had to take the following unusual steps:

  • To avoid power-off during boot I had to add kernel parameter: acpi=off
  • The Ubuntu installer failed at the setting up GRUB stage. I was able to manually install grub using the chroot method here except that a) I had to mount my boot partition at /target/boot/efi not /target/boot and b) I had to use the --no-nvram option of grub-install to avoid an Operation not permitted error.
  • To get the onboard graphics working above 1024×768 resolution I had to apt install linux-oem-20.04

Now I can boot the OS but I have two unsolved problems:

  1. According to /proc/cpuinfo the OS is only aware of one of my eight CPU cores.
  2. The machine cannot power itself off, I can only power off via a long press on the physical power button.

Does anyone have any idea how to diagnose or fix these problems?

Thanks for any help!

No Wi-Fi Adapter Found – ubuntu 21.04 – lenovo ideapad 100-15ibd

Wifi Wireless adapter not found in my lenovo ideapad 100-15ibd – ubuntu 21.04