Latest Ubuntu related questions

Score: 0
BabaG avatar
How to reinstall Ubuntu Studio without formatting /?
cn flag

My system, dedicated Ubuntu Studio 22.04 with a KDE Desktop, seems to have become corrupted when I tried to install a beta version of a CLI transcoding utility called REDline for RED cameras. I can't seem to start the xserver any more and just get a useless graphic when I get to where I'd expect my sddm login screen to be. It has a sad face and says something went wrong. Entire screen is black with a bi ...

Score: 1
usr30742 avatar
Force apt or apt-get to return error code on warning
sb flag

apt-get and apt are exiting with 0 instead of an error code when they cant resolve a repository. I'd like to get a non-zero in this case (and for warnings generally).

e.g.

# apt-get update
Err:1 https://mirror.csclub.uwaterloo.ca/ubuntu focal InRelease
  Temporary failure resolving 'mirror.csclub.uwaterloo.ca'
Reading package lists... Done
W: Failed to fetch https://mirror.csclub.uwaterloo.ca/ubuntu/di ...
Score: 0
user1102665 avatar
800x480 simulation?
lu flag

I am developing a Python (pyqt5) app on my desktop that has 2 additional monitors. The app will be deployed to a blackberry processor running a Debian linux with a 800x480 pixel touchscreen. Is there anyway I can simulate the 800x480 screen on one of my monitors (which don't go down to that resolution)?

Score: 0
nat34 avatar
Sasquatch (binwalk) throws error when running build.sh
nr flag

I cloned the repository and installed the c compiler As said here:

https://github.com/ReFirmLabs/binwalk/blob/master/INSTALL.md

But when trying to build sasquatch, after I installed and cloned it, when using

$ (cd sasquatch && ./build.sh)

as stated in the INSTALL.md, what happens is that I get this error:

unsquashfs.c: In function ‘read_super’:
unsquashfs.c:1835:5: error: this ‘ifâ ...
Score: 0
SharonK avatar
Gnome tweak icon change doesn't take on dock or desktop
cn flag

Ubuntu 20.04 on Lenovo laptop running Tweaks 3.34 with Gnome shell 3.36.9 and GTK 3.24.20. I selected Humanity icons with High Contrast applications theme. The Humanity icons appear in Nautilus but not in the dock or on the desktop with exception of apps installed in snap, e.g. Thunderbird. If I change the applications theme to Yaru, then the Humanity icons appear on the desktop but still not in the doc ...

Score: 0
Andrea Alfieri avatar
Recover data from corrupted mp4 file
gr flag

I had a corrupted FAT32 SD (see Recover data from FAT 32). With a tool using Windows (sorry!!!) I was able to recover some mp4 files. The recoved probability was low, and in fact those mp4 files don't work. When I open it with VLC, nothing happens.

Do you know some tips to recover even partially, an MP4 file?

Thank you for your support

Score: 0
ubuntu_coyote avatar
Unbootable problem with USB root hub (Ubuntu 20.04.05)
ag flag

I upgraded from 18.04 to 20.04 a few days back. Everything worked great and looked good. I had some issues with TimeShift and Deja-Dup, which I sorted out.

When I viewed my computer the next morning to check on the backup status - I could not type in the password box. I use a USB 3.0 4K four-port KVM so sometimes I lose the mouse or keyboard. I power-cycled the KVM but still could not type in ...

Score: 0
Pulseczar avatar
How do you reset the display settings, like brightness, without rebooting?
jp flag

The common situation is this: You run a game and the game changes your display's brightness while in the game. The game then crashes or freezes, causing it to not exit properly, causing it to not reset your display settings. You are left with the undesired brightness changes on the desktop. Starting the game again and exiting it, without crashing, might sometimes reset your display, but definitely someti ...

Score: 0
SkiBum avatar
Intel integrated GPU not recognized
cm flag

CPU: Intel 12900k (Alder Lake - 12th Gen) Video card: Nvidia RTX 3080 MOtherboard: MSI MEG Z690 Unifiy-X O/S: Ubuntu 22.10

System does not see the Intel integrated GPU

$ lspci -v |grep -A8 VGA

01:00.0 VGA compatible controller: NVIDIA Corporation GA102 [GeForce RTX 3080 Lite Hash Rate] (rev a1) (prog-if 00 [VGA controller])

I want to have both the Nvidia GPU and Intel GPU (QSV) available for h/w vi ...

Score: 1
Fildo7525 avatar
Ubuntu 22.04 not booting after I installed nvidia drivers
in flag

Today I installed new proprietary and tested nvidia drivers for Ubuntu 22.04. Kernel 5.15. After the grub screen the logs showed

ACPI BIOS Error (bug): could not resolve symbol [\_TZ.ETHD]

Than the screen goes black.

Is there a way to fix it by installing the drivers from life USB? Thanks for any leads

Nvidia is GTX 1660Ti

Score: 1
Luis Alvarado avatar
Gnome Power Profile Shows on Desktop Computer
it flag

Since Ubuntu 22.04 I am seeing a "Power Profile" when looking at the settings as seen here:

enter image description here

Is there a reason why this shows on a Desktop Computer instead of only a Laptop computer? Does this affect CPU Performance, Graphics Performance, Memory Performance, SSD (Like NVMe) Performance.

And is there a way to simply remove it (In case it is only for Laptop power usage) from there and set it to a spe ...

Score: 0
bimal avatar
Re-enable secure boot via MOK
cn flag

I have disabled secure boot by MOK to install something and now I want to re-enable it. But When I try to do it by BIOS secure boot section is not changeable. Then I tried by Mok by sudo mokutil --enable-validation. And after reboot my computer and try to re-enable secure boot I get 'Failed to delete Boot state' error. How can I handle that problem.

Score: 0
MZ_Guy avatar
Secure boot inconsistent behavior
cn flag

I have two systems with 20.04 LTS. Secure boot is enabled on both. The behavior of the two systems is different, and I have not idea why.

System 1: Asks for a new secure boot password on each kernel update (I assume it's new, since it asks for a re-type). Why?

System 2: Never asks for anything on kernel update. Running 'mokutil --sb-state' indicates SecureBoot is enabled.

Why the difference, and how sh ...

Score: 0
E: Package 'openresolv' has no installation candidate (Ubuntu 22.10)
ar flag

So this is a pretty obvious error but I can't understand why.

I have run

sudo apt update

and then try to install using

sudo apt -y install openresolv

Which gives the error

Package openresolv is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source

E: Package 'openresolv' has no installation can ...
Score: 0
pattytejada avatar
Screen goes black after connecting second monitor
al flag

so every time I connect my second monitor, the moment I do the screen goes black on my laptop monitor and my second monitor will turn on like a connection has been made successfully. But after a few moments, both screens will remain black. Clicking or typing wont change anything, and even unplugging the usb-c cable that is connecting the laptop and monitor wont bring back any images back on the main lap ...

Score: 0
Uwe Pfeifer avatar
How do I do this from nginx syntax in caddy v2?
ls flag

How can I do this inside a reverse_proxy { ... } statement, done with nginx but I need to do it in caddy v2:

proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
Score: 0
Jean-Francois avatar
autoinstall ubuntu 22.04 LTS autoinstall does not work in uefi mode
hn flag

I'm working on autoinstall ubuntu 22 for my company (using VMWare and PXE). It works fine with legacy configs, but not with UEFI. I have continued the install process to the end and then get the autoinstall file to compare with mine. I tried too, to replace my user-data file with the generated one. But the result is always the same. The interactive installer is always starting and I can't succeed in get ...

Score: 0
WrongError avatar
UGreen AC1300-High-Gain Dual-Band Wireless Adapter WIFI Driver not installable
sy flag

So recently i tried to install the official driver for the UGreen AC1300-High-Gain Dual-Band Wireless Adapter(Model: CM493). I tried the CDROM driver...i tried to install it from the original website...but nothing worked out. And yes its compatible with Linux.

Steps as in the manual:

I unpacked/unzipped the downloaded file. Then i opened terminal and navigated to the folder where "install.sh" is(Wit ...

Score: 0
matti157 avatar
HP 840 G1 and dual graphic card
ar flag

I would like to try to put Kubuntu 22.04 or 22.10 on my Elitebook 840 G1. The laptop has 2 video cards: -Integrated INTEL -AMD 8750M

In Windows does the automatic switch between the cards happen, in Linux how does the management work?

Would it be okay even if the integrated Intel always works and the AMD stays off

I need some drivers for the Intel or AMD?

Score: 0
Captain Giraffe avatar
How to start a snap application from the terminal?
jp flag

I'm logging in to an ssh -X session and I can't figure out how to start the snap version of IntelliJ.

I can see an entry

./snap/intellij-idea-ultimate/401/bin/idea.sh

I would like to execute this.

Score: 0
Alex avatar
Mac OS has a folder called "Volumes" that is located at /Volumes. Is there an equivalent folder on Ubuntu?
bh flag

Basically, the folder "Volumes" in Mac OS is convenient because it contains both local mounted drives as well as network drive mounts. I'm wondering if there's a similar folder on Ubuntu. And if there isn't, is there another way to get the file path to a mounted network drive?

The mounted drive has an smb address, but I can't enter that into MATLAB's filepath system. Was wondering if there was a  ...

Score: 1
Ubuntu 22.04 software center loading forever
us flag

This seems to be a question that has been asked years ago but I don't think there's an updated answer to the more recent Ubuntu release, and I am stuck with it...

Basically I installed Ubuntu 22.04, and the software center gets the 'loading forever' screen every now and then.

When I reboot the system and open software center, it loads ok. Checking updates also works. But after using the system for a ...

Score: 0
How to boot one windows os from ubuntu grub menu
jm flag

How can i boot one windows from ( i have 2 windows and 1 ubuntu os in system) from grub. 2 windows but have only one windows boot manager. when i boot windows boot manager from grub it needs an extra effort each time to choose which windows os is boot. so if write a code to grub menu entry to boot specific os say 'windows 1' i can boot that os without going to windows boot manager.

i tried to boo ...

Score: 0
Jonas Kessler avatar
i try to install ngrok but come back with the error network is unreachable
sd flag

I use OS Ubuntu server 22.04.1 LTS

server@server:~$ sudo snap install ngrok
error: cannot install "ngrok": cannot get nonce from store: persistent network error: Post
       "https://api.snapcraft.io/api/v1/snaps/auth/nonces": dial tcp 185.125.188.58:443: connect:
       network is unreachable
Score: 0
Mohammad Rajabi avatar
Problem of nvidia gpu temperature
ma flag

I have installed ubuntu on my laptop (dell precision m4800) and that uses xserver-xorg-video-nouveau as driver for graphic card. When i use my system for about 2 hours the laptop will getting hot and the fans will rote too fast and with much noises. What can i do? My graphic card has driver 390 and 410-sever as proprietary drivers. What i must to do for temperature?

Score: 0
Ganesan Subramanian avatar
ISBF editor function keys mapping
fo flag

we are using ISBF editor in ubuntu, inside that editor some of the keys are working weird. like backspace, delete keys are not even working, hence i have modified .Xresources file with key mapping like below in .Xresources file and those are working fine now, but still not able to find relevant code for "End" keys.

dt.obsolete: true *VT100.Translations: #override
BackSpace: string(0x08)string(0x7F) ...

Score: 0
Dmitry Risenberg avatar
Webcam settings are reset by each app
bh flag

I have Razer Kiyo Pro web camera on Ubuntu 20.04 and configure it via

v4l2-ctl -d /dev/video1 --set-fmt-video=width=640,height=480,pixelformat=H264

and then check via

v4l2-ctl -d /dev/video1 --all

that the settings are applied.

However, when I start an app that is using web camera, like Zoom or VLC, it discards all the settings I've set and replaces them with its own resolution and format. How do I avo ...

Score: 1
TCG248 avatar
boot menu usb choice
hr flag

I have Ubuntu Desktop on my USB but when I open my boot menu there are multiple things listed to boot from.
==select a boot first device== LS120, +Hard Disk, CDROM, USB-FDD, USB-ZIP, USB-CDROM, USB-HDD, Legacy LAN.
I placed the USB stick in the front of my PC. which one is the correct one to boot from?
*the plus indicates what it is set to as far as I'm aware cause it has windows already installed and ...

Score: 0
Shojajou avatar
How to route all network traffic back and forth to an external computer on the internet?
my flag

Due to our restricted internet in Iran, I need to establish an internet connection through an OpenVPN server-which is located in Iran- and then route all network packets from the VPN clients to another server-which is located on a free and open internet-.

I am a software developer and don't have any deep knowledge in networking. I just know some basics. So, it would be so great if you enlighten me  ...

Score: 0
zach avatar
Upgraded to 22.10 and can no longer scale resolution on my 3 x 32" monitors
tz flag

I just updated to 21.10 and now cannot scale any of my 3 32" monitors.

Everything has worked fine with Ubuntu 18 to 22.04 with no issues.

Now I get a message that says:

"Changes cannot be applied, this could be due to hardware limitations".

If I switch to Wayland I can scale 2 of my monitors and not the 3rd.

Currently 2 are display ports and one is HDMI.

Any ideas?

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