Questions tagged [devices]
The devices tag has no usage guidance.
339
questions
5
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How can I turn off a USB Lamp in Ubuntu?
I bought a USB lamp that I want to turn ON/OFF using commands (my purpose is to setup some CRON jobs to turn it ON at certain times).
I researched several answers, but none worked.
I tried outputting ...
- 211
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0
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8
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Audio Devise Selection Dialogue Stopped Working on Ubuntu 22.04.3
While there are a ton of questions (all well answered) about the exact opposite -- i.e. how to get rid of the audio device selection dialogue box when plugging in a new audio device -- I have lost ...
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1
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36
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What is the point of creating a symlink in /dev direcory?
I understand that you can write custom udev rules to create a symlink in /dev directory.
Wondering what having a symlink in /dev accomplishes?
What is the symlink linking to?
ACTION=="add", ...
- 111
0
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1
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52
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Ubuntu 22 'lost' all devices after morning boot; lspci still shows them; not a HW issue, because Live DVD loads correctly
EDIT: Suspicious log entries are added at the end of the post.
NOTE: this is NOT a hardware problem. I booted up an Ubuntu installation media, all the devices work as they should.
I would like to get ...
- 101
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0
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107
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no input device is detected ubuntu 22.04 - no microphone is detected
I just installed ubuntu 22.04 and i'm facing an issue is that there is no input device detected .
i tried to use pavucontrol but it doesn't work :
lspci -knn | grep Audio -A3
01:00.1 Audio device [...
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0
answers
49
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snd-hda-intel only showing up one audio output device (HMDI) also no input device
So I added snd-hda-intel option to alsa-base.conf
options snd-hda-intel model=generic
but I'm only getting one output device which is the HDMI. The actual motherboard audio card is not working, ...
0
votes
1
answer
43
views
Pre-define device number (/dev/video)
having some capture device, it listed with lsusb Bus 002 Device 002: ID 32ed:3200 ezcap ezcap CAM LINK 4K
but its device value changes from time to time, so I need to change cap (j) /dev/video pretty ...
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0
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0
answers
54
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USB device is not authorized for usage when connecting the device
I have Ubuntu 20.04 running on a Dell-XPS-15.
When I restart my computer, my USB devices are detected and everything is fine. Then if I unplug the device and plug it in again - it is not recognized ...
- 1
0
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0
answers
35
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Remoting a 3D printer using netcat or socat
I have my 3D printer at my lab in the basement, where I also have my Ubuntu (desktop) fileserver; in order to not overload it, I would like to avoid the simplest solution that's run Cura on fileserver ...
0
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46
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A question about udevadm trigger for power-switch
I use ubuntu 20.04. Today my computer shut down automatically twice. I entered 'journalctl' for checking and got the result 'systemd-logind[761]: Power key pressed.' I googled this result and found ...
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29
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Main sound device disappears in "jack" plug
I have a laptop with "jack" audio output. When I plug my headphones in, I expect to have two sound device - main laptop speaker and headphones, any of which I can select in my settings. But ...
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31
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Xserver "reloads" input devices after system startup. How to debug?
I am attempting to figure out why many (10+) input devices (most importantly, my touchpad) are being needlessly loaded a second time and overwriting user-defined settings with default values.
Here is ...
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0
answers
33
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No output devices in sound Setting
I connected my Bluetooth speakers to the computer, but it does not appear in output devices in sound settings, so that it's connected, but the sound still uses the computer speakers.
my output devices:...
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0
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908
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How to fix '* failed to start daemon error: cannot connect to daemon' on Linux ubuntu
I had to install the adb tools on my Linux ubuntu with the command line but when I execute the command adb devices, I have this return in my terminal :
uriel@uriel-linux-ubuntu:~$ adb devices
List of ...
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3
votes
1
answer
1k
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Who/what is creating /dev/loop0, /dev/loop1, ... /dev/loop7?
I've recently been working on a project requiring encrypted files mounted via a connection to a loop device. While the project will run on an Ubuntu system, I was experimenting with setting it up on ...
- 1,223
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0
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20
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Assign /dev/sr0 to external optical drive
I have a piece of software that I can't alter that looks for a disc in /dev/sr0. That device is the integrated dvd drive in my computer, which has become inoperable. However, it still shows up as /dev/...
- 123
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640
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How to install netgear AC1200 (model A6150), wifi dongle
I am trying to install my new netgear wifi usb dongle AC1200 (A6150) on my Kubuntu 20.04.
More specifically my system setup:
mainline 1.0.18
Distribution: Ubuntu 20.04.5 LTS
Architecture: amd64
...
- 191
0
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0
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322
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removing device from device list linux
i am working on a project and after some time i stumble upon the next error:
Unable to get name for joystick /dev/input/js0
Failed to get vendor ID of joystick /dev/input/js0
Failed to get product ID ...
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0
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0
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53
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Viewing digital camera files in Dolphin
I'm trying to view the files on my Canon camera over a USB connection. The camera shows up in lsusb. but not in Dolphin's list of devices. When I first plug it in I get a window offering to connect ...
- 2,093
0
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1
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68
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Create duplicate link for /dev/mapper devices - Consequences
I have an Ubuntu 18.04 server that is not able to perform "sudo apt upgrade" at the moment. It is receiving this message whenever we try to update any packages:
/usr/sbin/grub-probe: error: ...
- 372
0
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0
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70
views
What is a 'Linux Text Console', really?
What dev or resource in Linux actually constitutes being a 'console'?
I have a little, home, Linux box server that I usually SSH into. I connected a TV to an HDMI output and wanted to 'startx' on it. ...
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1
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0
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41
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How to consistently idenfity USB devices with udev
I have a udev rule for a USB cable with 2 serial ports
that successfully matches ttyUSBx to /dev/ttyUCx
KERNEL=="ttyUSB*", SUBSYSTEM=="tty", SUBSYSTEMS=="usb", ATTRS{...
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1
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0
answers
34
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How to build a livecd without dev entry points for local hard drives
I'm trying to create a bootable USB key with "livecd" lubuntu distribution (lubuntu-22.04.1-desktop-amd64) for a specific purpose: a restricted OS for students examinations. I'm almost done ...
- 11
0
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0
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112
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Linux Kernal 5.15.0-50 PCI device enumeration diff. from 0-48
I've been using Ubuntu on a Dell laptop successfully for some time but yesterday when booting the OS seemed to fail to enumerate all the devices.
The symptoms were that the Wi-Fi module, the track ...
0
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1
answer
402
views
How to disable 'Select Audio Device' popup when plugging in a device
I have been on Ubuntu 22.04 for a while now but suddenly I got a OSD popup that gives me an option to select audio input device every time I plug in a audio device.
I've seen ways to disable thins ...
- 401
0
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0
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88
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Ubuntu 22.04 Bluetooth showed No Bluetooth Found Plug in a dongle to use bluetooth
I have been using Ubuntu 22.04 for almost 2 months now I regularly have my Bluetooth speaker connect to it every time but some how yesterday it I can not turn on my Bluetooth for a speaker but the ...
0
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0
answers
1k
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SD Card Reader dissapears on fresh Ubuntu 22.04 install
I just installed Ubuntu 22.04 on a Dell Precision 7750 laptop. In the process of transferring software and files, the SD card was producing errors when unmounting and working unreliable. I will ...
- 117
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1k
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Change device path (/dev/sda) of internal hard drive
On my Ubuntu 22.04 have an internal hard drive connected via SATA. It shows as /dev/sda.
As I am working with various external drives such as SD cards and USB sticks, and writing scripts to format and ...
- 427
2
votes
1
answer
549
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What is difference between /dev/vcs, /dev/vcsu and /dev/vcsa? Why are there so many of them?
I know about vcs and vcsa by reading this but I find nothing regarding vcsu.
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0
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0
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211
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My Ubuntu 20.04 spits out "logger: socket /dev/log: No such file or directory"
I'm a newbie to Ubuntu. I am trying to run a script that needs access to /dev/log when the following error occurred "logger: socket /dev/log: No such file or directory". Any ideas on how to ...
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1
vote
1
answer
3k
views
NVIDIA device doesn't exist!
I posted this question a few days ago.
I tried to reinstall the driver by downloading it from official NVIDIA website and also reinstalling it from Additional Driver app or ubuntu-driver autoinstall ...
- 458
0
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1
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2k
views
Listing device in /dev/ path
I have been trying for several days to get my ESP32 to show in /dev/ttyUSB*
I cannot get it to show at all
I am running ubuntu
If I do lsusb I get
Bus 001 Device 006: ID 1a86:55d4 QinHeng Electronics ...
- 103
0
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1
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749
views
Ubuntu sometimes fails to recognise network card on wake from suspend
Issue
Sometimes, when I wake my computer from a suspended state, it fails to connect to the Wi-Fi and it appears that my computer fails to recognise my network card.
Update 2022-05-25: This has ...
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0
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1
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740
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What is /sys/bus/pci/devices/0000\:01\:00.0/?
Recently I had a problem with the fan working all the time.
Someone suggested to use powertop --auto-tune or to write auto into /sys/bus/pci/devices/0000\:01\:00.0/power/control
My question is:
What ...
- 148
1
vote
1
answer
980
views
Problems with USB in Ubuntu 20.04
After update from Ubuntu 18.04 (where everything worked correctly) to Ubuntu 20.04 I have a problem with USB:
08:59:20 kernel: usb 1-3: 2:1: cannot get freq at ep 0x1
08:59:20 kernel: usb 1-3: 2:1: ...
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0
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3
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122
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Check if a "string" is an existing device name and not a partition name
For example if I have an existing device variable /dev/sda, I want to verify that it is not the name of a partition but of the entire disk.
I have tried this:
[[ $(df --output=source "$var" ...
- 157
0
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1
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158
views
Unmount volume, and dependent mounts
I explain:
Currently I have:
A volume mounted to a directory, /mountDirectory
And I also have a local directory that has a mount bind to a directory on the volume:
/localDirectory mount bind /...
2
votes
0
answers
174
views
No bootable device found on new laptop
I hope you are well,
I have a problem that I personally can't figure out, here I am using a Dell Inspiron 6450 computer in which I have installed Ubuntu 20.04 as the operating system.
I have a new HP ...
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2
votes
1
answer
892
views
lspci shows devices without names, but it did on other OS version with the same kernel
I found out after installation Kubuntu 20.04 with kernel 5.13 that lspci can't identify devices. Now it looks so:
$ lspci
0:00.0 Host bridge: Intel Corporation Device 9a14 (rev 01)
00:02.0 VGA ...
- 45
1
vote
1
answer
510
views
What is the proper way to edit files in the /sys filesystem and have them stick
I was able to get my BlueTooth mouse to stop lagging with the command:
echo 300 > /sys/devices/pci0000:00/0000:00:14.0/usb1/1-14/power/autosuspend
However, I believe that this change will be lost ...
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0
votes
1
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385
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Audio output device missing + Test Audio broken after installing Microsoft Teams
After installing Microsoft Teams Version 1.4.00.26453 (64-bit) on Ubuntu 20.04.3, my audio output device goes missing from the Sound menu of System Settings. I'm using a Schiit Fulla 3 DAC/Amp. I was ...
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2
votes
1
answer
1k
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Browsers can't detect my webcam but it works in cheese
Suddenly, my webcam stopped working in my browsers even though it works if I run the cheese application in the terminal. I am testing it with this website (and many others) on Google Chrome (incognito ...
- 121
1
vote
1
answer
742
views
How can I merge 2 devices to extend my root partition
My root partition is almost full, and I don't have much space in root device /dev/sda5.
I have another device which has space. The device is /dev/sdb1
I want to merge the devices to use the space ...
- 173
1
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0
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184
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How to use external bluetooth (TP-Link) in laptop rather than inbuilt one?
I have a TP-Link Bluetooth 5.0 USB that I want to use with my laptop rather than the inbuilt one. I'm using ubuntu 20.04.
I switched from windows to ubuntu and was using TP-link Bluetooth 5.0 rather ...
0
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1
answer
783
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HP EliteBook 840 G3 Audio No Device
This is a fesh installation on a HP Elitebook 840-G3.
Operating System: Kubuntu 20.04
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
Kernel Version: 5.11.0-41-generic
OS ...
0
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0
answers
479
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Major number 259 on Ubuntu 20.04.3 LTS
If I execute lsblk -p command, the following is the output :
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
/dev/loop0 7:0 0 99,4M 1 loop /snap/core/11606
/dev/loop1 7:1 ...
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2
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538
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What does the “sd” in “/dev/sdX” stand for?
It seems like the answer might be “SCSI Device” from this thread: differences between hda to sd0. I have been searching for a more concrete link.
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912
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Is there a version of XCODE available for linux?
I am a user of Ubuntu-Budgie cuz i really like its Mac like interface.
Recently I've started my development career in Flutter. I have set up an Android Emulator on my device for testing purpose but i ...
0
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0
answers
25
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How to make mounting a certain device read-only? [duplicate]
When I connect my camera to my Xubuntu 18.04 computer, it's mounted with write permissions, which isn't exactly desirable. How can I make it so that it, and any other camera, will be mounted read-only?...
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1
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299
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How do I read raw input from a USB device's buttons and translate that into keypresses?
I've been trying to figure out the best way to interface the buttons and a touch strip on a Huion Kamvas 12 graphics tablet with my ubuntu installation. Whilst I was able to get the pen to work with ...
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