Questions tagged [devices]
The devices tag has no usage guidance.
337
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How to know which "version" of USB a device is attached as
What the title says. Is there a way to know if a USB device is registered as oldschool/original USB, USB2, or USB3 etc? I'd guess either from virtual files under /sys or maybe dmesg/kernel logs?
- 345
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0
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109
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How to completely disable / delete the mouse on Ubuntu?
I tried a few approaches like xinput list and xinput disable but still can't get to completely disable the mouse (touchpad or any other pointer input) on my Ubuntu machine. Does anyone know how to do ...
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25
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How to set device by device whether audio output should switch upon connecting
Is it possible on Ubuntu 20.04 to automatically switch the sound output device for some devices and not for others?
Specifically I want to switch to some devices such as headphones but my screen for ...
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111
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help interpreting lspci output re: suspend issues with 2016 MacBook Pro
I'm trying to determine why my MacBook Pro (late 2016, MacBookPro13,1) has issues (multiple) when being suspended / waking up. This is one symptom I'm observing.
Using dmesg, I see these messages ...
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36
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Select audio device appears every time
Select Audio Device appears every time, but I'm not disconnecting anything. I select an option and 1 second later the modal appears again, I don't remember changing anything in my settings and the ...
- 161
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120
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unable to detect SSD
Optiplex 3090 Micro
SATA SSD installed in Optiplex
Ubuntu USB installer
The USB installer boots, however the Ubuntu is unable to detect the SSD.
cat /proc/partitions
returns only the USB device: /...
- 6,017
0
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2
answers
104
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Help detecting a USB plotter device to pass through on VirtualBox
I am using Ubuntu, but have a USB plotter I need to use occasionally that works best with software that only runs in Windows. I thought a good solution would be to use Windows as a guest in ...
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5
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1
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544
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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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56
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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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112
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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", ...
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0
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1
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127
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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 ...
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1
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0
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262
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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, ...
- 11
0
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1
answer
108
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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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92
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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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0
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57
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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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1
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3k
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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
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1
answer
4k
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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 ...
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2k
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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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740
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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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1
answer
114
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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: ...
- 431
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0
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128
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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. ...
- 101
1
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0
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69
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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
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39
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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
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1
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1k
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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 ...
- 451
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104
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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
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2k
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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 ...
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1
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0
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2k
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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 ...
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2
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1
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1k
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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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359
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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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2
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2
answers
6k
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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 ...
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1
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3k
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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 ...
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0
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1
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978
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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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1k
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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 ...
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1k
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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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3
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280
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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" ...
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1
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279
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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 /...
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2
votes
0
answers
199
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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
2k
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 ...
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1
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1
answer
1k
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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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votes
1
answer
580
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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
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1
answer
2k
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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 ...
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1
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1k
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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 ...
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0
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204
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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
1k
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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
823
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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 ...
- 101
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2
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1k
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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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26
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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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566
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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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0
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939
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How to make Bluetooth RFCOMM device persistent across restarts
I am using an HC-06 bluetooth device to communicate from a peripheral to a Ubuntu 20 program using the PCs internal bluetooth device. The Bluetooth desktop manager has paired it. From terminal, I can ...
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0
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447
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7 unclaimed devices in lshw output
I have seen some similar questions to this but I have never seen one with as many unclaimed devices in the lshw output, I am wondering if this is normal. I know that unclaimed means that there is no ...
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