Questions tagged [devices]
devices refers to questions about the Unix/Linux device special files, normally these are under /dev. Do not use this tag for physical devices (for that use e.g. usb or pci).
859 questions
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DSLR as USB webcam (gphoto2 and v4l2loopback) not working in Brave and Chromium, but perfectly in Firefox
I use gphoto2 2.5.28-2build2 and v4l2loopback 0.12.7-2ubuntu5 in order to use my Sony A6500 DSLR as a USB webcam in Linux Mint.
Just to make this clear from the start, the camera is working but the ...
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How to find device name of boot drive
I have two NVMe drives in my Proxmox computers. My problem is that the drive names are not persistent and change in connection with reinstallation or reboot. The problem is not specific to NVMe drives....
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Does a linux bridge's port have its own mac address?
On my Linux Ubuntu I've a Linux bridge vnet0_6. You can check the mac address of each of the two interfaces attached to bridge's ports.
root@eve-ng62:~# brctl show vnet0_6
bridge name bridge id ...
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Questions on the 'evtest' command [closed]
I'm working on a project that aims to use a small (6-key keyboard) to control music played by mpd (and mpc) on a Raspberry Pi. Obviously I need to "capture" the keyboard inputs, and ...
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Root filesystem is completely full [closed]
everyone.
I have a completely filled root filesystem, but I can't figure out what it is.
sudo df -h /
/dev/nvme0n1p2 49G 49G 0 100% /
sudo du -h --max-depth=1 --exclude="media" --...
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How do I get rootless podman to work with nvidia gpu after reboot?
I have a RHEL9 system with a NVIDIA L40S and Driver Version: 570.124.06 CUDA Version: 12.8.
Installed as described here by (basically) running:
# dnf config-manager --add-repo http://developer....
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Cannot fully disable Systemd service bound to USB keyboard device
I wrote a Python script to manage keyboard events using python-libevdev, although I don't believe the script itself is related to my problem.
I configured udev and systemd to automatically start/stop ...
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Power button used for both suspend and wake up: device suspends again right after waking up
I have a Lenovo Duet 3 with PostmarketOS 24.12 aarch64, GNOME 47 and openRC. The tablet has a power button which suspends the tablet to RAM when pressed, but when the tablet is suspended it is also ...
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Why can't sed change /dev/zero's output characters to something else?
This works
head -c 10 /dev/zero | sed 's/\x0/x/g'
and generates xxxxxxxxxx as expected.
Then I tried this:
sed 's/\x0/x/g' /dev/zero | head -c 10
which seems to just hang.
Then I thought, oh, sure, ...
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IO wait/failure timeout on iscsi device with multipath enablement
I'm accessing a remote iscsi based SAN using multipath.
The network on the server side has known intermittent issues such that there are session failures and path failures/IO failures. I'm not trying ...
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How to change the timeout for an inquiry command
I'm getting timeouts on inquiry while a write buffer is active because the device cannot respond to the inquiry until the write buffer is complete.
See errors .
Dec 10 16:04:39 soul kernel: sd 0:0:34:...
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How to define GPIO pin as PPS source device
I'm using Linux in an embedded environment. I want to use a particular GPIO pin as a PPS source to be used with gpsd. I think the pin is configured correctly because I can see high/low transitions ...
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How to intercept force feedback events between an application and a gamepad?
I want to be able to intercept a FF (force feedback) event (vibration/rumble in this case) that would normally go directly to the gamepad device file, to send an event to some other device while ...
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Device name of a Linux system required for identifying it as an "allowed device" on a WiFi hotspot?
I want to add a Linux system to the white list of a WiFi mobile hotspot running on Android. Doing hostnamectl returns, amongst other information, a Static hostname, an Icon name, a Machine ID, and a ...
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What do the hexadecimal numbers represent on the ls output of the /dev directory?
When I run ls -l /dev on my Ubuntu, I get output like this:
$ ls -l /dev
total 0
crw-r--r-- 1 root root 10, 235 Aug 24 16:36 autofs
drwxr-xr-x 2 root root 340 Aug 24 16:40 block
crw------- ...
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