Questions tagged [drivers]

A device driver or software driver is a computer program allowing higher-level computer programs to interact with a hardware device.

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LLinux Device Driver interfacing

In device driver programming we are using following items: Device driver code Device file Actual physical Hardware (till now not used in my coding) User space application code What I understood is ...
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Debian: unable to install lsb package

I have an Epson ET-2600 printer at home. I tried configuring it using CUPS, but the printing is very slow and constantly in a very high quality (which results in a lot of ink being wasted). I tried to ...
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Linux mint: Installing Recommended Nvidia Drivers results black screen

I've installed the latest Linux Mint 19.2 on my system, but I'm facing a problem when trying to install Nvidia drivers. All i did was to open the Device Manager and select the recommended ndivia-340 ...
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how to use the intel graphic chipset driver on debian,instead of the nvidia graphic card and driver

I'm running debian 10 on a I9-9900k + gigabyte aurus pro (with the intel graphic chipset integrated) + nvidia RTX 2080ti graphic card. I have two monitors. I have attached the monitor A with the HDMI ...
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how to remove really the nvidia driver from debian 10

I'm trying to remove the nvidia driver from my system (running with debian 10). I tried several methods,but unsuccesfully. Something like these : apt remove nvidia-driver apt-get purge nvidia-driver ...
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How does a keyboard press get processed in the Linux Kernel?

I'm currently learning about the Linux Kernel and OSes in general, and while I have found many great resources concerning IRQs, Drivers, Scheduling and other important OS concepts, as well as keyboard-...
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Adding entropy to /dev/random

I'm in the process of designing and building a quantum random number generator for high security applications (and potentially data centres). As part of this, I would like to feed the random numbers ...
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I can't get DWA-171 rev. C1 to work on my raspberry pi

I've been trying to get this wifi adapter to work on my pi, I think I finally got a driver to install using this on ubuntu server: https://github.com/whitebatman2/rtl8821CU, but I've run into an issue ...
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How to get these details in linux

from which pool dma_alloc_coherent allocates? how to know the maximum memory that can be allocated in single call? how much memory in total is available?
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Installing Proprietary Windows Drivers on Linux

I have a PC Oscilloscope Instrustar ISDS205X which I used on Windows 10. Now that I have switched to Linux, I am unable to find the respective drivers for it. I have tried installing it on PlayOnLinux ...
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VirtualBox 6.0 video adapter for Debian 9 guest

I run a Debian 9.0 guest in VirtualBox (2 CPU, 8 GB RAM). After upgrading to VirtualBox 6.0.12 r133076 (Qt5.6.2) I got a warning on startup about the VBoxVGA graphic adapter being abandoned with VB 6....
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How can I exclude drrivers that are reserving and handling my embedded board GPIO

I am using SAMA5D27-SOM1-EK1 embedded board. I used YOCTO project to build Linux Operating System. When I show up the list of GPIOs existing on my board, I see that some of them are " USED ". ...
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Synaptics Touchpad effect of Tap delayed - Ubuntu 19.04

There is a significant amount of delay between when I tap and when it registers. libinput works fine when it comes to taps. Other similar questions are outdated and talk about options which do not ...
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Throw/cast mouse pointer with the touchpad

I read that many touchpad "gestures" are supported by touchpad drivers, like 'scrolling', 'swiping', 'palming', 'circular whatever', etc. But I can't figure out a keyword refering to the one gesture I ...
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How can I check if I have any missing or upgradable driver on linux? | DEBIAN 10

Laptop: Asus TUF Gaming FX504GD With lspci for example you can check some hardware, and then you can browse the internet and find the drivers to install. But I would like to know if there is any way ...
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Problems with Wifi driver on ASUS TUF Gaming FX504 | Using Debian 10

I'll show you the complete output of lspci so you can see which wireless network card this PC has: 00:00.0 Host bridge: Intel Corporation 8th Gen Core Processor Host Bridge/DRAM Registers (rev 07) 00:...
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Linux SDK for printers

This question is to help me and other beginners like me get a better understanding of Printer drivers/SDKs for the Linux environment. I have been trying to integrate barcode printers(like this) with ...
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How to use cdc_ncm driver instead of cdc_acm in ModemManager

In Ubuntu 16.04 I try to use a USB modem in NCM mode. But ModemManager uses automatically the cdc_acm driver which creates a PPP interface. lsusb shows 6 cdc_acm devices and 1 cdc_ncm device. How can ...
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Can't get modules in /lib/modules loaded during startup

I used to have an Ubuntu installed in an ARM (32 b). The drivers needed to run the system were copied in the folder "/lib/modules" and loaded during the startup. Due to a hardware update, I have ...
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How to install the latest Nvidia drivers on Linux Mint 19

I have a Linux Mint 19.2 (Tina) wich is Ubuntu 18.04 based. Objective To install the latest Nvidia drivers for my GeForce 1060 laptop card. Status If I run the Mint's Driver manager, there is only ...
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Pantum P2502W printer driver for Fedora?

I have a Pantum P2502W black and white laser printer which has Ubuntu drivers available for it: https://global.pantum.com/global/drive/p2502w/ I have found reference for users getting it to work ...
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RS485 hardware RTS on SC16IS752 not working when it is enabled in device tree overlay

I'm trying to make SC16IS752 (SPI to UART converter) work in RS485 mode by using device tree overlay (without running C application at boot). I took original overlay source for SC16IS752 from ...
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WLAN that worked with Ubuntu doesn't with Centos 7

I've got a Dell Inspiron 1545 with a Dell Wireless 1387 WLAN. The WLAN worked fine with Ubuntu but is not recognized with Centos 7. I've already tried installing the Network Manager package. Seems ...
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Switch device driver from UAS to usb-storage using unbind/bind

Sometimes the UAS driver for Linux is buggy and I need to use the usb-storage. In the past, I've done this by putting an entry in /etc/modprobe.d specifying quirks for the SATA/USB cable connecting ...
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USB device not acknowledged

I have a USB device (a new "B-L072Z-LRWAN1" demo board from ST Micro) When I plug it in the board boots and LEDs start blinking, but ubuntu (18.04.3 LTS) does not react at all. The board never ...
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How Linux links driver with device file?

I have a question about device file and drivers, based on ULK hence 2.6.11 kernel. My understanding is the following: When user does syscall open() on some device file, at some point kernel will ask ...
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Proper (working) way to return an int pointer through STREAMS?

I had been doing some work with an old SVR4 box with serial i/o when I found that the driver for the serial card did not support TIOCMGET through an ioctl call (e.g. ioctl(fd, TIOCMGET, &arg);). ...
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Second Monitor Is Not Detected On Debian [Buster]

I recently installed Debian 10 and I can not get my second monitor work. This is my xrender output: Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 eDP-1 connected primary ...
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How linux put SMBIOS information to /dev/mem?

I checked the dmidecode source code. I saw this: int fd=open("/dev/mem", O_RDONLY); long fp=0xE0000L; It looks like Linux already copy SMBIOS information to memory?
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IIO Blocking Read

I've been working on an Industrial IO device driver for an analog to digital converter. In my application code, I am using a multi-threaded process by triggering the device on a loop to feed data ...
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How to include Nvidia driver when installing Linux?

Long story short, I'm trying to run Linux on my laptop and it's not quite working out. I've figured out the cause - Nvidia driver. How did I find out? Because Pop_OS with Nvidia driver is the only ...
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Debian 10 Very Slow Upload

I installed a fresh install of Debian 10 buster on my z97x system. My home connection is 300Mbps download and 15Mbps upload. I used speedtest to measure this. Selecting the same server using speedtest-...
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USB 3.1 ports is recognized as USB 3.0 in ArchLinux

My PC is built on ASUS Z170i. It has two USB 3.1 Gen2 / 10 Gbit/s ports.  The port is showed as a USB 3.0 port and speed of this port is 5000 M.  How to make this port displayed/running in USB 3.1 ...
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Video playback not working/choppy in Linux Mint 19.2

I have a problem with Linux Mint and video playback. The issue is that opening any .mp4 from disk (don't have any other filestypes) results in video player crash. Tried many different players like ...
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is there a way to create sysfs parameter from userspace? [duplicate]

is there a way to create sysfs parameter from user space? Usually kernel driver creates it and we can access it from userspace. but in my case driver is sitting in userspace so was wondering if there ...
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195 views

Dual screen alignment problems on Ubuntu MATE 18.04 (images provided)

I have been trying to get two screens with different resolutions to work in the configuration shown in the images below. Plain Ubuntu had no problems making them play well together, yet on my new ...
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Linux usb wifi adapter not working - rtl88x2bu

I recently got Linux installed on my laptop and noticed that I couldn't get wifi connection because "No wifi adapters found", and so I bought a USB wifi adapter online(here). I looked online for ...
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How to read data from one userspace app to another userspace process

From userspace application I read some data using IOCtl from kernel driver synchronously. Now Iam planning to move the driver to userspace. Is there a way for my userspace app to read some data from ...
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debian no wifi button and no wlan0

Recently installed debian and i have no wifi and wlan0 output of ifconfig: enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.0.193 netmask 255.255.255.0 broadcast ...
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How to find and install missing firmwares in debian

I installed my debian few days ago, and I had error messages saying that firmwares were missing. I managed to solve this problem by adding manually them into the /firmware folder of my bootable usb ...
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How to check if the floppy driver is installed?

How can I check if the floppy driver is installed on my Debian system? I already used the following commands: find /lib/modules/$(uname -r)/kernel/ -name '*.ko' | grep floppy ls -l /lib/modules/$(...
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Can't build rtl8821ce driver for debian 10

I tried installing the endlessm and tomaspinho driver, i got the same error after finishing the make: /home/wjm/Templates/rtl8821ce-git20190810/os_dep/linux/rtw_android.c: In function ‘...
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externally supported module, setting X kernel taint flag

Does this mean a driver is not from the original OS-distributor, the kernel becomes a tainted kernel? What does 'X' mean? I didn't see an explanation for 'x' ref: https://www.kernel.org/doc/html/v4....
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Linux Mint 19.1->19.2 upgrade broke Cinnamon - driver issue?

Updating broke Cinnamon for me. I was on 19.1 Tessa, Cinnamon edition, and updated to 19.2 through the Update Manager. Now when I boot I get the message “Cinnamon just crashed. You are currently ...
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Ways for drivers to exchange data with userspace

I have two questions: (A) I am trying to identify the various options available for a Linux device driver to exchange data with userspace. A common approach I am aware of is copy_from_user() and ...
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Can't Install rtl8821ce driver

I've been trying to install the rtl8821ce driver for my linux mint laptop. So far, the instructions I've been following make sense, but when I try to run sudo make or just make I get the following ...
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Blacklist UAS by device serial not by VID:PID

I often deal with hard drives that need to connect specifically using usb-storage and some specifically with UAS. Up till now, I've done this by putting an entry in modprobe.d, like options usb-...
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USB HID driver data sniffing

I need to communicate with a proprietary HID device. I don't have a driver for it, nor documentation on its communication. I did however obtain some compiled code that configures the HID device and ...
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1answer
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Black screen with mouse pointer on boot, KDE Neon

Preface: I have a Lenovo Z50, 4GB RAM. I tried installing KDE Neon 5.15.4 (based on Ubuntu 18.04) on it, but I am getting problems. I am a noob, so question may be over-descriptive. Problem: The ...
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Overclocking laptop monitors on Linux?

Is it possible to overclock a laptop monitor which uses integrated Intel graphics on Linux? I've seen tutorials on how to overclock laptop monitors, though all of them use Windows exclusive tools. ...