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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How come BSD has less driver support than Linux? [on hold]

BSD can easily use Linux binaries... So how come BSD has less support for graphics than Linux? Isn't it just a matter of porting the driver to BSD, which means BSD should have the same support for ...
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13 views

Building a physical and ethernet drivers on embedded device

So, I am working on an embedded device Devolo dLAN wifi 500, running a linux kernel version 2.6.31. It has an atheros chip ar7240. I have root access to it and can modify its contents. (And now for a ...
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8 views

Manually set USB data pin value?

I'm making a USB device that will only have an active/inactive state. Not having to interpret serial data will reduce the size/cost/complexity of the device significantly. Is there any reasonable way ...
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2answers
34 views

Wifi is not working on Linux Mint

I have a Dell Latitude E4310 laptop which ran Ubuntu for the last 4 years (with various versions). Recently I have installed Linux Mint (version 17), and afterwards the WiFi is not working. It was ...
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0answers
10 views

How to handle multiple users for a device driver [migrated]

I am learning to write device drivers. I came across a scenario where there are multiple programs which want to write to the same driver. Instead of showing them a busy error, I would like to place ...
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18 views

No sound on detected headphones (arch)

alsamixer and pavucontrol shows everything is detected and unmuted. The speaker on my Laptop are working, only the headphones are detected and on mute or unmute I hear a short crack and nothing ...
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8 views

Arch Linux SMBus and Display Controller

I have installed Arch Linux on an Acer Extensa 5620 Notebook. I installed xf86-video-driver, but when a run lshw -html > report.html I'm getting these sections marked red. Does it mean I don't ...
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21 views

Which driver/file ( deb or rpm ) should I download for printing and how to install it?

I would like to ask which driver/file ( deb or rpm ) I should download for printing and how to install it on Crunchbang? Canon PIXMA MG2450 First I tried to try out System > Printers> Install ...
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6 views

intel_pstate driver drives me crazy

i've got some problems with the intel_pstate driver. Problem 1) I can't disable Turbo. It's disabled in the BIOS & via: root@think:~# cat /sys/devices/system/cpu/intel_pstate/no_turbo 1 ...
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29 views

How to setup “Creative Sound Core 3D” on Debian Jessie correctly?

I justed installed Debian Jessie and was happy to see (or hear) that my Creative Sound Core 3D (as onboard chip on my Gigabyte GA-X99-Gaming 7 WIFI mainboard) worked out of the box when trying to play ...
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1answer
26 views

Linux driver privileges

I've loaded a custom driver to linux via mknod. However, now any programs I write to use it need to be run using sudo, which is difficult to do when I'm using an IDE. Is there any way to adjust the ...
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1answer
78 views

“Distribution not supported” during installation of Intel drivers

Trying to install Intel drivers on my Elementary OS system based on Ubuntu 14.04, using the 1.0.7 64 bit installer, it comes up with an error saying this Distribution is not supported, after a quick ...
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12 views

Installing huawei Linux driver on fedora 20

I want to use huawei e303f data card on fedora 20 32 bit. I have downloaded the Linux huawei driver. But when I try to install it , it pauses for an indefinite period after the line that's reads '1:4 ...
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13 views

Platform Device Drivers

I was just going through the code of kernel. I have a raspberry Pi board. I want to interface the touch screen with my board. I want to develop the Platform driver for that. As per the documentation ...
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31 views

Need Debian driver for DWA-130 rev F1

Can't get my wireless adapter working. It's D-Link DWA 130 rev F1. There's a good deal of discussion about this in the Ubuntu world, but it doesn't seem to work on Debian. The chip-set appears to ...
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0answers
27 views

Linux Driver for USB “reverse” mass storage device

I'm developing a USB device that I want to read and write in virtual filesystems that are in my computer. Basically the device needs to be able to read, write and get the virtual filesystem size. Some ...
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12 views

How to make controller driver work with new system

I have an old SuperMicro server: X7DB3 From the link I can find the AIC-9400 driver for old version of CentOS/RedHat and SuSe driver. It works with CentOS5.4. But when I install newer version it ...
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11 views

in realtek 8139cp driver code, where does the start_xmit function triggers the chip?

Hope somebody could give me an explanation. I was looking at http://lxr.free-electrons.com/source/drivers/net/ethernet/realtek/8139cp.c#L731 and found in cp_start_xmit(..) function, there are all ...
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2answers
34 views

why do some network cards need to load external firmware?

I have read this question/answer, but I still do not understand why some network cards work perfectly well without any additional firmware, whereas others need to load firmware to work. As a specific ...
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1answer
90 views

Linux - rendering performance after switching from nvidia to nouveau drivers

I use UBuntu 14.04 LTS. I have purged all nvidia proprietary drivers and currently my system use Nouveau driver. Here is an output from glxinfo | grep OpenGL : when using nvidia propietary drivers ...
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1answer
38 views

Set NetworkManager to ignore rfkill

My notebook does not have a hardware button to disable wireless. But NetworkManager and rfkill see wireless as hard blocked. Wicd and iwconfig works well. Is there any way to disable hard block check ...
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0answers
81 views

UBuntu 14.04 LTS - switching between nvidia proprietary driver and nouveau driver

I use Nvidia proprietary drivers but I also have installed nouveau driver. How to switch to nouveau driver and then back to nvidia driver without uninstallling drivers ? Reboot is acceptable. By ...
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211 views

Debian 8 Jessie and NVIDIA drivers

I am in the process of installing Debian 8.0 on a laptop with NVIDIA graphics cards. After a successful installation and reboot I use this guide to install the proprietary NVIDIA drivers; essentially ...
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46 views

How to install Canon PIXMA MG2450 driver in Arch-based system?

I have the drivers as source, deb, and rpm. Download page HERE. I have tried to create pkg.tar.xz file out of the deb files. I have used debtap following these instructions here to "convert" the ...
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34 views

How to install graphic capabilities to CoreOs?

I would like to install CoreOs as a base on my desktop machine. Then, I could launch some containers, with eventualy a graphical environnement. So I have to add all the graphic stack: GPU drivers, ...
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59 views

ATI Radeon HD4850 drivers on linux?

I went online and searched, and I found a command to install drivers. But it turns out I already have them, but it still doesnt work? Is there any settings I need to work on? My commands ...
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1answer
114 views

extension GLX missing on display

I have a computer with broken graphics here. It's running openSUSE 13.2 (x86_64). When a 3D application (paraview in this case) starts up it complains: extension "GLX" missing on display ":0". Xlib: ...
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39 views

WiFi unable to connect after sleep ath9k

When I put my PC to sleep and wake it up, it cant connect to WiFi anymore. Sometimes it asks me 5 times to re enter my password and if it manages to connect connect the ping is 2000+, iwconfig says ...
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1answer
34 views

How to get a list of major number -> driver associations

http://www.nostarch.com/tlpi states: "Each device driver registers its association with a specific major device ID, and this association provides the connection between the device special file and the ...
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56 views

USB to UART converter is lagging

I have a USB to UART converter with CH341A chip on it. This device can be used as a USB to UART converter, as a 24/25 chip programmer and as a USB to PARALLEL converter. The problem is with the UART ...
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1answer
28 views

How do I understand if an USB Ethernet adapter is compatible with a certain kernel version to use it to load kernel/filesystem?

I'm using an old kernel, 2.6.32, and I would like to boot the kernel over TFTP and mount the filesystem over NFS. Mounting the kernel over TFTP is a plus, but mounting the filesystem over NFS is a ...
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1answer
157 views

Cannot install AMD GPU driver correctly on a hybrid laptop

I was installing AMD gpu driver but the default display driver (Gallium 0.4 llvmpipe) wont get replaced. Btw, My laptop has both Intel and AMD gpu. The system uses Intel gpu by default with the driver ...
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29 views

Nvidia Fx 3800 drivers on Fedora 21

I have got a "new" machine at work and wanted to switch it to fedora 21. The installation is fine and works except when I try to add a second monitor. Then it boots but it is really slow and just one ...
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1answer
34 views

Network UNCLAIMED - Unable to access internet

My Kubuntu was working well until I think a day ago, and suddenly I don't have access to Wi-Fi. I've tried turning on the connection via the Connection editor but the box was grayed out. After looking ...
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1answer
124 views

Compile network card driver on debian

I buy a new network card , D-Link DGE-528T. My OS is Debian(Jessie) kernel : 3.16.0-4-amd64 but it can't detect the new network card, so I must to compile driver by myself. follow README file. ...
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1answer
48 views

How does ath9k introduce itself to mac80211?

My question is about Linux kernel and ath9k wireless driver: How does ath9k announce itself to the mac80211? How come the mac80211 knows how to configure ath9k? Thanks in advance
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0answers
37 views

How to diagnose display issues in linux?

I have recently upgraded my system to Debian Jessie (testing) and everything went smoothly, except the occasional distortion when the screen is updating. When a part of the screen needs to update, ...
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1answer
30 views

Kernel Firmware for Radeon

I'm building LFS. I was trying to enable Ati radeon drivers in the kernel, but it didn't seem to work, so I did a little Googling and found that the there is something called firmware which the kernel ...
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1answer
35 views

Do I have more thn one wireless driver modules?

$ lsmod | grep iwl iwldvm 232283 0 mac80211 652718 1 iwldvm iwlwifi 179412 1 iwldvm cfg80211 494362 3 iwlwifi,mac80211,iwldvm I heard that ...
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3answers
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Is USB-to-USB data transfer between two Linux OSes possible?

I want to create a USB-to-USB data transfer system in Linux (preferably Ubuntu). For this I want to use no external hardware or switch (except this cable). It's going to be like mounting a USB drive ...
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2answers
34 views

Find SAS controller that is well supported by the linux kernel

How can I find a SAS controller that is well supported by the official Linux kernel? The controller should use the PCIe bus and needs to connect one LTO-6 tape drive. I have looked through the ...
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0answers
55 views

Install firmware for Netgear WNA1000M on Debian (Jessie)

I'm trying to make my wifi dongle work on Debian: it is a Netgear WNA1000M. If found many "solutions" on forums but none seems to work. I initially bought it for my Raspberry Pi with Raspbian and it ...
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17 views

Plugged mouse increases boot time

I was going through the output of dmesg -e and found that my logitech mouse is increasing boot time by around 7 seconds and my total boot time is around 45 seconds. [ +7.334661] usb 1-1: new ...
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0answers
18 views

X11 hangs, leaves me with black&white text display, Intel i915, precise1-Ubuntu

I am running a Bodhi derivative Ubuntu, ("tainted") based on Precise, on an Acer Chromebook. After a system update, X11 dies, leaves me "hung" with text display. If I reboot in recovery mode, and ...
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1answer
175 views

Is there a way to determine what kernel version a kernel module was compiled against?

I have recently been playing around with creating kernel modules using some crosstools for an embedded setup. It would be helpful to me in future to have the ability to identify the version of the ...
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1answer
363 views

broadcom BCM43142 under kali linux

I am trying to get the wireless card of my laptop (Broadcom BCM43142) to work under kali linux (latest version, 64bit). At the moment (without installing anything), it is not recognised at all. I have ...
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GDM UI screen update is jittery with Kernel 3.4 with N2600 ATOM processor

This is in continuation to my earlier post : Upgrading guidance for Cedarview driver in Debian 6 - 2.6.32 I recently updated my kernel from 2.6 to 3.4 (Just for making N2600 chipset detect my ...
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1answer
62 views

Simulating Signal Strength Changes to wpa_supplicant

I am working on a research project whose goal is to make testing alternative fast WiFi handoff (akin to 802.11r) protocols/algorithms easier. The way I plan to accomplish this at a high level is to ...
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2answers
221 views

How do I compile an out-of-tree kernel driver on Fedora to fix super-slow wifi?

I have a HP laptop with Network controller: Realtek Semiconductor Co., Ltd. RTL8188EE Wireless Network Adapter. The laptop came with Windows 8.1 and the wifi worked just fine, but since I wanted to ...
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1answer
81 views

Upgrading guidance for Cedarview driver in Debian 6 - 2.6.32

Our system runs with Debian 6 squeeze (2.6.32) Kernel with N2600 hardware. I know the version is old. An upgrade is in later plans. Recently, we tried connecting multiple monitors (CRT and HDMI), and ...