This tag is for questions about the internals of the Linux kernel itself - particularly about use or configuration of kernel modules or drivers.

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0answers
34 views

pppd retry issue with multiple wan interfaces

I am using two wan connections in my router with linux kernel 2.6.21. PPPOE Ethernet cable and 3G connection. Both need ppp setup. But boot sequence is different for both. many times 3G disconnect and ...
1
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1answer
48 views

Linux NTFS-3G General Protection Fault when using OS X in VirtualBox

I have an OS X virtual machine in VirtualBox on a Debian host. The disk image is located on an NTFS partition (which is not the system's root partition), mounted using NTFS-3G. The machine was ...
2
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0answers
119 views

Chipsee 7 inch LCD support in Linux kernel 3.14

Has anybody ported Chipsee 7 inch LCD on Linux kernel 3.14 or later ? Is there any patch available for the same ? If no patches any suggestion porting Chipsee LCD support from Linux kernel 3.8 to ...
3
votes
1answer
2k views

How do I stop rfkill module from hardblocking my wifi, without rfkill command?

I went into my BIOS the other day, didn't change anything, and rebooted. After this, my wifi was hardblocked. I looked online for solutions, and learned of the rfkill command. But I get rfkill: ...
0
votes
2answers
73 views

installing linux without any packages

I am programming a OS based on Linux but I want to "re-invent the wheel" in this OS just as an achievement. I have been told that Linux can be installed on a PC without any packages (obviously causing ...
0
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0answers
52 views

Switch off WIMAX/Wifi Intel 5150 chip under Linux

How switch off WIMAX/Wifi Intel 5150 chip under Linux using command or utilities? I recompile Linux kernel without WiMAX support, but indicator lights on the front panel of my notebook. P.S. Is it ...
1
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1answer
159 views

Install recent linux version in old computer?

I have tried to install several distros and versions of linux (Ubuntu and Lubuntu, from 13 to 14.04, and Mint 17) without success. Everytime the system blocks while loading the installation. I can ...
0
votes
1answer
56 views

Upgrading Linux kernel module without reboot

Is there any way to upgrade linux driver module without rebooting the system ?
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0answers
284 views

/sbin/init exists but couldn't execute it

I'm building Linux from scratch. Currently I have the kernel, glibc and sysvinit. I've compiled everything myself following these instructions. Though my version of glibc is 2.19. Also, I use grub ...
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0answers
216 views

Hide all kernel boot messages/logging when disabling splash screen Lubuntu 14.04.1

In Lubuntu 13.10 I was able to redirect the kernel messages/logging to another tty by adding the following to the Grub file in order to hide all kernel boot messages when disabling the splash screen ...
0
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0answers
454 views

Disable TCP keepalive on RHEL6

Is it possible to disable TCP keepalive on RHEL6? I know the kernel parameters for tuning TCP keepalive timeout are as follows: net.ipv4.tcp_keepalive_time net.ipv4.tcp_keepalive_intvl ...
0
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0answers
56 views

Xen E820 memory map for domU kernels

How does xen handle E820 memory map for domU kernels? In my specific problem I am trying to map Non-Volatile RAM to domU kernels. The dom0 memory map returns the following relevant parts. ...
0
votes
1answer
200 views

Can't load tun module in Linux

I am trying to set up a VPN connection, but OpenVPN fails with ERROR: Cannot open TUN/TAP dev /dev/net/tun: No such device (errno=19) modprobe tun has no effect, and modinfo tun shows that the ...
13
votes
2answers
5k views

Directory - /sys in linux

Can anyone explain me what is going inside the /sys directory on a Linux system? I Googled it and got some results, but I need a clear mind on this. Is there anyone ready to give me a short (and ...
0
votes
0answers
238 views

How may I mount a disk with a Apple / Mac partition table (APM) in Linux?

I've backed up some files from a old Powerbook G4 (AluBook), and I used the Mac Partion manager or whatever to first initialize the disk. It worked, originally, as one large volume, and I copied ...
4
votes
1answer
1k views

IPsec in the Linux Kernel

I have some issues (questions) related tot the Linux Kernel implementation of IPsec and it's user-space interface. The biggest question is which is the actual official project for the Linux Kernel ...
0
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0answers
11 views

How to install cached linux debug symbols?

I am doing work which requires downloading and installing debug symbols multiple times for a specific linux kernel i.e: linux-image-3.8.0-26-generic-dbgsym I'm on a fast university fiber network. ...
4
votes
1answer
737 views

What is the exact difference between the parameters (pgpgin, pswpin) and (pswpout, pgpgout) in /proc/vmstat?

Please note that this question is specific to linux only. And by swap space, I mean the dedicated swap partition. I did google a bit on this, and found these definitions: Paging refers to writing ...
1
vote
1answer
161 views

CONFIG_CMDLINE_OVERRIDE set but hardcoded vga-boot-parameter ignored?

I have build a custom linux kernel with the options: ... CONFIG_CMDLINE_BOOL=y CONFIG_CMDLINE_OVERRIDE=y CONFIG_CMDLINE="initrd=linux_os.gz root=/dev/ram0 init=/sbin/init ramdisk_size=25600 ...
2
votes
1answer
3k views

dkms does not find kernel source

For days now I am trying to get ZFS-on-Linux working on Debian 7 but the module doesn't want to compile: # dpkg-reconfigure zfs-dkms ------------------------------ Deleting module version: 0.6.3 ...
1
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0answers
25 views

How to disable USB Mouse only

I was developing a device driver for a USB mouse which uses the USB HID driver. The problem is that I cannot test out my module as Linux takes over the mouse directly. So how do I find out which ...
0
votes
0answers
57 views

What HID/Module does Air mouse use in Linux?

I was thinking about developing a module for running a Air Mouse. I am not sure as what module s used to carry out the operation done by air mouse. Is it under HID? (I am talking about a wireless Air ...
0
votes
1answer
176 views

How to rewrite ACPI control tables from Linux?

I have a HP Probook 4720s laptop with broken ACPI tables. The fan is always switched off and the computer tends to overheat and shut down. Under Windows I can use a program called RW_Everything to ...
0
votes
2answers
112 views

Why does the /dev directory exist?

In Linux, there is the /dev directory, which is a special directory which contains all of the files for devices and other things like random, urandom, etc. Why did this directory exist? Was it just ...
0
votes
1answer
397 views

NO <DUTY, RUN, PERIOD, POLARITY> in bone_capemgr.9(ocp.2/pwm_test_P8_13.#)FILE Beaglebone Black

I just a fresher did the servo test with my BBB, however, when I use some command as ...
0
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0answers
151 views

How to install kernel 3.9 in Debian Jessie from repos?

I was wondering if it is possible to install kernel 3.9 in Debian Jessie from repos. A brief check shows that there are only 2.6, 3.2 and 3.13 kernels in repos Compiling my own kernel is the last ...
0
votes
1answer
79 views

How to add code into the linux kernel?

I am studying how to analyse and evaluate the TCP/IP protocol stack of Linux. My goal is to study the performance of the tcp/ip protocol stack as a whole, to study the time cost of each layer and ...
0
votes
1answer
444 views

Error in kernel 2.6.32 compilation and stable kernel 2.6.32 source needed for customization

I am using Ubuntu 10.04 LTS with kernel 2.6.32-21-generic , and Ubuntu 10.04.4 LTS with kernel 2.6.32-38-generic. While I am trying to compile the source for both kernel version - 2.6.32-21-generic ...
2
votes
1answer
2k views

linux; return “RTNETLINK answers: Operation not supported” for dummy interface creation

I am trying to create a L3 interface in kernel v3.4.34, that is not attached to a physical interface/device and this is to be used purely as a management interface as an externally visible interface ...
-1
votes
1answer
92 views

Minimal OS with less background process [closed]

I am currently doing experiments on L1/L2/L3 cache. Measurement of L1/L2/L3 cache access time fully depends on where is my current data present, and that also depends on background process of OS ...
1
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2answers
1k views

Not enough host controller resources for new device state

I have a debian mint based system where I plug in 16 usb devices. The Kernal is: 3.11.0-12-generic After about 10 or so devices I start to experience problems with connecting new ones. There error ...
1
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0answers
217 views

Linux - How to list all device nodes using a specific device driver

I know I can see what driver is being used for a device node if I know the major and minor number of the device(see this link). But I want to know if there's a way to list all device nodes that are ...
2
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1answer
2k views

Linux kernel: getting ELAN touchscreen to work, USB debug related

This problem is actually known (ext: ELAN Touchscreen regression in recent 3.12's), but has no known solution up to kernel 3.13.6: [ 3844.533281] usb 2-7: new full-speed USB device number 91 using ...
0
votes
1answer
116 views

Linux 2.6.39.4 how to find available loadable kernel modules

I'm customizing the 2.6.39.4 linux kernel on an arm platform and trying to test out a "Hello World" driver I created. I selected "M" (loadable) in the kernel make menuconfig and verified that it ...
1
vote
1answer
204 views

How Fake raid communicates with Operating system(Linux)?

I am a programmer, I studied about software, hardware and Fake raid's and I am unable to understand how fake raid communicates with operating system (Linux)? I mean which software layer or driver ...
2
votes
1answer
267 views

Linux: Is it possible to know if my kernel has support for “policy routing” enabled?

I am following these instructions in order to configure multiple default routes for Linux (I am testing it on Ubuntu v12.04 and Kali v1.0.6), and the feature "policy routing" is requested enabled in ...
2
votes
1answer
1k views

nfs and cifs shares hanging from Linux

I've got a NAS (Dlink DNS-323) that I mount from my linux box. It used to work fine, and then I upgraded my distro (apt-get upgrade). I'm running Linux Mint Debian Edition. Current kernel is: ...
0
votes
1answer
233 views

Which version of the Linux kernel does Firefox OS use?

Firefox OS is described as a Linux-based operating system, but I've never seen any information about which kernel version various releases use. Mozilla's release management only mentions the ...
0
votes
1answer
33 views

building custom kernel on redhat 9

I'm trying to build a kernel 2.4 on redhat 9. but when I go through theses steps: make menuconfig make dep make bzImage make install they return no error but when I try to boot into it, it returns ...
1
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1answer
154 views

Linux Kernel TCP socket functions

So I have been looking through the Linux Kernel v3.8.0-19-generic source code and I noticed that the proto struct, whose members are virtual functions for socket operations depending on the particular ...
1
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0answers
121 views

getting error while adding a system call

I'm using Ubuntu 12.04(64bit) and installed kernel version linux-2.6.37.3. My device is ASUS x201ev net-book(64 bit). I'm providing the link of procedure i used. i edited unistd_64.h file also and ...
1
vote
2answers
29 views

Where can I find submitted Linux patches?

Is there a central repository that holds Linux kernel/driver patches that have been submitted, but not yet integrated into a kernel release? Ideally, such a repository would be searchable by kernel ...
2
votes
1answer
363 views

Why is INSTALL_MOD_STRIP not on by default?

I haven't compiled Linux kernels in a couple of years, and now that I started doing so again I discovered that modules are installed with debug symbols by default unless INSTALL_MOD_STRIP=1 is passed ...
1
vote
1answer
406 views

Linux: Random kernel oops in mmap functions

For the last month or so I've been getting seemingly random kernel oopses. I've started to notice a pattern: from looking at the traces, the call trace always involves mmap functions. Whenever one of ...
1
vote
1answer
157 views

Linux root filesystem on custom hardware

I have a custom-designed SoC implemented on FPGA, based on an ARM-processor clone, on which I am trying to boot Linux (kernel 3.10). I have successfully added support to my custom peripherals (an ...
0
votes
1answer
1k views

How to get ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter running on Ubuntu 12.04

I've got issues getting ID 148f:5370 Ralink Technology, Corp. RT5370 Wireless Adapter to run ob an Ubuntu 12.04 box. I've downloaded latest sources from http://www.mediatek.com/_en/07_downloads/dl.php ...
1
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0answers
118 views

My own linux Chorded keyboard driver and interface to my embedded application

I wan to develop my own keypad driver to my own keypad. I have to used GPIO to identify Key Events and used I2c to get scan code. I am going to develop keypad driver like this. #include ...
0
votes
1answer
695 views

Building Custom Kernels for ChrUbuntu on Samsung Chromebook XE500C21

I am trying to build custom kernels for my Samsung XE500C21 running ChrUbuntu. I need kernels that are at least 3.4.0 because I'm trying to run VMWare Workstation. I am running ChrUbuntu 13.04. I have ...
1
vote
1answer
1k views

Error when compiling Linux kernel

I get an error when trying to compile Linux kernel 3.8.0-32 on Elementary OS Luna, based on Ubuntu. I have a Lenovo S400 notebook, and the command I used is: sudo make-kpkg --initrd ...
0
votes
2answers
158 views

Running OS X command-line programs on Ubuntu

Given that Mac OS X is derived from BSD (Berkeley Systems Distribution) UNIX, I would assume that in some way or another, it would be possible to run command-line OS X programs on Ubuntu. I am really ...