The main component of most operating systems, the kernel manages most of a computer's communication between hardware and software. Typically, the kernel is the lowest level of abstraction a programmer can have to a resource.

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ALSA does not find sound devices as user but can as root after kernel upgrade

Using Archlinux with x86_64 after kernel upgrade to 3.5.3-1, there is no sound, and ALSA run as user shows no sound devices. The proper kernel modules are loaded, and both dmesg.log and lspci show ...
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238 views

Linux Sound Drivers - Recompiling kernel with ehcd-hcd module

I just installed Linux Mint and I am trying to get my usb soundcard to work. I am completely new to Linux so I have only been learning about all the important parts of the OS this afternoon. No one I ...
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1answer
141 views

in which kernel version CONFIG_IP_NF_MATCH_OWNER appears?

In which kernel version CONFIG_IP_NF_MATCH_OWNER key appears? I dont see it while make mennuconfig on 3.2.28 that I am trying to compile for my ubuntu 12.04 (3.2.0 - default kernel version).
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2answers
204 views

Boot windows 7 from a disk image of custom format

Windows 7 has an ability to boot from alternative sources besides plain disk partitions - for example it can boot natively from VHD or WIM. Is the handling of above mentioned formats hardcoded into ...
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2answers
1k views

Fedora Repository for older Linux Kernel versions

I'm using VMware Workstation 8 on Fedora. After every Kernel update, VMware can't rebuild its modules, so a patch is necessary. However, the last patch causes VMware to panic when a virtual machine is ...
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258 views

How to find out the available (and used) user resources?

With ulimit, we can find out how many open files, running processes etc. at most the user can have at the same time. My question is: how can we find out how much of these limits are being used and how ...
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1answer
262 views

How can I have a simple commandline based OS?

I have an Cortex A8 based development board, I would like to setup a simple OS, for example to connect through SSH to the board and upload/write new program(blink led etc). The board comes with a CD ...
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1answer
54 views

Swapping laptops while keeping current systems (kernel)

I am going to be getting a new laptop from HP soon, due to a faulty part, and they are giving my an upgrade. Almost all of the specifications will be changing, but I'm not keen on reinstalling my ...
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2answers
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How do I compress a vmlinux kernel into vmlinuz?

The question is pretty much summed up by the title - I've just built a kernel which has generated the vmlinux output file. How do I compress this into a vmlinuz image?
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1answer
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Mac - per-kext memory extension, aka which kext is leaky?

I am having trouble with some of the kernel extensions I am running as after a day or two of use, the memory usage of kernel_task grows to 1.2GB and stays there all the time. The problem is that I ...
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1answer
313 views

What is the significance of — in kernel parameters?

I've been customising some kernel parameters and notice that on some guides it has something like initrd=/blahblah.gz -- quiet and others only have initrd=/blahblah.gz quiet I've tried both and ...
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846 views

What kernel does Windows use? [closed]

XNU for OSX, Linux for Linux Distros. What is the name of the kernel that Windows use? (Don't tell me it uses "Windows Kernel")
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1answer
617 views

find kernel config option in menuconfig

I've upgraded my gentoo-sources today to 3.3.8, and now I am looking at diff between old kernel's defconfig and old kernel's .config: there are about 20 changes. I want to apply this changes manually ...
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3answers
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How to save or export a custom Linux kernel configuration

I downloaded a Linux Kernel from www.kernel.org, then I used menuconfig to customize it. After a lot of customizing it works just like I need it to, and I don't want to loose this actual ...
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1answer
382 views

How to install (by hand, not setup) a Linux Kernel (3.xx) in a device and boot

I want to install only the Linux Kernel and install the bootstrap manually... like we did in good old DOS... Boot from a live linux, Install the devices hd*/sd*/etc., Initialize disk, make ...
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1answer
720 views

How to set Linux processor affinity to single core?

How can I set processor affinity in Linux machine (Fedora) that user duel core Intel(any) CPU? I want the other core to shut down. Thanks
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1answer
2k views

Kernel data types u8, u16, u32, u64 not resolved

I am trying to compile some files related to wireless subsystem (mac80211) which use datatypes u8, u16, u32, u64. These are not resolved. The header file being referred to is linux/types.h which is ...
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3answers
2k views

13" MacBook Pro gets daily kernel panics

My software is OS X Lion 10.7.4 and I've reinstalled it 4 or 5 times to try to solve the kernel panic problems. It's better now, but still unstable. It's a Core i7 2.8 GHz (dual core) with 8 GB RAM ...
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1answer
2k views

Fedora 17 keeps using fedora 16 kernel

I did run preupgrade to upgrade my Fedora 16(x64) to Fedora 17. And it seemed to work fine. So I got the new gimp 2.8, gcc 4.7.0 and so on. But the system keeps using the old kernel from fc16. Uname ...
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2answers
2k views

How to find out which driver files belong to a certain hardware device like a printer?

On a certain machine I installed a Dell 2355dn Laser MFP printer, now how can I find out what files on the hard drive are used as drivers to access the printer. I assume they must be under ...
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1answer
506 views

VMware tools patching - Kernel 2.6.37+ (Slackware 13.37) Graphics Drivers Not Working

Good day, I am using Slackware 13.1 in VMware Fusion 3 (latest) on my OSX10.6 laptop. I recently upgraded my Slackware 13.1 machine which is directly installed on a spare PC to Slackware 13.37, no ...
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1answer
145 views

How do I pick the right kernel arguments to boot from the FILES on a linux LiveCD USB?

I think I've been through just about every post on this site about this and can't find anyone who will shed light on all those mysterious arguments that get passed to the linux kernel by grub! What I ...
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117 views

Ubuntu alternate install CD kernel modules

I'm using Ubuntu alternate install CD to customize the installation process. I have a hardware that uses Realtak 8188CE chipset for wireless network. If I boot into a LiveCD environment I can connect ...
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1answer
510 views

kernel modules missing

I'm not sure what happened, but I upgrade my ubuntu system to 12.04 and now something is hosed, I can't boot into my 3.2.0-24-generic kernel, all it does is load up to the login screen and then I ...
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4answers
101 views

Installing Linux

I have downloaded Kernel 3.3.4 for Linux. I need to actually get the OS. What is the most current version of Linux that uses this kernel and where can I get it from?
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1answer
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Is it true that if I have 4GB RAM - Red Hat automatically installs a PAE kernel?

And if so, is there a way to "downgrade" to the regular kernel?
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2answers
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How to boot linux kernel without bootloader?

By default to boot image bzImage of a Linux kernel you need to use the bootloader. If you try to boot the image directly it will give the error: Booting from Hard Disk... Direct booting from floppy ...
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2answers
1k views

Autologin as root or as any other user in Linux in console mode

my system requires to run automatically at start up. so, i did write a simple module and registered it inside /inittab. it automatically runs at start up but the problem is when i turn on the computer ...
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1answer
205 views

Why is there an extra HDD under /dev being added in my Linux Kernel?

I have created a Linux kernel and for some reason an extra drive is always added at bootup. My hard drive is listed as /dev/sdb. /dev/sda is created too, and it is 8 MB in size. I can't find ...
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1answer
299 views

Kernel power errors on Acer Aspire M7720

I have an Acer Aspire M7720 with 12 GB RAM and 5 TB HDD. Everything else is the same and I get kernel power errors. My monitor says "input not supported" and I have to turn the power off cause I ...
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1answer
2k views

which process is using a linux kernel module?

I am trying to run this command: # rmmod nvidia But I get: ERROR: Module nvidia is in use How can I know which process(es) is/are using the nvidia module?
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Why can't I load a new kernel in? What went wrong?

grub still cannot load my new kernel, I did the following to install my new kernel: I extracted my new kernel source in /usr/src/linux-2.6.31.6. Added the rt patch patch-2.6.31.6-rt19 to it using: ...
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1answer
629 views

Two Kernel Panics in two weeks, what's wrong? [closed]

I've had two kernel panics in two weeks on my Macbook. Any idea what's wrong? Here's my report: Interval Since Last Panic Report: 386578 sec Panics Since Last Report: 2 Anonymous UUID: ...
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1answer
178 views

What does the messsage "Adding *k swap on …' mean?

I have the following message in the syslog on some machines: Adding 8385920k swap on /dev/sda3. Priority:-112957 extents:1 across:8385920k What does it mean? Is it a problem? And why is this ...
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1answer
566 views

Boot Gentoo Linux off SD Card on MacBook Pro

I'm trying to boot off an SD card on a MacBook Pro 5,4. I can get into GRUB and boot the kernel but I get a panic when it tries to find the root file system. For some reason, no matter what option I ...
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49 views

What happens if a linux kernel argument is passed twice with different values? [closed]

As the question states, what if I pass kernel /vmlinuz audit=1 audit=0 Will auditing enabled or disabled? Or will the kernel just freak out? Or is it undefined and will depend on the build of the ...
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1answer
580 views

How do I disable the “lp” kernel module permanently

How do I disable autoload of the lp kernel module? What I've tried so far: Try to disabel the module via blacklist echo "blacklist lp">>/etc/modprobe.d/blacklist echo "blacklist ...
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2answers
3k views

How to unload a Windows driver?

I'm looking for a cmd-line solution to stop a Windows driver that I had installed manually. The installing procedure was the following: sc create MyDrv type= kernel start= demand binPath= ...
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1answer
506 views

How can grub pass any custom variable into system enviroment?

I want to identify which menu entry has been lauched in rc scripts. So is it possible to pass any variable into my system via kernel argument?
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1answer
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“64-bit mode not compiled in” error while compiling Linux kernel

I am building 2.6.18 from CentOS source code. I'm at the last step to the build process in their instructions but seem to be getting an error that I can't understand. Instructions I'm following: ...
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2answers
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How many characters are in one line?

Hy guys. I got a noob question, tried to look on the internet without success. Look the following notice: Linux kernel exceeds 15 million lines of code Now, how many characters are in one line ? I ...
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1answer
346 views

Error message - kexts installed improperly

I have just gotten an error message for every single kext file there is. The error message goes something along the lines of: The system extension "file path" was installed improperly and cannot ...
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2answers
3k views

Where's windows kernel file?

What computer file contains windows kernel? is it seen in task manager process list? if not, why?
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1answer
2k views

unable to compile a kernel module

I tried to compile my first loadable kernel module and failed :( Here is the error: r@ubuntu:/$ sudo make -C /lib/modules/`uname -r`/build/ M=`pwd` [sudo] password for r: make: Entering directory ...
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2answers
618 views

Where do I look for Linux kernel module documentation?

Where do I look for Linux kernel module documentation? For example, I've tried googling the module iwlagn, but I cannot find anything that tells me about available options. Where do I look?
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1answer
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What is and how to increase the maximum number of usb devices?

I'm wondering what is the maximum number of USB devices the Linux kernel can manage? Does this depend on the root-Hub or something else, too? Is there a way to increase this maximum number? I need ...
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5answers
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How can a linux kernel be so small?

An ordinary stable 3* kernel is about 70 mb now. But there are little linux distributions of 30-10 mb with software and other stuff running out of the box. How can the linux kernel be so small in ...
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5answers
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Linux equivalent to Mac OS X's fs_usage

Is there a Linux equivalent to the Mac OS X command fs_usage? According to the man page it does the following: "report system calls and page faults related to filesystem activity in real-time". I ...
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2answers
581 views

How to keep Linux running after hard drive removal?

I am working on an embedded Linux device with a USB hard drive. There is a swap file on this drive. The hard drive may be powered down at any moment before being powered back on few seconds later. ...
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2answers
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Can't boot in to arch linux - '/sbin/init: Bad Exec Format' followed by kernel panic

I dual boot Windows 7 & Arch Linux. Arch was stable for a while, but then it stopped booting into Arch, saying '/sbin/init: bad exec format'. This is followed by a kernel panic. I'm not really ...