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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USB drive not getting recognized as scsi device in custom linux kernel

I am facing a slow write speed problem with a USB drive in my custom linux kernel. I suspected to be a hardware problem but with the same hardware and Opensuse 12.1 OS, write speed of my USB drive is ...
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27 views

Why does my computer freeze randomly and also power button not respond? [duplicate]

My computer has this serious problem, I turn on the computer and after a random time lapse, it freeze and also the powerbutton not respond, the only thing that works is the reset button (the one that ...
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22 views

How do I run a patched linux kernel on Arch, using LVM on LUKS

I'm running LVM on LUKS on a Dell XPS 13 (2015 version). I'd like to run the patched linux-xps13-alt kernel which fixes some issues with this system. I have built & installed the linux-xps13-alt ...
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1answer
365 views

Fedora 21 Sound stopped working when installing the 4.0.4 kernel

Today I did a yum update as part of my attempts to get my qemu-kvm vm up and running. It appears to have had a side effect I didn't anticipate. Other than qemu itself, the only other thing that ...
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0answers
1k views

Rollback Kernel Ubuntu 14.04.2

I have looked at many answers on here but no matter what it doesn't seem to work. Fresh install of Ubuntu 14.04.2, trying to install an older kernel. I only have SSH access no GUI etc. What i have ...
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120 views

Embed initramfs into existing kernel

Is it possible to embed an initramfs image into existing kernel without recompiling the whole thing? I don't have resources to do that.
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1answer
1k views

What extras do I need to maximise battery life on a Linux laptop? (And how to stay current) [closed]

Now, I know that this question has probably been asked 1000 times - but as far as I can tell, the answer seems to change a lot over time. While researching, I came across powertop, pm-utils, tlp, ...
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1answer
42 views

Alternative of arch_fast_hash in Linux kernel v3.19 and above

To find the hash value of a given buffer, I used arch_fast_hash function present in Linux kernel v3.16 declared in include/linux/hash.h and defined in linux/lib/hash.c. But in Linux kernel v3.19, ...
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1answer
720 views

Who's crashing my kernel?

Symptoms Suddenly, a message saying "A problem in the kernel package has been detected" started appearing after I login upon boot. A new message is shown every second, incessantly (translation ...
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2answers
2k views

Android ADB Shell sendevent Not Working

I want to simulate pressing the power button on a rooted Samsung Galaxy Tab 2 GT-P5100 running Android 4.0.4 using the ADB shell. To do this I changed the relevant permissions using: adb shell su ...
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48 views

how to download and install outdated linux-headers

I just watched the issue concerning how to add additional driver (module) into pre-compiled kernel; I tried to install the linux-headers but in the current repository I could find that all the ...
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0answers
170 views

crypto kernel module not avialable on linux 3.18.11 on Raspberry Pi 2

I'm trying to use dm-crypt on my Raspberry Pi 2 with Raspbian (debian) to open a trueCrypt volume, but i get Required kernel crypto interface not available. Ensure you have algif_skcipher kernel ...
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3answers
2k views

Mac kernel panic, how to solve this?

I got the following kernel dump my Mac Mini after hibernation. This issue has been a certain event after Mac going into hibernation for a period of time. Then I tried to reinstall Yosemite on my Mac ...
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0answers
1k views

OS X Yosemite coreaudiod, identityservicesd and com.apple.geod not responding

Has anyone on here found a comprehensive solution to the problem where coreaudiod is constantly not responding? I also have identityservicesd and com.apple.geod not responding, all the time: every ...
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1answer
69 views

Kernel Thread that won't exit, Load Average +1

So I have a new server that is up and running with Centos 6, and the load average is stuck hovering around 1, even when the machine is nearly idle. I reviewed the process table and found this ...
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0answers
63 views

Broken boot-splash arch linux

Does anyone know why systems sometimes make broken images on boot? I had same problem when I've upgraded my kernel on Ubuntu. Now this problem appears on my Arch laptop as well (fresh install and ...
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1answer
786 views

How to increase the Kernel memory

I have two Windows Server 2008 R2 machines with the same spec (24G RAM). However, the Kernel memory is quite different: machine 1 has 206M of paged kernel memory and 168M nonpaged. Machine 2 has 998M ...
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0answers
24 views

How can I debug OSX memory card events

I am trying to get kernel messages for memory card insertion - removal, but i don't get logs. I issue the command "tail -f /var/log/kernel.log" So i need to know how to increase kernel log level to ...
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0answers
698 views

Windows 8.1 64bit Kernel-Power 137 Error

I'm at the moment encountering a problem with my windows 8.1 64bit Version. Some days ago I realised that it takes longer than usual to start the computer or wake it up, in fact, the computer seems ...
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1answer
713 views

Broadcom 4360 wireless setup w/ Ubuntu 14.10

I am attempting to set up my wireless adapter, but I can't seem to get the drivers installed properly. OS: Ubuntu 14.10 Motherboard: ASUS X99-Deluxe (wireless adapter is embedded) Adapter: Broadcom ...
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2answers
69 views

What does it mean when a kernel terminates a process with status 131?

I am trying to debug an issue where a redis-server process died, and in the syslog I see: Mar 9 23:56:44 ip-10-236-158-228 kernel: [25188369.962457] init: redis1-server main process (2822) ...
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0answers
66 views

Where to copy kernel source after kernel is compiled from sources?

On my linux box (Mint 17.1) I compiled the kernel from sources so that I could enable certain things that are not there by default. The kernel compiled fine and the system boots/works just fine. ...
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1answer
496 views

Win32 and the global namespace

I'm studying Windows NT architecture. I would like to know what is the relation between the "Win32" namespace and the "\Global??" namespace in the nt namespace? As far as i understand the win32 ...
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1answer
78 views

Windows XP Kernal Hack?

I have Windows XP 32-bit and have 8 gigabytes of ram, but aparently windows can only "see" 4 gigs of it. I know that there are 'kernal hacks' for OS's such as Vista, 7 and 8, but none for XP. Could ...
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0answers
96 views

What exactly does acpi_backlight=vendor do

I have an issue when booting Linux with a device plugged to USB 3.0. If there is anything plugged (USB stick, keyboard, …), the system hangs on start with blank screen and does not react even on ...
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2k views

How to understand and debug USB issues with Linux

I’m having an odd problem with a cheap "reverse USB hub" —not sure what the technical name might be— named a Tek Republic TUS-200 USB Sharing Switch. it has one USB port for devices, and ...
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1answer
151 views

Where is /sys/subsystem as described in Linux kernel doc?

Quote from https://www.kernel.org/doc/Documentation/sysfs-rules.txt: [...] It is planned to merge all three classification directories into one place at /sys/subsystem, following the layout of the ...
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262 views

linux kernel starting issue (file system corrupted) on nand flash memory

please look at here for the trace. To make it short : I need a way to erase flash memory (Root file system) on my arm device to be able to install a linux kernel + file system again. So, let me ...
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22 views

Restore [non-boot drive] root directory from kernel image

Accidentally overwrote the root directory on a 2nd drive, .. but the subdirectories are still there [i.e. cd to a subdirectory drive is successful]. Problem is, the root directory in the partition is ...
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0answers
48 views

ethernet port is not detected in freescale MPC8569 board after kernel updrade

I have a freescale MPC8569 embedded board. previously, I put linux version 2.6.32 on it and all interface connected to processor are working properly. Now, I upgraded my linux version to 3.10 and now ...
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1answer
1k views

What is *Paged* Kernel Memory?

What is paged kernel memory, as reported in the Windows Task Manager? Is it related to the page file? I assumed that it was the part of kernel memory stored on disk in a page file, but I tested ...
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1answer
232 views

Random freezes kernel power

Hi everyone I see kernel power 41 (63) in computer management and my computer freezes every 10 minutes it keeps working only screen stuck. and it doesnt matter that I do anything even when it just ...
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0answers
1k views

Random system halt (no BSOD) due to watchdog

I have a Sony SVE15118FG laptop running windows 8.1 that has been doing me well however recently it has started while gaming randomly shutting off. I'm referring to an immediate power off followed by ...
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0answers
788 views

How can I fix kernelevent tracing, error 0xc0000035?

I have noticed several kernelevent tracing errors in event viewer. The code is always 0xc0000035 and event ID is always 2. Session "HomeGroupLog" failed to start with the following error: 0xC0000035 ...
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0answers
1k views

WIN8_DRIVER_FAULT - BSoD

I've since fixed this issue, although I'm now running into another issue. Please see my new thread: NVIDIA; Whea_Uncorrectable_Error I'm currently facing a slight issue. Whenever starting a ...
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1answer
41 views

script to disallow mounting of certain idVendor

I'm trying to write a script to disallow mounting of certain usb thumb drive's brand like silicon-power my thought was to use tail -f /var/log/messages and grep it to idVendor and blocking it upon ...
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1answer
241 views

How to compile an ISO with a kernel patch for another computer?

I recently bought an HP Stream, which is a neat, cheap laptop that I intended to install Xubuntu on. Unfortunately, I have been running into problems due to its eMMC drive. I found it seems to be ...
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0answers
417 views

Kernel Panic from overheating?

I believe my CPU is overheating which is causing a kernel panic and the machine reboots. It is an Intel 3612QE. I have changed the cpufrequtils scaling_governor to ondemand, conservative, and also ...
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0answers
150 views

Possible to create custom distros off Windows NT kernel? [closed]

Something I've always wondered (so my apologies if this is obvious). With all legality aside, is it possible for someone to attain the knowledge to create a custom OS off the windows NT kernel? Or ...
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1answer
322 views

What is the difference between linux-server vs linux-image-server on Ubuntu?

I cannot find a recent, definitive difference between linux-server and linux-image-server. I thought for sure this would be in the Ubuntu documentation, but I don't see it.
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1answer
1k views

What are the differences between the linux-virtual, linux-image-virtual, and linux-image-extra-virtual kernels in ubuntu? [closed]

I'm wondering what the differences are between these kernels? linux-virtual linux-image-extra-virtual linux-image-virtual
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2answers
586 views

Scrolling up the failed screen with kernel panic

From time to time, Linux booting failed on very early stage (like initrd loading). Then, the kernel panic message is showing up in text mode. Since the screen height limit, all I can see is around 40 ...
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1answer
258 views

Reinstall /boot/<kernel> files through apt-get?

I was doing some maintenance and a script got away from me. I managed to delete the latest kernel files from /boot (actually, all the kernel files, including the old ones). I need to re-install the ...
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0answers
50 views

Is BIOS/UEFI used after OS startup?

I know that BIOS/UEFI is used during computer startup to boot the system and check HW and that it provides abstraction over hardware Does this mean, that the OS kernel calls BIOS/UEFI layer when the ...
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1answer
969 views

Telit modems on newer linux kernels are not recognised

I've Telit HE910 and HE910-v2 modems. After switching from 3.13-rc4 (sunxi branch) to mainline 3.17.2 I've got problems with 910. Before modem was set up properly: Jan 1 03:22:11 localhost kernel: ...
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1answer
542 views

linux-headers-3.16.0-4-amd64 vs. linux-headers-3.16-3-amd64

"uname -a" returns 3.16-3-amd64 as my kernel version but I could install 3.16.0-4 via synaptic. Are these two same? OS: Debian Jessie
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1answer
1k views

Wi-Fi not showing up after kernel upgrade from 3.10 to 3.16 in Ubuntu 14.04

I upgraded the kernel in Ubuntu 14.04 from 3.10 to 3.16. My system is a Lenovo G510 59398431. After that the option “enable wifi” in the drop-down of wireless icon on the desktop is not there. Even in ...
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1answer
285 views

Virtualbox not installing because of kernel version mismatch in fedora 20

I am using this answer to install Vbox,The only problem I have is with kernel version in the second part of that answer it tells output of uname -rm and rpm -qa kernel | sort -V | tail -n 1 ...
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1answer
267 views

What could cause out_of_memory & __alloc_pages

Sadly my server is permanently hangging due to out of memory: Nov 8 07:30:43 crawler kernel: Nov 8 07:30:43 crawler kernel: Call Trace: Nov 8 07:30:43 crawler kernel: [<ffffffff800cb625>] ...
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1answer
43 views

Is there anyway to get driver commands from a windows driver .sys

Is there anyway to Sniff out driver commands for a (.sys)system file driver?