for questions concerning Ubuntu's kernel, including compiling and questions relating to modules

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722 views

How to debug a kernel panic? Ubuntu 14.04

So, I have been having kernel panics. My computer will suddenly come off and then a dmesg like output shows on the screen. The first two lines read [20352.651631] BUG: Unable to handle kernel NULL ...
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3k views

How to install VirtualBox in Ubuntu 12.04 LTS: “No suitable module for running kernel found”

I have a fresh 12.04 LTS installation. I have installed linux-headers-generic as well as build-essential. When I install virtualbox, I get the following error: Building initial module for ...
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740 views

DVB adapter under kernel 3.13.0-35 and above

I have a Ubuntu 14.04.1 server with a MythTV backend server and a Digital Devices DVB adapter. The server has been working fine, but if I upgrade the kernel from 3.13.0-34 to 3.13.0-35/3.13.0-36 my ...
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201 views

How to build kernel with different flags?

Following the instructions here (https://wiki.ubuntu.com/KernelTeam/GitKernelBuild) I built a development version of the kernel. I copied the old config, called make oldconfig and then modified ...
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311 views

Warnings during kernel compiling

I'm compiling custom kernel and during the process I'm getting warnings such as: drivers/isdn/hardware/eicon/message.c:6115:1: warning: the frame size of 1184 bytes is larger than 1024 bytes ...
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179 views

Build identical ubuntu kernel packages

I compile my own patched version of the upstream linux-kernel. Until now I have always used make-kpkg, by running CONCURRENCY_LEVEL=9 fakeroot make-kpkg --initrd --append-to-version=-patched ...
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36 views

Can I use my serial receipt printer as an emergency console?

I recently came into possession of a serial receipt printer and I would like to know if I could use it as an emergency print-out console for the following purposes: Kernel Panic (Stack Traces) Any ...
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56 views

Error While installing Kubuntu 14.04 in Virtual machine

Running Kubuntu 14.04 in Virtual machine Gives me an Error :- Boot : could not found kernel image : vmlinuxz.efi how can solve these ?
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90 views

laptop sees two connections when HD TV is plugged, but no image

With Apple Macbook Air 1,1 (Early 2008) and Ubuntu 12.04 with kernel Linux 3.2.0-68-generic-pae, when I connect it to an HD TV via the micro-DVI to DVI (Apple adapter) --> DVI to HDMI (I tried two ...
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176 views

linux-image-generic missing - is this a problem?

After removing old and unused kernels from my wife's laptop as per this question: What kernels & packages do I un-install? I thought I'd do the same on my laptop, since I've been running Ubuntu ...
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275 views

synaptics driver not workin with new kernel?

after I upgraded from kernel 3.13.0-29 my synaptics driver seems to stopped working. basic touchpad functions still work (this includes moving cursor and clicking) but no right click nor middle click ...
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761 views

How can I upgrade to Lubuntu 14.04.1 withot a PAE kernel?

On my Dell Latitude D800 laptop, which has an old Pentium M without PAE support, I was able to successfully install Lubuntu 14.04 from the CD. When I try to upgrade, I get the error: PAE not enabled ...
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2k views

Dell Vostro 2520 WiFi not working after Ubuntu 14.04 update

I tried the following command: sudo apt-get install --reinstall bcmwl-kernel-source Wireless worked for sometime but after reboot WiFi stopped again. Can someone please help? Software center in ...
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56 views

Wireless Repeater causing kernel to crash

So my wireless set up is not ideal as far as my location relative to my AP goes. However I recently remembered I had/dug up an Amped Wireless 300N repeater (range extender). I set it up in my living ...
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326 views

TCP hash tables in Linux Kernel

I have implemented a solution to migrate sockets between servers running Linux OS. The migration mechanism works very well and the client is capable of continuing receiving his service from the new ...
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145 views

Cleaning up old HWE stacks?

I've been running 12.04 since release and have updated to every new HWE stack. I am currently on 12.04.4. Does anyone know how to clean out all the old versions of HWE? I currently have way too many ...
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84 views

System Updated to 3.13 Kernel that won't boot

Recently, I got a message that told me automatic updates to my hardware would end 8/07 and decided to update my system to the latest kernel version 3.13. I'm running Ubuntu 12.04 on some fairly old ...
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774 views

How to BuildMyOwnKernel, bumping +1 for revision number version?

I'm facing a hard time with Linux 3.13 from Trusty but, it is another topic (http://www.mail-archive.com/ubuntu-server@lists.ubuntu.com/msg06775.html), so, I decided to backport the Linux 3.16 from ...
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101 views

Is there any solution to set baud rate, line discipline etc., by only using our kernel module?

I wrote a kernel module for a touch screen monitor and earlier I used inputattach (written in userspace) to open serial port, set baud rate, control flags, line discipline etc. But now I want to ...
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123 views

How To Add LZMA Files

Maybe someone here can help me. Is there a way to add LZMA files? You have your uImage; you extract the kernel and then decompress it and run binwalk on it to get this (example): DECIMAL HEX ...
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49 views

Ubuntu kernal panic libc6 screenshot attached

I was installing some packages, 'create repo' I think. I guess this must have messed up my libc6 installation as now I am receiving a kernal panic when I restart my box. Complaining about missing ...
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45 views

Adding Kernel to a disk image without 'installing'

In order to download a disk image from my Ubuntu 10.04 LTS based VPS, I setup Ubuntu 14.04 LTS (in VirtualBox) and used DD over SSH. I wrote the image to a vdi drive, hoping to be able to boot it in ...
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158 views

Problem upgrading from Kubuntu 12.04.4 to 14.04

Good morning, I have Kubuntu 12.04.4 LTS and would like to upgrade to 14.04 LTS. I tried to follow the instructions at https://help.ubuntu.com/community/TrustyUpgrades/Kubuntu/12.04LTS but after ...
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241 views

Sierra WWAN Kernel Module Acting Strangely

So a few days ago I installed Zorin OS (basically, Ubuntu with a Windows-like desktop environment) on my grandmother's computer to save it from the slowness of Windows 7. Now, since she uses an ...
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326 views

Many files in /var/lib/dpkg/info/ corrupted; how to recover

When I run sudo apt-get (anything), I invariably get this error: dpkg: unrecoverable fatal error, aborting: files list file for package 'thunderbird-gnome-support' is missing final newline E: ...
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810 views

After installing a new Kernel in Ubuntu 14.04, rebooting takes me to busybox initramfs. How do I mount a filesystem after that?

I have a virtual machine with Ubuntu 14.04 in it. I recently built and installed linux-3.14.5 kernel on it, and tried to boot into it, but it drops me to BusyBox v1.21.1 built-in shell. Here's what I ...
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284 views

How to change kernel options on Ubuntu 12.04

I am to install Dummynet and according to this manpage http://goo.gl/qqjwfg I have to make the following changes in the kernel configuration file: options IPFIREWALL options DUMMYNET ...
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203 views

How to recover ASIX AX88179 from backports installation

I recently installed https://www.kernel.org/pub/linux/kernel/projects/backports/stable/v3.13.2/backports-3.13.2-1.tar.gz with make defconfig-wifi && make && sudo make install ...
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104 views

Kernel 3.13.0.24 won't boot

I recently updated my Ubuntu to 14.04, which also resulted in the installation of kernel 3.13.0.24 Booting this kernel always resulted in a black screen, so I simply got rid of it and am now using ...
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92 views

traverse all the disks or get hd_struct by device name in kernel module

I'm writing a kernel module(on linux 2.6.32), to get the disk_stats of all the disks(not partition) in use. In other words, I'm getting the data just like what /sys/block/sda/stat shows, but in kernel ...
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1k views

“ERROR: Kernel configuration is invalid”

I have been stuck on this issue for two days now and couldnt find a fix for this. I installed a realtime kernel with sudo apt-get install linux-rt because KauNet (which is an ipfw extension) ...
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224 views

Blacklisted module is still loaded?

I have a problem with the module ivtv_alsa being loaded despite me having blacklisted it. No other module depends on it: # lsmod | grep ivtv Module Size Used by ivtv_alsa ...
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862 views

APEI generic hardware error

The following error message is shown while installing ubuntu 13.10 hardware error: Hardware error from APEI generic hardware error source 0 hardware error: APEI generic hardware error status hardware ...
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2k views

Linux stops at “Switched to clocksource tsc” after fresh install of 14.04 — Setup or reinstall?

I've been looking forward to installing the latest greatest daily build of Ubuntu 14.04 into my 'new' X301 Lenovo, which seemed promising as the OS preview from live USB worked rather well. ...
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577 views

How do I rollback Recent Updates? 50+ crash reports upon login

Am running 13.10 w/Cinnamon, but still have Unity installed. Everything was working fine until I responded to an update manager update notification. I tried rebooting into a prior kernel version, but ...
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119 views

SMP with iMac 27" (2013/14)

I'm a sysadmin for a University, and I was setting up a new iMac 27" triple booting Mac OS, Windows 8.1, and Ubuntu 14.04 x64. I have all of the operating systems working and booting procedures fine, ...
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64 views

How can I use the default generic kernel in a UEC Ubuntu Cloud Image?

I download a UEC style Ubuntu Precise image from http://cloud-images.ubuntu.com/ that I want to use in an OpenStack cloud, but I want to make some modifications to it before booting the VM. ...
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113 views

nvidia driver is not loading after kernel update

I downloaded Nvidia driver from Nvidia's website. I set up it under kernel 3.11.0-17. Every thing was almost perfect for me. It was even working after update to kernel 3.11.0-18. However I wanted to ...
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41 views

Changing kernel in a system not booting

I have a dell inspiron laptop and have just installed 12.04. The system hangs on boot after 'Switching to clocksource TSC'. I've searched all the questions here and had no luck changing bios ...
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313 views

How to install a custom Ubuntu Touch Kernel on the Nexus 10

I've just installed the latest version of Ubuntu Touch on my Nexus 10 tablet,but it does not fit my needs. Instead of it,I would like to install a minimal version of Ubuntu or Debian running with the ...
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23 views

Where to find a kingston pen drive in .config file

I was checking the .config file in the /usr/src/linux folder. 1.I was searching the name for my USB flash drive I couldn't find. By what name will it be there? 2.What happens if I copy the .config ...
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63 views

What should I learn before I dive into ubuntu-touch porting and development?

The documentation is a bit over my head. While I can understand the syntax for the most part, I have a hard time comprehending why specific parts, such as cyanogen mod, are important to the project, ...
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134 views

Kernel panic on boot: not syncing (HP dv6, Ubuntu 12.10 64bit)

I am running Ubuntu 12.10 64bit on an HP Pavillion dv6. Everything works fine except I randomly get a kernel panic "not syncing" when booting. After manually rebooting I usually get the same error; ...
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113 views

Can I use my Panasonic VDR-D100 in Ubuntu?

Is it possible to use a Panasonic VDR-D100 with Ubuntu? I have googled around and saw nothing related about it. The camcorder is so old. I want to be able to capture video with c++ but taught it best ...
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48 views

Upgrade from 10.04 to 12.4 shutdown in the middle of installation, and now i cant even run it live

I have had ubuntu 10.04 until yesterday, when my dad got home with a disc that has 12.4 on it, i quickly put it into the laptop and started the install, and everything was going fine, but apparently ...
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3k views

Error message: “This kernel requires an x86-64 cpu but only detected an i686 cpu”

I have already activated the AMD Virtualization option in the BIOS, but I continue to see the error. My processor is 64-bit compatible. PS.: Hi, i want to tell everyone that i found my mistake. I am ...
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672 views

Can I delete “generic” kernel if I use “low latency”?

I currently can't update my release as there is not enough space on boot. I just have the one kernel version there, but seem to have both the Generic and Low Latency versions. uname -r just shows ...
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334 views

blender does not start after kernel update despite reinstall

Hi I recently updated my ubuntu 12.04.3 installation with the new kernel 3.8.0.30 After that blender did not start any more with the message that: /usr/lib/blender/blender: error while loading shared ...
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645 views

cannot find import; DLL may be missing, corrupt, or wrong version. Wine kernel32.dll error?

I'm trying to install hard drive wiping software that was written for windows. I have downloaded wine and get through most of the installation process until the program tries to open. It is here where ...
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482 views

Cannot access local variables using systemtap

I am just getting started using systemtap. On my 64bit Ubuntu 13.04 system, I installed systemtap and dependencies + systemtap-doc and elfutils then added the ddep repository to my apt/sources.list ...