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

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69 views

Is this considered a minor kernel update from 3.2.0-24.38 to 3.2.0-35.40?

I am thinking of installing Ubuntu 12.04.1 LTS, 64 bit, English. It comes with a kernel version 3.2.0-35.40 One of my programs only support kernel version 3.2.0-24-generic. On ...
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255 views

Kernel panic - not syncing: Vfs unable to mount root - (no options)

I just downloaded ubuntu and when restarting the pc i got this: ... Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-blok (0,0) I've been looking for an answer at people who got ...
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384 views

Convert existing Ubuntu desktop 12.10 installation to have Xen Guest Support

It looks like previous versions of Ubuntu had a package called linux-ec2 that would install a kernel with Xen Guest support. I was unable to find any packages in specifically 12.10 that install a ...
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139 views

How to use dmatest.ko?

I want to initiate a DMA-Transfer for testing. I stumbled accross a dmatest.c in the kernel sources (drivers/dma). I compiled a Kernel with this Module and tried it without any params. sudo modprobe ...
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178 views

Can't Boot Kernal Error -CPU Features

When I try to use Ubuntu on my PC (Windows), I get the following error: This kernel requires the following features not present on the CPU: pae Unable to boot - Please use a kernel appropriate for ...
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45 views

Linux kernel: page substitution policy

I am supposed to answer for homework which algorithm is implemented in Linux for the virtual memory page substitution and also give some extracts of the code to prove that. After some research I have ...
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276 views

Problems with booting Linux after updating kernel

After updating linux headers from 3.5.0-19 into 3.5.0-20 i faced booting problem. I don't know reason, sometimes boots normally, but sometimes i need to reboot 3-4 times. I tried to boot with recovery ...
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420 views

Linux Kernel Code Coverage - GCOV

I'm trying to use some test scenarios from Linux test Project and get the Kernel source code coverage. I'm using GCOV/LCOV to do so. here are the things I have so far: GCOV flags in the build ...
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89 views

Clean uninstall of kernel

During installation of ubuntu kernel 3.5.0.20-33 sthg. wrong happened, I guess during initramfs. How can I cleanly uninstall the kernel? apt-get remove --purge linux-image-3.5.0.20 and re-installing ...
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260 views

I/O memory conflicts

I recently bought a Arctic MC101 barebone (http://www.arctic.ac/en/p/living/office-pc/572/mc101-barebone-a10-4600m.html?c=2296) to run XBMC. I've installed Ubuntu 12.04 on this machine and the latest ...
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430 views

No ethernet or wireless interfaces on 10.04

So, I just got a new Lenovo ThinkPad T430s and installed Lucid 10.04 on it. The installation went fine but when I logged in there was no connection to the internet even with a cord plugged in. ...
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349 views

Lubuntu 12.10 wth Kernel 3.6.7 does not have Video on Skype

I have compiled newest stable Kernel for my Lubuntu 12.10 and I am wondering, why I have no video while I am phoning with Skype. In settings of Skype I could setup the microfon of my Microsoft Webcam ...
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245 views

Can't VMware 6.55 due to missing kernel modules

I own a license to Workstation 6.5.5. installed on Ubuntu 12.04; however, when trying to run it, I get the following error messages: ERROR: modinfo: could not find module vmmon ERROR: modinfo: could ...
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617 views

where can i get vmlinux file for running kernel

I'm developing several kernel module. Also i need some profiling to be done. As all my work is kernel modules, rebuilding kernel seems a overkill. I've seen KGDB/KDB and Oprofile is enabled in default ...
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617 views

How can I use hybrid sleep with kernel 3.6?

As I read in the changelog of kernel 3.6 there is support for hybrid sleep/suspend to both. I would like to know how to get it working in Ubuntu 12.10 so that I can compare it with the two other ...
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129 views

VMPlayer does not flush all outputs to serial port

I am debugging a Linux kernel in the VMPlayer on Ubuntu 12.04 configured a serial port to a file to see the debug information. However, each time when the kernel panics, only the backtrace stack were ...
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387 views

Kernel panic on reboot after failed logical volume resize

I attempted to do a logical volume resize yesterday using the follwoing commands $sudo pvdisplay "/dev/sda8" is a new physical volume of "113.11 GiB" --- NEW Physical volume --- PV Name ...
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1k views

WiFi can't connect after suspend

I've had this problem since Ubuntu 11.10 (my first install) but I was able to get around this issue with this answer. After I installed Ubuntu 12.04.1 I tried to use the same fix as before but I ...
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10 views

Custom Ubuntu 14.04 Trusty Tahr Live ISO - For TrafficSqueezer

I want to make custom Ubuntu v14.04 based live ISO with my TrafficSqueezer stuff in it. This allows users to directly use this Live ISO directly as a WAN optimization device without installation. ...
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8 views

No build folder for older kernel module

I am on Ubuntu 14.04, but I need to run a Linux kernel <= 3.8 in order to use a tool that is not compatible with more recent versions. I installed the linux headers and image from here, but I ...
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5 views

Firewire-core: bypassing the 1 second grace period

I am currently using the firewire cam AVT Guppy F080b and the IIDC Camera Control Library to store images whenever the camera is triggered. The application is not allowed to miss any trigger at any ...
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16 views

HWE update for 12.04, now programs don't run--fixes?

I recently updated the kernel on 12.04 to a version that is going to be supported until 2017. Problem is, FlightGear and Celestia don't run now, but I believe it's vitally important to run a ...
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11 views

Conky does not show cpu temp

I am trying to use conky to minitor my system but it is not showing CPU temperature, lm-sensors, hddtemp are installed, I answered yes to all questions running sensors-detect and at the end it shows: ...
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18 views

Use an older version of batman-adv on 14.04

I have a number of BeagleBone Black (BBB) boards running a batman-adv mesh network. The batman-adv version built into the BBB image (kernel 3.8.13) is 2012.5.0. My desktop and notebook clients all ...
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12 views

Kernel Panic when starting

Installed Ubuntu on new laptop with Win8.1 installed from USB key. Worked fine and could dual boot. Installed updates and rebooted when instructed Got following message when booting into ubuntu: ...
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10 views

find the .config file for linux kernel 3.10.48

I'm trying to compile kernel source code(3.10.48), and I wanted to know that how can I find or retrieve the .config file for the kernel?
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15 views

Ubuntu 14.04 libnetwork.so crash for unity control centre

I am new to ubuntu and I am kind of stuck with network. I was having problem with connecting to wifi networks. Now the problem was that the network settings show the wifi networks available but when I ...
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19 views

how to install ksymoops on Ubuntu 14.04

I want to analyze kernel crash(Oops) using ksymoops. I am trying to install ksymoops on Ubuntu 14.04(LTS) 64 bit using command sudo apt-get install ksymoops but unable to install. Below mentioned ...
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23 views

Kernel compilation

I'm trying to compile a source Linux kernel (version linux-3.10.48). Using the make menuconfig command, all the configurations are done and the .config file is saved, but when I'm compiling the main ...
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46 views

kernel 3.13.0.32 Fan RPMs greatly increased

I have just updated the kernel from 3.13.0-30 to 3.13.0-32 for Ubuntu 14.04 that has all "stable" updates. As soon as I rebooted (several times) the two computer fans went from the average 1400 RPM ...
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10 views

EDCA do not prioritize the traffic correctly on atheros card

I am trying to make some tests on my Atheros card (3com, 11a/b/g Wireless card, 3CRPPAG175). I observed that for Voice and Video packets the band is divided by half. I expected that Voice will be ...
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64 views

Important installations failed

I have a new computer with ubuntu 12.04 LTS ready installed. I get a message telling me to install an important security update 'Linux kernel image for version 3.5.0 on 64bit x86 SMP, but install ...
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20 views

Syslog kernel ehci-pci errors (-19)

There are much the same error messages (20+ per second!) in my syslog: Jul 14 22:17:17 laptop-joost kernel: [ 5074.090203] ehci-pci 0000:00:1d.0: port 1 resume error -19 What does this message ...
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13 views

My Gateway's BCM57765/57785 SD card reader isn't working

The device will not show up with "sudo fdisk -l". This is not just a corrupt card, it's been reoccurring for every card I try. This is the output from the dmesg [ 21.835685] mmcblk0: unable to ...
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26 views

Ubuntu server 14.04 kernel panic at boot

Since when I installed netatalk on Ubuntu server 14.04 I get a kernel panic at boot. I think netatalk is the cause because I can see the word "appletalk" many times in the kernel panic screen. I've ...
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36 views

Booting into current kernel disables networking, virtual keyboard

I have a PowerEdge 300 running Ubuntu 14.04 LTS. A couple of dist-upgrades ago, my SSH connection died partway through and I can no longer boot cleanly. If I boot in to the current kernel (3.13), I ...
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15 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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31 views

Hyper-V console input weird characters

I am currently testing remote console access into an Ubuntu 14.04 VM running on Hyper-v 2012 R2 using WMI and incomplete/weird characters are being sent from Hyper-v in place of the actual login ...
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41 views

Kernel panic after installing 64-bit Ubuntu

recently discovered that my computer was 64-bit, and not 32-bit as I had originally thought, so I tried to install 64-bit Ubuntu. The live session (on a flash drive) booted up fine, and I installed it ...
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21 views

Ubuntu: Trouble with modprobe: 'Invalid Module Format', yet works after insmod

I am having a problem with Ubuntu not properly recognising a custom made kernel module. The kernel module is a spoof of raw1394 so that programs that look for the presence of a raw1394 module in ...
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25 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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36 views

Mysql failed to start

i tried to restore a db backup to a newly created database, suddenly its starts showing error. Can't connect to local MySQL server through socket /var/run/mysqld/mysqld.sock so i checked ...
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14 views

Compiling a (specific) kernel module

I'm looking to compile a .c file which is said to be a kernel module. I tried to create a Makefile but still got errors. Specifically I am trying to compile https://github.com/JanmanX/HID-Apple This ...
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14 views

missing sbin/hotplug in Ubuntu

Im using Ubuntu and I cannot find /sbin/hotplug. did anything replace it? how does it handle hotplugging? I read that kernel calls it for notifying user space when hotplug event happens. I also ...
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16 views

Want to know how how secure my system is with current settings

My system is at kernel 3.15.2 Mainline. I have Enabled the firewall with all ports closed. I have very strong passwords set for BIOS, Drive Encryption, and login SSH is Disabled. I have installed ...
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139 views

Guest Additions on Ubuntu can't find kernel headers

EDIT: Installing the lastest VirtualBox version made it work. I can't install VirtualBox's Guest Additions on Ubuntu. I've already did this, sudo apt-get install build-essential ...
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638 views

Can't upgrade kernel to 3.13.0-30 on 14.04

I think I broke something with apt on my system. I'm trying to update the kernel to 3.13.0-30, but when I run apt-get I'm getting the following output: Reading package lists... Done Building ...
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88 views

How to make Huawei 4G module ME909u-521 work on Ubuntu?

I'm having some trouble having an Internet connection on 4G with Ubuntu (latest version, latest kernel). I had no trouble making my Huawei E3276 LTE dongle work. Now I'm trying to connect my ...
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15 views

Non Sudoer Access to a Kernel Module

Is it possible to access a kernel module if a user is not sudoer? I am trying to access a KVM, which is kernel module, as non-sudoer but I am getting an error: Could not access KVM kernel module: ...
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29 views

issues after cleaning out old kernels and system update resulting in latest update 3.13.0-30-generic

I just had an issue running system update (not enough space on /boot). So I found a solution on askubuntu suggesting that I free up space by deleting old kernels. So just to play it safe I only ...