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

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Logitech USB headset holding up parts of boot process

I am having problems with my Logitech USB Headset. When I have my headset plugged in when I turn on my computer, it takes longer to boot than usual. When I log in, all fonts are not anti-aliased, the ...
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1answer
25 views

Why one would use default Ubuntu kernel instead of latest stable kernel?

I've been using Ubuntu for long time. However, I'm still confused about one issue. Why one would use default Ubuntu kernel(3.16 atm) instead of latest stable kernel(3.18 atm)? Is this only because of ...
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11 views

Recent kernel upgrades broke ability to install VNC/network-related software?

I recently ran some upgrades and noticed that a kernel upgrade was being held back, which I figured was because I had VirtualBox installed with the guest additions (which changes a few things in the ...
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9 views

Boot fail running 14.04 - have boot-repair pastebin

Not sure where next to turn I've tried boot-repair and been given then the pastebin info http://paste.ubuntu.com/9972046/ The error message is that /dev/mapper/ubuntu--vg-root can't be found I can ...
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66 views

Upgrading Linux Kernel 3.13.0-45-generic to 3.18.4

I wonder that is it possible to upgrade from any linux kernel to any other kernel? I'm having linux kernel 3.13.0 and i want to upgrade to 3.18.4. Release notes of 3.18.4 kernel says that all users ...
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How can I modify the Ubuntu-12.04 Server ISO to include non-default kernel and headers (lts-raring in my case)

I have an ISO which I am customizing via preseeding. I am able to customize it from the preseeding point of view but I want to do a little more. The ISO image I am using is the standard ...
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17 views

Boots from old kernel

Ran software update from Manager (Linux-3.13.0-44 is newest). When it finished, I went to Grub Customizer to remove old kernel listings. (Don't always do this, so I had kernels 3.13.0-32, 36, & 43 ...
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ERROR: wl_scan_notify_status : wlan0 Scan_results error (-22) direct kernel output to tty

I have been coding on my tty's lately on my Linux Mint 17.1 'Rebecca' machine, and I have noticed that the kernel will start spitting direct output, in particular the error "ERROR: ...
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2answers
28 views

Is there an Ubuntu distribution which is customized to run on the android kernel? [duplicate]

Every android device has a more or less customized kernel. Most of these are open source?!(I am not sure about the "most".) Is there a Linux or even better ubuntu distro which comes with has support ...
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30 views

How To dist-upgrade Without Upgrading Linux Kernel?

I am using Linux Kernel 3.19-RC5 with Oibaf graphics stack on Ubuntu Gnome and I am currently very happy with this setup. However, there is Linux Kernel 3.13.0-44 & few other packages available ...
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11 views

Kernel problem on TOSHIBA

I have a SAMSUNG with following specs Intel® Core™ i5-3210M CPU @ 2.50GHz × 4 Intel® Ivybridge Mobile 8 GB internal memory Ubuntu 14.04 64 bit Since quite some time now, my list of kernels ...
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unable to delete older kernel image files & folders in Ubuntu 12.04

Prior to posting I have made attempts to find the answers among existing posts, however I was unable to find anything which worked. I am trying to clean up a HD which has only 4GB of free space. On ...
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Ubuntu 13.11 Kernel panic - not syncing: Machine check from unknown source

My Inspiron N5010 with Ubuntu 13.11 doesn't BOOT and gives the error: Kernel panic - not syncing: Machine check with unknown source Rebooting in 30seconds Current kernel and all recovery modes ...
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63 views

Cannot remove old kernels or install any new packages

I have spent the last two days googling and mining forums to find a solution to this problem. When I try to install anything i get the same error saying that i have all these old kernels. I have tried ...
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1answer
112 views

Issue with linux-image-3.13.0-44-generic & linux-image-extra-3.13.0-44-generic

I've been using Ubuntu Server for a few months now. I'm getting the below OUTPUT after running sudo apt-get -f upgrade: Reading package lists... Done Building dependency tree Reading state ...
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26 views

swap memory value / percentage meaning

Swap memory can be set between 0 to 100 What Does It means when we set swap memory to .. ? swappiness= 0 Tells the kernel to avoid swapping processes out of physical memory for as long as ...
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6 views

Compiling and installing a 32-bit kernel on a 64-bit linux

I compiled 32-bit kernel on a 64-bit ubuntu and installed it. But when I tried to boot from it , it gave me an error: Failed to execute /init Kernel panic - not syncing: No init found And ...
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33 views

udev and eMMC rpbm partitions

I'm running into this bug: Fix udev rules to consider mmc rpmb partitions and trying to solve it using a udev rule. I haven't needed to learn anything about udev in the past, so have been reading up ...
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37 views

Linux Red hat vs Ubuntu , Which is best OS? [closed]

No offence but just asking . Which OS is better in terms of UI Security Linux Commands Popularity 3rd party Softwares available for OS Used by large companies
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1answer
32 views

problem in installation of ubuntu in virtualbox :(

i was trying to instal ubuntu 32 bits in virtualbox but i coudn't an error occured he said :"this kernel requires an x86-64 cpu but only detected an i686 cpu unable to boot plz use a kernel ...
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22 views

System Settings crashes immediately when opened after I installed Ubuntu 14.04

Since I've installed Ubuntu 14.04, System Settings refused to open. If I click on it, the mouse just turns into the loading symbol like it's trying to start up, then it crashes, telling me that Ubuntu ...
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59 views

Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

The server suddenly became unusable, I tried a reboot and it fails with the same kernel panic. I booted with splash and quiet removed. This is all I have: Begin: Running /scripts/local-premount ... ...
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1answer
63 views

kernel BUG at /build/buildd/linux-3.16.0/drivers/gpu/drm/radeon/radeon_s8.c:321!

I just bought a new Dell laptop with Windows 8 and am attempting to install Ubuntu 14.10. I used Startup Disk Creator with the PC Intel x86 desktop image to create a bootable Ubuntu USB drive with a ...
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8 views

X-cursor size decreased after Linux kernel upgrade

Compositing doesn't work well in ubuntu-mate 14.04 in kernel 3.13 so I upgraded the kernel to latest 3.19-rc5 where it works awesome. However, my xcursor's size has diminished. I tried changing ...
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22 views

Binding device to a driver module

I'm trying to understand better the process of binding a device to its driver. I have an USB tool (In System Programmer for Arduino) whose Id (Product and Vendor) are known. The driver, cdc_acm.ko, ...
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2answers
84 views

How to upgrade to the latest Kernel? [duplicate]

I would like to upgrade to the latest 3.17 Linux Kernel because it has support for the Xbox One Controller and I really want to test it out. I am running Ubuntu 14.10 64bit with the latest ...
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1answer
74 views

Problem installing upgrade 75 on 12.04

Since a recent minor version kernel upgrade attempt - 74 to 75 - I have been getting this set of errors using apt-get ... harveyp@harveyp:~$ sudo apt-get autoremove [sudo] password for harveyp: ...
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12 views

What does “acpi_pm” mean?

While researching clock source kernel parameters, I came across the following terms: tsc hpet acpi_pm If someone could tell me what acpi_pm is as the other two I found googling around.
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11 views

Compile kernel with specific config [duplicate]

I am on ubuntu and would like to compile a kernel + Con Kolivas patch for my netbook (with lubuntu) . The problem is my netbook is 32 bit and my ubuntu pc is 64 bit. If I take the .config from the ...
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26 views

/lib/modules/3.8.13/build folder missing

I am installing a Wi-Fi driver on to my BeagleBone Black with Angstrom running. As I was compiling the driver I got this error root@beaglebone:~/Desktop/WLAN-AIO-OSR/build# make BOARD_TYPE=arm ...
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15 views

How to build extra kernel package that contains aufs.ko module?

How to build extra kernel package that contains aufs.ko module? Thanks. We used these options which did not generate linux-image-extra package for our flavor. AUTOBUILD=1, full_build=true
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187 views

Upgrading to 3.18 kernel causes wireless not to work

So I got the 3.18 kernel working on my system (I can boot into Unity now: hooray!). Unfortunately, this seems to have broken my wifi. Wired ethernet is still working, but Network Manager isnt ...
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2answers
198 views

Upgrading from kernel 3.13 to 3.18 causes Unity not to load, wireless not to work (System specs included)

SYSTEM SPECS: Macbook Pro (64 bit), Ubuntu 14.04, kernel version: 3.13, graphics drivers: nvidia-331 Recently I've been experiencing wi-fi problems on a regular basis in 14.04 with kernel ...
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28 views

Installation Error :(

I tried Ubuntu 14.10 (64 & 32 Bit) & Ubuntu 12.10 (64 & 32 Bit) I get this error every time I select & entered "Install Ubuntu" I am installing Ubuntu using a USB [21.317787] Kernel ...
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1answer
42 views

Safely remove old files in /boot [duplicate]

which of these files is safe to delete to free space in /boot? For future needs, how can I know which files are in use and which ones are obsolete? Thanks root@ubu:/boot# ls -l total 153003 ...
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1answer
19 views

Run modprobe on startup

I need to run "sudo modprobe wacom" at startup to prevent an unrecoverable kernel panic (a blackscreen drop to terminal with repeating 1second audio looping and zero responsiveness) from occurring ...
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1answer
41 views

fatal error: linux/err.h: No such file or directory [duplicate]

What package should install for this header (err.h) is available? I need this library (linux/err.h) to compile a proprietary driver (kernel module) in Ubuntu 14.04 Server/Desktop 64bits
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NON-PAE Laptop Dell Latitude D620 [duplicate]

How to install Ubuntu 14.10 on a laptop without PAE? ( Dell Latitude D620 RAM 1 Gig HD 30 Gig )
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27 views

Missing initramfs from usb boot drive

Every time I try to boot up an Ubuntu distro on my laptop (11.10, 13.04, 13.10, 14.04, 14.10) I get this kernel panic message on boot: Kernel panic - not syncing: VFS: Unable to mount root fs on ...
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67 views

Kernel panic while installing CentOS 7 in VirtualBox

I have a laptop with Xubuntu desktop 14.10 , and I installed VirtualBox and updated it to the latest version . I'm trying to install CentOS 7 (source downloaded from the official site) as a VM, ...
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61 views

12.04 LTS: Kernel Update to 3.13.0-44 broke my-weather-indicator

After doing the kernel update today, my-weather-indicator disappeared from the indicator bar on my 12.04LTS boxes. If I try to start it manually, the icon flashes in the launcher for a couple of ...
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1answer
58 views

After updating the kernel I can't log into the desktop. Only see the wallpaper

Im using Ubuntu 14.10. I have been using Nvidia propitiatory drivers downloaded from Nvidia. Everything worked fine. In the morning I got an update to the kernel and I applied it. After restarting, ...
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1answer
71 views

Why does Update-Manager download more than one kernel image

Thanks for the opportunity to ask question. I have used Ubuntu for a long time, but this is my first "ask". I have tried searching for answer for my questions below - but could not find an answer, ...
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21 views

FlexMAC and Madwifi installation problem for Atheros WLAN Device

I'm trying to install FlexMAC to develop WLAN 802.11 specific protocol. I'm using Ubuntu 12.04. Machine configuration: root@f:/home/f/madwifi-0.9.3.1-FlexMAC-RA# lscpu ...
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31 views

Bad kernels upgrade, and it is impossible to delete them

I have a huge problem on my Ubuntu 14.04. It runs an 13.3.0-39 kernel. A while ago I wanted to update the kernel via Synaptic to 13.3.0-40 and 13.3.0-43. Unfortunately, the kernel upgrade did not ...
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28 views

boot to ram, squashfs filesystem and custom kernel

I am trying to boot my Ubuntu based custom linux OS to ram. I compile the kernel from scratch, so it does not have aufs or unionfs. I don't want to patch the kernel. It seems the live-boot-tools ...
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1answer
117 views

Can't connect to PPTP VPN with ufw enabled on Ubuntu 14.04 with kernel 3.18

Suddenly VPN disconnected and can't reconnect no longer on kernel 3.18.1, so I try to install kernel 3.18.2 but my problem still exist. But I can connect to VPN with 3.14 kernel easily. The output of ...
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1answer
22 views

Local version during kernel build broken

I'm trying to build a custom variant of the 3.13.0-43 kernel on Ubuntu 14.04. Following the normal procedure (directions posted at https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel) is not working for ...
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10 views

Subdivide CPU usage among different tasks in LTS 14.04 [duplicate]

I am fairly new to UBUNTU and maybe this is a naive question. I am working on a PC with multiple CPUs and I was wondering if there is a way to select how many CPUs a process has to use. For example: ...
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19 views

Kernel Error Message when installing /demo/repair

I got this error when trying to install /demo/repair disc for Ubuntu 14.10