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

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Ubuntu 14.10 Kernel boot problem

yesterday I installed 14.10 on my laptop. Everything worked fine I installed the proprietary nvidia drivers and updated my intel graphics drivers. I rebooted after that and everything worked. Today I ...
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7 views

Kernel messages scrolling over Grub background image during boot?

I display a Grub custom background image at boot time(Ubuntu 14.10). I would like this background image to stay in place during the kernel startup and to scroll the kernel messages over the Grub ...
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1answer
13 views

L1 + L2 cache hardware information with lscpu different to information from Intel & Windows

My CPU is an INTEL Celeron N2930 Bay Trail-M 1.83GHZ to (2.16GHZ Turbo) I get by typing lscpu in Terminal a different value of L1 + L2 Cache (Hardware Information) in comparison to the Intel + ...
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1answer
42 views

Unity gone after upgrading 14.10 to latest 3.16 kernel

After upgrading 14.10 to the latest 3.16 kernel today, my Unity GUI is messed up. I was able to create a folder and open it, but if I navigate to the /bin folder, right-click on bash, then select Run, ...
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0answers
28 views

How do I “unpin” the kernel?

Earlier this year I had to pin my kernel because an update came down the pipe that broke WINE compatibility with Win16 apps. I followed the directions here: How to skip kernel update? It appears as ...
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1answer
22 views

indicator-cpufreq not working with kernel 3.17?

indicator-cpufreq have just two option (powersave and performance) after upgrade to kernel 3.17. Is there any way to fix it? I reinstall this program but still have same problem.
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18 views

Failure to boot after a possible power failure during upgrade from Ubuntu 13.10 to 14.04

I left my machine to upgrade from 13.10 to 14.04 overnight. I think there was a power failture. When I switched it on in the morning I got these messages: scanning fr Btrfs filesystems run-init: ...
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9 views

No Wireless drive detection in new built kernel for reverse bisecting

I need to do a reverse bisect for a bug and I narrowed the versions down to two. Now, I need to build a 8 new kernels. However, when I built them, the kernel cannot detect my wifi drive so that I can ...
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2answers
24 views

Problem With Guest Additions in Ubuntu Server [Virtual Box]

I have a problem installing Guest additions in ubuntu server with kernel 3.13.0-39-generic I install whole headers for this kernel with $ sudo apt-get install build-essential linux-headers-$(uname ...
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1answer
18 views

How can I find most stable and newest kernel edition for Ubuntu?

I want to choose a newest and most stable version Linux kernel for Ubuntu. Is it newest longterm version in http://kernel.org version(and download equivalent version in ...
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21 views

Problem installing NVIDIA drivers - mismatched kernel files(?)

This question was more long-winded than planned. In summary, I'm having trouble upgrading to cuda-6.5 with Linux 14.04. I think it's because I have some files for linux-kernel 3.11 and others for ...
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24 views

Low resolution on 14.10

The Ubuntu kernel team asked me to try out kernel 3.17-rc5. In installed that kernel, rebooted, and performed the requested testing. However ever since that the X.Org driver for my ATI graphics has ...
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3answers
40 views

Linux headers generics

I have a trouble with the linux headers, when i use the command uname to check my version it is different from the version in usr/src/. I tried to download (with deleting the current version) but i ...
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0answers
4 views

Is there a backport of ulogd2 for 12.04 precise?

I have a server with Ubuntu 12.04 running on Rackspace cloud, configured to use the latest kernel. A week ago or so I rebooted the server and it booted on a new kernel 3.17.1 (that had been released ...
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27 views

Lubuntu kernel headers configure

I get this error: ERROR: The kernel header file '/lib/modules/3.13.0-39-generic/build/include/linux/version.h' does not exist. The most likely reason for this is that the kernel ...
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27 views

Failed to load ZFS module stack

Have been using zfs on linux (zfs-native/stable) raidz on 14.04 for several months without hitch and decided to move across some more important files as considered it trustworthy or I guess "stable" ...
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1answer
31 views

Unable to Install 14.1 on Dell Studio 1747 Laptop, Intel i7, 10GB RAM - Kernel error BUG: Soft Lockup

Update: I have now attempted to install 14.01, 13.1, and 12.04.5 with the same result. I have been attempting to install Ubuntu 14.1 on a Dell Studio 1747 laptop with a Intel i7 Core Processor. Have ...
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2answers
81 views

Boot fail after update kernel in ubuntu 14.04

When I want to install with this command sudo dpkg -i linux-image-3.14.24-031424-generic_3.14.24-031424.201411141736_amd64.deb I got follow error: grub-probe: error: unknown filesystem. run-parts: ...
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2answers
28 views

If I have an x64 capable CPU, but install a x86 Ubuntu distribution, can I still run 64bit executables? [duplicate]

Also, would it be possible to install a x64 kernel, to transform it to a full 64bit installation?
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17 views

Cannot boot from CD…Kernel PAE missing

Attempting to load Ubuntu on a Dell D600 laptop that had its hard disk wiped clean. It will not boot from the CD. Error message says "PAE is disabled" How do I enable PAE?
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2answers
30 views

Ubuntu distro upgrade - does it install new kernel?

I performed a distro upgrade via apt-get and upgrade-tool from saucy 13.10 to trusty 14.04. It seemed to go OK and the "about" now tells me I am running 14.04, however uname -a says I am running ...
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1answer
49 views

Can't install linux-headers-3.13.0.35-generic, crashes on VMWare and VirtualBox

i've installed ubuntu 14.10 and i got some troubles trying to run a virtual machine. I've tried all to run VirtualBox and VMWare, but without success. Both programs ask me for ...
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1answer
17 views

Is there a way to integrate Node.js into the kernel core so that the system has this node running as a module.?

I want to integrate node.js into the kernel as a module. So that i could develop a common html+js+css app as a desktop app. How can this be done ? It would be nice if ubuntu had this feature.
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39 views

Intel Xeon Phi 7120p on 14.04LTS

I recently bought Intel Xeon Phi 7120p and plugged it into a computer running Ubuntu 14.04 LTS. The card shows up in lspci, but then I don't know what to do next. Should I install updated MPSS ...
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0answers
6 views

PCIE module options

Exactly after last kernel upgrade, my HDD started to make errors, switch to Read-only operating system, etc. I'm using a PCIE card to connect this SATA2 HDD to my Ubuntu Server. dmesg lists some ...
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37 views

Ubuntu Touch Kernel Architecture and Comparison with Android

I am new to Ubuntu-Touch OS and would really appreciate if anyone could provide some information regarding the Ubuntu Touch Kernel architecture. I have read the Ubuntu Touch internals pdf but there ...
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13 views

How to deal with very frequent failure to inform the kernel about modifications to partition?

Moving multiple ext4 and vfat partitions in gparted 0.19.0 on Ubuntu 14.10 constantly causes Error informing the kernel about modifications to partition /dev/sda13 -- Invalid argument. This means ...
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1answer
17 views

How to install Open Virtual Switch

I want to install the Open Virtual Switch. How can I do so? I read the openvswitch.org page but that was not well explained and I did not understand it, perhaps because I am new to Linux. Can any one ...
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0answers
18 views

Kernel Tuning Tools?

How to improve performance of a Kernel ? Are there any tuning tools to improve Kernel performance ? Thank you.
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0answers
7 views

What does it mean for /proc/kpagecount to be zero

for some entries in /proc/kpagecount, all the 64 bit entry is zeros and yet the page is allocated (confirmed from /proc/kpageflags). What does it mean for kpagecount to be zero for certain physical ...
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1answer
83 views

When will kernel 3.14 be available in the repositories?

I see that kernel 3.14.1 is available for Trusty at http://kernel.ubuntu.com/~kernel-ppa/mainline/ When will this kernel be available for upgrade via the Ubuntu repositories. (I know that I can ...
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1answer
44 views

virtualbox not recognising existing machine in ubuntu 14.04 LTS

I have install windows xp in Ubuntu host.I was working fine but suddenly when I restarted my computer virtualbox manager does not recognise my machine.I had reinstall,updated kernel and tried to ...
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10 views

My kexec is broken with Utopic Unicorn

I am unable to do proper warm reboots with kexec since the release upgrade to Ubuntu 14.10 on my Lenovo ThinkPad T410. When I get to Starting new kernel..., the system does a cold reboot (full reboot ...
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73 views

Ubuntu frustrating crash

I am experiencing a freeze once in a while. When my computer freezes, only the mouse can move but it cannot click anything. In addition, I cannot switch to terminal using alt + f1 or ctrl + alt + ...
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1answer
41 views

uname -r returns the wrong kernel version

I upgraded from Ubuntu 12 to 14.04 and ran a check at the end of the process to verify everything went right. here is the output of uname -a Linux odoo 2.6.32-042stab092.3 #1 SMP Sun Jul 20 13:27:24 ...
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33 views

Upgrading Kernel Breaks Several Features

I've recently made the switch from Windows to Ubuntu 14.04. I'm sure you can imagine my excitement when I started the OS, and found it to be almost completely ready to go out of the box! After a few ...
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27 views

Error after start instalation

Can this be disabled? thx for any help
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0answers
59 views

Encrypted disk kernel warning - initramfs image won't boot

After an upgrade to 14.10 on my netbook, I can only manage to boot with the old kernel remaining from the previous 14.04 installation. For the most recent kernels, I get this warning when they are ...
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0answers
69 views

Dell 5737 freezes on ubuntu14 everytime during resume from suspend

My dell 5737 laptop was running all fine on 12.04. As soon as I upgraded to 14.04 I am consistenly running into system freeze everytime system attempts to resume from suspend. This happens when I ...
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1answer
49 views

Can't delete all unused kernels

I am trying to remove all my unused kernels but it is not working. My dpkg --list | grep linux-image result is as follows: ii linux-image-3.13.0-24-generic 3.13.0-24.46 ...
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10 views

Modules in /proc/modules address issue

If I cat of the /proc/modules the RAM address location of modules is always 0x0000000000000000. Any ideas? vmnet 51316 13 - Live 0x0000000000000000 (OX) parport_pc 32701 0 - Live 0x0000000000000000 ...
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0answers
9 views

Rewite/update a packet using kernel hook

I am trying to update DSCP tag in packet. For that i need to create a hook and my hook will update DSCP tag of packet. How can i rewrite DSCP tag with my data? On conclusion, i want to know how a ...
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1answer
43 views

There's a way ubuntu's kernel supports my video card?

Well my problem is my old gaming laptop is not compatible with the ubuntu kernel, (as far as i read) that happened since i upgraded to ubuntu 13.10, my video card is an ATI Radeon HD 3650 and each ...
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1answer
30 views

What is the easiest way to clean the boot folder in Ubuntu 14.04 when you have 0 bytes left [duplicate]

I have tried to look on ask Ubuntu and all answers say the same thing. I have tried lots of them and still no luck; is Ubuntu 14.04 code specific? Please help. : )
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2answers
63 views

custom iso, error rebuilding initrd (mkinitramfs)

I'm creating a custom ISO (starting with ubuntu-14.04.1-server-amd64.iso) and wanting to upgrade it's kernel to latest (for me that's 3.13.0-38-generic). I'm following the instructions in ...
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1answer
34 views

Upgrade from 12.04 to 14.04. Kernel not upgraded

I had upgraded a VPS server from 12.04 to 14.04, but recently noticed that that the kernel is 2.6.32. I am not an expert Linux user but unfortunately, it is my responsibility. I have checked how to ...
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24 views

Why `apt-get dist-upgrade` in EC2 image does not update the kernel?

I've built a system running Ubuntu 14.04 on EC2, using the AMI from Ubuntu's cloud-images repository. The AMI includes kernel 3.13.0-37, but 3.13.0-39 is available as an update. After running ...
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21 views

How do I implement multiple keymaps into a kernel?

my problem is as follows: I have a custom-made kernel that has no functionality in regards of changing the keyboard mapping. It is possible to compile a different keymap into it, but that's it. The ...
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28 views

Unable to boot Ubuntu 14.04 on Dell Precision T7500

I tried to install Ubuntu 14.04 64-bit on my DELL Precision T7500 workstation. But even after trying for many times, the installation process hangs in between. So I installed Ubntu 13.10 64-bit. Later ...
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0answers
53 views

Kernel panic Ubuntu 14.04 kernel 3.13.0.39

When booting the computer I get the message kernel panic. I reboot the computer, and on this second boot I get the screen where I can choose kernel versions. If I choose kernel 3.13.0.3 generic the ...