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

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Kernel panic while booting preseed ISO for 14.04.2

https://help.ubuntu.com/community/Installation/UnattendedCD I'm following these instructions, attempting to set up a preseed install. When I boot the resulting ISO in vmware, it kernel panics: ...
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0answers
12 views

How come the kernel on up-to-date Ubuntu-14.04.2_LTS servers are not the same? 3.13 or 3.16

I have multiple servers running Ubuntu-14.04.2_LTS, just occurred to me that some are running the 3.13 kernel while others runs 3.16; all are maintained identically, so what would explain this?
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2answers
19 views

Remove kernel images [duplicate]

I need to free up some space in the /boot partition. Looking in another [thread][1] I found I should use sudo dpkg --list 'linux-image*' to locate and sudo apt-get remove linux-image-VERSION to ...
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0answers
4 views

Switching computers with a persistent usb

So, I'm Trying to create a USB drive to run the OS off of on several different computers, without installing anything to the computers themselves. I used pen drive Linux to create a boot-able USB and ...
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0answers
7 views

kernel panic-not syncing: VFS: unable to mount root fs on unknown block(2,0)

When I boot ubuntu 15.04 from usb, I got this problem: kernel panic-not syncing: VFS: unable to mount root fs on unknown block(2,0)
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9 views

Cannot run Ubuntu install dual boot from USB on X1 Carbon w/Win8.1 - kernel panic, VFS

I installed Ubuntu as dual-boot on X1 Carbon 3rd gen (with Windows 8.1, UEFI etc.; lets call it "Machine A"). I had some issue with Ubuntu there, so I removed like 3 partitions (from Windows tool) - ...
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0answers
29 views

Startup problem with Lubuntu 15.04

I installed Lubuntu 15.04 on my PC. It was running perfectly smoothly, so that a few days it is having a strange problem that happens sometimes, not all the time. What happens is that when I turn on ...
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0answers
46 views

amd driver catalyst 13.1 problem 15.04

I got a problem installing amd drivers. Here is the fglrx-install.log: Check if system has the tools required for installation. fglrx installation requires that the system have kernel headers. ...
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28 views

Kernel error message during boot

Every time when I start my laptop I see these error messages: What is the cause for them and how can I fix this problem?
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1answer
22 views

“Failed to build vmnet” for kernel 3.19

Because this answer is only for kernel 3.13, so I'd like to share a solution for the problem Failed to build vmnet for kernel 3.19 and earlier versions. Thus this is not my actual problem and is only ...
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0answers
8 views

Docker and AUFS with custom kernel issue

I followed the steps on this website to get AUFS compiled in a certain way to use as my drive pooling solution but now Docker service won't start on ubuntu. anyone got any ideas please? ...
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2answers
28 views

Error message with virtuabox with ubuntu as host

I installed virtuabox from their site and now I get this error message when trying to run VBox The vboxdrv kernel module is not loaded. Either there is no module available for the current ...
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2answers
33 views

Wrong headers for Linux version

I have an ODroid U2 running Ubuntu 14.04 LTS and Linux version 3.8.13.30. I am trying to get my USB WiFi dongle working through this tutorial. However, at the sudo dkms install 8192cu/1.10 stage, I ...
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1answer
81 views

Why Ubuntu 15.04 with kernel 3.19.0-15 is using significantly more power?

I've recently upgraded to 15.04 and immediately noticed significantly faster battery depletion and warmer case. My MacBook Air 6,2 would easily hold 10-12 hours on battery power with Ubuntu 14.10 and ...
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1answer
95 views

mei_me initialization failed at boot up

I have an "mei_me" error at system boot-up. May 2 17:47:39 florian-Linux kernel: [ 11.867542] mei_me 0000:00:16.0: irq 62 for MSI/MSI-X May 2 17:47:39 florian-Linux kernel: [ 11.870423] mei_me ...
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0answers
19 views

Need to get files back after losing all the linux-image-generic

What I was doing (not as important, just wanna make sure all the info is out there) I'm on Ubuntu 14.10, decided to upgrade to 15.04. I had to delete xorg-xserver because it was broken and Ubuntu ...
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1answer
14 views

Restore ZFS automount

I've upgraded to 15.04 and I found the package ubuntu-zfs to be broken on systemd. I found the bug description on GitHub but I don't know how the procedure to be done as described: The correct ...
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0answers
31 views

There is a way to patch AMD catalyst 14.12 in order to make it work with kernel 4.0.1?

here I go: my OS is Ubuntu 14.04. I was wondering about upgrading the kernel to the recent and latest stable 4.0.1 version (my current one is 3.16). Since I have already installed AMD Omega drivers ...
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1answer
71 views

Ubuntu 15.04 kernel version

I recently upgrade from 14.10 to ubuntu 15.04 and I was expected also the kernel to be upgraded from 3.16 to 3.19, but this wasn't happened! Why this problem? can I do manually upgrade of kernel? ...
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0answers
10 views

Receive notification on new kernel release

I would like to receive a notification (preferably rss digest) on each stable kernel release in http://kernel.ubuntu.com/~kernel-ppa/mainline/ Does anyone have an idea how to parse a new update into ...
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0answers
59 views

Something's wrong with my grub.cfg

I know that's pretty generic, but... I installed updates, which included a new kernel. I removed an old kernel and got: joliver@JOHN-DEV:~$ sudo apt-get purge linux-image-3.13.0-46-generic Reading ...
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1answer
152 views

Error message on booting up Ubuntu 14.04.2 [duplicate]

After upgrading from kernel linux-image-3.13.0-49-generic to linux- image-3.13.0-51-generic, I am getting this error message in dmesg on startup: [ 6.352555] mei_me 0000:00:16.0: irq 47 for MSI/MSI-X ...
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0answers
21 views

purging old kernels fails to remove old initrd files

Can't explain why... I assume it isn't safe to simply manually delete them, so some guidance would be appreciated. Here's a ls of my /boot directory (obviously, I'm running the 3.13.0-51 kernel): ...
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0answers
9 views

Having problems with negative monitor channel, intimidated!

When I try this command: aireplay-ng -1 0 mon0 -a xx:xx:xx:xx:xx:xx I get this output: No source MAC (-h) specified. Using the device MAC (xx:xx:xx:xx:xx:xx) 17:51:23 Waiting for beacon frame ...
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1answer
135 views

Starting version 219 after upgrading to 15.04

I upgraded to 15.04 just before the official release, and have since then been met with this message at boot : device descriptor read/64, error -32 and then : Starting version 219 I could ...
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0answers
22 views

cannot boot into login screen after uninstalling some kernel update packages

In Ubuntu 12.04, I tried to upgrade the kernel as required by a software XXX that I was installing. So as per XXX installation instructions, I installed these packages using apt-get: ...
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0answers
73 views

Slow boot on Ubuntu 15.04 during ACPI

The time seems to be wasted mainly between these two log lines. What could it be waiting for ? Apr 30 01:19:22 terodde kernel: [ 0.907820] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query honored via ...
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0answers
7 views

What exactly is command like “iso-scan” in grub?

In grub manual, it's not mentioned as a grub command. It passed right after linux command. The grub manual says about linux command: Command: linux file … Load a Linux kernel image from file. ...
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1answer
16 views

How to load a iptable matching module? Or is it required to load it expressly? Some related questions

I am running Ubuntu 14.04 LTS. I believe the following shows which iptables matching modules are loaded: sudo cat /proc/net/ip_tables_matches Question: I see conntrack listed three times. Why? ...
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42 views

ERROR: ../libkmod/libkmod.c:556 kmod_search_moddep() could not open moddep file

When I do the command iptables -L, I have this result : modprobe: ERROR: ../libkmod/libkmod.c:556 kmod_search_moddep() could not open moddep file '/lib/modules/3.8.0-38-generic/modules.dep.bin' ...
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14 views

ubuntu kernel-header issue : Couldn't find any package by regex 'linux-headers-3.14.32-xxxx-std-ipv6-64'

root@mylab:~# uname -a Linux mylab 3.14.32-xxxx-std-ipv6-64 #1 SMP Sat Feb 7 12:07:25 CET 2015 x86_64 x86_64 x86_64 GNU/Linux root@mylab:~# uname -r 3.14.32-xxxx-std-ipv6-64 root@mylab:~# dpkg -l | ...
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0answers
42 views

NVIDIA Driver Problem After New Kernel Build

I'm running Ubuntu 14.04 in my system. Recently I did a clean build from the source code and installed the new kernel but unfortunately when I try to start the new kernel, the desktop remains blank. ...
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0answers
9 views

Ubuntu kernel and microphone support

It seams the latest kernels used by Ubuntu do not support certain models of chips. I use Realtek ALC887-VD and my microphone does not work since the last kernel updates. I use 15.04, previously used ...
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2answers
186 views

linux-headers-3.16.0-36-generic can`t be installed (15.04)

I recently installed vmware player 6.0.5 for linux x86 and before installaton procces I run the command : sudo apt-get install build-essential linux-headers-$(uname -r) [sudo] password for bogdan: ...
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0answers
98 views

Error while starting ubuntu 15.04

After i have upgraded my Dell Latitude E5540 to Ubuntu 15.04 i have the following upon booting up ! Scanning for Btrfs filesystem [FAILED] Failed to start Load Kernel Modules. See "systemctl status ...
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1answer
30 views

When in Linux boot process are filesystems mounted from /etc/fstab?

Question: When in Ubuntu Linux boot process are filesystems (from /etc/fstab) mounted? Rational: I defined the following shared-folders on my Ubuntu VirtualBox VM. openstack@ubuntu:~$ grep ...
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1answer
52 views

Laptop monitor plus two external monitors via dockstation

I have a Dell XPS13 (9333, Intel HD graphics 4400), running Ubuntu 14.04 and connected to a Dell monitor U2412M via VGA to mini DP. What I would like to do is to connect to another monitor (same make ...
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1answer
259 views

nVidia drivers on 15.04 kernel 3.19 stalling system load

all. I recently bombed my Zorin OS 9 system by unsuccessfully installing kernel 4.0 so I decided to go back to Ubuntu - which I haven't used since 10.04 - and am stumbling across some issues. First is ...
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0answers
6 views

Bad Data CRC can't get kernel image while booting imx6 board

I am trying to boot imx6 board with ARM Linux Kernel. But it is saying cant get kernel Image. I am getting the following when seen in minicom: Booting kernel from Legacy Image at 10800000 ... Image ...
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1answer
46 views

Ubuntu 14.04.2 i386 boot hang after installation but fix by using live USB's initrd.lz

Linux newbie here, and would like some support from the community for a boot problem I am seeing. I recently put Ubuntu 14.04.2 (i386) on a AMD Kabini AM1 5350 CPU + Gigabyte AM1M-S2H mobo using live ...
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0answers
13 views

Wimax in XUbuntu?

I have a problem, I am using the Intel Centrino Wireless-N + WiMAX 6150 as wifi and wimax card but I can only use wifi. I googled a lot about drivers and stuff but I can not find the way to activate ...
0
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1answer
20 views

no kernel loaded

I installed Ubuntu on my laptop, which already had Windows 8.1 installed. Then I uninstalled Ubuntu but when I restart my laptop it boots to GRUB recovery: GNU GRUB version 1.97 beta 4 [Minimal ...
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0answers
90 views

Screen brightness issue Toshiba Portège after 15.04 upgrade

I have a toshiba portège Z30-A-13P. I can no longer adjust my screen brightness after upgrading ubuntu to version 15.04 (kernel 3.19). The screen brightness (as well as the touchpad) didn't work ...
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0answers
27 views

How to change the Delayed Acknowledgement timer? (14.04) [migrated]

I am trying to set different values for the timer of the Delayed Acknowledgement and see the different behaviors at packet level. I expected this to be a kernel level option but I can't locate ...
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1answer
665 views

problem with systemd installation

I tried two different methods but could not install systemd 1st method from here, 2nd method from here Confirmation that systemd is not installed: edward@computer:~$ file /lib/systemd/systemd ...
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0answers
96 views

How to add kernel-package header

I want to install kernel-package, but this error shown : Building dependency tree Reading state information... Done Package kernel-package is not available, but is referred to by another package. ...
34
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3answers
16k views

Should I upgrade to the “mainline” kernels?

Newer "mainline" versions of the kernel are available from the Ubuntu kernel team, e.g. 3.4 and 3.5, while Ubuntu 12.04 is on 3.2. What are the mainline kernels? Are they better than my existing ...
38
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8answers
149k views

How to update kernel to the latest mainline version without any Distro-upgrade?

Currently I'm running Linux-3.0 and I want to update it to Linux-3.3.1 the latest stable kernel release as mentioned at http://www.kernel.org. Can I update to 3.3.1 in Ubuntu without any risk of ...
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2answers
17k views

How Can I Roll Back a Kernel Update?

An update for Ubuntu was available today and it installed the generic kernel 2.6.38.11.26. After doing so networking is no longer functioning correctly. My Acer Aspire 4520 has an Nvidia Network card ...
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6answers
19k views

How to install “perf” monitoring tool?

Could someone help me to install perf monitoring tool, please?