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

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How to prevent kernel messages from flooding the TTYs?

Is there a way to stop the ttys from being flooded by the kernel messages? The display shows a continuous stream of messages (which are also logged in the /var/log directory). Every text I key in ...
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0answers
12 views

install openstack Juno on Ubuntu 12.10 or 13.04

i have Vlan issues with Ubuntu Trusty 14.04 since its using kernel 3.13 i need linux kernel 3.3 or higher (according to https://github.com/openvswitch/ovs/blob/master/FAQ.md Q: VLANs don't work.) ...
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1answer
14 views

Why am I getting “trusty” in a path while running ubuntu 12.04?

I'm running ubuntu 12.04 and on a different partition there is a ubuntu 14.04 distribution. When running dmesg one entry is the following: [ 3161.519138] WARNING: CPU: 1 PID: 4782 at ...
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1answer
16 views

Where can i find linux 3.8.11 kernel image in order to build wacom drivers for Samsung Chromebook 2

New to Ubuntu/Linux, so please bare with me. My setup: Samsung Chromebook 2 -> running Ubuntu via crouton (trusty with KDE). Im in the process of installing the Wacom Intuos drawing tablet, and i ...
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0answers
19 views

How do I load a module that has no signature in ubuntu 12.04?

I've got a custom module for a Mightex camera that has been tested for ubuntu 12.04 which I'm using. I have installed it however something is not working. I think it has to do with this dmesg output: ...
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1answer
35 views

Update all software with update manager XUbuntu 12.04.1 without updating kernel

I'm running a laptop with mobility radeon hd 4330 and I have to run kernel <= 3.2 for the proprietary legacy drivers to work. How can I update the packages on my system using the update manager ...
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0answers
29 views

kernel panic on boot

I'm having some trouble booting ubuntu 14.04. The most weird thing is that after the kernel panic error shows up, if I restart the laptop, grub appears (not showing up when the panic occurred), and ...
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1answer
62 views

Unable to boot after installing systemd-services and changing the init parameter on boot [duplicate]

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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18 views

Grub2 Add Kernal Boot Flags

In grub I need to add kernel flags to one entry but not another. I plan on doing this by adding a custom boot loader. If this is the script I plan on using to boot the OS, where do I place the kernel ...
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9 views

Netem command for GE Model

Am using Netem commands to check network impairments, In this regard I would like to use Gillbert Elliot model to check the loss pattern. Some where I found a command like this, tc qdisc change dev ...
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45 views

'Remix' Live CD won't boot. Kernel panic - not syncing: Attempted to kill init

So I'm creating a Ubuntu Remix CD based on this guide: https://help.ubuntu.com/community/LiveCDCustomizationFromScratch I'm pretty sure I've followed all of the tasks listed there. I move the test ...
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23 views

kernel-panic related to Asus sd-card-reader

I've just observed the same kernel panic 4 times on 2 different notebooks: Asus N550JV (running Linux Mint 16 ~ Ubuntu 13.10) Asus Zenbook UX32VD (running Linux Mint 17 ~ Ubuntu 14.04 LTS) These ...
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1answer
25 views

Right way to completely clean up old kernels in terminal

I have been going through various questions about how to clean up old Linux kernels. They all seem to have different answers and they are old, so someone is bound to say the question is too old and ...
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0answers
20 views

latest kernel killed my ThinkPad W520 hotkeys

for some reason after latest kernel/nvidia and other updates on my 12.04.5 LTS running kernel Linux ThinkPad-W520 3.13.0-43-generic #72~precise1-Ubuntu SMP Tue Dec 9 12:14:18 UTC 2014 x86_64 x86_64 ...
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0answers
17 views

missing kernel header

I am trying to compile this /* Kernel Programming */ #define MODULE #define LINUX #define __KERNEL__ #include <linux/module.h> /* Needed by all modules */ #include <linux/kernel.h> /* ...
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74 views

Ubuntu Kernel Update 3.13.0-43 causes graphics problems and Kernel Panic

So when I did an update through the terminal to kernel 3.13.0-43, and I rebooted my system - it booted but it only had one resolution, 1024x768, when that's not even my largest resolution (my largest ...
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1answer
134 views

AMD Omega drivers don't work with kernel 3.17.6 on Trusty?

I just installed new fglrx drivers on Ubuntu 14.04. New AMD drivers are distribution-specific, so downloaded them. Since it says they re compatible with kernel up to 3.17 version on release notes, ...
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1answer
28 views

Where is kernel/user.c?

I am doing some changes on ubuntu linux source code. I used find / -name user.c command to locate user.c but failed. Where is it? My working environment is ubuntu14.04.
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2answers
16 views

How to apply an “undocumented” kernel patch

I am unable to use the touchpad on my new GigaByte P35 v2. I seem to have the problem documented here (elantech touchpad not detected on gigabyte laptop), and here ...
0
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1answer
54 views

Ubuntu 12.04 no wlan0 interface

I installed Ubuntu 12.04 on an Acer e5-571-31KM. Dmesg and lspci output indicate a wireless Network adapter was found, but according to ifconfig there is no wlan0 interface. Unfortunately I have no ...
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2answers
123 views

Why doesn't apt-get autoremove remove my old kernels?

My boot partition is on a SSD, so it doesn't have room for more than about 8 installed kernel versions, and eventually some kernel update will fail to install because my boot partition is full of old ...
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1answer
53 views

Problem with dpkg -p

I'm trying to have informations about kernels installed with dpkg -s but the return is weird (and in french), but not seems to work: $ dpkg -p linux-image-3.16.0-28-generic dpkg-query: le paquet « ...
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1answer
29 views

Latest kernel update (.43) crashes my pae system

I have been happily running a 14.04 system but the latest kernel update has frozen my system. The background; I have been using the 32 bit ubuntu distribution (I have no idea why) and booting with the ...
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1answer
58 views

Cups job stuck at: processing since …“Waiting for printer to become available.”

When I reboot, a queued print job will get printed, after that jobs don't print with the following message: processing since "Waiting for printer to become available." Also, when I run the vanilla ...
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0answers
31 views

uvd not responding… cant start ubuntu

I am new to ubuntu. When I installed (stand alone) ubuntu 14.04.1 on my laptop, it wont load and it shows error that uvd not responding a few times and then shows uvd not initialized and hangs I tried ...
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79 views

Ubuntu 14.10 touchscreen not recognized anymore on XPS 15 9530 Haswell

I've a Dell XPS 15 with Ubuntu 14.10 and I've just realized that my touchscreen does not work anymore. It's not even recognized: $ dmesg |grep -i touch [ 3.179897] psmouse serio1: synaptics: ...
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0answers
143 views

Dependencies issues linux-image-3.13.0-43-generic

Was setting up Postfix but didn't get too far, because Ubuntu returned an dependencies error. Tried to fix this but I cant find the cause to the problem. dpkg: dependency problems prevent ...
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0answers
21 views

free space in boot for upgrade to 14.04

Can not upgrade to 14.04. Not enough free space in /boot again. No obsolete kernels detectable. What gives? :~$ ls /boot/ abi-3.11.0-13-generic initrd.img-3.11.0-26-generic ...
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2answers
46 views

How to uninstall kernel modules?

I m doing my project in ubuntu on kernel version 3.10.48. But due to compatible problems, we had to change the version (recompile the kernel) to 3.17.6. Now, as I had assigned 50 GB to ubuntu only 9 ...
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0answers
15 views

Write udev rules for serial device

I have one concern regarding device name assign by kernel like /dev/sda* , /dev/sdb* ... etc but i would like to write rules for assign name to new pattern like "/dev/sc**"(starting with modified ...
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0answers
10 views

how to avoid loosing kernel changes throgh updates?

I'v modified kernel to enable SPIDEV on Pandaboard Ubuntu. Unfortunately I am loosing this devices every kernel update. Is there any posibility to avoid it, so I do not need another day to compile the ...
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35 views

Configure webcam

I see a garbled image when using my web cam using Cheese or Skype using uvcvideo kernel module. I am aware that this is a known bug, but does it have a solution yet? Links: Kernel modules with ...
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0answers
32 views

Periodic lockups showing kernel: [154858.820009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed… render ring idle

System is Ubuntu 14.04.1 LTS with kernel 3.13.0-43-generic, I have noticed the lockups periodically since 09/13/2014. I can't remember what kernel version was in use then possibly kernel ...
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2answers
64 views

I think I accidentally removed the current linux kernel when trying to free up space in /boot

Sorry for being a bit long-winded, but I am not sure what has happened so I'll try to state what has happened as completely as possible. I am currently logged in to the system and it's running. It is ...
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0answers
18 views

Can't install any app [duplicate]

I am facing problem installing / updating any app on my system. I did some Google and came to know /boot is 99% full. I tried increasing it but everything failed because everything gets stuck at gzip: ...
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0answers
7 views

linux modules do not autload after updating

I did apt-get update and since that moment, something in config files probably changed, however since that moment modules in my kernel (kernel wasn't updated) do not autoload. I have to manually load ...
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0answers
29 views

Deleting Old Kernels But Saying I Dont Have Correct Permissions [duplicate]

Okay So I Have Tried To Download Synaptic And Allll The Other Thing This Forum Tells You To Do And Nothing Is Working, I Am Trying To Install The Recent Update For Ubuntu 14.04 But For Some Reason ...
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0answers
66 views

Default Grub2 entry doesn't point lastest kernel version + “selinuxfs mount failed” boot error: how to repair?

I installed Ubuntu 14.04 in multi-boot with linux (Mandriva 2011/Grub Legacy). First it seemed to work. But on my first update in Ubuntu, I was "strongly adviced" by the system to update grub and got ...
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3answers
747 views

Boot hangs after upgrade to kernel 3.13.0-43

I just upgraded from 3.13.0-40 to 3.13.0-43, and now I can't boot- my system hangs at the ubuntu splash screen with the five orange dots. My fans are all running full-tilt, and the system is ...
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0answers
314 views

Ubuntu 14.04 kernel update from 3.13.0-40 to 3.13.0-43 caused my laptop to hang

Ubuntu 14.04, just updated from kernel 3.13.0-40-generic to 3.13.0-43-generic and now I can not boot my laptop. It seemed that the new kernel came with some Navidia drivers that caused this problem. ...
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0answers
26 views

How to upgrade/ remove recompiled kernel version in Ubuntu 14.04?

I m working on process migration and for adding extra utilities, I recompiled my previous kernel version 3.13.0-24 generic to 3.10.48. Now I want to install Checkpoint/Restart tools (CRIU) which are ...
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2answers
34 views

Unable to upload files with any browser on Ubuntu 14.04, why?

please, I need your help. I have a weird problem. I am unable to upload files to gmail, gdrive, facebook nor other website with Ubuntu 14.04 I am able to ping google, watch youtube videos and ...
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1answer
45 views

Problem with VMware Workstation 8.06

I am a new Linux user, and I'm currently using the latest version of Lubuntu. I want to create a virtual machine with VMware because in VirtualBox I am not able to use DirectX in Windows XP. Even ...
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0answers
33 views

.conf in /etc/modprobe.d does not work [14.10]

I have that horrible buzzing sound in my left headphone (it's the same in windows, I think it's a hardware defect) so I want the sound chipset to automatically power off to get rid of that buzz sound ...
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0answers
25 views

Terminal command to send an interrupt to mimic a new peripheral device connection?

Is there a way to send an interrupt indicating a connection of a new peripheral device? Being precise I want a standard user command that could perhaps mimic ps/2 mouse connection. My mouse keeps ...
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1answer
27 views

Change kernel config without compiling

Is it possible to change the kernel configuration of the running kernel without compiling it myself? In debian-based systems, there's the config file of the current kernel in /boot, e.g. ...
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2answers
81 views

Upgrading Linux Kernel 3.11 to 3.13 for Ubuntu 14.04 [duplicate]

When I upgraded to Ubuntu 14.04, apparently my kernel was supposed to upgrade from 3.11 to 3.13. Unfortunately, the kernel upgrade did not complete. As a result, I have several files for 3.13, but am ...
0
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2answers
93 views

kernel is outdated

I have troubles with updating my kernel. I'm running Kubuntu 14.04. uname -r output: 3.13.0-32-generic I clearly see newer versions in repos with sudo dpkg --list 'linux-image*': ... ...
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0answers
22 views

Which part of the kernel powers on/off USB ports? How - the internals?

Please refer to this post: Power on/off USB ports . It is one thing to blindly replicate the codes in a terminal and get the desired results. I wish to know which part of the kernel does this work, ...
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2answers
43 views

Looking for a driver for a tablet, I heard that I “need a kernel”- what does that mean? [closed]

I'm new to everything and I've heard a lot about tablet drivers that work with a kernel. However, I don't know what a kernel is and how to use/download it. I've seen a lot of codes with the drivers ...