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

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Error calling EVIOCSKEYCODE

Using 14.04, I have the following error displayed when booting up: Error calling EVIOCSKEYCODE It doesn't cause any problems with the system, but I would still like to remove it. Now, I managed ...
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1answer
16 views

Kernel Panic on xubuntu toughbook cf-19

I'm on a toughbook cf 19 xubuntu and I have a kernel panic about 10 times a day. Do you know what can be the problem?
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26 views

Kernel panic occured in Ubuntu Trusty tahr i386

I recently downloaded the i386 version of Ubuntu 14.04 and tried using it from a live CD (I burned). But while loading, I saw the message Kernel panic occured switching back to text console. But ...
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48 views

Alfa AWUS051NH v.2 doesn't work on Ubuntu 14.04

I have a brand new Alfa AWUS051NH v.2 but it shows up and disapears permanently on a Ubuntu 14.04 and somtimes the result is a kernel panic (switching to text mode and stoping the machine). I noticed ...
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37 views

USB Device Issues - ongoing enumeration

Since I want to run a custom driver I have a custom Kernel running (3.13.11). Recently I tried to build the 3.18 series. Since I failed to find the Ubuntu patches I build a vanilla version. I tried ...
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New to Ubuntu, Kernel question

I'm new to Ubuntu and I'm using 14.10. I have a Rosewill Wireless card, n600PCE, and it's giving me a driver for Linux Kernel 2.4 or 2.6. As I am new, these will work, right? It's not like trying to ...
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38 views

Dual Boot Ubuntu from USB on a Mac: “Loop not found” and “Load Kernel First” Error in GRUB

I have the Mac version of Ubuntu loaded onto a USB, booted using ReFINd with an EFI partition. All runs until I select the Ubuntu EFI Boot in reFINd. Once loading begins, I get a "Loop not found", ...
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1answer
79 views

Can I make a Bootable USB with an ISO something other than a LIVE ISO?

Am I constrained to run Ubuntu LIVE ISO's only on a bootable USB? All other distros aside - can I make a Bootable USB with an ISO something other than a LIVE ISO? To test this I expected I could ...
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1answer
32 views

Trouble loading kernel 3.18

I received 3.18 in apt update but it does not show up on recovery list and I cant seem to get the missing parts. How do I get 3.18 to load?
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29 views

Cannot resolve unmet dependencies [duplicate]

I have attempted all solutions in the previous thread regarding this flipping issue and it continues to drive me crazy... below are the sequence of events that take place.. agiles@agiles-23-1015:~$ ...
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11 views

Kubuntu cannot start, I'm thrown into busybox

What I did Changed the HD from my previous sony lap to a Lenovo P580, added the Windows drivers required and that worked, I did not check Kubuntu at this time but Grub2 was working. Several months ...
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34 views

radeon dpm: why my power state 0 has high values which are not aligned with dmesg?

# cat /sys/kernel/debug/dri/64/radeon_pm_info uvd vclk: 0 dclk: 0 power level 0 sclk: 37500 mclk: 150000 vddc: 950 vddci: 875 pcie gen: 3 # cat /sys/class/drm/card0/device/power_dpm_state ...
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1answer
57 views

radeon_pm_info: What are vclk, dclk, sclk, mclk, vddc and vddci?

# cat /sys/kernel/debug/dri/64/radeon_pm_info uvd vclk: 0 dclk: 0 power level 0 sclk: 37500 mclk: 150000 vddc: 950 vddci: 875 pcie gen: 3 I'd like to know what are these vclk, dclk, sclk, ...
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1answer
72 views

what is the best way to upgrade my kernel version?

I have ubuntu 14.04 LTS and a 3.17.4 kernel. i want to know if i should purge my installed kernel and install a new one or apply a patch to it.
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1answer
58 views

Ubuntu 14.04 taking a lot of time to start

I am using Dell Inspiron N5010 core i3 processor and 4gb RAM ! My laptop takes up a lot of time to start up! typing dmesg in terminal gave these results ! [50.214177] audit_printk_skb: 150 callbacks ...
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19 views

can not build kernel 12.04 omap4

there is no way to build custom kernel for 12.04-omap4 pandaboard. I already tried all examples in internet available. Actually it worked until kernel version linux-ti-omap4-3.2.0-1455. The newly once ...
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1answer
108 views

linux-image-3.13.0-43-generic

I have just installed Ubuntu 12.04 LTS and while updating (upgrading) I received an error message: Error: BrokenCount>0. I was searching and trying everything I found here, but the package ...
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1answer
68 views

“Kernal panic - not syncing: Timeout synchronizing machine check over CPUs” Every time I boot from a live USB

I have been stuck on this for months but I built a new pc and every time I try and run linux off a live usb I get this after picking try ubuntu in the grub menu Sorry for cutting some of the ends ...
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23 views

System doesn't start on one kernel version

I have a weird problem. I've recently installed quite much different stuff for GPU and network card, I also updated the kernel many times. I don't know how many of them was actually necessary. And ...
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1answer
44 views

Unable to install Ubuntu on Asus F551MA

It's not possible to install either Ubuntu 14.04.1 or Ubuntu 14.10 on Asus F551MA, it goes kernel panic, switching back to text console and brutally freezes. Checking on launchpad, I found it's a bug ...
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1answer
38 views

Why does Ubuntu(as well as all the linux distros) hangs while copying? [closed]

I have noticed a lot that all the linux distributions hangs while copying files, why does this happens? Isn't this a bug thats present in the linux for a long time. Do only I happend to be the only ...
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1answer
353 views

Nvidia 331 on kernel 3.18.1

ThinkPad t540p, running Ubuntu 14.10 and kernel 3.18.1. Trying to install bumblebee and as I understand it get nvidia-331 to work... Installing nvidia-331 yields an error and dpkg-reconfigure does ...
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1answer
57 views

How to remove kernel?

I have installed two kernel version 3.10.48 and 3.17.6 for project. As I am not requiring 3.10.48 any more, I wanted to remove that version as it is taking up almost 10GB of my disk space. How should ...
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1answer
12 views

Which package did kernel modules move to between LTS 12.04 to LTS 14.04?

The kernel modules (/lib/modules/<kernel-version>/*/*.ko) files that used to be in linux-image- packages in LTS 12.04 are no longer there. This includes GPU DRM kernel drivers for video cards ...
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43 views

How to prevent kernel or any broadcast 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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1answer
21 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
68 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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64 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
57 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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45 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
194 views

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

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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32 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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19 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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133 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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52 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
74 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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34 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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105 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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2answers
349 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
36 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
24 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 ...
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1answer
97 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
337 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
79 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
41 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
191 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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39 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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1answer
271 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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1answer
597 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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36 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 ...