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

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Ubuntu kernel doesn't boot up right

I compiled a Ubuntu 15.04 kernel last night and installed it this morning. It showed up fine in my grub but when I tried to boot it, it booted me to my Ubuntu 14.04 instaed. What is going on? Also, ...
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54 views

Removing Kernels from grub

My grub has the following versions which I want to remove. Ubuntu, with Linux 4.1.0-rc5-next-20150529 Ubuntu, with Linux 4.1.0-rc5-next-20150529.old Ubuntu, with Linux 4.1.0-rc4-next-20150525 ...
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112 views

Upgraded a virtual guest system: /dev/disk/uuid… does not exit

I recently upgraded my Ubuntu 14.04 (kubuntu), running as a guest inside VirtualBox 4.3.12 hosted by Windows 7 Enterprise, 64 bit. All ran fine until yesterday - when I tried to start the new ...
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65 views

How to add a Kernel from another distro

I've been using archlinux with a patched kernel on my surface pro 3. I switched to ubuntu now and want to use the kernel that includes all the patches from arch with ubuntu. What is the best way to ...
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151 views

TSC unstable switching to hpet

Current clocksource is hpet, which simply does not work with the applications I am trying to run and acpi_pm gives the same errors. I need TSC to work. I already disabled intel_pstate and set failover ...
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97 views

Can't upgrade kernal after installing Nvidia drivers

A while back I set up an installation of Ubuntu 14.04.1. Part of this process, I installed Nvidia drivers from the Ubuntu Software Center. Everything went ok and I never thought anything about it ...
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1k 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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188 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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154 views

What might cause “version 'KERNEL_VERSION' has bad syntax: version number does not start with digit” during update-initramfs -u

When I run sudo update-initramfs -u I get the error output dpkg: warning: version 'KERNEL_VERSION' has bad syntax: version number does not start with digit update-initramfs: Generating ...
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53 views

Do all currently supported Ubuntu releases have the same version of Linux kernel?

Do currently supported Ubuntu release (such as 12.04, 14.04, 14.10, 15.04) have the same versions of Linux Kernel? Or older Ubuntu releases may not have as recent Linux kernel as newer Ubuntu ...
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59 views

Undetected Screen on my laptop since kenel 3.13.0-45

In Kubuntu 14.04 LTS, since kernel update 3.13.0-45, the laptop display remains black after boot. The system is running (I can fully access it via rsh) and the graphic card also (for external ...
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59 views

problem with kernel

In the past I had tried to update the Ubuntu kernel with that found on http://www.kernel.org/. Due to some problems I had to revert the changes as my kernel image didn't boot well. Since then I get ...
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142 views

How to add driver to dkms?

I want wi-fi driver (bcmwl) automaticly included into kernel after each update. Now I need to reinstall package bcmwl after each kernel update. Without it driver isn't loaded. How to configure this ...
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160 views

Can't install/remove packages - update-initramfs with little space on /boot

When I try to remove any package, I get (Reading database ... 604878 files and directories currently installed.) Removing bootchart (0.90.2-8ubuntu2) ... [skipped] update-initramfs: Generating ...
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302 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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17 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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360 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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113 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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537 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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812 views

libkmod: Error ../libkmod/libkmod-config.c:686 kmod_config_parse: /etc/modprobe./blacklist-nouveau.conf line 5 ignoring bad line starting with 'alia'

libkmod: Error ../libkmod/libkmod-config.c:686 kmod_config_parse: /etc/modprobe./blacklist-nouveau.conf line 5 ignoring bad line starting with 'alia' I started getting this recently then today it ...
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33 views

How to build a separate kernel in the home directory

I'm a linux newbie. How does one build a separate kernel on the home directory other than the usual /usr/src/linux location. Is it possible to do so? Can someone elaborate the steps?
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34 views

Load_Cycle_Cont increase quick / green hdd dead

an old bug is still there: I use a normal hdd, and the Load_Cycle_Count increade very quick. Every few secounds go the hdd to the park position and is wake up again. One hdd i lost because this bug. ...
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178 views

How to generate linux-tools packages for customized kernel?

How to generate linux-tools and linux-cloud-tools packages for customized kernel by using Ubuntu build scripts? Tried to add do_tools=true which generates ...
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25 views

One time “firmware” upgrade script

I was wondering how you could make a script so that on first boot it changes files to a specific parameters? So it would be like if I just installed a fresh kernel. I want to run a script once and ...
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262 views

Kernel Panic - not syncing on Ubuntu 12.04

Yesterday I was updating my ubuntu from 10.04 to 12.04. I have a laptop, a compaq presario v6000, with that system only: One HD for Linux, no virtuabox, and so on. For update my Ubuntu I used the ...
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157 views

Why do most of my drivers not load after updating kernel to 3.13.0-36?

I recently upgraded my system with a new motherboard, and reinstalled Trusty to have an AMD64 system (old motherboard was 32-bit). Reinstallation (side-by-side), with 14.04.01 LTS went fine and new ...
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408 views

update-grub ignores GRUB_CMDLINE_LINUX in /etc/default/grub when generating menu.lst

I created /etc/default/grub with the contents GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1". When I run update-grub, I expect these additional arguments to be appended to the kernel lines in ...
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1k views

How do I fix this error? dkms.conf: Error! No 'BUILT_MODULE_NAME' directive specified for record #0 Error! Bad conf file

I am using Ubuntu 14.04.1 LTS Does anyone know how to fix this Dkms.conf error? dkms.conf: Error! No 'BUILT_MODULE_NAME' directive specified for record #0. Error! Bad conf file. File: does not ...
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310 views

how to enable hyperZ on radeon hd 5000 series?

I have surfed around the web to enabling hyperZ by adding this parameter R600_DEBUG=hyperz, but where I must put it? Is it at /etc/default/grub ? And what the difference between R600_DEBUG=hyperz ; ...
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38 views

Kernel update plans for Ubuntu

Is there a site where we can see which kernels we will most likely be getting with upcoming Ubuntu releases? I'm personally thinking if I should install the 3.13.7.x kernel manually or waiting to get ...
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100 views

Error compiling Kernel-aodv for ARM

I'm about to implement AODV on ARM board SabreLite and I'm facing some problems. So, I use the latest version of AODV located here (http://sourceforge.net/projects/aodvuu/). I've follow the ...
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53 views

ubuntu server crash after build.sh run

I have a build server with Ubuntu. And in my source code there is typical build.sh to invoke the make file in order to compile the source code. But suddenly the server crashed and I found the below ...
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1k views

Tp_smapi on Thinkpad T440

I have a Thinkpad T440 with Ubuntu 14.04 (using i3wm). I have had trouble installing tp_smapi. I successfully installed it with dpkg -- can't remember whether I used apt or just downloaded it ...
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469 views

Could not find a kernel image on LiveCD 14.04 LTS

I downloaded the ISO of Ubuntu 14.04 LTS 4 times from 4 different official mirrors and when I use them they all gave me this message, I can not even get to the menu to check the disk. Could not find ...
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83 views

Ubuntu 12.04 ATI Driver

Good day, So i just installed Ubuntu 12.04 LTS (i'm now to Ubuntu and even Linux systems, but i've bored of the lot of brainfuck with Windows systems) So, i installed Steam and then 2 games (Left 4 ...
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239 views

Computer continously boots after Kernel Version 3.13.5 installed on Ubuntu 13.10

there is some strange thing that happened after I installed Kernel 3.13.5 on Ubuntu 13.10. After restart I selected new installed Kernel in GRUB. After that Ubuntu starts up like usually and I can ...
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2k views

Can't read private key DEPMOD

I am a brand new user of Ubuntu 12.04. I have never used Linux. I am attempting to install CDEmu, but I am running into a problem. I have downloaded the files and extracted them to a folder on my ...
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75 views

How to patch kernel to get some hardware working

Some info: I have a patch file vaio-full-3.2.2.patch which I downloaded from here. Well, if I patch the kernel with it, it is supposed to get some hardware working, such as the light sensor that ...
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109 views

If possible, How to upgrade to Ubuntu 13.10 while keeping kernel 3.2 from 12.04?

To expand my question, I would like to know how to upgrade Ubuntu 12. 04. 0 (kernel version 3. 2, compatible with the Intel GMA3600 driver provided with the package cedarview-drm) to Ubuntu 13. 10, ...
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429 views

None of the peripherals(eth, USB ) working after upgrading to kernel version 3.8.5 in Ubuntu 12.04 LTS

I have been using Ubuntu from a long time but I had never been in the depth of Ubuntu. At present I am using Ubuntu 12.04 LTS. It was getting hanged randomly and fast when I was using Firefox. I ...
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364 views

Where can I download Linux-signed-image kernels?

I like to test new kernels but as I'm using a notebook with UEFI I just only limited to regular updates. Is there any repository where I can download the package linux-image-signed-3.XX-X-generic? ...
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294 views

How to upgrade or downgrade the Kernel in Ubuntu (to any stable or testing release)

When I report a bug I may be asked to "try out the latest upstream Kernel", how do I do that? I see a lot of version specific answers to this question here on ask ubuntu, what are the general ...
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64 views

How are events generated in linux?

I am very new to Linux. I was actually wondering how the application gets different system events. Eg : 1. A media player getting a button press notification 2. Battery charge low event I ...
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178 views

How to Auto rebuild my module to new Kernel?

New to linux, after doing this: http://ubuntuforums.org/showthread.php?t=2092934 I got my wifi up and running, ignorantly, i clicked to update my computer and it came with a new kernel, but it killed ...
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145 views

About removing old kernels

I am trying to remove my used kernels since my /boot is going low. Here I have a chicken and egg problem. First I try to remove the kernel with command: sudo apt-get autoremove linux-image-... and ...
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665 views

Do the AMD proprietary drivers even work in Ubuntu 13.10/Kernel 3.11?

I was looking at the system requirements for the latest beta proprietary driver on AMD's website and it said "Linux kernel 2.6 or above (up to 3.10)". However the unofficial AMD proprietary driver ...
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5k views

hostapd Failed to update rate sets in kernel module

I'm getting this error launching hostapd with minimal conf Failed to update rate sets in kernel module I've just installed Ubuntu-GNOME 13.04. When I was using Ubuntu 12.04 did not receive this ...
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2k views

Installing Ubuntu-Linux on Virtualbox (Virtual Machine)

I downloaded virtualbox for mac and the Ubuntu Linux iso. I have tried to install the iso on a virtual machine I set up using virtualbox. I keep getting this message, [ 7.409131] Kernel panic -not ...
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56 views

Virtualbox and Header Updates

I am using Ubuntu 12.04 LTS and VirtualBox 4.1.12 The last 3 (Header) updates have resulted in VirtualBox not working immediately after the header update. I searched this forum and found this ...
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207 views

Kernel upgrade 3.5.0-39-generic prevents virtual box from running

I just performed the kernel upgrade as part of the regular system upgrade. As usually on previous kernel upgrades, I had to install the kernel headers and recompile VirtualBox drivers. This process ...