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

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0answers
3 views

problem in compiling raspberry pi kernel on ubuntu 12.04,same on ubuntu 14.04

i am trying to compile linux kernel for raspberry pi when i use the command ARCH=arm CROSS_COMPILE=${CCPREFIX} make oldconfig my terminal stuck at Physical address of main memory (PHYS_OFFSET) ...
0
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1answer
34 views

Double (different) key press detected

I have Windows 8 and Ubuntu 14.10 as dual boot. I have PS2 keyboard. Sometimes randomly (can't reproduce yet) Ubuntu detects multiple different key presses when I press specific buttons. Some buttons ...
13
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3answers
2k views

OOM killer not working?

For what I understand, when the system is close to have no free memory, the kernel should start to kill processes to regain some memory. But in my system this does not happen at all. Suppose a simple ...
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0answers
21 views

Stuck in upgrade loop

When i want to "upgrade" i get this message sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get ...
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0answers
8 views

Post Boot Kernel Panics

I've been having an issue as of late. It happens when I try to play Dota 2. I get into a match, and sometimes my computer will crash randomly leaving this error: Keep in mind these crashes are ...
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0answers
3 views

wn-block (0 , 0) call trace install

I have big trouble with my PC. i have dual booth ubuntu and windows 7. When i'm recovery my windows 7, i got grub rescue boot. When i boot from USB which contains Ubuntu operating system, i am seeing ...
10
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3answers
30k views

How do I get the kernel source code?

I am planning to write some device drivers and I need to get the Linux kernel source. My Linux kernel version is 3.2.0-23-generic-pae and I downloaded the image from this. In many of the articles I ...
0
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1answer
17 views

Need Help to troubleshoot building of custom kernel on Ubuntu 14.04

I need some help about building a custom kernel on Ubuntu 14.04 (Trusty Tahr). It is not my first time to compile kernels, but I faced the problem to build only on Ubuntu 14.04. When I try to build ...
0
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1answer
13 views

how to edit /arch/x86/kernel/setup.c?

i would like to add a print statement to this setup.c file and would like to see it in my messages when kernel executes start_kernel()... printk(KERN_INFO "m_name (put your name here): ...
1
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1answer
818 views

Synaptic touchpad on laptop not working after update

I have found this solution from a thread a while ago but its temporary fix only: This seems to be a bug in 12.04.2. As stated in comments, a simple fix would be unloading the mouse driver ...
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0answers
21 views

Who is behind nvidia.ko?

Were the files nvidia.ko and nvidia-uvm.ko loaded by the Ubuntu update or were they made by the NVidia corporation?
10
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3answers
12k views

How to skip kernel update?

I am running Ubuntu 12.04.1 LTS i686 on VirtulBox. Every time I check the updates, there's a new Linux kernel. If I install the new kernel, I have to install the Virtulbox Guest Additions again and ...
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0answers
146 views

black screen since kernel 3.13.0-45 on ASUS F200M

My Asus F200m is running Kubuntu 14.04 LTS for a while : Every thing is perfect and it seems it uses Intel 7th Generation CPU and Intel HD Graphics. Then a kernel update to 3.13.0-45.generic and now ...
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3answers
1k views

problem with update

when I try to update and type: sudo apt-get update I get this error E: Problem executing scripts APT::Update::Post-Invoke-Success 'test -x /usr/bin/apt-show-versions || exit 0 ; apt-show-versions ...
76
votes
5answers
42k views

Why is swap being used even though I have plenty of free RAM?

I thought the whole essence of swap was to act as a temporary storage safety net when RAM was full but my swap partition is constantly being used even though I sometimes have as much as 3GB free RAM. ...
5
votes
1answer
8k views

Kernel Update : Kvm disabled by bios

I read a text about kernel stable and I updated my kernel to 3.6.1. And I solved problems like WIFI and resolution but I cant solve kvm disabled by BIOS. Before update I didn't see this KVM : Disabled ...
22
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4answers
1k views

Why doesn't Ubuntu remove old kernels automatically?

I wonder why Ubuntu won't remove the old kernels automatically. Surely nothing is perfect and things can go wrong, so in case a update doesn't work, having a backup kernel maybe great. But it would ...
8
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1answer
1k views

nVidia driver reset after each kernel update

I am using the official nVidia driver because my card (GeForce 750 Ti) isn't yet supported by the Ubuntu one. Every time the kernel updates, my system breaks. I've formatted my system two-three times ...
0
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1answer
23 views

Cannot install Kernel Security updates in 14.10

I cannot install some security updates to Ubuntu 14.10 (Utopic Unicorn) 64bit, which are kernel updates. Those are the updates. I cannot install them. In settings, I have everything ticked. ...
0
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0answers
647 views

vmhgfs module not compilable for VMware Tools 9.9.0 (Fusion7.1) after Ubuntu Linux kernel update to 3.13.0-46-generic?

vmhgfs module not compilable for VMware Tools 9.9.0 (Fusion7.1) and VMware Tools 9.9.2 (Fusion7.1.1 Build 2496486) after Ubuntu Linux kernel update to 3.13.0-46-generic (Febr. 2015) (Shared Folder ...
0
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1answer
24 views

Compile kernel module? (Live USB)

is it possible to compile a kernel module on a live USB stick with Ubuntu 14.04 LTS? I have now tried for hours but all my attempts have failed. What i've done. Installed the linux headers. Created ...
0
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0answers
21 views

D-Link DWA-171 Driver installation problem

Hello so i downloaded official D-Link DWA-171 drivers http://www.dlink.com/xk/sq/support/product/dwa-171-wireless-ac-dual-band-usb-adapter, But when i try to install them in terminal using ...
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0answers
31 views

[Don't Bother Answering]I insert my cd for ubuntu 14.04.02 and it doesn't recognize it, please help [on hold]

It goes like this, my wireless is not working on my laptop running ubuntu, when it was running xp it worked perfectly (my wireless card is broadcom corporation wireless 1397 wlan mini card). So i ...
0
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3answers
149 views

wrong kernel running after install

I have installed Ubuntu 14.04 from unetbootin. When it reboots after the install, uname -r says: 3.5.0-17-generic ..this means that no modules have loaded for the kernel that is actually installed ...
34
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10answers
64k views

Error: kernel headers not found. (But they are in place)

I'm trying to install the Guest Additions in VirtualBox 4.04. Host OS is Ubuntu desktop 11.04 64bit, guest OS is Ubuntu server 11.10 64bit. $ sudo ./VBoxLinuxAdditions.run After some output this ...
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1answer
4k views

How can I revert to the previous kernel version w/out dependency issues?

Since ubuntu updated my install to 3.2.0-37-generic, my laptop fan constantly runs. I never had this issue with the previous kernel versions. To fix this problem, I would like to revert back to the ...
3
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3answers
11k views

Is my kernel version OK or I have to update it?

I'm using Ubuntu Precise : $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=12.04 DISTRIB_CODENAME=precise DISTRIB_DESCRIPTION="Ubuntu 12.04.1 LTS" but my kernel version is: $ uname -r ...
0
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0answers
23 views

Why is my kernel not upgraded to the latest version? [duplicate]

My server runs Ubuntu 12.04.5 LTS. I try to keep it up to date as possible by doing sudo apt-get update && sudo apt-get upgrade regularly. So far I was assuming that this would update the ...
0
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2answers
112 views

Why my kernel is not the latest for 14.04?

My kernel is currently Linux scv 3.13.0-34-generic #60-Ubuntu SMP Wed Aug 13 15:45:27 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux But I know it should be 3.13.0-45-generic #74 Why is it not updated by ...
0
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2answers
50 views

How do I install linux headers when I am getting a “has no installation candidate” error

Primary Problem I am unable to run any virtualization software. Namely Vmware or Virtualbox. Since both of them asks me to install (or produces some error which pints to ) installing build essentials ...
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0answers
62 views

Ubuntu 14.04.1/2 installation: Unable to install the selected kernel

I am installing a new Ubuntu 14.04.1 on my Server (HP ProLiant DL360 G4) from an USB Stick. The installation runs until the step "Install the base system". Then I get this Message: Unable to install ...
0
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1answer
37 views

Understanding how the Ubuntu kernel works [on hold]

I have been using Ubuntu for a while now and I pretty much go around advertising it everywhere. But I never really understood much about the functioning of the kernel itself. I want to understand the ...
0
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1answer
58 views

Can't build Virtualbox-dkms - mismatched kernel and headers

I have previously used VirtualBox on my Ubuntu 14.10 machine, but I had not used it in the last two months. When I tried to start a VM, I got the following error: WARNING: The character device ...
1
vote
1answer
4k views

How can I troubleshoot why Ubuntu keeps crashing on my laptop?

I have a one year old Acer Aspire 4752G netbook running Kubuntu 12.04 LTS with all the latest distribution updates installed. It was previously running great until about a week ago when it suddenly ...
0
votes
1answer
42 views

Wireless connection issue in Kernel 3.16

I have upgraded my Dell Vostro 1720 laptop to 14.04.2, Kernel 3.16 (from 14.02, Kernel 3.13) but now I have no access to wireless networks. My Broadcom driver PCI is 14e4:432b. I've spent hours ...
0
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0answers
13 views

New ubuntu server hanging… trying to locate root cause

Thanks to anyone willing to help me locating a root cause. I presumably think it is due to limited memory causing the server to halt. After a reboot the machine works for a day or 2 and then hangs. ...
0
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0answers
16 views

How can i automatically upgrade to mainline kernel

I am using Ubuntu 14.04. I know how to upgrade the kernel manually and I manually upgraded the kernel to 3.18.2. Is there any way to upgrade kernel to 3.19 automatically?
0
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0answers
21 views

Unable to compile INTEL 82599 driver on Ubuntu 14.04

I am trying to compile the drivers on my machine and I am getting the following errors: ~/ixgbe-3.21.2/src$ make install make -C /lib/modules/3.13.0-46-generic/build ...
0
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0answers
16 views

Java algorithm performance difference between Linux and Windows

We observe a very significant performance difference of an algorithm in java between Linux (ubuntu) and Windows. The difference is 3x-4x in favor of Windows. Test machine is i3770 quad core (8 logical ...
0
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0answers
9 views

Unable to resume from stand-by

I usually let my machine suspend to ram after time X. That used to work very well but within the last few days, I have had problems multiple times to wake my machine up and get it back into working ...
9
votes
3answers
8k views

How to remove Kernel/LTS Enablement Stack?

this question regarding the LTS Enablement Stack has actually two parts: I installed Linux 3.5.0-x on Precise 64bit via sudo apt-get install linux-generic-lts-quantal xserver-xorg-lts-quantal . As ...
0
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1answer
54 views

Problem in installation of Ubuntu in Virtualbox

I was trying to install Ubuntu 32 bits in Virtualbox but the following error occurred this kernel requires an x86-64 cpu but only detected an i686 cpu unable to boot please use a kernel ...
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0answers
26 views

how to fix broadcom drivers for ubuntu touch?

How can i solve my issue to get ubuntu touch running on my phone? I just create new defconfig for Ubuntu Touch to port on Galaxy S2 Plus, after compile it without problems, since my device doesn't ...
0
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0answers
18 views

Segmentation fault at 7f59002b3978 ip 00007f59…(long message)

I was writing a program last night and I was using g++. I was running the program and left it in between to get some food. When I came back I forgot that the program was running and I shut down my PC. ...
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0answers
32 views

Lubuntu 14.04 boot errors

I'm trying to run lubuntu 14.04 (i386) on a old computer. I set up a bootable usb drive. After I choose to run lubuntu "without instalation" I get these errors: 02064241 pci 0000:00:Oa* BAR 4: error ...
0
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1answer
45 views

Black borders around windows/apps missing from dash after kernel update on Ubuntu 14.04

I'm having some weird issues with Ubuntu 14.04 64-bit. I updated the kernel to 3.18 (or at least I think I did...) using this guide here: ...
3
votes
1answer
2k views

VBox on 14.04, Kernel driver not installed (rc=-1908)

On Installing Virtual box on Ubuntu 14.04, I got following message: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a ...
0
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1answer
62 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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0answers
20 views

Watchdog for rebooting on keyboardless appliance, if kernel is stuck at startup [duplicate]

I have an Ubuntu 14.04, which occasionally hangs at boot, just displaying Plymouth splash. After removing quiet splash from /etc/default/grub it reveals that last line of kernel log output (virtual ...
0
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2answers
442 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, ...