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

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201 views

Kernel Headers for Ubuntu 15.04

Today I upgraded by 14.10 VM to 15.04. Since it's a virtual machine (via VirtualBox), I needed to install guest additions. However, the installation fails saying (in /var/log/vboxadd-install.log): ...
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1answer
43 views

Xubuntu 15.04 Gummiboot Kernel Panic

So I installed my new Xubuntu 15.04 in EFI mode. I installed gummiboot via sudo apt-get install gummiboot and activating sudo gummiboot install. On my HP Notebook I have to enter the efi file as ...
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1answer
986 views

Does Ubuntu automatically release memory allocated by a C program as the program terminates?

I have written a C program containing code allocating memory using the malloc() function. If I don't free up the memory using the free() function, will Ubuntu release it automatically?
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0answers
23 views

14.04 Wi-Fi is not working with Intel centrino 2200

I have a centrino 2200 Wi-Fi card http://www.intel.com/content/www/us/en/wireless-products/centrino-wireless-n-2200-desktop.html running Ubuntu 14.04 trusty. It connects to the network, but then I ...
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0answers
37 views

Help understanding or preventing this Kernel Panic?

Recently, I recieved a Kernel Panic while playing a game. I have not the slightest clue on how to even understand the panic, but I have provided few pictures that show it all. Other relevent info: ...
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0answers
55 views

Downgrade back to stock 3.16 kernel from 3.18.5 on Ubuntu 14.10

I upgraded the kernel to 3.18.5 for my Xbox One controller to use it, but I guess I failed because after I rebooted my laptop, it did a login loop after I logged in. Then I installed the kernel ...
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0answers
24 views

PCC ACPI Probe Failed on ubuntu after installing Debian [duplicate]

I just bought a new computer this week.So, I am new to this NVIDIA issues.I installed an Ubuntu 15.04 on my system and used an official driver which was downloaded from the nvidia website.I ...
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2answers
72 views

Unable to boot after installing new kernel

recently I installed the latest kernel 4.1.0-rc3 in my Ubuntu 14.04 LTS 64-bit.When I did reboot after make install, it is getting stuck after the grub listing the following error mentioning that it ...
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2answers
106 views

kernel version 3.13 even I have ubuntu 14.04.2

I am using 14.04.2 probably it was upgraded over 14.04.1 but my kernel version seems still 3.13. According to 14.04.2 it seems that 3.16. I did not understand why it was not upgraded ...
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0answers
71 views

X-Server won't start after kernel update on Dell Latitude E7440 with linux mint and docking station [closed]

After udpating my Linux mint to a newer kernel (from 3.16.0.37 to 3.19.3) my X-server won't start. I tried doing dpkg-reconfigure xserver-xorg, deleting ~/.config/monitors.xml and sudo X -configure. ...
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0answers
107 views

Amd driver for ubuntu 15.04 not working

I have an A4-5000 apu with HD8330 amd graphics. on ubuntu 14.04 i had the propertary drivers but after installing 15.04 and switching to the propertary drivers it can not even open the catalys control ...
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1answer
28 views

How do I opt in to Early Preview of LTS enablement stack?

As explained in the wiki article LTS Enablement Stacks, The Ubuntu LTS enablement stacks provide newer kernel and X support for existing LTS releases. These can be installed manually, or are ...
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0answers
28 views

WiMAX in Ubuntu

About two weeks ago I asked a question about how to connect to WiMAX. And today I have done some research, and I want to share it with everyone. I don't know if this is going to be useful for someone, ...
0
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1answer
16 views

how to do a kernel bisection

I posted a bug on luanchpad a few days back (https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1452166). I have been told to do a kernel bisection from 3.16 to 3.19. Can someone give me a simple ...
0
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1answer
457 views

How to Upgrade Linux Kernel 4.0.2?

I followed the steps for Updating the Kernel 4.0.2 from the source How To Install/Upgrade Linux Kernel and finally got this error. root@surfer:/home/algosig# sudo dpkg -i ...
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2answers
25 views

How to remove a newer kernel while booted with the older kernel?

I have two kernels installed on my system. 3.16... and 3.19.3...I'm running Ubuntu 14.10 and it came with the 3.16...kernel. I decided to try the latest possible kernel (3.19.3...), but I sometimes ...
0
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1answer
37 views

Anyway to get full bash working on Windows? [closed]

So I love the Linux CLI environment and I like to use bash for almost every task I can. For some reasons too long to explain, I'm leaving my Ubuntu 14.04 LTS to move to Windows 7. I have heard there ...
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0answers
32 views

how to use a different linux-image than the one is currently being used in ubuntu 14.02?

this are the linux-images I have and I am currently using 3.13.0-51 $ dpkg -l linux-image-\* | grep ^ii ii linux-image-3.13.0-51-generic 3.13.0-51.84 ...
3
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1answer
112 views

Ubuntu on DigitalOcean does not use the latest kernel

On a digialocean's VPS, I have some linux kernel installed. This is the result when I do sudo update-grub : Found linux image: /boot/vmlinuz-3.16.2-031602-generic Found initrd image: ...
0
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1answer
27 views

What does perf interupt mean?

I am working on my computer, trying to write some device code. I checked into dmesg to get some info, and saw this: perf interrupt took too long (2507 > 2500), lowering ...
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2answers
47 views

How to change kernel at boot [duplicate]

I installed the latest kernel (4.1) and want to boot into it instead of 3.9. How can i do this on ubuntu 15.04?
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0answers
39 views

wifi causing kernel panics

I've been having issues with my latest Ubuntu 15.04 installation. Whenever the wifi changes on it's own, or I change it through the drop-down selection, my kernel panics -- my computer is ...
0
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1answer
77 views

what are linux-image-extra and linux-image-generic? [duplicate]

Every time I use sudo apt-get upgrade, I get errors with the linux-image-extra and linux-image-generic. I am new to Ubuntu so I would like to know if these "image" files are the same as in Windows? ...
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2answers
185 views

How to upgrade to the latest kernel [duplicate]

I'm looking at the official repo, https://github.com/torvalds/linux - how would I replace the ubuntu 15.04 kernel (3.x) with the latest, 4.x one? My current system has the x86_64 architecture.
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1answer
12 views

What is an lkm?

I wish to know few things which makes Linux different from other Operating systems, i.e., about the Loadable Kernel Modules. Brief intro on how LKMs works? In which language a new module is written? ...
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0answers
35 views

Virtualization limits for Ubuntu Server 14.04 LTS with KVM

Essentially I'm after something like this, but for Ubuntu Server 14.04 LTS. I'm trying to create some KVM guests with very large 1TB+ RAM (through OpenStack Nova). I can boot the 1TB VM fine, but I ...
0
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1answer
43 views

LVS-NAT doesn't work with passive FTP. Active FTP is fine

On Ubuntu 14, I'm trying to set up a load balancer that uses haproxy for web connections and LVS-NAT for FTP, controlled by ldirectord, with pacemaker for automatic failover to a redundant host. The ...
0
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1answer
52 views

How can I resolve BUILD_EXCLUSIVE error in upgrade to 3.19.7 Kernel?

I ran the following commands to upgrade from 3.19.0 to 3.19.7: $ cd /tmp $ wget ...
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0answers
56 views

14.04.2, 15.04 Boot Problems

I have been attempting to install 14.04.2 on a machine that previously ran 14.04 without issues. I can go through installation, install/remove a few packages (removed all non-essential software, ...
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0answers
28 views

Not able to install ubuntu-14.10-desktop-amd64

![http://i.stack.imgur.com/LlpZk.jpg] I have been trying to install Ubuntu on my PC which has a Intel 3rd gen i5 3570K and Asrock b75M motherboard. No dedicated GPU.But whenever i try to boot from a ...
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1answer
42 views

I broke my Ubuntu 14.04 [closed]

For a college Security project, I had to write a rootkit module from my Ubuntu 14.04. The rootkit was not supposed to harm the kernel, just hide processes and ports. However after running the module ...
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0answers
20 views

Compile kernel gets no error but version doesn't change

So I'm trying to compile a linux kernel in Ubuntu 14.04 to change the linux version from 3.16 to 3.14.4 and also to change one thing in config. I followed this tutorial step by step. Exept Step 6 ...
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0answers
50 views

Remove upstart option from GRUB

For each Kernel I use with my 15.04 install I have three options in GRUB: normal (systemd) upstart recovery How can I remove the upstart option for all my Kernels?
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2answers
339 views

How does 'apt' decide how many old kernels to keep?

I'm managing a couple of servers for core services (NTP, DNS, etc) and it just occured to me that one of the servers seems to keep the 3 latest kernels, instead of 2 on the others : nul@quark:~$ sudo ...
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0answers
66 views

Bluetooth with Kernel 3.18 on Ubuntu 14.04

I'm running the kernel me@me:~$ uname -r 3.18.0-031800-generic because I need support for MST. Since I've installed this, I cannot connect with my bluetooth headset(or mobile phone). For a short ...
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1answer
102 views

Recipe for target 'vmlinux' failed?

I'm attempting to build a kernel for QEMU to emulate a raspberry pi: http://xecdesign.com/compiling-a-kernel/ https://www.raspberrypi.org/documentation/linux/kernel/building.md However, running the ...
1
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1answer
27 views

Trying to access debian/scripts and debian/rules

I am trying to rebuild the kernel because I want to change jiffies to 1ms. I'm following a turorial and it is stated that I shall do chmod a+x debian/scripts/* but I can not find the debian folder ...
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0answers
36 views

How to “tell” Software updater, I have moved to a new kernel

I am running ubuntu 14.04 (updated from 12.04 which was preinstalled prior to the release of 14.04.02). I am an experienced non-technical desktop gnu/linux user, but relatively new to ubuntu. I ...
2
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0answers
66 views

rtl8192eu driver does not work

since the kernel upgrade to 4.0.1, because I had a version 3.1x, when you update the driver rtl8192eu not work for me, I get the following error make [1]: [_module_ / home / kevin / Desktop / ...
1
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1answer
37 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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0answers
94 views

>>>WARNING<<< Wrong ufstype may corrupt your filesystem

I was just now looking through /var/log/syslog and I found these line which worried me: ufs: You didn't specify the type of your ufs filesystem May 5 09:06:09 Bath-Towel kernel: [ 425.626221] May ...
0
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1answer
42 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 ...
0
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0answers
23 views

What is the Goldfish Kernel?

I was snooping around the list of linux-* packages earlier and noticed that there are linux-{,image-,headers-}goldfish packages. Package description (below) didn't do me much good and Googling has ...
3
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1answer
134 views

How do I find the current stable kernel (HWE) for 14.04.2?

This question is related to this one also. So I want to understand how do I find the last stable kernel for Ubuntu 14.04.2? Because with point release 2 it still confuses me. This is my current ...
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2answers
193 views

Black screen after grub menu since 3.16.0-36 kernel update

After updating Ubuntu 14.04.2 LTS (64 bit) from kernel version 3.16.0-34 to 3.16.0-36, when I boot the system I can see the grub menu correctly, but if I choose the 3.16.0-36 kernel a black screen ...
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1answer
69 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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0answers
27 views

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: ...
0
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1answer
69 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
30 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
21 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 ...