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

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In sysctl.conf settings, what is the difference between 'all' & 'default'?

In context of sysctl.conf settings, what is the difference between (all vs. default) like net.ipv4.conf.all.accept_source_route & net.ipv4.conf.default.accept_source_route in sysctl settings ? ...
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39 views

How to good and easy add all kernel required modules to /lib/modules/$(uname -r) in Ubuntu Core deployment?

I would like to deploy "Ubuntu Core" (13.10) following the deployment instructions of "Ubuntu Core". This suggests - after installing linux - to add the kernel required modules to /lib/modules/$(uname ...
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0answers
239 views

How to repair deleted modules?

During a disk analyzer session to clean up space, I saw that /lib was taking up a ton of space, and I have never before seen this taking up this much space before in Disk Analyzer. The thing is, I ...
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2answers
161 views

How to find all dependent (dependency walker) packages before installing a .deb file? [duplicate]

When installing Ubuntu Core 13.10 according to the instructions at wiki.ubuntu.com/Core/InstallationExample, step 5 says that Ubuntu 12.04 "Precise Pangolin" development kernel requires the ...
0
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1answer
90 views

Do modifications to sysctl.conf take effect in openVZ container?

I'm following a security guide(http://www.thefanclub.co.za/how-to/how-secure-ubuntu-1204-lts-server-part-1-basics) to strengthen my OpenVZ based VPS webserver running Ubuntu 12.04 , a part of that ...
0
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1answer
40 views

What is kernel modding? [closed]

I want to take a dip in customizing linux kernel. As it's evident that linux kernel can be modified according to our specific needs. My questions are: What is kernel modding? How to perform that? ...
1
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1answer
241 views

How to install 3rd party module so that it is loaded on boot?

I have a third party module to go with a frame grabber. I've downloaded the kernel source, followed the vendor's instructions to compile it, and have the resulting module, arvdrv.ko, sitting in a ...
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2answers
66 views

How to use my 6GB of free ram to optimize ubuntu12.04?

I also want to load faster on boot. If possible, can I shift all temp file hard disk operation to RAM?
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0answers
18 views

How to create a Kconfig file

So i have a hello world module and a Makefile for it. I want the module to be shown in the make menuconfig window! How do i do that? By creating a new Kconfig file or something? If so, how to create a ...
1
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1answer
32 views

Can't “compile” the makefile

This is the make file: obj-m += hello_pass_arg.o KDIR = /lib/modules/$(shell uname -r)/build all: $(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules clean: rm -rf *.o *.ko *.mod.* *.symvers ...
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3answers
9k views

For a 32-bit kernel, what are the pros/cons of PAE vs. non-PAE?

I am using Ubuntu 12.04 32-bit. My kernels are PAE kernels. I know these are the kernels we can use for 32-bit OS which have 4 GB RAM, to utilize all 4GB of RAM. My system is a 32-bit system. So I ...
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2answers
172 views

Makedepend: Command not found

I'm trying to compile a source code and I'm getting this error make[1]: makedepend: Command not found Do you have any suggestions? I have Ubuntu 12 04 LTS, 2.6.28-17 kernel and gcc version 4.6.3
3
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1answer
3k views

Ubuntu freezes frequently giving error : GEN6_RP_INTERRUPT_LIMITS

My computer freezes allmost every day. Sometimes just Compiz crashes when I try to open Unity menu. Very often screen just freezes completely and doesn't respond anything. Then I have to restart X. ...
1
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1answer
53 views

What is the minimal amount of RAM to built an 3.11.0 x86_64 kernel on 13.10 with 8 cores? [closed]

I have configured a KVM virtual machine (VM) with 8 processor cores and 256 MB of RAM and no swap. A minimal text based Ubuntu Saucy 13.10 amd64 was done. The essential packages to build/recompile the ...
3
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1answer
59 views

Is number of compiled modules affecting size of kernel in RAM?

When I am compiling a kernel myself, the amount of drivers and modules I compile is definitely affecting the size of produced binary. Does compiling the kernel also affect the size of kernel when it ...
7
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2answers
5k views

How do I find the boot parameters used by the running kernel?

Is there a way to find out with what parameters did the kernel boot? For example if I specify noexec=off at the grub command line? Can I see this sort of info after the system has finished booting?
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0answers
15 views

Is there instruction counter at kernel level

Is there any kernel data structure / counter which stores the number of instructions executed after OS boot up till now ?
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1answer
65 views

Will a kernel update overwrite my wireless driver from a newer kernel?

i run ubuntu Release 12.04 (precise) 64-bit Kernel Linux 3.2.0-59-generic but I installed the wireless driver from backports-3.13-rc2-1. Now all works well. My question is about the kernel update ...
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0answers
21 views

Letting system updates know that I already have a newer kernel

I am running Elementary OS (basically Ubuntu 12.04). I had to upgrade my kernel to 3.13. I did this using dpkg. However, system updates still shows kernel 3.2 as available. Is this because apt does ...
0
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0answers
160 views

Grub-Customizer not saving the changes after kernel upgrades

I'm running into an annoying problem with Grub-Customizer (4.0.4) every time I update the kernel versions. After the kernel update I normally open Grub-Customizer to accommodate the new kernel ...
4
votes
1answer
31 views

Kernel.org kernel config options different from Ubuntu ones

After compiling Ubuntu kernels for a few days (quite a fun experience, I must say), I decided to finally plunge into some vanilla kernel goodness. So far, so good. Downloaded the most recent ...
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2answers
2k views

Which file is changed after I do “make menuconfig”?

In linux, I thought that the file Makefile is changed after I run make menuconfig. But when I diff Makefile, I don't see any difference. Which file is changed after I do make menuconfig?
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1answer
2k views

VMWare virtual machine won't boot after 12.04 upgrade

I was running an 11.10 virtual machine on VMWare Workstation 7.1.5 build-491717. I tried to upgrade the other day to 12.04. After everything was downloaded and installed, the system asked to be ...
2
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1answer
641 views

Why is linux-image-extra missing from 3.8.9 onwards?

I've been using kernels from Ubuntu kernel team PPA for some time now. I have setup a script that wget's all the four files required for my setup: all the amd64+all headers, total of 4 files. Kernel ...
2
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2answers
192 views

How to compile Linux kernel 3.8 in Ubuntu 12.10?

How to compile Linux kernel 3.8 in Ubuntu 12.10 without modifying the Vanilla i.e Ubuntu patches? How to install Vanilla kernel 3.8 and dual boot already installed Ubuntu 12.10 and Vanilla kernel?
2
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1answer
623 views

Building a new vanilla kernel - some confusion with the produced debs

So I wanted to try to build 2.6.39-4. I followed the procedure at ubuntu wiki "GitKernelBuild" page. In short, download the tar.bz2, extract, copy my old config, make oldconfig, and then fakeroot ...
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0answers
16 views

What does noirqpoll kernel option actually do?

I've recently been troubleshooting a boot issue with Ubuntu. First I tried 13.10, and when that booted wrong I am now on 14.04 development. What would happen is that my computer would crash shortly ...
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0answers
44 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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1answer
182 views

Remove/downgrade kernels of a point release

Currently building a 12.04.4 (3.11.x) LTS LAMP Server and have a 12.04.3 (3.8.x) one in production. How can I remove the 3.11 kernels and headers with the lts-raring generic packages and install ...
3
votes
1answer
144 views

Install older kernel in a server and made it the default boot option in grub

I need to install an older kernel version (3.2.0-24-generic) on an existing Ubuntu 12.04.3 (3.8.0-34-generic) LAMP server and a new install Ubuntu 12.04.4 (3.11). After the installation I will need to ...
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0answers
25 views

Ubuntu 12.10 does not boot properly

I have Ubuntu 12.10 running on HP ProBook 4430s. I have been using it more than a year. This morning I switched it on, the screen got stuck before it boots - it was black and white terminal like ...
2
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1answer
131 views

How to remove linux capabilities?

One useful attribute for protecting log files is append-only. When this attribute is set, the file cannot be deleted, and writes are only allowed to append to the end of the file. Obviously, an ...
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0answers
21 views

Changing kernel in a system not booting

I have a dell inspiron laptop and have just installed 12.04. The system hangs on boot after 'Switching to clocksource TSC'. I've searched all the questions here and had no luck changing bios ...
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0answers
53 views

Sound card is not working on Ubuntu kernel version 3.11.0-12

From the /var/log/syslog file, the kernel stack trace. Mar 8 13:03:20 rjk-Inspiron-1525 kernel: [ 1931.384971] ------------[ cut here ]------------ Mar 8 13:03:20 rjk-Inspiron-1525 kernel: [ ...
2
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1answer
44 views

What Is A kernel and how do I remove unused Kernels? [duplicate]

I have ubuntu 12.04 lts. I am new to ubuntu and i get this warning that 0 bytes are remaining on the volume /boot. i asked a question :This is the link to it So I Got replies saying i should remove ...
2
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1answer
508 views

upgrade has a problem

when I use: sudo dpkg --configure -a I get this: Setting up rsyslog (5.8.6-1ubuntu9.1) ... dpkg: error processing rsyslog (--configure): subprocess installed post-installation script returned ...
1
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1answer
2k views

How to resolve dpkg error code 1?

I'm having issues with installing these two updates: linux-generic-pae linux-image-generic-pae Getting the following errors every time I try to upgrade: Setting up ...
1
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1answer
35 views

Customising the ubuntu linux kernel

Can any one tell me how to customize the linux kernel for ubuntu package so that my kernel size can be reduced with necessary packages and the new kernel size should be very small?
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0answers
14 views

Gnome2 Network applet issue - annoying another icon appears.

I'm using Ubuntu 13.10, installed the gnome-2 mate desktop environment. One thing that annoys me the most is the network icon in the panel. Ok, so the network applet runs when the system starts. To ...
2
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2answers
1k views

“module load” command does not work

I'm trying to compile the "Global Climate Model" with the following commands: module unload pgi gcc module load gcc/4.6.3 pgi/11.8 But the terminal replies: command not found. What am I doing ...
0
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0answers
23 views

Error while installing kernel-headers?

I have a Linux kernel module which I am trying to compile. The module needs the installed kernel headers to install and is looking into /lib/modules/$uname -r/build folder which is not present. I ...
0
votes
0answers
122 views

How to install a custom Ubuntu Touch Kernel on the Nexus 10

I've just installed the latest version of Ubuntu Touch on my Nexus 10 tablet,but it does not fit my needs. Instead of it,I would like to install a minimal version of Ubuntu or Debian running with the ...
1
vote
2answers
775 views

Missing asm/types.h file

I have been trying to compile a very old program actual meant for Kernel I previously had an issue Missing Modversions.h which is solved now, but there is another issue. In file included from ...
0
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2answers
34 views

why it is needed to update the linux-images in ubuntu

I had recently updated the linux image and kernel files.i found that after doing it,my system resolution becomes like a (without display driver) fonts,icons are big big..so....when entering to that ...
0
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1answer
18 views

what if i remove .config file from the linux source

I was just curious whether i can remove the .config file. Actually i am learning how to edit the config (from make menuconfig) and recompile the kernel. So if i remove the .config file from the source ...
1
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1answer
283 views

Kernel Panic: not syncing: VFS unable

I am using Ubuntu 12.04 LTS and have been using it for a while. I just rebooted today and got this error: Kernel Panic: not syncing: VFS Unable to mount root fs on unknown_block(0,0)` Here is a ...
0
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2answers
499 views

Installing 3.13 kernel on Saucy (13.10) - possible? [duplicate]

I wanted to install 3.13.5 kernel from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13.5-trusty/ . I know that the folders are called trusty but can I install them on 13.10 ? After tying dpkg -i ...
0
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0answers
49 views

qemu kernel zImage file problem

im trying the install virtual embedded linux, i installed qemu and i installed kernel like as : $ wget https://www.kernel.org/pub/linux/kernel/v3.x/linux-3.8.2.tar.bz2 in Kernel file enter these ...
0
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1answer
21 views

Which extra packages or modules should i remove at compiling time

I'm a newbie in compiling the kernel from kernel.org sources.when i compile kernel at my machine which extra or old packages or modules should i remove? thanks in advance.
0
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2answers
66 views

System crashes with large file transfers [closed]

Running Ubuntu 12.04 on a G5 ppc with sonnet tempo sata controllers on SiI 3112 chipset, sata_sil driver Info reads from drives fine, but when I try to write to the drive (more than 2gb) the system ...