0
votes
0answers
16 views

CLEAN CACHE On X86 Desktop Boxes?

I was building 3.12.13 linux kernel and I came across the CONFIG_CLEANCACHE option. it would seems to reduce I/O considerably especially in conjunction with CONFIG_FRONTSWAP. But I want to know if ...
2
votes
0answers
41 views

String length limit for a kernel module parameter [migrated]

I am passing a string as parameter when loading a kernel module. When the string is > 1024 chars, modprobe results in an error: FATAL: Error inserting mymodule (/lib/modules..): No space left on ...
3
votes
1answer
87 views

How to build a custom kernel with localmodconfig that support hardware of multiple machines?

When configuring a server to run a single task, like an appliance, there might rise the need to build a custom kernel. For example to save disk space. Ubuntu Core 13.10 amd64 root filesystem is a ...
1
vote
0answers
84 views

Looking for a list of modules that are used during boot sequence

I'd like to use deferred init calls. This function allows to load modules in userland, that should actually be loaded during the boot sequence. Just for testing I'd like to modularize as many entries ...
2
votes
2answers
129 views

BSD Kernel Vs. Linux kernel? [closed]

I wanted to know in technical terms; what is the difference between BSD Kernel and Linux Kernel. In Linux, we can download the source kernel then patch it and make and make modules it. Even we have ...
5
votes
1answer
114 views

Linux: What is a tainted kernel?

Under certain conditions, the Linux kernel may become tainted. For example, loading a proprietary video driver into the kernel taints the kernel. This condition may be visible in system logs, kernel ...
3
votes
1answer
459 views

How to make EDID

I read the post here and I tried to make do with what I understood from the post but here are some questions: Where is the /lib/firmware located in for example /usr/src/linux/lib/firmware or ...
1
vote
0answers
36 views

Why linux is a monolithic kernel, while you can load/unload modules (e.g. drivers)? [duplicate]

Hybrid- and Microkernels are flexible, in the way one can add any higher-level functionality as a module, is it not the same for linux kernels? Why then linux is called a monolithic?
1
vote
2answers
548 views

error: “net.inet.ip.fastforwarding” is an unknown key

I've been doing some research into improving performance for OpenVPN and I found out about setting fastforwarding to 1 but when I tried I got the error error: "net.inet.ip.fastforwarding" is an ...
-1
votes
2answers
67 views

Make a new sniffer [closed]

How can use the Linux-kernel to supervise what is going on, about the new connections, new ports, connected hosts? Like I will do a new sniffer. Which files should I monitor to know what is going ...
0
votes
0answers
92 views

How to compile video4linux for ARM?

I would like to use a webcam using a Linux over ARM board. Through reading, I have discovered video4linux so I would like to compile it for ARM. My unique notes are: git clone ...
2
votes
3answers
223 views

How do I know which kernel configuration option enabled my driver?

TL;DR: when I was trying to compile a driver for USB DAQ device I have reconfigured the kernel. The driver refused to compile under the default distro's kernel but everything works with my tweaked ...
1
vote
3answers
89 views

Does a fault in a kernel module necessarily result in a system crash?

Or is it possible to overcome the fault, since the code isn't in the monolithic part of the kernel?
0
votes
0answers
60 views

Decreasing mouse sensitivity at kernel level

I have developed a custom-GUI Server, which runs on virtual console of Linux.For mouse-handling purpose, it reads the mouse device file /dev/input/mice and retrieves the event data and updates ...
1
vote
2answers
185 views

Does linux modules/drivers belong to kernal space or user space

Some articles say that modules/drivers belong to kernel space as it take part in forming the kernel; (reference: http://www.freesoftwaremagazine.com/articles/drivers_linux) While others say that ...
3
votes
4answers
2k views

How to determine which module taints the kernel?

My kernel keeps panicking when connected to a certain wireless network. I'd like to send a bug report but my kernel is apparently tainted. From /var/log/messages: Apr 17 21:28:22 Eiger kernel: ...
0
votes
0answers
582 views

Problem with keyboard backlight in Asus N56VZ. Suspected asus-wmi problem

I use Ubuntu mainline kernel 3.8.x and 3.9.RCx on Linux Mint 14. On those kernels keyboard backlight is not working very consistently. Sometimes kernel boots and keyboard brightness is available. ...
2
votes
1answer
194 views

How to run Different congestion control algorithms in FEDORA 17 ..?

Earlier versions of Fedora has different loadable kernel modules which includes diffrent congestion control algorithms etc at (/lib/modules/"kernel-name"/kernel/ipv4).These are present in the form of ...
5
votes
3answers
752 views

Disadvantages of linux kernel module?

I am trying to understand the disadvantages of using Linux kernel modules. I understand the benefits of using them: the ability to dynamically insert code into a running system without having to ...
3
votes
2answers
2k views

Adding a new System call to Linux 3.2.x with a loadable kernel module [closed]

I want to add a particular new system call in the linux kernel 3.2.x but as a loadable kernel module (as I don't want to recompile the kernel again and again) I read through many posts on internet ...
1
vote
3answers
4k views

The command to upgrade to a new kernel from Ubuntu repositories

In the distro I'm most familiar with -- ALTLinux, a command like apt-get install kernel-image-std-def#3.0.... would install another kernel, and update the initramfs and the bootloader config ...
1
vote
1answer
315 views

Binding lsmod module name with kernel configuration menu entry

Lets suppose I have a module named "mptsas". How can I find out, what kernel configuration menu entry (make menuconfig inside /usr/src/linux) corresponds to that module? By 'corresponds' I mean what ...
5
votes
1answer
302 views

Loading speedstep_centrino kernel module

Because of a noisy fan in my laptop, I need to change CPU frequency and for this task I need to load the appropriate kernel module. The CPU in my laptop Acer TravelMate 4002WLMi is: $ cat ...
2
votes
0answers
372 views

Kernel 3.0.0-1 and NVIDIA driver boot problems

I can't boot kernel 3.0.0-1 on Asus G53S running Debian, it freezes when booting with: NVRM loading NVIDIA Unix x86_64 kernel module 275.28 then it times out with: udevd[350]: timeout: killing ...