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2
votes
0answers
40 views

Ubuntu 14.04 inserting a custom kernel module on boot

I would like to know how to insert a custom kernel module into the kernel during boot time? Also, would also like to ask how to ensure that this kernel module is always inserted earlier than all the ...
0
votes
1answer
30 views

Kernel Modules loaded when boot

Would like to know if there is a specific list or location for the name of the kernel modules that are loaded when the system is booted. Commands like lsmod or cat /proc/kallsyms only show those that ...
1
vote
0answers
44 views

Can I replace bzImage and ko files in installed modules separately?

I'm currently trying to debug a kernel module. After installing the kernel, I'm trying to change the kernel a little and a single module a little and see how things work. When I changed the kernel ...
3
votes
3answers
778 views

Reduce Boot time

I would be interested in finding ways to reduce the boot time, specially in embedded-related environments. I've read somewhere of a method to avoid the kernel to load some drivers or modules but I'm ...
1
vote
0answers
301 views

`acpi=off` results in `BUG: unable to handle kernel NULL pointer dereference`

Background I have been getting spontaneous crashes on my newly built NixOS machine. I am trying out different configuration options to see if I can avoid them. Here is my journalctl -b -1 -p 3: Jun ...
0
votes
0answers
44 views

Start module before boot

Is there a way to start a module (framebuffer display driver, fbtft_device) before boot so that it can be used for boot-time splash screen? Its like issuing a modprobe command before boot. I want to ...
0
votes
1answer
2k views

CentOS 7 persistent module loading at boot

I need to load the drbd module on my CentOS server at boot time. I know a module can be loaded without the need of a restart using modprobe drbd but of course after a system reboot I would have to ...
0
votes
2answers
148 views

insert module during bootup

Few modules are inserted during the startup of the kernel. systemd-modules-load[367]: Inserted module 'lp'$ systemd-modules-load[367]: Inserted module 'ppdev'$ systemd-modules-load[367]: Inserted ...
9
votes
2answers
10k views

Cannot start archlinux after update: Cannot find uuid

I updated archlinux with "pacman -Syu" and then when I've restart, the system can't start. This is the report: Warning: /lib/modules/4.11.9-1-ARCH/modules.devname not found - ignoring version 232 ...
1
vote
2answers
141 views

Can initramfs programs access all memory - do they run in real or protected mode?

This is in the context of current 64-bit processors and current linux kernels (I'm using 4.6.4.) Is it possible for me to write a program that during boot can examine base memory, 640k and under, ...
0
votes
1answer
2k views

module not loaded at boot

I'm on an archlinux 4.4.1-2 and I'm trying to set up a netctl service. Problem is that for netctl to work I need to have bcma and b43 loaded. Since these two are not out-of-tree modules I thought I ...
7
votes
1answer
2k views

How to boot linux without an initramfs?

I'm looking for a way to boot an existing linux kernel without an initramfs. According to this link it should be possible simply by editing /boot/grub2/grub.cfg. But if I try this config menuentry '...
2
votes
1answer
2k views

An error during boot that I can not see

When I boot fedora, It shows an failure about modules and it disappears and then splash appears. I checked the /var/log/boot.log but there was no errors or failures there. Where can I find it?
2
votes
1answer
4k views

GRUB2 Insert additional kernel modules

GRUB2 doesn't have the menu.lst file. How do I configure a boot script. During boot, I hit E on the kernel image that I want to modify and make my modifications. But I would prefer to make the ...
6
votes
1answer
13k views

Excluding kernel modules through /etc/modprobe.d/blacklist.conf does not work

I don't want to load the kernel module nouveau on my debian box at startup, so I put the following in /etc/modprobe.d/blacklist.conf: blacklist ttm blacklist drm blacklist nouveau I even did a ...
3
votes
1answer
1k views

Can kexec be built to a standalone binary, to be used where kexec was not built into the kernel?

I have remote embedded Linux devices I am trying to update to a new kernel without having to physically access. However, the command line options they boot with make one of the MTDs read only - I ...
7
votes
2answers
5k views

How to block loading kernel module only in single user boot when blacklist fails?

On a "Linux debian 2.6.32-5-amd64 #1 SMP" installation where loading a kernel module (mpt2sas) is desired to be delayed to be loaded after starting sshd and users can remotely login, the mpt2sas ...
3
votes
0answers
1k views

How to load HID kernel module from the kernel command line?

While upgrading a server from kernel 3.2.9 to kernel 3.5 I had a problem with the network (ifconfig eth0 up won't work) so I updated the system to get a newer userspace, but in the process something ...
1
vote
1answer
904 views

Load module from the boot menu

Is there a way to insert/load a module at the boot menu in Suse? I'm referring to the menu in the screenshot below (this isn't from my machine, just a similar screenshot I took from the web). I ...
6
votes
1answer
3k views

Booting without initrd

Is it possible to boot linux without a initrd.img ? I am planning to add default drivers as a part-of-kernel itself and avoid initrd completely. What are the modules that should be made part-of-the-...
3
votes
1answer
454 views

load program/module at boot

I'm trying to load a program I wrote at boot. The program is also a module.ko and a small bash script. For the module I tried doing depmod mymodule.ko and modprobe -a and messing around with modprob ...