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kernel

  1. L

    Changing the kernel

    I have a university assignment where I'm supposed to propose and implement a patch to the kernel. It could be something related to the scheduling algorithm or the file system, for instance. We don't have to necessarily improve the OS's performance, but the changes must do something that can be...
  2. K

    Finding all the kernel source files used when compiling against a certain config file

    I am having some issues with finding all the kernel source files used when compiling against a certain config file? I do not want the full kernel source tree, just the one that went into building the kernel against a certain config setting, like make defconfig or make allnoconfig, etc... Am I...
  3. S

    Unknown kernel command line parameters "BOOT_IMAGE=/vmlinuz-5.18.11-1.el7.elrepo.x86_64", will be passed to user space

    Hi, On centos 7 after upgrading the kernel to version 5.18.11 I observed the below message in /var/log/messages kernel: Kernel command line: BOOT_IMAGE=/vmlinuz-5.18.11-1.el7.elrepo.x86_64 root=/dev/mapper/cl-root ro biosdevname=0 net.ifnames=0 crashkernel=auto rd.lvm.lv=cl/root...
  4. P

    How i've used a recent vulnerability in linux to gain root access and troubleshoot a fedora desktop machine

    Recently i was attempting to downgrade from fedora 36-rawhide to fedora 35-stable, and during this process i've lost the sudo command, and didn't have a pre-existing root account, so i've later on tried to access rescue mode by editing the bootloader options, but as i didn't have root account...
  5. K

    There are a question about the kernel

    Hi, I just started Linux. And I'm sorry for my English. Please help me solve this problem. Can't I use the Ubuntu 18.04 to 5.13.X version of the kernel? I have keyboard and Wi-Fi issue. And in other to solve it, I think it is necessary to install a kernel version of 5.13.X or higher. I...
  6. T

    How to change task scheduler?

    I want to compare the performance of the EAS scheduler with other schedulers like CFS, DEADLINE, etc. As far as I understood from the documentation, there are several schedulers in the kernel, and at a certain point in time, one scheduler can be selected by the kernel, which is responsible for...
  7. R

    My disks are not showing

    Instead of compiling everything, I used apt download and dpg-deb to setup a initramfs. :p But for some reasons i cant find my hard disk in /dev. Also blkid or proc/partition is empty. This happends when i use kernel from apt. Also I dont see any changes to dmesg when i plugin my usb mouse. Now...
  8. M

    do you want xorg in kernel ??

    Polish president of debian wants xorg in kernel . Couse its secure our system and secure xorg . Xorg is a 40 years of work . My name is Milczarski Von and i am a manager of X.org foundation . We want xorg in kernel couse its possibly to tweak a system with that . Wayland is a danger for linux ...
  9. V

    Custom kernel on fedora

    Will I receive fedora kernel updates for my custom kernel. I want to use binder... so thought of compiling the kernel from source enabling binder option... If then, will I be receiving kernel updates from fedora for my custom config (updates except for binder)... Or can i install binder as an...
  10. A

    How to repair kernel version

    I install Ubuntu 20.10 in cloud provider and receive # uname -r 4.15.0-60-generic # ls -ls /boot total 147484 248 -rw-r--r-- 1 root root 248258 Jan 18 17:01 config-5.8.0-41-generic 248 -rw-r--r-- 1 root root 248258 Feb 5 03:41 config-5.8.0-43-generic 4 drwxr-xr-x 4 root root...
  11. R

    Android Kernel Debugging (kmsg log)

    Hello, So I've been subject to some rather advanced hacking. Long story short, through means of brute force TTY and shell/root manipulation, the hackers have used ADB (android debugging bridge) and trace/printk to debug my kernel and place kernel hooks. (They've done the same to my...
  12. M

    What is using (kernel) memory?

    Hi guys, We are seeing an increase in memory usage in some of our servers, but this memory seems to be unaccounted by any tool. I am trying to figure out where this memory is being used. We are currently running an AWS EC2 instance with the following specs: t3.medium instance with 4GB RAM and...
  13. P

    Need help about recompiling linux kernel

    Hi Everyone, i need help about recompiling kali linux kernel on a Raspberry pi 4. The version of my kernel is: 4.19.118-Re4son-v8l+ First i downloaded from https://www.kernel.org/, i chose the version: 4.19.155 After the download, i created a folder called kernel and i run: tar -xaf...
  14. J

    Can I update my Kernel so it supports my hardware?

    I would like to use Pop_OS on my laptop, but because my machine is quite new the current kernel version doesn't support certain features on it. I had PopOS installed for a few hours and things like changing brightness levels of my screen wouldn't work, I had pretty bad screen tearing and audio...
  15. R

    Files missing in /lib/firmware/amdgpu/ [SOLVED]

    Hello everyone, I bought a new laptop this week and I have problems with the integrated GPU. This is an HP EliteBook 845 G7 with an AMD Ryzen 7 Pro 4750U. I first install Ubuntu 20.04 and upgrade the kernel to 5.8, then 5.8.11 and now I'm on the 5.9.0 rc6. In both 5.8.11 and 5.9.0 rc6 there is...
  16. L

    Audio broken on Asus Fx505 GE - Maybe a kernel bug...

    I have been trying to get my audio working on Asus fx 505GE. My goto distro was ManjaroKDE but I noticed that my on board sound didn't work (It was showing as dummy output in pulseaudio). I searched for a while but nothing worked. I tried alsamixer with no success. I even switched to different...
  17. S

    Tp Link wn781nd not working in linux

    I bought a tp link wn781nd ver:3.20 WiFi card to give an upgrade to my old desktop computer. I use kubuntu in this computer but the WiFi doesn't work. When I boot up the computer the WiFi scans appears but disappears after few seconds and never comes back and I am not able to connect to the WiFi...
  18. A

    How to remove kernel 3 and add kernel 5 in centos 7

    I'm using Centos 7 and Desktop Version. I executed this command in terminal: >> uname -r 5.6.13-1.el7.elrepo.x86_64 so I'm using kernel version 5 but when i executed this command: >> rpm -q kernel kernel-3.10.0-1062.18.1.el7.x86_64 kernel-3.10.0-1127.10.1.el7.x86_64 kernel 5 doesn't exist...
  19. P

    Bash: Determining if CANbus Bitrate is Configured Properly

    I'm working on an embedded Linux (4.1.15) bash script wherein the bitrate of a CANbus may be one of several possibilities. When my module comes online it comes up at the first bitrate in the list, checks for traffic, and, if no traffic, cycles through each bitrate in like manner until traffic is...
  20. M

    drivers: video: logo: Select boot logo on runtime

    Hi, I'd like to know one if my approach towards the following problem statement is correct or wrong, Developer should be able to select a logo on runtime using kernel command line argument or something similar. As far as I see from the drivers/video/logo section, we need to implement some...
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