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Questions tagged [linux-kernel]

This tag is for questions about the internals of the Linux kernel itself - particularly about use or configuration of kernel modules or drivers.

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Bluetooth Dongle not working

I buy a new LogiLink BT0015 USB Bluetooth dongle and want to install it on my Debian 9 system. After the installation process (bluetooth, bluez, blueman package), the dongle not working and the device ...
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0answers
15 views

Converting Linux driver for SPI device to run on USB-to-SPI bridge

I have a Holt HI-3110 chip that implements a CAN bus interface that is run over an SPI host interface. A driver for the chip is in the Linux mainline (in /drivers/net/can/spi). I'm targeting a host ...
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0answers
110 views

update-initramfs -u fails after installing new kernel

I compiled and installed a new kernel, 4.19.10 following this guide. https://www.cyberciti.biz/tips/compiling-linux-kernel-26.html I had done the same in the past without any issues but this time ...
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1answer
42 views

How to choose optimized Linux-ck kernel?

I have a question that are all 14nm intel cpu use the same micro architecture? E.g (sky lake, kaby lake, coffee lake, whisky lake). PS: Linux-ck repo only have sky lake version , which is the first ...
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0answers
108 views

Understanding OOM killer reason on openwrt system

This is a busybox/openwrt system. OOM-killer are intermittently killing processes. Sometimes collectd, sometimes snmpd and as in example below uhttpd. I could aproximately free up 37% by not ...
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1answer
77 views

How to isolate a drive?

Question At Linux boot, is there an option I can add to the “vmlinuz…” line that will prevent the OS from ever (at least in that session) being able to see or access NVMe SSDs - while keeping all ...
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1answer
25 views

Understanding Minstrel's rc_stats file in Linux (WiFi bitrate adaptation algorithm)

Problem: The statistics used by minstrel_ht - Linux's typical WiFi bitrate adaptation algorithm - are published in the file /sys/kernel/debug/ieee80211/phy*/*/stations/*/rc_stats. This file has a ...
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1answer
35 views

Installing new version of linux on vary old

I have a compact version of linux, build from ubuntu V10 and kernel v3.13. Now because of hardware changes, i need to replace it by newest kernel. When I try to update in directly, after downloading ...
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1answer
31 views

Replacing linux kernel from outside of system

There is a certain ubuntu image that works (from the SD card) with a hardware controller. The whole image takes 2 gigabytes, for such is the card size. The image is built on the old kernel. We need to ...
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49 views

Can QEMU boot Linux from vmlinux instead of bzImage?

I've been using QEMU 3.0.0 happily with -kernel bzImage from Linux v4.19. However, now I have another simulator (gem5) that boots from vmlinux, it would be convenient if I could boot both from the ...
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1answer
40 views

Are newer `btrfs-progs` versions safe to use with older kernels?

For example btrfs-progs-4.17 on kernel 4.14 - any issues, or can just upgrade btrfs-progs with no "back-compatibility" concerns?
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Installing Virtual Box on Solus: Linux kernel header files

I have a problem with installing the VirtualBox on Linux Solus. When I try to start it it gives me this error-message: This system is currently not set up to build kernel modules. Please install the ...
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1answer
43 views

i2cdetect -l don't return anything

I need to use the SMBus, but when I run the command i2cdetect -l I do not receive anything as output, on Windows it was recognized, I do not see anything about SMBus even doing lspci. I installed and ...
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0answers
13 views

Installation of particular kernel version

I am certainly new to this, however, I am working on a project and that needs a particular version of Kernel. I am not sure how to get it. I am planning to spin up a VM for that version, however, not ...
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18 views

Is there any keycode available to perform Field Exit in VT220 , VT320 Terminal?

Basically i need to move cursor from one input field to another field without hitting enter. How should i do it in the terminal ? For example i found keys like : TabKey[0] = "\u0009"; TabKey[1] = "\...

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