Is there a good way to extract the same information that uname does from a compressed kernel image? I want this to be able to check the dog tags of kernel sitting in dormant mtd's on an Embedded Li...

I have generated a core-image-minimal image for my Intel board in Yocto. Looking into tmp/deploy/images folder they are many images. I flashed *.wic image using dd command on USB and it created two...

I'm developing a ttyACM device with ST microcontroller, and with the same code, my host could sometimes enumerate it successfully (below) but sometimes it just dump the below message. What does err...

I'm trying to get /var/log to be persistent in my fido build. The default setting on poky is, that there is a symlink in /var which points log -> volatile/log. volatile is a mounted on a tmpfs. ...

I have a Linux process developed by a third-party that communicates with a terminal. For debugging I want to see the communication going back in forth. One might think cat would do the trick (to s...

I can see number of threads used in application by going to /proc/$(pidof task)/ and giving cat status. Is there any way to check individual thread priority in linux using commands? Regard...

I have 2 Dockerfiles on my Host Machine ( Ubuntu 20.04 ). I am running docker-ce version Docker version 19.03.12, build 48a66213fe with Experimental Features enabled. I am able to build each of the...

I have just started to understand the kernel working and internals and to begin with, I am trying to build the kernel and boot it. I am using qemu as simulator for x86 architecture. I am followin...

Does someone know why I get the following after "sudo apt-get install libboost-all-dev": Some packages could not be installed. This may mean that you have requested an impossible situation or if y...

I'm running Embedded Linux on an evaluation kit (Zoom OMAP35x Torpedo Development Kit). The board has an LCD and I would like to be able to take screen shots convert them into a gif or png. I can g...

I have just made my first driver module, the hello world module following LDD3. However unfortunately encountered this error: insmod: error inserting './hello.ko': -1 Invalid module format. I am...

Various web pages tell me that to get full truthful stack backtraces in the Linux kernel, I need to set CONFIG_FRAME_POINTER=y in my .config file. So I run make menuconfig and try to find it in the...

Summary I am currently compiling the Linux kernel (kernel, modules and DTB) with some custom drivers for a custom board. Occasionally I'll compile the kernel and realize that the compatibility str...

I have been using buildroot till now and recently switched to Yocto. In buildroot, the root file system is present in the "target" folder. What is the location of the root file system in Yocto. I k...

I am building an image with Yocto/Poky release Daisy 1.6.3. What is the correct way or config file where to set the root password? The default password is empty and I can't find a place where to sp...

I'm a EE and for a project at uni I'm developing hardware assisted image/video filtering on an FPGA (Xilinx ZYNQ), said device also has a dual core ARM A9 processor inside and more importantly ther...

There should be a standard, board and architecture independent way to do this just like there is with initfamfs, no? I'm using powerpc and linux-3.10, if it matters. If there are better facilities...

I'm making a embedded linux project and I want to do a simple debug messages library where I can disable my debug messages (using pre-compilation directives) when my code is in production phase and...

While building the kernel I am giving LOADADDR as "0x80008000": make uImage LOADADDR=0x80008000 Can you please help to understand what is the use of this? Can I change the LOADADDR, is there any...

I am going to setup build environment to make my own linux embedded system for AT91SAM9X25 Board. I am using buildroot to do this. The make command build all targets, the first it build toolchain t...

I'm trying to install scipy via pip on my 64 bit ARMV8 board. I have already installed openblas which is required by scipy. So, no issues with that. When i gave pip3 install scipy --trusted-host py...

I am using Yocto (Hardknott) to build an image and to create the package-feed(rpm packages). One of the image dependencies is u-boot-karo (it's a custom u-boot for karo modules) and it seems this r...

I am trying to modify the kernel config without luck. There is a BSP in meta-xxx-yyy/ with recipes-kernel/linux/linux_git.bb. I try to override the kernel config in my layer named meta-xxx-mylayer ...

I have an embedded linux system containing two threads that must run in real time (or soft real time). When using SCHED_OTHER, I noted a lot of jitter but the two threads always executed with...

I have a Linux kernel module that implements a character device driver. I've read through Linux Device Drivers and followed several tutorials. At this point, I have a simple module that provides op...