for questions concerning Ubuntu's kernel, including compiling and questions relating to modules

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1answer
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Browse Ubuntu source code directory

I have Installed Ubuntu 12.04 On Virtual Box. How to browse the source code directory? What is the commands on terminal to do this?
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1answer
11 views

Problem loading ubuntu

I bought a used laptop with the hard drive wiped clean. Tried to load 14.04 got a message that kernel has to be loaded first. Reloaded xp and tried again, same thing?
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1answer
9 views

Edubuntu inappropriate Kernel for installation

I faced this error while Runnign Edubuntu from Virtual Box. I used this edubuntu-13.04-dvd-i386.iso file.
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1answer
22 views

How do I remove old kernel files from /boot and fix a potential error listed in <sudo dpkg --list 'linux-image*'>?

Any help with the following would be very much appreciated: A few days ago I installed the latest stable Linux kernel (3.16.3) and then I used the one liner from here to remove my old kernels. The ...
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17 views

How to convert .iso file to .img file ? [duplicate]

I am making a simple kernel and to try it on bochs emulator , I need to convert the iso of the kernel to img file. I think, it can be done using the dd utility, but I don't know how to do it using the ...
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8 views

Hang in 14.04 when mounting NTFS Drobo via Firewire

I was trying today to upgrade my file/media server to 14.04, which has a Drobo attached via Firewire (lspci identifies the controller as TI TSB82AA2). The new kernel sees the controller and Drobo ...
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1answer
11 views

Kernel Panic, Can I get specific info from this screenshot I have?

here are the specs for my desktop: Linux Ubuntu 14.04.1 LTS & Windows 7 HP pavilion p6000, AMD64 Here´s the problem details: Kernel panic error (Ubuntu) and Blue Screen of Death (Windows) ...
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8 views

LIS 3.5 under Ubuntu 12.04 LTS

Unfortunately I needed to run an Ubuntu Server 12.04 LTS under a Hyper-V from MS. After install, I pass through big problems with network and i/o performance. The Hyper-V recommend to update the LIS ...
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36 views

How to install VirtualBox in Ubuntu 12.04 LTS: “No suitable module for running kernel found”

I have a fresh 12.04 LTS installation. I have installed linux-headers-generic as well as build-essential. When I install virtualbox, I get the following error: Building initial module for ...
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14 views

kernel make zImage error - No rule to make target vmlinux

I've been searching for a couple of days and I can't find anything on google about an interesting error I get when compiling a linux kernel. I initially thought this problem had something to do with ...
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8 views

creating a copy of a process in linux kernel

I'm trying to create a copy of a task_struct in the same kernel where the copy's original task_struct is. The copy should have a different PID and the state should be same as the original ...
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1answer
31 views

Why do most of my drivers not load after updating kernel to 3.13.0-36?

I recently upgraded my system with a new motherboard, and reinstalled Trusty to have an AMD64 system (old motherboard was 32-bit). Reinstallation (side-by-side), with 14.04.01 LTS went fine and new ...
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12 views

How to cause a test crash with kdump?

After installing linux-crashdump and kdump-tools according to https://wiki.ubuntu.com/Kernel/CrashdumpRecipe and configuring the latter so that cat /sys/kernel/kexec_crash_loaded prints 1, I'm having ...
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0answers
26 views

Screen flicker Ubuntu LTS 14.04 since kernel 3.13.0-35 [on hold]

Toshiba laptop A215-S4757 substantial and erratic flickering. I doubt it's very good for the display power supply, let alone epileptics. So far, the only suggested cure that works is locking in GRUB ...
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2answers
36 views

Kernel module needs to be reloaded after boot

I just got my ALPS Touchpad on my Lenovo Flex 2 working (xinput returned "PS/2 Generic Mouse", now it returns two devices: "ALPS PS/2 Device" and "ALPS PS/2 Device") But after rebooting my system it ...
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0answers
16 views

No internet connection after compiling and installing realtime kernel on ubuntu studio 12.04.5. [on hold]

I have compiled linux kernel 3.2 realtime and installed it on ubuntu studio. Everything seems to work (even proprietary fglrx driver) but i do not have internet access. How can i solve this?
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13 views

Xenomai: /dev/rtheap is missing

I want to use `xenomai . I try to install on my pc. I read this page and did these steps: http://www.stanley.gatech.edu/skelly/uncategorized/installing-xenomai-on-ubuntu-12-04/#comment-3379 But I ...
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1answer
11 views

How to know where in /dev/ is a USB keyboard loaded?

To be precise, when you plug in a USB storage device, it is loaded in sd something, but where is a usb keyboard loaded in /dev/?
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1answer
40 views

newest kernel not loading

I got problem (maybe after automatic update - not sure) with loading ubuntu (14.04 lts) - it is now showing weird graphic during booting - something like this LINK and then black screen insted of ...
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32 views

Removed the wrong kernel

I was updating my Kernel today (or at least trying to) from (I think) 3.13 to 3.17-rc6 and while I was doing it I installed the low-latency kernels by mistake. I then removed some unwanted kernels (I ...
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1answer
37 views

How to reinstall kernels after accidental deletion with a separate boot partition and an encrypted LVM volume?

My installation is a Ubuntu 12.04 64 bits (Classic "legacy" MBR - No EFI/UEFI here) with two partition : A separate boot partition An encrypted LUKS volume that contains the system Logical Volumes ...
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47 views

DVB adapter under kernel 3.13.0-35 and above

I have a Ubuntu 14.04.1 server with a MythTV backend server and a Digital Devices DVB adapter. The server has been working fine, but if I upgrade the kernel from 3.13.0-34 to 3.13.0-35/3.13.0-36 my ...
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21 views

VMWare 8 will not work after upgrade to 14.04

When I try to execute VMWare i receive the message: -VMware Kernel Module Updater --Before you can run VMware, several modules must be compuled and loaded into the running kernel. ---Kernel Headers ...
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1answer
46 views

Black screen and call stack trace showing after kernel update

I ran an update today which included kernel updates. I left the screen for a while and when I came back all I see now is a black screen with white text containing call stack trace information ...
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10 views

Unable to find my desktop after I boot with a lower kernel

Where is my desktop? My os is Ubuntu12.04.3 3.8.0-29-generic. I reboot the kernel with 3.2.0-23-generic.By sudo gedit /etc/default/grub change GRUB_DEFAULT=saved GRUB_TIMEOUT=2 ...
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27 views

Unable to install GCDemu in Trusty Tahr

After trying to install gcdemu from ppa I always get this error and im unable to install it I get this error (synaptic:6595): GLib-CRITICAL **: g_child_watch_add_full: assertion 'pid > 0' failed ...
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91 views

ubuntu doesn't boot with initrd.img-3.13.0-35-generic and initrd.img-3.13.0-36-generic

I'm not able to boot with initrd.img-3.13.0-35-generic and initrd.img-3.13.0-35-generic - just drops into a busybox shell with the regular generic message. I though that was something kernel related ...
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0answers
18 views

How to build kernel with different flags?

Following the instructions here (https://wiki.ubuntu.com/KernelTeam/GitKernelBuild) I built a development version of the kernel. I copied the old config, called make oldconfig and then modified ...
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30 views

Gave up waiting for root device-edited grub and even tried reinstall

After I upgraded the Ubuntu kernel from 3.8.0-29 generic to 3.16.2 i tried to reboot and got dropped to the busy box shell with an initramfs prompt exactly like this Gave up waiting for root device. ...
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27 views

How to recompile kernel in Ubuntu 14.04?

I wanted to recompile the kernel in my present working directory. I used the below command tar xjf /usr/src/linux-source-3.13.0.tar.bz2 as my current version is 3.13.0-32-generic, to unpack and ...
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1answer
41 views

Error while installing kernel from source

I get the following error when I try to compile kernel version 3.17.0-rc5: Error! Bad return status for module build on kernel: 3.17.0-rc5+ (x86_64) Why do I get this error and what does it mean? ...
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34 views

Ubuntu 14.04 Kernal Panic - kernel bug at /build/buildd/linux-3.13/kernel/timer.c:930!

This seems to happen intermittently, I can't seem to reproduce the it. It happens at least once a day for the last week or so. Quite frustrating! Screenshot I am unable to get a command line to take ...
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33 views

computer does not start

I'm using ubuntu 14.04.1 LTS and everything works fine from the day I installed it. Now when I am trying to start my computer, the screen is continuously stuck with so many messages like this: ...
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2answers
29 views

“'version' has bad syntax” error when attemping update-initramfs with -k version

I want to run the following command : sudo update-initramfs -u -k version , but i get the following error message update-initramfs: Generating /boot/initrd.img-version dpkg: warning: version ...
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9 views

When building kernel dbg package with ubuntu kernel repo, got this error “Can't read private key”

When building kernel dbg package with ubuntu kernel repo, got this error: make[1]: Leaving directory `/git/nsx-thirdparty/linux-3.14.17' # Add .gnu_debuglink sections to each stripped .ko # pointing ...
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1answer
39 views

Unable to install any ubuntu version on my old computer

I have Intel core2duo processor on a Intel G31PR motherboard, 1GB RAM a brand new WD 1 TeraByte hard disk. I am trying to install Ubuntu on my hard drive. But unfortunately, I am getting errors and ...
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1answer
144 views

How to install 'cdfs' kernel module?

I am unable copy files from 'mpegav' within video CDs in my Ubuntu 14.04. After a extended search now I understand I need to mount the cd using 'cdfs': sudo mount -t cdfs -o ro /dev/sr0 ...
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1answer
16 views

kernel / initd boot settings

I have 2 seperate harddrives in my pc, one with windows 7 (working) and one with ubuntu. I am unable to boot into ubuntu for some reason :/ I installed easyBCD to correct the windows bootmenu and used ...
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23 views

Some USB ports aren't enabled

I am using Ubuntu 14.04. My computer has an AMD FX-8350 Vishera 4.0 GHz Octal-Core AM3+ processor. My computer has 8 USB ports, but only two of them are active. The processor in the boot enables all ...
0
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1answer
32 views

Ubuntu Server compiling kernel modules

I am trying to compile paragon ntfs driver http://www.paragon-software.com/home/ntfs-linux-per/screenshots.html and got “no symbol version for module_layout" error when modprobe loading modules. ...
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2answers
55 views

Unable to download the source code of linux that I am running

On my machine: root@zaidi:/home/uzair# uname -r 3.13.0-35-generic Also: root@zaidi:/usr/src# ls linux-headers-3.11.0-15 linux-headers-3.11.0-23-generic linux-headers-3.11.0-15-generic ...
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0answers
27 views

Reporting a subtle bug in Ubuntu 14.04 kernel

Note: I have filed this bug on Launchpad and can be seen at https://bugs.launchpad.net/ubuntu/+bug/1369374. I am reporting it here as well hoping to find a workaround. I have reasonably good ...
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0answers
24 views

1.5GB RAM with Pentium 4 for Ubuntu 14.04 LTS [duplicate]

I have an old desktop with 1.5GB RAM and Pentium 4? Would Ubuntu 14.04 work fine or i need to downgrade to xubuntu or lubuntu? It would be fine per the hardware requirements specs for 14.04 but was ...
1
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1answer
86 views

Acer Aspire wifi on Broadcom b43 not working [duplicate]

ck, including userspace. [ 79.694480] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 79.694486] [drm] drm/i915 developers can then reassign to the right ...
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0answers
30 views

kernel 3.16 update with BF Scheduler

I use an old asus eee pc, and try to boost it up. Actually I use the mainline-kernel 3.16 and found out there is a bfs-patch from http://users.on.net/~ckolivas/kernel/ I want to try BFS instead of ...
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89 views

Serial Port not Working on 14.04 LTS Desktop

System Spec : Ubuntu 14.04 LTS Desktop x64 on Dell Optiplex 3020. I am interfacing a VoIP card (TI Manufactured) which can be connected to PC by using serial port(RS 232). Can't Provide More Info on ...
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2answers
65 views

Upgrade Ubuntu LTS to a Version that supports MacBook retina

I have Ubuntu LTS 14.04 with Gnome 3 as GUI installed on my MacBook ( it's a persent ) and some things don not work very well. Like Chromium is eye hurting small and my thunderbold interfaces do not ...
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2answers
83 views

List all kernel settings to get details about installed devices

How can I find out with which settings my kernel was compiled? I would like to understand the concept behind this. I wonder how I can find out which device uses which module. For example: right now, ...
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9 views

Error: you need to load the kernel first [duplicate]

Please help me. I accidentally deleted my grub partition when trying to reinstall Ubuntu 14.10. I have a bootable USB and working windows 8.1 on my computer. I'm stuck in a command line version of ...
0
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1answer
26 views

How to unload a kernel module which is in use?

I'm following this tutorial to get my card reader working: http://ubuntuforums.org/showthread.php?t=636867 However I'm unable unload my sdhci module: sudo modprobe -rv sdhci mmc_core mmc_block ...