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

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2
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1answer
2k views

Kernel updates will not install - boot partition full

I am running 14.04 LTS. Kernel updates will not install or uninstall. The boot space (approx 240Mb) is now full and using sudo apt-get autoremove, autoclean, clean or remove will not work. This all ...
1
vote
0answers
115 views

Kernel reports wlan0 “connection lost” frequently [duplicate]

I'm getting this message frequently: wlan0: Connection to AP f8:d1:11:44:01:06 lost This happens only on my work, not my house. I workaround this with sudo service network-manager restart or ...
0
votes
1answer
74 views

Ubuntu Touch AppArmor Kernel Patches

new to Ubuntu development: I am porting Ubuntu touch to my own device. There are many different commits related to AppArmor on ...
0
votes
1answer
70 views

Ubuntu Touch Kernel Config [easy question]

I'm in the process of porting Ubuntu touch. Based on the porting guide, https://developer.ubuntu.com/en/start/ubuntu-for-devices/porting-new-device/#anchor4 I would like to know which kernel is it ...
0
votes
1answer
63 views

How to reinstall the kernel with a crippled OS?

I use Ubuntu 14.10 and as it happens quite often my /boot partition got full. Usually in this case I use apt-get to manually remove one or a few old kernels and everything is fine again for a few ...
7
votes
4answers
9k views

VMWare Player 7.1.0 on Ubuntu 15.04 (kernel: 3.19.0-10-generic) app loading

I downloaded the latest version of the VMWare player (v 7.1.0) from here. Installed the bundle, and the installation went through fine. Post-installation, when I tried to launch VMWare Player, but ...
0
votes
1answer
102 views

grub and libfuse error

After I updated packages: gnupg gpgv libgcrypt11 libtiff5 (on Ubuntu 14.04.2 LTS Linux version 3.13.0-48-generic) and then did an apt-get autoremove which removed: linux-headers-3.13.0-46 ...
0
votes
0answers
123 views

Unable to upgrade kernel on Ubuntu 14.10

I'm trying to upgrade my kernel from the current one (3.13.0-36-generic) to 3.18.5, but my system doesn't get updated after rebooting. I have tried with other kernel versions, but none seems to work ...
4
votes
1answer
289 views

dkms Installed kernel module but not working after reboot

I bought a keyboard that is shown on lsusb: Bus 002 Device 009: ID 0c45:7603 Microdia but the Ctrl, Windows/Super and Alt buttons are all mapped to Shift button. So I followed the hardware code and ...
0
votes
0answers
89 views

Ubuntu Server 14.04.2 LTS restarts continuously

is my first time asking here, so, congrats for the forum, is very instructive! I have an Ubuntu Server 14.04.2 LTS (64bits), and when Im working with that, I don't know exactly why, it restart again ...
0
votes
2answers
2k views

Nvidia Driver Install Error - “Kernel module failed to build.”

I'm trying to install this because Nouveau / the default driver, is unstable for me, and eventually results in GPU lockups unless I'm running low graphic mode. Got this error while trying to install ...
1
vote
1answer
1k views

How to install Ubuntu Trusty 14.04 in a qemu virtual machine

I'm running Debian Jessie amd64 with qemu version 1:2.1+dfsg-11 and want to install Ubuntu 14.04 for amd64 in a qemu virtual machine. But the installation process doesn't start because of a kernel ...
0
votes
1answer
56 views

Verbose messages at system start

In 14.04 after adding VERBOSE_INIT=YES to linux line in Grub it was possible to enable verbose messages at system boot. In 14.10 this trick doesn't work any more. Removing quiet argument from linux ...
0
votes
0answers
38 views

Strange error while loading a compiled module.

I want to have read/write support for UFS filesystem on my ubuntu 14.04. To do that, I downloaded the latest sources for ubuntu kernel using the command :- apt-get source linux-image-$(uname -r) ...
-1
votes
1answer
24 views

custom kernel for secure system

I am pretty new to the linux community and I've started learning it for last few months. After learning the basics of commands and system architecture im now trying to learn the grass root level ...
0
votes
1answer
79 views

how to check if zfs is using the kernel module

I am having perfomance troubles (transfer rates only about 50MB/s using 6 2TB server hdds WDC WD2003FYYS, each doing app 150 MB/s) with my raidz and was hoping to increase it with the ZFS on Linux ...
64
votes
6answers
14k views

How is 'rm -rf /' able to delete all files in the system?

I haven't tried this command on Ubuntu (for obvious reasons) so I am not sure if Ubuntu will allow its execution. But it's famous for deleting everything. Just out of curiosity, what happens when the ...
-1
votes
1answer
53 views

Loaded Modules Information using a trusted lsmod command

I have copied lsmod command script from /sbin/lsmod to a directory. I renamed lsmod to elsmod. Now when i run this command from a script it doesn't give me any output. what should i do to get the ...
0
votes
0answers
50 views

Catastrophic GUI breakdown and feezing

I'm experiencing catastrophic GUI breakdowns and freezing with my Ubuntu machine. It also randomly freezes but the time it takes from booting to freezing is different everytime. Observation so far ...
1
vote
0answers
455 views

USB 3.0 READ Speeds enabled with “libccid” but WRITE Speeds still slow; “SuperSpeed” recognized

Fresh install of Ubuntu 14.04.1 LTS (updates bring it up to 14.04.2 LTS) USB 3.0 flash drive (Corsair 64 GB Survivor Stealth and Silicon Power 64G M70); both show slowness prior to loading ...
3
votes
1answer
103 views

Dell 7537 syslog over 40 GB

I am a new user and not a techie, but i love ubuntu. I am at 14.10 currently and have almost 60GB allocated to /var but lately the /var folder has been eating up almost over 40GB of space, the last ...
0
votes
0answers
213 views

how to apply new kernel configuration created by make menuconfig

I am compiling Raspberry PI kernel and i am asking here because i think it is almost same or similar. while following this step, i want to change some configuration of kernel. So i used make ...
1
vote
0answers
486 views

How to update kernel to 3.19 on 14.04 with i915 Intel graphics?

On 14.04.2 LTS (amd64), I need to update the Linux kernel to 3.19+ (because it adds support for some hardware I have). The computer uses EFI and has an integrated Intel Graphics controller. lspci ...
0
votes
0answers
13 views

I want to download Ubuntu 14.04 source to my CentOS :Linux jwang 2.6.32-279.el6.x86_64 [duplicate]

I want to download Ubuntu to my 14.04 source to my CenTOS :Linux jwang 2.6.32-279.el6.x86_64 #1 SMP Fri Jun 22 12:19:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux I also I would like to compile this ...
0
votes
1answer
444 views

Kernel module compilation fails (gcc: error: elf_x86_64: No such file or directory)

I'm trying to compile a simple kernel module, but the compilation fails due to a wrong argument passed by make to gcc. This is the Makefile: obj-m += test.o all: make -C /lib/modules/$(shell ...
0
votes
1answer
311 views

xubuntu freezes every time [duplicate]

I am asking this as there does not seem a clear way to diagnose the problem. I have searched several sites including this one. After a few minutes Xubuntu freezes and I can't use the mouse or ...
-1
votes
1answer
224 views

uname -a gives a wrong kernel version

I have the 3.16 Linux kernel package installed on my Ubuntu 14.10 server, but when i try to run uname -a it gives me this: Linux example.com 3.13.0-36-generic #63-Ubuntu SMP Wed Sep 3 21:30:07 UTC ...
0
votes
1answer
245 views

Changing kernel driver from wl to b43

im running on ubuntu 14.10 and i want to change my wireless kernel driver from wl to b43. is there a step by step procedure to do this? here's my adapter info. i run sudo lspci -k 08:00.0 ...
0
votes
0answers
20 views

Kernel on Ubuntu Partition has stopped working

I was writing some software on my ubuntu partition, and suddenly I couldn't open any new apps. I turned my laptop off and on, and I could boot to my ubuntu partition from grub, but then I got a weird ...
0
votes
0answers
161 views

No wireless on Asus N56VJ, AR9485 Wireless Network Adapter

I've been having a problem with my wireless connection since yesterday: I can't connect to some of my wifi networks -my password doesn't seem to work-, and when I do, the connection is slow, keeps ...
0
votes
0answers
63 views

Applying recent kernel change to older (14.04 LTS) kernel

I believe there is a kernel fix for 2015 lenovo touchpad buttons not working in linux. It was just created (3/15) on the mainline kernel. This issue (see last post): issue report Pointing to this ...
0
votes
1answer
176 views

getting error when inserting driver module

error as can not be read private key when I install driver Realtek driver module to linux ubuntu 14.04 (3.13-.0-32-generic) how to resolve this problem . can i downgrade my kernel version of current ...
0
votes
0answers
349 views

Ubuntu 12.04 Kernel 3.19 or later

I have a Dell E7440 Ultrabook with an eDock Port Replicator. That dock is somewhat special in the way it handles the DVI and Displayport Connectors. Kernel Support is available from 3.19. On this ...
0
votes
0answers
166 views

Error compiling kernel

I am trying to compile the kernel for the pcDuino3 using this tutorial. The only problem I am experiencing is when running make. Make just exits with the an error like: make[1]: *** [sub-make] Error ...
0
votes
0answers
15 views

Add module to linux kernel

i'm working in project with python and mysql database .my question is how add this python script to the linux kernel so that i put it in raspberry Pi+. I can do this or not!!!
-1
votes
1answer
283 views

python3 - ImportError: No module named '_chipset'

I tried to run python3 script as follows : $python3 quick_dump.py ...but every time I get output as : ImportError: No module named '_chipset' I just watched the quick_dump.py script imports ...
1
vote
1answer
236 views

What is “linux-tools” package? Is it needed for “average” desktop user?

What exactly is "linux-tools" set of packages? It is released with every kernel version, but (from what I can see) it contains only a few diagnostic utilities (cpupower, pref, turbostat, ...
5
votes
3answers
427 views

Writing to a specific memory location

I am trying to edit a file inside /proc/devices-tree to be exact, and i am unable to do so, I am getting: "permission denied" or "Input/Output error". I have tried all possible combinations of ...
0
votes
0answers
133 views

Kernel Panic running Ubuntu 14.10 bare-metal on IBM Power 8 (8247-22L) with level 3.16.0-31

After installing Ubuntu 14.10 on an IBM Power 8 LE system (8247-22L) with bare-metal image (kernel 3.16.0-23) an apt-get dist-upgrade command upgrades the kernel to 3.16.0.31. A reboot with this ...
0
votes
0answers
71 views

Is there a way i can download specific version (Build of Ubuntu ) ubuntu server?

Is there a way i can download specific version (Build of Ubuntu ) ubuntu server? I need to download the ISO directly so that when installed i get following root@:~# cat /etc/lsb-release ...
1
vote
1answer
67 views

Undetected Screen on my laptop since kenel 3.13.0-45

In Kubuntu 14.04 LTS, since kernel update 3.13.0-45, the laptop display remains black after boot. The system is running (I can fully access it via rsh) and the graphic card also (for external ...
0
votes
1answer
64 views

Where is the Ubuntu 14.04 kernel source code located? [duplicate]

I want to modify and want to make my own operating system using source code, so obviously firstly I need the kernel. I've decided that I'd use the Ubuntu 14.04 (Trusty Tahr) kernel. Where do I ...
1
vote
1answer
1k views

Ubuntu 14.04 Black screen nvidia driver 347. taints Kernel?

My pc, gtx 750 with nvidia 347 driver ubuntu gnome 14.04, boots only to black screen. When I look into the /var/log/syslog I get this error with the nvidia driver. nvidia: module license 'NVIDIA' ...
0
votes
0answers
34 views

Booting flash drive on multiple PCs

I installed Ubuntu GNOME on a 120GB USB 3.0 SSD with the intention of making a portable Linux install (not live) I could boot off of any system. I'm getting kernel panic due to UUID being incorrect ...
0
votes
1answer
253 views

Can't update kernel version because dpkg has an error everytime

I'm quite new to Ubuntu and want to upgrade my kernel to a newer version, but everytime I try I get the same error: Selecting previously unselected package linux-image-3.8.0-030800-generic. (Reading ...
0
votes
2answers
4k views

Change kernel version from command line [duplicate]

Is there a way to reboot with a different kernel version from the command line? I have Ubuntu PXE booted on a VM, and there is no graphical interface, but I need to downgrade the kernel (which is ...
0
votes
0answers
118 views

CODE INVOLVING GPY in python

The code I am trying to run is given below here. It is not executing beyond line 114 ie. print k. After, that the printing of the model is not taking place and the errors being returned have been ...
0
votes
0answers
80 views

Issues building driver for my x120e on Ubuntu

After downloading the Realtek Linux mac80211 based driver: from Realtek Driver Downloads, I'm encountering the following error; after changing to the "appropriate" directory and executing sudo make: ...
0
votes
0answers
110 views

grub rescue in dual booting (with ubuntu 12.04) and kernel panic error

Can anyone please help me out in solving the grub rescue problem that I'm facing on my Lenovo G570 laptop (installed operating systems are - windows 7 home basic and ubuntu 12.04 LTS)? The initial ...
1
vote
2answers
82 views

Do I need to install kernel source to apply a patch?

I'm using Ubuntu 14.04 with Linux version 3.16.0-30-generic. I've installed Beignet for OpenCL support. I'm running into some errors and the Beignet documentation says to resolve them by applying this ...