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

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5
votes
1answer
6k views

How to reinstall newest Linux Kernel?

Hello I upgraded all packages on my Ubuntu, and kernel also. But in upgrading process kernel upgrade failed, and I must always after grub load select older kernel. It is a terminal command to ...
0
votes
0answers
6 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 ...
0
votes
1answer
57 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 ...
3
votes
2answers
262 views

How can I use Kernel 3.19 in 14.04 now?

So I'm rebuilding my storage server. For stability, I want to use Ubuntu server 14.04 LTS as the OS. However, I'm planning to use Btrfs with RAID 5, and this has been greatly improved in kernel 3.19. ...
0
votes
1answer
26 views

Why is there no /proc/sys/kernel/softlockup_thresh

and, more importantly, how can I adjust this threshold for Ubuntu 14.04 server installations? I have standard Ubuntu 14.04 server VMs crashing due to CPU softlocks and VMWare recommends adjusting ...
4
votes
3answers
125 views
+150

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
2answers
55 views

CPU frequency control

I have a kubuntu 14.04 with the latest HWE kernel (3.16.0-31-generic), and a Xeon 1246v3 processor (which is basically an i7 4770 with ecc support). The processor has base frequency of 3.5 ghz, and ...
0
votes
0answers
9 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 ...
0
votes
1answer
17 views

Can't boot Ubuntu on Asus 1225B [on hold]

I installed Ubuntu 13.04 and at the end of installation it asked to restart. I restarted but it didn't shut down. All it's done - asked to terminate processes(OK) and nothing else. I shut it down ...
1
vote
2answers
122 views

Sound no longer recognized after latest kernel upgrade (14.04)

This morning Software Updater showed notification of new updates. The kernel was part of the update which then required a reboot. Once I rebooted, my sound was gone and no longer recognized buy the ...
3
votes
1answer
27 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
1answer
166 views

Kernel panic while installing CentOS 7 in VirtualBox

I have a laptop with Xubuntu desktop 14.10 , and I installed VirtualBox and updated it to the latest version . I'm trying to install CentOS 7 (source downloaded from the official site) as a VM, ...
0
votes
0answers
13 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
1answer
82 views

How to generate linux-tools packages for customized kernel?

How to generate linux-tools and linux-cloud-tools packages for customized kernel by using Ubuntu build scripts? Tried to add do_tools=true which generates ...
-1
votes
1answer
27 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 ...
1
vote
0answers
39 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
1answer
929 views

How to install exfat-nofuse?

Has anybody of you tried to install exfat-nofuse. I am not sure how to install it. Compile it as a module, or recompile my kernel?... Also, do i have to recompile it after every kernel update? Will ...
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
0answers
31 views

3.19.3 kernel driver for 174f:14b2 (syntek)

I am not able to find driver for my integrated webcam - please advise if anyone faced similar issue and was able to resolve it. Details: lsusb sees the device as 174f:14b2 Syntek PS.: stkwebcam ...
0
votes
1answer
24 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 ...
4
votes
1answer
952 views

How do I modify “/sys/kernel/mm/transparent_hugepage/enabled”

I use mongodb 3.0 and I find a warning: MongoDB shell version: 3.0.0 connecting to: test Server has startup warnings: 2015-03-13T16:28:29.405+0800 I CONTROL [initandlisten] ...
0
votes
1answer
30 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 ...
-1
votes
1answer
40 views

python3 - ImportError: No module named '_chipset' [on hold]

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 ...
0
votes
1answer
44 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
2answers
159 views

“Kernal panic - not syncing: Timeout synchronizing machine check over CPUs” Every time I boot from a live USB

I have been stuck on this for months but I built a new pc and every time I try and run linux off a live usb I get this after picking try ubuntu in the grub menu Sorry for cutting some of the ends ...
0
votes
0answers
16 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
2answers
279 views

The system is running in low-graphics mode (ubuntu 14.10)

I attempted to switch from redhat to ubuntu on this workstation Dell Tower 7910. I am using the iso file of ubuntu-14.10-desktop-amd64. I have created a USB boot. After ubuntu installation, I ...
-1
votes
0answers
21 views

Kernel does not support online resizing

I'm attempting to resize an ext4 filesystem, however I'm getting the error below. Im pretty certain the kernel support online resizing. Btw it's the root partition which im trying to resize. I don't ...
0
votes
0answers
34 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
1answer
2k views

Is it recommended to install “LTS Hardware Enablement Stack” for Intel GMA-500 Issues?

I have Xubuntu-12.04 LTS on my Sony VAIO P with Intel GMA-500 graphics for more than a year. I have solved some issues using the fixes suggested in the Poulsbo-wiki but unfortunately some issues still ...
0
votes
0answers
34 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
0answers
32 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
1answer
173 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 ...
0
votes
0answers
17 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
10 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
vote
1answer
37 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, ...
0
votes
0answers
44 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
22 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 ...
0
votes
2answers
41 views

Why kernel are updated regularly, even more frequent than os releases

I have been observing that with Linux kernels are updated regularly. What I believe that kernel provide a basic layer for os to interact different hardware and softwares. It is open source and in ...
6
votes
3answers
7k views

How does the linux kernel choose which firmware version to load?

I installed the latest firmware for my network card N-7260 from http://wireless.kernel.org/en/users/Drivers/iwlwifi#Firmware. I am using Ubuntu 14.04 with kernel version 3.14.01 from the kernel's team ...
-5
votes
0answers
44 views

How to make own Operating System by using source code? [closed]

Topic: I'm trying to understand how linux operating systems are made. I'm studying "Linux from scratch".. It says, we're required a linux operating system to make new linux operating system. As ...
-1
votes
1answer
80 views

How to build my own Linux distro? [closed]

Suppose, I've downloaded my kernel from http://kernel.org/ Now, How should i add desktop background with Mouse pointer, control panel, wallpapers etc.? Please help, Surely help would be appreciated!
2
votes
1answer
6k views

kernel panic-not syncing: VFS: unable to mount root fs on unknown block(0,2)

I'm so new to Linux and suddenly found the error message appear when i boot after i click install ubuntu Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,2)
0
votes
0answers
15 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 remain black after boot. The system is running ( i can fully access it via rsh ) and the graphic card also ( for external ...
0
votes
1answer
29 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 ...
11
votes
13answers
32k views

Virtualbox Kernel driver not installed

I tried to use my Virtual Box and this is the error I received - (I just updated to the new Ubuntu also) and I am VERY new at this Linux OS. Kernel driver not installed (rc=-1908) The ...
0
votes
1answer
84 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
25 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
0answers
26 views

Kernel update questions [closed]

I know what the Ubuntu kernel is and what it does, I was just wondering: What is the newest version I can upgrade to from 12.04.5 LTS without updating the kernel? I am running Ubuntu on my Chromebook ...
0
votes
1answer
52 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 ...