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

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>>>WARNING<<< Wrong ufstype may corrupt your filesystem

I was just now looking through /var/log/syslog and I found these line which worried me: ufs: You didn't specify the type of your ufs filesystem May 5 09:06:09 Bath-Towel kernel: [ 425.626221] May ...
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22 views

What is the Goldfish Kernel?

I was snooping around the list of linux-* packages earlier and noticed that there are linux-{,image-,headers-}goldfish packages. Package description (below) didn't do me much good and Googling has ...
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26 views

Kernel panic while booting preseed ISO for 14.04.2

https://help.ubuntu.com/community/Installation/UnattendedCD I'm following these instructions, attempting to set up a preseed install. When I boot the resulting ISO in vmware, it kernel panics: ...
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101 views

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

When I boot ubuntu 15.04 from usb, I got this problem: kernel panic-not syncing: VFS: unable to mount root fs on unknown block(2,0)
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127 views

Startup problem with Lubuntu 15.04

I installed Lubuntu 15.04 on my PC. It was running perfectly smoothly, so that a few days it is having a strange problem that happens sometimes, not all the time. What happens is that when I turn on ...
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Docker and AUFS with custom kernel issue

I followed the steps on this website to get AUFS compiled in a certain way to use as my drive pooling solution but now Docker service won't start on ubuntu. anyone got any ideas please? ...
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32 views

Need to get files back after losing all the linux-image-generic from LVM partition

What I was doing (not as important, just wanna make sure all the info is out there) I'm on Ubuntu 14.10, decided to upgrade to 15.04. I had to delete xorg-xserver because it was broken and Ubuntu ...
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90 views

There is a way to patch AMD catalyst 14.12 in order to make it work with kernel 4.0.1?

here I go: my OS is Ubuntu 14.04. I was wondering about upgrading the kernel to the recent and latest stable 4.0.1 version (my current one is 3.16). Since I have already installed AMD Omega drivers ...
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Receive notification on new kernel release

I would like to receive a notification (preferably rss digest) on each stable kernel release in http://kernel.ubuntu.com/~kernel-ppa/mainline/ Does anyone have an idea how to parse a new update into ...
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46 views

purging old kernels fails to remove old initrd files

Can't explain why... I assume it isn't safe to simply manually delete them, so some guidance would be appreciated. Here's a ls of my /boot directory (obviously, I'm running the 3.13.0-51 kernel): ...
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Having problems with negative monitor channel, intimidated!

When I try this command: aireplay-ng -1 0 mon0 -a xx:xx:xx:xx:xx:xx I get this output: No source MAC (-h) specified. Using the device MAC (xx:xx:xx:xx:xx:xx) 17:51:23 Waiting for beacon frame ...
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cannot boot into login screen after uninstalling some kernel update packages

In Ubuntu 12.04, I tried to upgrade the kernel as required by a software XXX that I was installing. So as per XXX installation instructions, I installed these packages using apt-get: ...
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What exactly is command like “iso-scan” in grub?

In grub manual, it's not mentioned as a grub command. It passed right after linux command. The grub manual says about linux command: Command: linux file … Load a Linux kernel image from file. ...
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54 views

NVIDIA Driver Problem After New Kernel Build

I'm running Ubuntu 14.04 in my system. Recently I did a clean build from the source code and installed the new kernel but unfortunately when I try to start the new kernel, the desktop remains blank. ...
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14 views

Ubuntu kernel and microphone support

It seams the latest kernels used by Ubuntu do not support certain models of chips. I use Realtek ALC887-VD and my microphone does not work since the last kernel updates. I use 15.04, previously used ...
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11 views

Bad Data CRC can't get kernel image while booting imx6 board

I am trying to boot imx6 board with ARM Linux Kernel. But it is saying cant get kernel Image. I am getting the following when seen in minicom: Booting kernel from Legacy Image at 10800000 ... Image ...
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19 views

VMware Tools and multiple kernel versions

When I have VMware Tools installed on a machine that has more than one Linux kernel, do I need to run sudo vmware-config-tools.pl once on each kernel? If one kernel requires that the kernel modules be ...
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10 views

Get Linux kernel to compile with specific name

Official builds of Ubuntu's kernel tend to have names like 3.16.0-33-generic. The generic part is the local build string or whatever it's called and is not what I'm concerned about. How come when I ...
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26 views

Unable to boot “ERROR: No configuration file found” - NOT USB STICK OR INSTALL

I updated my computer and it updated to the latest kernel. After a restart I get the following: ERROR: No configuration file found No DEFAULT or UI configuration directive found! boot: If I type ...
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34 views

How to apply a kernel patch?

I am running in to the following dmesg with bumblebee: [ 420.238108] vgaarb: this pci device is not a vga device The same issue has been discussed here The workaround suggested is to apply this ...
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60 views

What might cause “version 'KERNEL_VERSION' has bad syntax: version number does not start with digit” during update-initramfs -u

When I run sudo update-initramfs -u I get the error output dpkg: warning: version 'KERNEL_VERSION' has bad syntax: version number does not start with digit update-initramfs: Generating ...
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16 views

Ubuntu 14.10 server locked after cleaning /boot

My Ubuntu 14.10 server locked after cleaning /boot. It has been working without any problems for several months, but yesterday I received an error message saying that there was no space on /boot. I ...
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77 views

Absent frontend0 with USB DVBSky S960/S860 - driver bug?

I was pleased to upgrade, today, to Ubuntu 15.04 and to get a 3.19 kernel because the Linux TV Wiki suggests that, from kernel version 3.18 onwards, my "Mystique SaTiX-S2 Sky V2 USB (DVBSKY S960 ...
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25 views

Why doesn't my nvidia driver module get aliased to just 'nvidia'

I have nvidia-346, nvidia-346-dev and nvidia-346-uvm installed (on my Kubuntu 14.04). For some reason, the modprobe.d file this installation create does not alias 'nvidia-346' as just 'nvidia'. Why? ...
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45 views

Ubuntu Crashed & can't reinstall from USB

When I tried to log in to Ubuntu 14.04 after it was in sleep mode, the cursor freezed so I restarted using the command: sudo reboot But whenever I try to log in again, I get a Black screen. I ...
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52 views

Will I get update on both kernel and application, on my Ubuntu 14.04 with kernel 4.0?

I installed 64bit generic kernel 4.0 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/, on Trusty (i.e. Ubuntu 14.04), following ...
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61 views

kernel mismatch after upgrading from 12.04 to 14.04?

I just upgraded my 12.04 to 14.04. After that I wanted to install the kernel headers (required to run vmware client). $ sudo apt-get install linux-headers-generic The command eventually fails: $ ...
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61 views

Kernel error when trying to install Ubuntu alongside Windows 8.1

Why does this kernel error appear when I'm trying to install Ubuntu alongside Windows 8.1? And what can I do about it? Kernel Offset: 0x0 from 0xffffffff81000000 relocation range....... --[ end ...
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19 views

U-Boot switch kernel on OMAP device

I build my own kernel for armel architecture, successfully installed it on my device, can see it in kernels list: dpkg --list | grep linux-image ii linux-image-2.6.33-500-omap ...
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18 views

How to disable graphics card

Is it possible to disable one of my two graphics card as a grub parameter? And is it possible to disable both graphics cards?
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41 views

Need Ubuntu with real-time extensions and GLIBC >= v2.15

I have Debian Wheezy with an RTAI kernel but it has EGLIBC 2.13 and I need 2.15 or higher. I've tried compiling a kernel with PREEMPT-RT on Ubuntu 14.04 and latency is horrendous, so something didn't ...
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26 views

Not able to configure bluetooth wireless earphones w/3.11.0-12-generic kernel

Greeting Linux Debug Demigods, Just confiscated a really slick pair of Bluetooth wireless earplugs. I finally realized my machine does not include Bluetooth hardware, and so tracked down, and plugged ...
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48 views

Removing Utopic HWE-Stack and downgrading X.org and Kernel to use external projector on ThinkPad T450 running Ubuntu 14.04.2

As indicated in the previously asked question: 14.04 Thinkpad T450: Text getting messed up on large screens I am also experiencing this problem (garbled text and missing letters) when using an ...
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26 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 ...
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62 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 ...
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46 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 ...
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17 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 ...
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16 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) ...
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28 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 ...
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61 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 ...
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28 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 ...
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18 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 ...
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80 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 ...
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44 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 ...
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107 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 ...
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37 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 ...
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11 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!!!
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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 ...
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32 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 ...
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27 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 ...