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

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38 views

Compile kernel gets no error but version doesn't change

So I'm trying to compile a linux kernel in Ubuntu 14.04 to change the linux version from 3.16 to 3.14.4 and also to change one thing in config. I followed this tutorial step by step. Exept Step 6 ...
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219 views

Bluetooth with Kernel 3.18 on Ubuntu 14.04

I'm running the kernel me@me:~$ uname -r 3.18.0-031800-generic because I need support for MST. Since I've installed this, I cannot connect with my bluetooth headset(or mobile phone). For a short ...
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87 views

How to “tell” Software updater, I have moved to a new kernel

I am running ubuntu 14.04 (updated from 12.04 which was preinstalled prior to the release of 14.04.02). I am an experienced non-technical desktop gnu/linux user, but relatively new to ubuntu. I ...
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60 views

Switching computers with a persistent usb

I am trying to create a USB Drive to run the OS on several different computers, without installing anything to the computers themselves. I used pen drive Linux to create a bootable Live USB and have 4 ...
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390 views

amd driver catalyst 13.1 problem 15.04

I got a problem installing amd drivers. Here is the fglrx-install.log: Check if system has the tools required for installation. fglrx installation requires that the system have kernel headers. /...
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158 views

Something's wrong with my grub.cfg

I know that's pretty generic, but... I installed updates, which included a new kernel. I removed an old kernel and got: joliver@JOHN-DEV:~$ sudo apt-get purge linux-image-3.13.0-46-generic Reading ...
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418 views

How to install Virtual ethernet for kernel 3.19?

xUbuntu 14.04 LINUX Kernel : 3.19.4-031904 VMware Player 7.1.0 build-2496824 running vplayer show Virtual ethernet failed I try the method https://wiki.archlinux.org/index.php/VMware#...
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120 views

Wireless automatic disconnected

04-22-2015 My internal wireless adapter become disabled (the wireless led indicator isn't lighted), when I mount my laptop on a laptop table from my desk. Restart Ubuntu is the only solution I know ...
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29 views

Software updates after upgrading kernel

I recently upgraded the kernel to 4.0 on Ubuntu 14.04.. Will future software updates break the system? Do I need to revert back if I need software and security updates?
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366 views

How do I disable 5GHz channel with ath9k driver module?

I am looking for a way to disable the 5GHz in ath9k other than setting the country code. I have found that there is a patch files for the ath9k or actually the latest kernel 3.19 and 4.0 updated this ...
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4k views

How can I tell if my Ubuntu kernel leap second bug free?

I have few Ubuntu boxes Linux SERV01 2.6.32-38-server #83-Ubuntu SMP Wed Jan 4 11:26:59 UTC 2012 x86_64 GNU/Linux How can I check if the installed kernel is leap second bug free ? Don't have ...
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301 views

Deleting old kernel modules manually

Basically I like to have a "clean" system; so I run the ubuntu-tweak janitor from time to time to delete the old kernels. Today I did some manual checking and found the subdirectory 3.13.0-49-generic ...
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777 views

BGRT Errors on boot - Custom compiled kernel 3.19.3

After compiling my own kernel (yes, I know I'm not entitled to any support), I receive this message on boot: [ 0.077204] Ignoring BGRT: invalid status 0 (expected 1) It disappears after a few ...
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640 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 "libccid"...
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594 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 ...
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101 views

Access GPIO pins on pandaboard running ubuntu 12.04

The trouble I'm having is that the error message shows that the kernel does not support gpio. So, what should I do to make the kernel support gpio?
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296 views

FRITZ!WLAN USB Stick N v2 under ubuntu 14.10 possible?

Edit April 7, 2015: Meanwhile I installed a mainline kernel, which works fine most of the time. After suspends, however, it often fails to reconnect, also, the number of failures increases if I ...
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755 views

Docker warning on cgroup swap limit, memory.use_hierarchy

I am getting this warning from 'sudo docker -d': WARNING: Your kernel does not support cgroup swap limit. even after following the steps (as in this link): modify below lines in /etc/default/...
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58 views

how to fix broadcom drivers for ubuntu touch?

How can i solve my issue to get ubuntu touch running on my phone? I just create new defconfig for Ubuntu Touch to port on Galaxy S2 Plus, after compile it without problems, since my device doesn't ...
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145 views

Lubuntu 14.04 boot errors

I'm trying to run lubuntu 14.04 (i386) on a old computer. I set up a bootable usb drive. After I choose to run lubuntu "without instalation" I get these errors: 02064241 pci 0000:00:Oa* BAR 4: error ...
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100 views

DualBoot, Ubuntu booting error - Kernel Panic - not syncing

I installed Ubuntu 14.04.1 LTS on a Computer that had only Windows 7 and now I am having an error booting Ubuntu. When I select in the Grub to boot Windows, it works well but Ubuntu seems to have an ...
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25 views

How does KSPLICE for the desktop interact with the “need to restart to apply changes” dialogue after updates?

One would expect that it would make those dialogs disappear. I'm not saying that it doesn't for me, as I haven't installed ksplice. I am saying I'ld like to know whether it works to eliminate those ...
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351 views

PCIe card BAR regions ignored on Server 14.04.1 LTS

On my system, with Ubuntu Server 14.04.1 LTS installed, one of the PCIe boards in the system (06:00.0) is having it's memory regions ignored: Interrupt: pin A routed to IRQ 10 Region 0: Memory at <...
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210 views

USB Device Issues - ongoing enumeration

Since I want to run a custom driver I have a custom Kernel running (3.13.11). Recently I tried to build the 3.18 series. Since I failed to find the Ubuntu patches I build a vanilla version. I tried ...
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70 views

New to Ubuntu, Kernel question

I'm new to Ubuntu and I'm using 14.10. I have a Rosewill Wireless card, n600PCE, and it's giving me a driver for Linux Kernel 2.4 or 2.6. As I am new, these will work, right? It's not like trying to ...
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124 views

How to prevent kernel or any broadcast messages from flooding the TTYs?

Is there a way to stop the ttys from being flooded by the kernel messages? The display shows a continuous stream of messages (which are also logged in the /var/log directory). Every text I key in ...
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58 views

latest kernel killed my ThinkPad W520 hotkeys

for some reason after latest kernel/nvidia and other updates on my 12.04.5 LTS running kernel Linux ThinkPad-W520 3.13.0-43-generic #72~precise1-Ubuntu SMP Tue Dec 9 12:14:18 UTC 2014 x86_64 x86_64 ...
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255 views

Periodic lockups showing kernel: [154858.820009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed… render ring idle

System is Ubuntu 14.04.1 LTS with kernel 3.13.0-43-generic, I have noticed the lockups periodically since 09/13/2014. I can't remember what kernel version was in use then possibly kernel 3.13.0-35-...
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335 views

Default Grub2 entry doesn't point lastest kernel version + “selinuxfs mount failed” boot error: how to repair?

I installed Ubuntu 14.04 in multi-boot with linux (Mandriva 2011/Grub Legacy). First it seemed to work. But on my first update in Ubuntu, I was "strongly adviced" by the system to update grub and got ...
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423 views

Ubuntu 14.04 kernel update from 3.13.0-40 to 3.13.0-43 caused my laptop to hang

Ubuntu 14.04, just updated from kernel 3.13.0-40-generic to 3.13.0-43-generic and now I can not boot my laptop. It seemed that the new kernel came with some Navidia drivers that caused this problem. ...
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85 views

What does it mean for /proc/kpagecount to be zero

for some entries in /proc/kpagecount, all the 64 bit entry is zeros and yet the page is allocated (confirmed from /proc/kpageflags). What does it mean for kpagecount to be zero for certain physical ...
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41 views

Modules in /proc/modules address issue

If I cat of the /proc/modules the RAM address location of modules is always 0x0000000000000000. Any ideas? vmnet 51316 13 - Live 0x0000000000000000 (OX) parport_pc 32701 0 - Live 0x0000000000000000 ...
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147 views

Circumventing MacBook Pro's motion sensor using /dev/input/js0 as a joystick

I'm on a MacBook Pro 8,1 running 14.04 and I've never plugged in any device with a joystick to my laptop. When I was trying to fix an input problem I was having, I checked /dev/input/js0 thinking that ...
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236 views

ubuntu 14.10 shows kernel panic error on startup after upgrade from 14.04

i upgraded from 14.04 to 14.10, when prompted by the system update utility during the upgrade some packages did not install properly / gave errors (i cant remember which packages) after restart it ...
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669 views

LVM VG is not activated during system boot

Since upgrade from Ubuntu 14.04 to 14.10, one of my VGs doesn't come online when the system boots up, and unfortunately, this VG has my root FS, thus I'm dropped to the initrd BusyBox prompt. ...
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116 views

Server crashed but why?

could someone tell me what causes the crash of this kernel panic? This machine (14.04.1) is a virtual machine on my KVM host (14.04.1) See the screenshot My host machine has 32GB of RAM and uses ~...
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342 views

Stuck on “Configuring bcmwl-kernel-source (i386)” while installing Ubuntu 14.04

So, as the title says, installation get stuck while Configuring that package. Now, I am aware that this question has already been asked, but the solution requires internet connection and I don't have ...
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254 views

Random kernel panics after upgrade to 14.04

I installed a fresh Ubuntu 13.10 on my Samsung series 9 (NP900X3C). It was working great. However after upgrading to Ubuntu 14.04, I'm getting random crashes and kernel panics. The system might run ...
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768 views

How to debug a kernel panic? Ubuntu 14.04

So, I have been having kernel panics. My computer will suddenly come off and then a dmesg like output shows on the screen. The first two lines read [20352.651631] BUG: Unable to handle kernel NULL ...
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3k 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 3.13.0-36-...
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756 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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211 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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333 views

Warnings during kernel compiling

I'm compiling custom kernel and during the process I'm getting warnings such as: drivers/isdn/hardware/eicon/message.c:6115:1: warning: the frame size of 1184 bytes is larger than 1024 bytes [-Wframe-...
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196 views

Build identical ubuntu kernel packages

I compile my own patched version of the upstream linux-kernel. Until now I have always used make-kpkg, by running CONCURRENCY_LEVEL=9 fakeroot make-kpkg --initrd --append-to-version=-patched ...
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36 views

Can I use my serial receipt printer as an emergency console?

I recently came into possession of a serial receipt printer and I would like to know if I could use it as an emergency print-out console for the following purposes: Kernel Panic (Stack Traces) Any ...
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57 views

Error While installing Kubuntu 14.04 in Virtual machine

Running Kubuntu 14.04 in Virtual machine Gives me an Error :- Boot : could not found kernel image : vmlinuxz.efi how can solve these ?
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92 views

laptop sees two connections when HD TV is plugged, but no image

With Apple Macbook Air 1,1 (Early 2008) and Ubuntu 12.04 with kernel Linux 3.2.0-68-generic-pae, when I connect it to an HD TV via the micro-DVI to DVI (Apple adapter) --> DVI to HDMI (I tried two ...
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190 views

linux-image-generic missing - is this a problem?

After removing old and unused kernels from my wife's laptop as per this question: What kernels & packages do I un-install? I thought I'd do the same on my laptop, since I've been running Ubuntu ...
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285 views

synaptics driver not workin with new kernel?

after I upgraded from kernel 3.13.0-29 my synaptics driver seems to stopped working. basic touchpad functions still work (this includes moving cursor and clicking) but no right click nor middle click ...
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784 views

How can I upgrade to Lubuntu 14.04.1 withot a PAE kernel?

On my Dell Latitude D800 laptop, which has an old Pentium M without PAE support, I was able to successfully install Lubuntu 14.04 from the CD. When I try to upgrade, I get the error: PAE not enabled ...