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

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How to change the kernel for one of other distro (Gentoo)?

I'm having a "funny" problem with a Acer Aspire One 751h and Ubuntu (and Fedora, and Slackware, and Arch, and Debian, and OpenSUSE and...), where the computer crashes randomly (and the screen shows a ...
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22 views

wn-block (0 , 0) call trace install

I have big trouble with my PC. i have dual booth ubuntu and windows 7. When i'm recovery my windows 7, i got grub rescue boot. When i boot from USB which contains Ubuntu operating system, i am seeing ...
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13 views

Post Boot Kernel Panics

I've been having an issue as of late. It happens when I try to play Dota 2. I get into a match, and sometimes my computer will crash randomly leaving this error: Keep in mind these crashes are ...
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153 views

D-Link DWA-171 Driver installation problem

Hello so i downloaded official D-Link DWA-171 drivers http://www.dlink.com/xk/sq/support/product/dwa-171-wireless-ac-dual-band-usb-adapter, But when i try to install them in terminal using ...
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131 views

Ubuntu 14.04.1/2 installation: Unable to install the selected kernel

I am installing a new Ubuntu 14.04.1 on my Server (HP ProLiant DL360 G4) from an USB Stick. The installation runs until the step "Install the base system". Then I get this Message: Unable to install ...
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28 views

New ubuntu server hanging… trying to locate root cause

Thanks to anyone willing to help me locating a root cause. I presumably think it is due to limited memory causing the server to halt. After a reboot the machine works for a day or 2 and then hangs. ...
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22 views

How can i automatically upgrade to mainline kernel

I am using Ubuntu 14.04. I know how to upgrade the kernel manually and I manually upgraded the kernel to 3.18.2. Is there any way to upgrade kernel to 3.19 automatically?
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24 views

Unable to resume from stand-by

I usually let my machine suspend to ram after time X. That used to work very well but within the last few days, I have had problems multiple times to wake my machine up and get it back into working ...
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33 views

Java algorithm performance difference between Linux and Windows

We observe a very significant performance difference of an algorithm in java between Linux (ubuntu) and Windows. The difference is 3x-4x in favor of Windows. Test machine is i3770 quad core (8 logical ...
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23 views

Segmentation fault at 7f59002b3978 ip 00007f59…(long message)

I was writing a program last night and I was using g++. I was running the program and left it in between to get some food. When I came back I forgot that the program was running and I shut down my PC. ...
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27 views

ubuntu file system memory allocation

While building ubuntu OS image from source how to allocate specific memory to specific folders of filesystem i.e. /home will get xx GB, /sbin will get xxy GB, /bin get yytt GB etc. Is there any ...
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32 views

There are no OS options in Dell Recovery.

I was messing around with partition flags in gparted while trying to resize one of my partitions.I ended up removing the boot flag and I forgot to put it back and restarted my laptop. And now, ...
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37 views

TV tuner Avermedia AverTV Volar HD PRO - 3.2.0 kernel

I'm trying to get my TV card Avermedia AverTV Volar HD PRO working on ElementaryOS (based on Ubuntu, kernel version 3.2.0-76-generic). I've tried some tutorials I've found, but nothing works, ...
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48 views

Adaptec 8805 kernel panic on Ubuntu 14.04.1 64bit

I use QUADStor with Adaptec 8805 and constantly falls into a kernel panic by reason of AAC (adaptec) Current driver version: 1.2-0 (30200) Clean installed system with quadstor ... same errors ...
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35 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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19 views

My Ubuntu 14.04 wireless is not working

I changed from windows 7 ultimate to Ubuntu 14.04 lts yesterday on an fairly "old" compaq presario-c500-rt155ea and now my wireless is not working. Also as looked for updates it came at some point of ...
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25 views

How to check kernel module list at boot time and their order?

I have questions as I wrote title over. We know, we can check loaded module list with command lsmod. By the way, at boot time, what does kernel refer to for loading modules? Any file about that? ...
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50 views

How to reinstall a single kernel module

A server has 3 network cards, one being rather old. All Realtek. All NICs work thanks to the r8169 driver (module). In order to use some extra features, the Realtek driver was downloaded from the ...
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19 views

How to rebuild kernel?

Need to test if all my dkms modules will be included to kernel in next update, so now I want to repeat update process with current kernel. How to rebuild it?
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60 views

Question about Ubuntu Touch kernel version

I'm using a Nexus 5 device installed with Ubuntu Touch for a while, and i've noticed that the kernel used by Ubuntu Touch is nearly the same as Android 4.4.4 and 5.0.2 are using. I'm very interessted ...
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20 views

Will compiling a new kernel destroy bumblebee?

I am using ubuntu 14.04, and I want to update my kernel from .14 to the latest one (afaik at the moment .18). Furthermore, I am using bumblebee for being able to lower my power consumption. Will ...
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16 views

Very weird behaviour when signal sent from Kernel to UserLand Process

So I am sending a SIGUSR1 signal from a LKM to a userland process. Assuming I have the PID of the user-land process, here is the relevant code from the LKM: void s3f_send_signal(struct task_struct* ...
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22 views

Are systemd fixes backported?

My initial Stackoverflow question is: here. Launchpad bug #1333140 here indicates a fix has been produced (thank you to all involved!), see extract below. systemd (218-10) experimental; ...
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35 views

Block device drivers for linux kernel > 2.6

I am new to drivers development under linux kernel. After starting with the simple examples from the book Linux Device Drivers v3, I realised that the block driver API has been totally changed since ...
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64 views

Boot DVD failed w/Kernel panic - not syncing: Fatal exception in interrupt

Trying to install Ubuntu 14.04.1 LTS This is a brand new ASUS w/ Windows 8 pre-installed. I'm not trying to do a dual boot or anything. I've searched the forums and google and have already disabled ...
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59 views

Kernel Headers 3.10.18 not found in VMware Kernel Module Updater

I had Ubuntu 14.10 and VMware Player 7.0.0 installed on my Acer Chromebook 11. Wwhen I open VMware, I get the exact same error message as mentioned this thread - "What is the path to the kernel ...
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62 views

Compiling the Davicom driver on RK3188 chipset

I want to compile the module dm9601.c for ubuntu 14.04 on the mentioned chipset. I have read up the tutorials of Ian Morisson, e.g. here and here. I am also failiar with this. On an MK802 IV ...
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13 views

T9 keyboard using numeric keys

after bought an gamer mouse, that have 12 numeric keys at left side, i was wondering how to do an T9 keyboard to use that keys on ubuntu? I'm working with java but can't figure out how to integrate ...
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45 views

Cannot compile kernel?

I recently re installed my ubuntu and got it updated to 14.1..it has a generic kernel 3.16 as we all know..however, when I started to compile the kernel 3.19(downloaded from the official site) the ...
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69 views

Firefox crashes not due to plugins-latest FF on Ubuntu14.04

Firefox ver35.0 crashes after running videos for a while or even after seeing many .Gifs on Ubuntu 14.04 I have reinstalled FF and Ubuntu too. No luck. One window says; Must restart FF. Other window ...
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21 views

SCHED_BATCH policy for schedtool in Ubuntu 14.04

The INSTALL file of schedtool says that the SCHED_BATCH policy (-B) is implemented in kernels 2.6.16+. However, I am unable to use this policy in Ubuntu 14.04 (kernel 3.13.0-45)? The output of ...
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24 views

<AUDIO> Sharp blips and noise after kernel upgrade

I recently built and started using 3.14.22 kernel instead of default Ubuntu kernel 3.5.57 (that came pre-installed) on my laptop. With this new kernel I get buzzing noise in headphones continuously ...
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43 views

Openstack + Ubuntu Utopic/Trusty + nr_requests

Anyone know why ubuntu utopic/trusty doesn't allow to change nr_requests and I/O scheduler for instance that is running on the cloud using openstack? echo 129 > /sys/block/vda/queue/nr_requests ...
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34 views

Driver is automatically removed after kernel update

I had a problems with old wi-fi driver, so I have installed newer package, downloaded from the internet. Each time I had updates for kernel - this driver was removed after reboot, so I manually ...
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19 views

Is it possible to reduce the v4l source tree to just the modules I need?

I have a PVR card that needs a number of custom-built modules from linux-media (aka v4l). These are linked to the current kernel so every kernel upgrade, I have to set put the computer in a trance ...
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10 views

Can't read trace of tftpboot kernel panic - too long

I am trying to install a new kernel using tftpboot. When the kernel is loading, it throws a stack trace. It locks up the system so only a hard restart will work. Shift-pgup will not work either. It's ...
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37 views

put ALSA as module ERROR

I've got a problem. I have to enable on my kernel ALSA from built-in to Module because I need to install Realtek linux driver for ALC260. If I change it in my kernel configuration and I run make ...
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17 views

kernel.yama.protected_nonaccess_hardlinks is an unknown key

I want to clear the snapshots of Cassandra using : nodetool -h localhost -p 7199 clearsnapshot but it gives me an exception : Exception in thread "main" FSWriteError in ...
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30 views

Difference in scheduler, 64-bit vs 32 bit

So I am working on a fairly new linux kernel (3.10.9), and I was wondering if there was a difference in the way the scheduler works from 32 bit to 64 bit. I am wondering because I am running a ...
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246 views

VirtualBox for Ubuntu 14.10 Kernel driver not installed (rc=-1908)

I have this error message: Kernel driver not installed (rc=-1908) The VirtualBox Linux kernel driver (vboxdrv) is either not loaded or there is a permission problem with /dev/vboxdrv. ...
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58 views

how kernel gets upgraded on ubuntu 14.04 installation?

There are linux-generic and linux-image-generic packages, that track latest linux-image package as their dependency. Those packages could be used to update kernel automatically but they aren't ...
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20 views

get kernel panic log

My system keeps hanging every several hours. I think the problem is somehow connected with network, because plugging ethernet cable eliminates the problem (even if ethernet is used locally only). If I ...
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32 views

kernel panic not syncing attampt to kill init

I'm getting kernel panic error in kvm machine, kvm machine is on lvm storage and we can't boot vm's from CD or DVD. so please help me out from this problem. please find the attached scree shot for ...
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41 views

Logitech USB headset holding up parts of boot process

I am having problems with my Logitech USB Headset. When I have my headset plugged in when I turn on my computer, it takes longer to boot than usual. When I log in, all fonts are not anti-aliased, the ...
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20 views

Boot fail running 14.04 - have boot-repair pastebin

Not sure where next to turn I've tried boot-repair and been given then the pastebin info http://paste.ubuntu.com/9972046/ The error message is that /dev/mapper/ubuntu--vg-root can't be found I can ...
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21 views

How can I modify the Ubuntu-12.04 Server ISO to include non-default kernel and headers (lts-raring in my case)

I have an ISO which I am customizing via preseeding. I am able to customize it from the preseeding point of view but I want to do a little more. The ISO image I am using is the standard ...
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46 views

Boots from old kernel

Ran software update from Manager (Linux-3.13.0-44 is newest). When it finished, I went to Grub Customizer to remove old kernel listings. (Don't always do this, so I had kernels 3.13.0-32, 36, & 43 ...
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86 views

unable to delete older kernel image files & folders in Ubuntu 12.04

Prior to posting I have made attempts to find the answers among existing posts, however I was unable to find anything which worked. I am trying to clean up a HD which has only 4GB of free space. On ...
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57 views

swap memory value / percentage meaning

Swap memory can be set between 0 to 100 What Does It means when we set swap memory to .. ? swappiness= 0 Tells the kernel to avoid swapping processes out of physical memory for as long as ...
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11 views

Compiling and installing a 32-bit kernel on a 64-bit linux

I compiled 32-bit kernel on a 64-bit ubuntu and installed it. But when I tried to boot from it , it gave me an error: Failed to execute /init Kernel panic - not syncing: No init found And ...