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

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298 views

blender does not start after kernel update despite reinstall

Hi I recently updated my ubuntu 12.04.3 installation with the new kernel 3.8.0.30 After that blender did not start any more with the message that: /usr/lib/blender/blender: error while loading shared ...
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513 views

cannot find import; DLL may be missing, corrupt, or wrong version. Wine kernel32.dll error?

I'm trying to install hard drive wiping software that was written for windows. I have downloaded wine and get through most of the installation process until the program tries to open. It is here where ...
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740 views

LXC on Precise with linux-image-generic-lts-raring … do I get the full namespace support?

Kernel 3.8 adds full namespace support, as far as I am aware. The package linux-image-generic-lts-raring ("Raring Ringtail kernel") offers this on Precise Pangolin installations (screenshot): Older ...
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328 views

Cannot access local variables using systemtap

I am just getting started using systemtap. On my 64bit Ubuntu 13.04 system, I installed systemtap and dependencies + systemtap-doc and elfutils then added the ddep repository to my apt/sources.list ...
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580 views

Hyper-V frambuffer driver not working correctly

Running the up to date Alpha of Xubuntu 13.10 on Hyper-V (WIndows 8 Pro) I noticed the included Hyper-V frambuffer driver does not work as expected. According to the commit message ...
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566 views

Ubuntu 13.04 kernel panic after installing laptop-mode tools

Since my laptop was overheating I first installed Jupiter. At that point there was no problem. But then I installed laptop-mode tools. Now the problem is every time I try to switch from battery to AC ...
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150 views

Is it possbile to load module compiled under kernel 2.6.x to a system with kernel 3.8.x

I have Marvell USB wireless driver src which only supports up to kernel 2.6.8. Now my system is Ubuntu 13.04 with kernel 3.8 and I can not compile the src under the new kernel anymore. I found the ...
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300 views

Driver r8169 not working after installing kernel 3.9.8

I tried to install kernel 3.9.8 on my Kubuntu raring, but the network driver don't work anymore! (r8169) I hope that it is fixed as soon as possible. I went to kernel.org and there is written that I ...
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871 views

Cannot get Wireless working by any means on 12.04 (Broadcom Issues)

I am a linux newbie interested in getting to know my computer a little bit better. The last time I even tried linux was Ubuntu 8.04LTS (Hardy Heron). I am not scared of the terminal but I am not ...
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262 views

Kernel panics randomly

My system randomly crashes. I cannot reproduce the crash except using this command: echo c | sudo tee /proc/sysrq-trigger Everytime it crashes (like once a week). I can boot and work with the ...
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44 views

system log not perpetually scrolling?

rsystemlogd is installed - when running - then system log is scrolling too with kernel.log and logging of eth0. Now it happens that system log is not scrolling despite of that rsystemlogd is still ...
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582 views

Can't get kernel module `uinput` started

I'm trying to get my BD remote to work with my Ubuntu media server and XBMC. I've followed the directions here: http://forums.boxee.tv/showthread.php?t=15200 I get everything installed, but uinput ...
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340 views

Xubuntu with custom kernel : why is it using configuration from /boot?

I've downloaded the latest stable Linux kernel source (3.9.4), I'm running Xubuntu 13.04. I'd like to try to build my own kernel, as I'm quite comfortable at my hardware. As suggested, I did the ...
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241 views

dpkg error when installing linux

After running: sudo apt-get -f install or sudo apt-get install linux this error appears: dpkg: error processing linux-generic (--configure): dependency problems - leaving unconfigured dpkg: ...
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909 views

Why the installation fails for this package? it says linux-headers not found but it is there

This package is failing to get installed, but the linux-headers are installed. root@sun-Alienware-X51:/var/tmp# uname -a Linux sun-Alienware-X51 3.5.0-28-generic #48~precise1-Ubuntu SMP Wed Apr 24 ...
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440 views

Latitude D630 Fan Not Working

I have a Del Latitude D630 That the fan never turns on. I tried FanControl. pwmsensors doesn’t show anything.
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313 views

Ubuntu 12.04.2 showing a kernel panic at the startup

I'm using a Acer Laptop 5100 (Athlon 64 TK-53, ATI 1100, 320GB HD, 4GB RAM, Broadcom 4311 Wifi), and I was using for some time Ubuntu 10.04 and later 10.10 64-bit versions without a single freeze. I ...
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119 views

Installed kernel, and printer driver - No Unity?

I ran installation of printer drives for Epson Stylus S22 (From original website) The most recent installs are: 2013-04-10 12:06:53 install linux-image-3.5.0-27-generic:amd64 <none> ...
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435 views

How to enable switching Hybrid Intel/ATi with mux on Ubuntu 12.04?

I have notebook with hybrid intel/ati HD5650 graphic (with mux). I want to install previous kernel 2.6.35 like on ubuntu 10.10 because on that kernel a can switch my graphic without any problem with ...
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376 views

Tried to install a Kernel, now i have mutliple problems!

I tried to upgrade the kernal to 3.8.2 but it didn't work. So after learning that 3.8 wouldn't work with bumblebee I tried to go back and install 3.5.25. It still didn't work. uname -r says: ...
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277 views

high interrupts

I have high Rescheduling interrupts and Local interrupts. while doing nothing my total CPU wakeups reach 275-400. While watching movies it reaches up 900-1000. And while browsing the Internet it ...
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107 views

Where do I get linux-headers-3.0.0 for 12.04

I'm pretty new to Ubuntu, so question may seem stupid. I have a module which used to work on my parents laptop. After several updates module no longer works, and I'm pretty sure, old kernel would ...
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301 views

Unable to install Ubuntu - Kernel panic

I was installing Ubuntu 12.10 but my computer shut down and every time I tried to install, showing the following:
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244 views

What priority to use calling sched_setscheduler

I am writing a server that I do not want preempted by any other user process or "low priority" kernel process. I'm using code like this: struct sched_param sched_param; memset(&sched_param, 0, ...
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51 views

Linux kernel: page substitution policy

I am supposed to answer for homework which algorithm is implemented in Linux for the virtual memory page substitution and also give some extracts of the code to prove that. After some research I have ...
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314 views

Problems with booting Linux after updating kernel

After updating linux headers from 3.5.0-19 into 3.5.0-20 i faced booting problem. I don't know reason, sometimes boots normally, but sometimes i need to reboot 3-4 times. I tried to boot with recovery ...
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1k views

WiFi can't connect after suspend

I've had this problem since Ubuntu 11.10 (my first install) but I was able to get around this issue with this answer. After I installed Ubuntu 12.04.1 I tried to use the same fix as before but I ...
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12 views

Ubuntu 15.04 suspending long after lid is closed

My MacBook Air has Ubuntu 15.04 installed. Ubuntu 15.04 only suspends after about 10-30seconds after lid is closed. This worked totally fine in ububntu 14.04 and 14.10. I hav attached the code in: ...
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13 views

How can I print my own statement in terminal during kernel 4.0.4 compilation in Ubnutu 12.04

I tried to put some printk lines in start_kernel() function But those lines are not showing in terminal during compilation and install of kernel. I don't know how to do that. Or is there any way to ...
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19 views

How does 'upgrade packages during installation' affect point release and kernel updates?

I've recently freshly installed Ubuntu Server 14.04, allowing package updates by internet on installation. This was installed from the 14.04 disc image, downloaded before any of the 14.04.1 and ...
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29 views

Kernel questions

I'd like to install kernel 4.0.4 on my 14.04. I want to do it mainly for educational purposes. In fact, I want to learn how to install the binary kernel and how to compile it from sources. I found ...
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15 views

BFQ I/O Scheduler

As you probably know, the BFQ scheduler drastically improves disk performances in a typical desktop usage scenario. Now, I wanna try it on my 14.04.2, but all the guides I was able to find googling ...
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18 views

recovery of files from the home folder to delete the kernel by accident

I'm starting to use linux and decided to use ubuntu 14.10 mate! one of them was that of an innocent I ended up deleting my kernel system in order to increase the space in the folder/boot ja that my ...
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7 views

Kernel panic on boot with Elan touchscreen with kernel 3.16

I have been having issues with booting ubuntu on my new Acer Aspire R3-471T-53LA. There is a 1/6 chance that it will boot, and the other times, there will be a kernel panic after I2C-HID fails to ...
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11 views

My linux is not being displayed in the grub

I installed and built my linux kernel following the instructions given in http://kernelnewbies.org/KernelBuild, but my newly installed kernel is not displayed in the grub and I am getting a message ...
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14 views

There are no pwm-capable sensor modules installed for my Z97M Plus board even with kernel 3.19

I just bought new motherboard which is Asus Z97M-Plus. Earlier I have a P8B75-M. I used to control my fan speeds with that board. My fans have only three pins. But in the new board it won't work. I ...
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29 views

Unable to find an initial ram disk that I know how to handle

After upgrading to the next linux image, aptitude has outputted the following lines: Setting up linux-image-3.16.0-38-generic (3.16.0-38.52~14.04.1) ... Running depmod. update-initramfs: deferring ...
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27 views

How to install a specific driver from different kernel

My touch-pad driver is only supported in 4.0 kernel but running 4.0 kernel freezes my laptop is there a way I can install the driver of the touch-pad in my current kernel. My touch-pad is elantech. ...
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20 views

System freezing and preventing login

My system (Ubuntu 15.04) keeps having a problem where the machine is still up but I cannot login. At the GUI login, the spinner just spins and at the console I get: Username: dave Password: Welcome ...
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19 views

Live USB Kernel Panic error?

I tried to make a 14.04 live USB with Universal USB Installer. I get to the screen where it says Try Ubuntu, Install Ubuntu, etc. but no matter what I select, it eventually ends in this error; end ...
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28 views

How to use PCI ExpressCard(USB3.0)

I use Ubuntu14.04 64bit on laptop. now I need to use USB3.0 port. and I bought PCI ExpressCard(USB3.0) this is the express Card and I tried to connect it. it was recognized as follows. but,by lsusb, ...
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24 views

How to troubleshoot a video freeze

System information: Ubuntu 14.04.2 LTS Gnome 3.12.2 kernel 4.0.0-997-generic #201503310205 SMP Tue Mar 31 02:07:04 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux (this is an updated drm/intel-next kernel ...
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0answers
26 views

Access ubuntu terminal/sudo after pressing ctrl c and restaring while upgrading system

I tried to upgrade my system from 14.10 to 15.04 and while I was installing it asked me if I want to replace config file. I tried to compare, then didn't know how to exit Ipressed ctrl c and then I ...
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0answers
12 views

Suddenly no display signal during reboot test

I am running the reboot test by a simple script file calling init 6 to stress my system. But I found no VGA display signal while running reboot test in Ubuntu 12.04. By refer the kernel.log file as ...
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25 views

15.04 WiFi&Wired fail w v2.19 kernels; work on 15.04 w v.2.16 kernel from 14.10. Toshiba NB15t-A

Neither WiFi nor Wired will connect on 15.04 w v2.19 kernels (or v. 3 from kernel.org) but work with 14.10's v.2.16 kernels on Toshiba Satellite NB15t-A. Title says it all. Neither will connect, ...
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22 views

My cpu slows down after a while and does not recover

Sometimes, and I can't reproduce it (but it happens often enough - a few times a week at least) my cpu slows down below its prescribed minimum. This is an example cpufreq-info output from a minute ...
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50 views

I'm I being spied on?

so lets say am worried that I'm being spied on! So I regularly check on my log files. the kern.log reading is not making me feel calm at all... is like my camera is on and sending inputs somewhere I ...
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38 views

Help understanding or preventing this Kernel Panic?

Recently, I recieved a Kernel Panic while playing a game. I have not the slightest clue on how to even understand the panic, but I have provided few pictures that show it all. Other relevent info: ...
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60 views

Downgrade back to stock 3.16 kernel from 3.18.5 on Ubuntu 14.10

I upgraded the kernel to 3.18.5 for my Xbox One controller to use it, but I guess I failed because after I rebooted my laptop, it did a login loop after I logged in. Then I installed the kernel ...
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32 views

how to use a different linux-image than the one is currently being used in ubuntu 14.02?

this are the linux-images I have and I am currently using 3.13.0-51 $ dpkg -l linux-image-\* | grep ^ii ii linux-image-3.13.0-51-generic 3.13.0-51.84 ...