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

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kernel crash after applying kde window theme unsuccessfully?

I had been trying a bunch of different themes in KDE just because I kind of like to do that (don't judge me) and when applying a theme that emulates the windows 7 titlebar, kwin and kde started ...
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24 views

How to config the linux kernel?

I have a question on the kernel configuration in the Linux AndroidHLOS SW package in the Ubuntu developing environment. I checked the .config file in our target- the android mobile phone, the ...
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30 views

Grub doesn't boot after kernel upgrade

I upgraded my ubuntu 12.04 LTS via terminal and now grub doesn't find any kernel. I tried to look inside the /boot folder via grub terminal, but on my primary hard disk the folder seems to be empty. ...
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13 views

Kernel debugging

I am trying to set a kernel debugging between 2 Ubuntu machines, using a com port. It just does not work. I have tried to compile 3.15.6 kernel from kernel.org. Can somebody please help me? I am ...
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28 views

what kernel should be used with ubuntu 12.04

I have 2 computers with intel i5 cpu's, both of which are running Ubuntu 12.04.4LTS. However, one has kernel version 3.2.0-67 and the other has kernel version 3.13.0-32. Both have all the latest ...
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45 views

Custom Ubuntu 14.04 Trusty Tahr Live ISO - For TrafficSqueezer

I want to make custom Ubuntu v14.04 based live ISO with my TrafficSqueezer stuff in it. This allows users to directly use this Live ISO directly as a WAN optimization device without installation. ...
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14 views

No build folder for older kernel module

I am on Ubuntu 14.04, but I need to run a Linux kernel <= 3.8 in order to use a tool that is not compatible with more recent versions. I installed the linux headers and image from here, but I ...
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7 views

Firewire-core: bypassing the 1 second grace period

I am currently using the firewire cam AVT Guppy F080b and the IIDC Camera Control Library to store images whenever the camera is triggered. The application is not allowed to miss any trigger at any ...
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22 views

HWE update for 12.04, now programs don't run--fixes?

I recently updated the kernel on 12.04 to a version that is going to be supported until 2017. Problem is, FlightGear and Celestia don't run now, but I believe it's vitally important to run a ...
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27 views

Use an older version of batman-adv on 14.04

I have a number of BeagleBone Black (BBB) boards running a batman-adv mesh network. The batman-adv version built into the BBB image (kernel 3.8.13) is 2012.5.0. My desktop and notebook clients all ...
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30 views

Kernel Panic when starting

Installed Ubuntu on new laptop with Win8.1 installed from USB key. Worked fine and could dual boot. Installed updates and rebooted when instructed Got following message when booting into ubuntu: ...
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28 views

Change the priority of a module after insmod

After writing a custom module and insert with insmod how can I make it high priority in the kernel? If is a network program, and if it has higher priority than default network components, will this ...
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17 views

find the .config file for linux kernel 3.10.48

I'm trying to compile kernel source code(3.10.48), and I wanted to know that how can I find or retrieve the .config file for the kernel?
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20 views

Ubuntu 14.04 libnetwork.so crash for unity control centre

I am new to ubuntu and I am kind of stuck with network. I was having problem with connecting to wifi networks. Now the problem was that the network settings show the wifi networks available but when I ...
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31 views

how to install ksymoops on Ubuntu 14.04

I want to analyze kernel crash(Oops) using ksymoops. I am trying to install ksymoops on Ubuntu 14.04(LTS) 64 bit using command sudo apt-get install ksymoops but unable to install. Below mentioned ...
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32 views

Kernel compilation

I'm trying to compile a source Linux kernel (version linux-3.10.48). Using the make menuconfig command, all the configurations are done and the .config file is saved, but when I'm compiling the main ...
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62 views

kernel 3.13.0.32 Fan RPMs greatly increased

I have just updated the kernel from 3.13.0-30 to 3.13.0-32 for Ubuntu 14.04 that has all "stable" updates. As soon as I rebooted (several times) the two computer fans went from the average 1400 RPM ...
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18 views

EDCA do not prioritize the traffic correctly on atheros card

I am trying to make some tests on my Atheros card (3com, 11a/b/g Wireless card, 3CRPPAG175). I observed that for Voice and Video packets the band is divided by half. I expected that Voice will be ...
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80 views

Important installations failed

I have a new computer with ubuntu 12.04 LTS ready installed. I get a message telling me to install an important security update 'Linux kernel image for version 3.5.0 on 64bit x86 SMP, but install ...
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41 views

Syslog kernel ehci-pci errors (-19)

There are much the same error messages (20+ per second!) in my syslog: Jul 14 22:17:17 laptop-joost kernel: [ 5074.090203] ehci-pci 0000:00:1d.0: port 1 resume error -19 What does this message ...
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23 views

My Gateway's BCM57765/57785 SD card reader isn't working

The device will not show up with "sudo fdisk -l". This is not just a corrupt card, it's been reoccurring for every card I try. This is the output from the dmesg [ 21.835685] mmcblk0: unable to ...
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41 views

Ubuntu server 14.04 kernel panic at boot

Since when I installed netatalk on Ubuntu server 14.04 I get a kernel panic at boot. I think netatalk is the cause because I can see the word "appletalk" many times in the kernel panic screen. I've ...
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41 views

Booting into current kernel disables networking, virtual keyboard

I have a PowerEdge 300 running Ubuntu 14.04 LTS. A couple of dist-upgrades ago, my SSH connection died partway through and I can no longer boot cleanly. If I boot in to the current kernel (3.13), I ...
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15 views

Sierra WWAN Kernel Module Acting Strangely

So a few days ago I installed Zorin OS (basically, Ubuntu with a Windows-like desktop environment) on my grandmother's computer to save it from the slowness of Windows 7. Now, since she uses an ...
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39 views

Hyper-V console input weird characters

I am currently testing remote console access into an Ubuntu 14.04 VM running on Hyper-v 2012 R2 using WMI and incomplete/weird characters are being sent from Hyper-v in place of the actual login ...
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75 views

Kernel panic after installing 64-bit Ubuntu

recently discovered that my computer was 64-bit, and not 32-bit as I had originally thought, so I tried to install 64-bit Ubuntu. The live session (on a flash drive) booted up fine, and I installed it ...
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59 views

Ubuntu: Trouble with modprobe: 'Invalid Module Format', yet works after insmod

I am having a problem with Ubuntu not properly recognising a custom made kernel module. The kernel module is a spoof of raw1394 so that programs that look for the presence of a raw1394 module in ...
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39 views

Many files in /var/lib/dpkg/info/ corrupted; how to recover

When I run sudo apt-get (anything), I invariably get this error: dpkg: unrecoverable fatal error, aborting: files list file for package 'thunderbird-gnome-support' is missing final newline E: ...
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53 views

Mysql failed to start

i tried to restore a db backup to a newly created database, suddenly its starts showing error. Can't connect to local MySQL server through socket /var/run/mysqld/mysqld.sock so i checked ...
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16 views

Compiling a (specific) kernel module

I'm looking to compile a .c file which is said to be a kernel module. I tried to create a Makefile but still got errors. Specifically I am trying to compile https://github.com/JanmanX/HID-Apple This ...
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19 views

Want to know how how secure my system is with current settings

My system is at kernel 3.15.2 Mainline. I have Enabled the firewall with all ports closed. I have very strong passwords set for BIOS, Drive Encryption, and login SSH is Disabled. I have installed ...
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184 views

Guest Additions on Ubuntu can't find kernel headers

EDIT: Installing the lastest VirtualBox version made it work. I can't install VirtualBox's Guest Additions on Ubuntu. I've already did this, sudo apt-get install build-essential ...
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755 views

Can't upgrade kernel to 3.13.0-30 on 14.04

I think I broke something with apt on my system. I'm trying to update the kernel to 3.13.0-30, but when I run apt-get I'm getting the following output: Reading package lists... Done Building ...
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130 views

How to make Huawei 4G module ME909u-521 work on Ubuntu?

I'm having some trouble having an Internet connection on 4G with Ubuntu (latest version, latest kernel). I had no trouble making my Huawei E3276 LTE dongle work. Now I'm trying to connect my ...
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18 views

Non Sudoer Access to a Kernel Module

Is it possible to access a kernel module if a user is not sudoer? I am trying to access a KVM, which is kernel module, as non-sudoer but I am getting an error: Could not access KVM kernel module: ...
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32 views

issues after cleaning out old kernels and system update resulting in latest update 3.13.0-30-generic

I just had an issue running system update (not enough space on /boot). So I found a solution on askubuntu suggesting that I free up space by deleting old kernels. So just to play it safe I only ...
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169 views

RTL8192su driver compatible with 14.04 running kernel 3.13

I need some help with some older wireless adapters working with Ubuntu 14.04 running kernel 3.13. Trying to install: Linux Driver RTL8192su - This driver supports RealTek rtl8192SU USB Wireless ...
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39 views

Installing linux-headers-2.6.32-042stab085.20

I am trying to install virtualbox-4.3 on a VPS hosting which has Ubuntu 12.04 and kernel version : uname -r ==> 2.6.32-042stab085.20 When I try to install it, I get the following error: ...
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55 views

I updated my kernel to the latest version but nothing happened. What's wrong?

I was trying to install the latest stable kernel 3.15 following the steps written on this webpage: http://ubuntuhandbook.org/index.php/2014/06/install-upgrade-linux-kernel-3-15/ I followed everything ...
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109 views

Bluetooth not working after upgrade ubuntu 14.04 kernel

Bluetooth not working after i upgrade my ubuntu kernel to 3.15.1 version.. there's a message when booting like "Bluetooth patch failed".. and "over-current condition on port x x" However, my ubuntu ...
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17 views

Adjusting high Resolution timer

I am running an old (2002) game server for an FPS. I have a slight issue with the the OS being "tickless". From what i understand the resolution timer is dynamic because of it and well it ends up ...
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18 views

Hotkey Fail After Suspend

Problem The hotkeys are Lenovo Thinkpad E440's Functions hotkeys (Fn+Any F). It works normally when PC turned on. It goes to a problem when I do sudo pm-suspend command. After suspended and resumed, ...
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17 views

rsp_write failed bad file descriptor

After downloading Terminal for Ubuntu 12 and typing terminal in the command line I receive rsp_write() failed: Bad file descriptor. A white bar and under it says FAILOVER #1. Not sure what to do from ...
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41 views

How to check Intel iGPU frequency on Linux?

I own Intel Haswell G3420. At stock its iGPU has 1,15 GHz turbo frequency. In my UEFI I overclocked the iGPU to 1,5 GHz and added voltage. However the framerates in both benchmarks and games are the ...
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29 views

rtc wakealarm could not work

Ubuntu Precise with 3.15 kernel (from kernel.ubuntu.com). RTC seems fine: % cat /proc/driver/rtc 14-06-18 - 15:05:39 rtc_time : 07:06:18 rtc_date : 2014-06-18 alrm_time : 07:08:41 alrm_date ...
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84 views

kworker/0:2 high cpu usage

I just install Ubuntu 14.04 on a brand new Toshiba Satellite and notice high usage of one of the cores on th cpu (over 95%), running a perf record I found this: 20,69% swapper ...
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11 views

Deadlock and starvation conditions

I have some question concerning deadlocks. I have understood, the issue that can occur when more threads or processes are in critical section becuase of shared memory, and the solutions can be ...
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45 views

Diagnose complete system hang 12.04 dell xps 13

I occasionally have a complete system hang on my Dell XPS 13 Developer Edition laptop (the one that comes with Ubuntu pre-installed). There's complete system unresponsiveness, CPU seems to go to 100% ...
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14 views

Live CD Boots from USB - System is 100% - Install Fails

I have an old Asus EePC 1005HA that I'd like to get a functional Ubuntu-based distro on -- ideally something later than the Netbook Remix versions 9 and 10, both of which run well on LiveCD and ...
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196 views

Need Help on wn-block (0 , 0) call trace

https://www.youtube.com/watch?v=BT-2lyfXfwM I am facing this same problem. When I was searching I found someone already uploaded this problem related video on youtube. I am trying to install ububtu ...