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

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Gave up waiting for root device-edited grub and even tried reinstall

After I upgraded the Ubuntu kernel from 3.8.0-29 generic to 3.16.2 i tried to reboot and got dropped to the busy box shell with an initramfs prompt exactly like this Gave up waiting for root device. ...
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15 views

How to recompile kernel in Ubuntu 14.04?

I wanted to recompile the kernel in my present working directory. I used the below command tar xjf /usr/src/linux-source-3.13.0.tar.bz2 as my current version is 3.13.0-32-generic, to unpack and ...
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1answer
22 views

Error while installing kernel from source

I get the following error when I try to compile kernel version 3.17.0-rc5: Error! Bad return status for module build on kernel: 3.17.0-rc5+ (x86_64) Why do I get this error and what does it mean? ...
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23 views

Search previous Kernels for specific driver since removed [on hold]

I have a Sony Handycam DCR-TRV460 which under 32bit Windows XP (alone) supports USB streaming. From what I have been able to determine, after exhaustively searching and Googling, is that there used to ...
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15 views

Ubuntu 14.04 Kernal Panic - kernel bug at /build/buildd/linux-3.13/kernel/timer.c:930!

This seems to happen intermittently, I can't seem to reproduce the it. It happens at least once a day for the last week or so. Quite frustrating! Screenshot I am unable to get a command line to take ...
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28 views

computer does not start

I'm using ubuntu 14.04.1 LTS and everything works fine from the day I installed it. Now when I am trying to start my computer, the screen is continuously stuck with so many messages like this: ...
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2answers
20 views

“'version' has bad syntax” error when attemping update-initramfs with -k version

I want to run the following command : sudo update-initramfs -u -k version , but i get the following error message update-initramfs: Generating /boot/initrd.img-version dpkg: warning: version ...
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6 views

When building kernel dbg package with ubuntu kernel repo, got this error “Can't read private key”

When building kernel dbg package with ubuntu kernel repo, got this error: make[1]: Leaving directory `/git/nsx-thirdparty/linux-3.14.17' # Add .gnu_debuglink sections to each stripped .ko # pointing ...
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1answer
36 views

Unable to install any ubuntu version on my old computer

I have Intel core2duo processor on a Intel G31PR motherboard, 1GB RAM a brand new WD 1 TeraByte hard disk. I am trying to install Ubuntu on my hard drive. But unfortunately, I am getting errors and ...
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1answer
125 views

How to install 'cdfs' kernel module?

I am unable copy files from 'mpegav' within video CDs in my Ubuntu 14.04. After a extended search now I understand I need to mount the cd using 'cdfs': sudo mount -t cdfs -o ro /dev/sr0 ...
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1answer
13 views

kernel / initd boot settings

I have 2 seperate harddrives in my pc, one with windows 7 (working) and one with ubuntu. I am unable to boot into ubuntu for some reason :/ I installed easyBCD to correct the windows bootmenu and used ...
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20 views

Some USB ports aren't enabled

I am using Ubuntu 14.04. My computer has an AMD FX-8350 Vishera 4.0 GHz Octal-Core AM3+ processor. My computer has 8 USB ports, but only two of them are active. The processor in the boot enables all ...
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1answer
26 views

Ubuntu Server compiling kernel modules

I am trying to compile paragon ntfs driver http://www.paragon-software.com/home/ntfs-linux-per/screenshots.html and got “no symbol version for module_layout" error when modprobe loading modules. ...
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2answers
37 views

Unable to download the source code of linux that I am running

On my machine: root@zaidi:/home/uzair# uname -r 3.13.0-35-generic Also: root@zaidi:/usr/src# ls linux-headers-3.11.0-15 linux-headers-3.11.0-23-generic linux-headers-3.11.0-15-generic ...
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24 views

Reporting a subtle bug in Ubuntu 14.04 kernel

Note: I have filed this bug on Launchpad and can be seen at https://bugs.launchpad.net/ubuntu/+bug/1369374. I am reporting it here as well hoping to find a workaround. I have reasonably good ...
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24 views

1.5GB RAM with Pentium 4 for Ubuntu 14.04 LTS [duplicate]

I have an old desktop with 1.5GB RAM and Pentium 4? Would Ubuntu 14.04 work fine or i need to downgrade to xubuntu or lubuntu? It would be fine per the hardware requirements specs for 14.04 but was ...
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1answer
60 views

Acer Aspire wifi on Broadcom b43 not working

ck, including userspace. [ 79.694480] [drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI -> DRM/Intel [ 79.694486] [drm] drm/i915 developers can then reassign to the right ...
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22 views

kernel 3.16 update with BF Scheduler

I use an old asus eee pc, and try to boost it up. Actually I use the mainline-kernel 3.16 and found out there is a bfs-patch from http://users.on.net/~ckolivas/kernel/ I want to try BFS instead of ...
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66 views

Serial Port not Working on 14.04 LTS Desktop

System Spec : Ubuntu 14.04 LTS Desktop x64 on Dell Optiplex 3020. I am interfacing a VoIP card (TI Manufactured) which can be connected to PC by using serial port(RS 232). Can't Provide More Info on ...
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2answers
45 views

Upgrade Ubuntu LTS to a Version that supports MacBook retina

I have Ubuntu LTS 14.04 with Gnome 3 as GUI installed on my MacBook ( it's a persent ) and some things don not work very well. Like Chromium is eye hurting small and my thunderbold interfaces do not ...
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2answers
76 views

List all kernel settings to get details about installed devices

How can I find out with which settings my kernel was compiled? I would like to understand the concept behind this. I wonder how I can find out which device uses which module. For example: right now, ...
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9 views

Error: you need to load the kernel first [duplicate]

Please help me. I accidentally deleted my grub partition when trying to reinstall Ubuntu 14.10. I have a bootable USB and working windows 8.1 on my computer. I'm stuck in a command line version of ...
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1answer
23 views

How to unload a kernel module which is in use?

I'm following this tutorial to get my card reader working: http://ubuntuforums.org/showthread.php?t=636867 However I'm unable unload my sdhci module: sudo modprobe -rv sdhci mmc_core mmc_block ...
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1answer
74 views

Btrfs subvolume @home not mounted kernel upgrade 3.17

i'm having trouble upgrading my kernel to the latest 3.17 rc3 mainline kernel. I'm currently on a patched kernel 3.13 for my Acer chromebook c720p, the 3.17 kernel would give me support for touchpad ...
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17 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 ...
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2answers
82 views

How to install needed Qt packages to build kernel on 14.04?

I'm going to compile kernel on Ubuntu 14.04 64-bit, so I start with installing packages that I need: sudo apt-get install build-essential bin86 kernel-package libqt3-headers libqt3-mt-dev wget ...
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81 views

Ubuntu 14.04 kernel update

I have a problem with updating the kernel on ubuntu 14.04, the system detects the updates and the latest version is installed, and unfortunately when I start ubuntu I always find the old version or ...
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1answer
47 views

Which more can I remove from my /boot in order to get space?

I'm using ubuntu (3.13.0-34). I installed it, left 300M for boot, but seems that it was not enough anymore. I follow some instructions here and removed all older kernels from it. /dev/sda6 277M ...
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15 views

Ubuntu crash. Maybe “mtrr”?

I've a problem with Ubuntu 14.04. It block. The "capslock", and "numlock" doesn't work. I must do a reset (with the button). The mouse don't move anymore. I've desactivate "zram" now. Here a part of ...
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Since updating to Ubuntu 14.04 computer crashes every time I load anything higher than linux 3.13.0-26-generic

I recently upgraded from 13.10 to 14.04 LTS. Now if I try and load a linux kernel higher than 3.13.0-26-generic the computer crashes and reboots. I have tried to reinstall 14.04 LTS from CD but this ...
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Could you advise which ubuntu kernel git repo contains kernel 3.14.17?

Could you advise which ubuntu kernel git repo contains kernel 3.14.17?
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Ubuntu Sony Vaio VPCZ 133

I tried to install Ubuntu 14.04 on my sony vaio vpcz 133. It freezes after login into the system. So I go back and install the 12.04, works great. I'm planning to install the laptop mode tools on it. ...
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how to get the uboot log file of pandaboard?

i'm using ubuntu12.04 with 64 bit.I'm doing my project on Pandaboard ES.I flashed the MLO ,U-boot.bin to sdcard.It is working properly. But i want to take the log file for booting sequence.Is there ...
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42 views

Is it safe to install kernel 3.6 on ubuntu 14.04

This question might sound stupid but pardon me as i'm still new to linux..but i've been having some problems with my Railink RT3290 Wireless driver and i'm running kubuntu 14.04.i've tried so many ...
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55 views

how ubuntu handles sd card remove from usb card reader

I am looking for some technical information. I have USB SD card reader connected to Ubuntu machine. when i connect sd card to USB card reader, "add" event is triggered and i can see sd card is ...
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20 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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76 views

elantech touchpad - multi touch is not working for kernel 3.13.0-35-generic

I recently updated my kernel to 3.13.0-35-generic,after update my elantech touchpad multi touch stopped working I tried fixing it from here ...
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16 views

How to debug NIC failure?

I'm experiencing failure of an ASIX AX88179 NIC inside a USB 3.0 3 ports hub plugged into USB 3.0 port of a Lenovo IdeaPad Z500. The PC has another NIC which is not used while the failing device is in ...
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2answers
22 views

apt get upgrade third party modules and manually installed packages doubt

I'm wonder what will happen to manually installed packages and kernel modules (third party ones) when doing an sudo apt-get upgrade.
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1answer
35 views

Setting up lubuntu to access /usr/src/linux-headers-3.1.x.xx?

I need to access a block of memory assigned by a FPGA to a PLX chip. Now I dont think that will be to much of a problem accept when I try and use the /include/linux headers they seem to be somewhat ...
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0answers
10 views

Get notified on process close

We have a driver which keeps some objects on a per process basis. These objects need to be cleaned and freed when those processes close. Is there a way to get notified (in a kernel driver) of those ...
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1answer
37 views

Clean install of 14.04 gives endless “Wrong Mac address”

I booted my laptop with a USB with Ubuntu 14.04, and verified that 14.04 is working fine, and my internal drive is intact and working. Then I hit install. The install program worked the first couple ...
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12 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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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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1answer
116 views

BCM4352 offical dell driver installation problem

I've downloaded dell ubuntu 12.04 drivers and un-tar the package. Then enter the approprite folder to install as specified in first and one answer this question. First i've installed it with double ...
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2answers
208 views

How do I re-run boot loader?

Running sudo apt-get -f install said that The link /vmlinuz.old is a damaged link and: you may need to re-run your boot loader[grub] Here's the full output: user@chrubuntu:~$ sudo apt-get -f ...
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34 views

USB device fails to enumerate using xHCI

I'm trying to connect a ARM development board (precisely a Nucleo Board F401RE) through a USB port but, mostly, it fails to enumerate and I get these messages using dmesg [ 4788.675352] hub 3-0:1.0: ...
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1answer
64 views

using packagemanager to uninstall latest kernel?

The last update (I updated 9/1/14) to the kernel broke my boot. I was able to boot into the previous kernel. I think the version that was stable was 3.13.0.34.40 and the update was 3.13.0.35.42--Is ...
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1answer
43 views

update-grub ignores GRUB_CMDLINE_LINUX in /etc/default/grub when generating menu.lst

I created /etc/default/grub with the contents GRUB_CMDLINE_LINUX="cgroup_enable=memory swapaccount=1". When I run update-grub, I expect these additional arguments to be appended to the kernel lines in ...
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41 views

How can I load modules from /etc/modules before mounting local file systems?

I have modified /etc/fstab to mount a file system that requires a custom module. On two out of three systems, all running Ubuntu 14.04, I can simply add the module to /etc/modules and it will mount ...