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

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when installing 15.04 kernel 3.19.6 will it override version 4.0 kernel

I am about to to upgrade from 14.10 to 15.04 and will it override the 4.0 kernel
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1answer
10 views

Laptop Screen Flashing

i own a hp dv6-3080br laptop and its always been a pain in the ass to use with linux, the most stable system i could get running on it was ubuntu 14.04 with kernel 3.13. i recently updated it to 14.10 ...
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19 views

Error while configuring kernel

When I run this command: update-initramfs -c -k 2.6.35-aniq+ I get an error: update-initramfs: Generating /boot/initrd.img-2.6.35-aniq+ Cannot find /lib/modules/2.6.35-aniq+ update-initramfs: ...
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2answers
19 views

Side-effect on upgrading kernel from generic to low-latency?

I am using Ubuntu 14.04 in embedded And I want to change Linux generic-kernel to Linux low-latency-kernel. But i think if i change the kernel, some programs already installed and devices(for example ...
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0answers
20 views

How to apply a kernel patch?

I am running in to the following dmesg with bumblebee: [ 420.238108] vgaarb: this pci device is not a vga device The same issue has been discussed here The workaround suggested is to apply this ...
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0answers
15 views

What might cause “version 'KERNEL_VERSION' has bad syntax: version number does not start with digit” during update-initramfs -u

When I run sudo update-initramfs -u I get the error output dpkg: warning: version 'KERNEL_VERSION' has bad syntax: version number does not start with digit update-initramfs: Generating ...
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0answers
12 views

busybox error while start up

busy box error, due which couldn't able to start up my system.. please help me out to slove this. I tried both advanced and normal mode, but couldn't resolve the problem...busybox v1.22.1 is showing ...
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0answers
65 views

Ubuntu 15.04 hang when boot virtualbox Centos 6

I have a freshly ubuntu 15.04 64 bit. A virtual box 4.3.26 r98988. And this image http://repo.scalefactory.com/vagrant/centos-6-x86_64-20.box Now everytime I try to boot the VM, my laptop hang. Here ...
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0answers
15 views

Need advice about Linux I/O user space API

I work with the SCST SCSI target subsystem now, and I was asked to compare this subsystem (which is not a part of the kernel) with kernel SCSI subsystem LIO (mostly performance). So, I'm going to ...
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0answers
7 views

Ubuntu 14.10 server locked after cleaning /boot

My Ubuntu 14.10 server locked after cleaning /boot. It has been working without any problems for several months, but yesterday I received an error message saying that there was no space on /boot. I ...
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0answers
17 views

Absent frontend0 with USB DVBSky S960/S860 - driver bug?

I was pleased to upgrade, today, to Ubuntu 15.04 and to get a 3.19 kernel because the Linux TV Wiki suggests that, from kernel version 3.18 onwards, my "Mystique SaTiX-S2 Sky V2 USB (DVBSKY S960 ...
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0answers
56 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 ...
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1answer
111 views

Ubuntu 15.04 USB devices powered off at encrypted root password prompt

Since my update from Ubuntu 14.04 -> 14.10 -> 15.04 it sems that i cannot boot my system anymore as i am stuck at the password prompt when ubuntu appempts to mount my encrypted root partition. The ...
0
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1answer
36 views

What is the difference between kernel 3.16 and 3.18?

It is appreciated to keep the release date of 15.04. The update from 14.10 to 15.04 has been processed successfully. It is found that the main homepage of Ubuntu is changed, which is more attractive ...
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0answers
45 views

System problem and should I uninstall Vivid kernel 4.0 from Trusty?

Last night, I suspended Ubuntu. This morning when I tried to wake it up by lifting my laptop top, it failed as the "sleep" led indicator changes from on to off and the "Power on" led indicator tilted ...
5
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1answer
78 views

Can't boot to Ubuntu, after messing with GRUB file

I use Ubuntu 14.04 (alone, no dual boot) and today it installed a new kernel (3.13.0-49). For some reason, it did not work well with my system, the mouse did not respond, and neither did my network. ...
0
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1answer
31 views

How can I remove the old kernels [duplicate]

I have upgraded my OS version a few times. What is the best way to remove the old kernels and free space?
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0answers
15 views

Why doesn't my nvidia driver module get aliased to just 'nvidia'

I have nvidia-346, nvidia-346-dev and nvidia-346-uvm installed (on my Kubuntu 14.04). For some reason, the modprobe.d file this installation create does not alias 'nvidia-346' as just 'nvidia'. Why? ...
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0answers
34 views

Ubuntu Crashed & can't reinstall from USB

When I tried to log in to Ubuntu 14.04 after it was in sleep mode, the cursor freezed so I restarted using the command: sudo reboot But whenever I try to log in again, I get a Black screen. I ...
1
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1answer
11 views

In Kernel 3.18, vidioc_g_fmt_type_private is missing from v4l2-ioctl.h [on hold]

Kernel version 3.18 doesn't have vidioc_g_fmt_type_private defined v4l2-ioctl.h, Could someone please let me know the replcement call for this? Thanks, Mahesh
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0answers
15 views

How to change the Delayed Acknowledgement timer? (14.04)

I am trying to set different values for the timer of the Delayed Acknowledgement and see the different behaviors at packet level. I expected this to be a kernel level option but I can't locate ...
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0answers
50 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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1answer
27 views

Does firmware depend on OS and architecture?

I learned that firmware of a device runs in the device. So does firmware of a device not depends on the computer architecture and the OS kernel? (I know that a driver of a device depends on arch and ...
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0answers
33 views

Will I get update on both kernel and application, on my Ubuntu 14.04 with kernel 4.0?

I installed 64bit generic kernel 4.0 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/, on Trusty (i.e. Ubuntu 14.04), following ...
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0answers
39 views

VMware and kernel 4.0 [closed]

I'm trying to install VMware in Elementary OS freya updated with kernel 4.0 but it doesn't start. The error suggests incompatibility with kernel 4.0. How can I solve this?
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1answer
24 views

Install linux package in iso into ubuntu [duplicate]

here I want to ask, I am familiar with ubuntu, with unity, shortcuts, etc. I have learned about Kali linux, I have installed Kali linux in my PC but I am not familiar with the environment, I've had ...
3
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1answer
38 views

How long after release will the last LTS get a HWE kernel?

The Vivid release is just around the corner so as a 14.04 user I'm curious to know when there'll be a supported kernel upgrade available. I have several machines running on Utopic's kernel and I'll ...
0
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0answers
9 views

How do I use performance counters inside of the kernel? [closed]

I want to access performance counters inside the kernel. I found many ways to use performance counters in user space, but can you tell me some way to use those in kernel space. Please don't specify ...
0
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0answers
94 views

okay to install the latest kernel for Vivid on Trusty? [closed]

I installed 64bit generic kernel 4.0 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.0-vivid/, on Trusty (i.e. Ubuntu 14.04), following ...
0
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0answers
25 views

kernel mismatch after upgrading from 12.04 to 14.04?

I just upgraded my 12.04 to 14.04. After that I wanted to install the kernel headers (required to run vmware client). $ sudo apt-get install linux-headers-generic The command eventually fails: $ ...
0
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1answer
29 views

Installed new kernel on Ubuntu 12.04. How do I start it?

I installed linux-image-3.12.24-031224-generic on Ubuntu 12.04 but cannot find a way to start it. uname -r still says 3.2.0-80-generic. $ dpkg -l | grep linux-image ii ...
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0answers
28 views

Kernel error when trying to install Ubuntu alongside Windows 8.1

Why does this kernel error appear when I'm trying to install Ubuntu alongside Windows 8.1? And what can I do about it? Kernel Offset: 0x0 from 0xffffffff81000000 relocation range....... --[ end ...
0
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1answer
50 views

why does /proc/cpuinfo show a single processor on the BQ Aquaris phone?

phablet@ubuntu-phablet:~$ cat /proc/cpuinfo Processor : ARMv7 Processor rev 3 (v7l) processor : 0 BogoMIPS : 2072.57 Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls ...
0
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1answer
56 views

Broken link for kernel (nonexistent future version)

My version (from lsb_release -a): No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 14.10 Release: 14.10 Codename: utopic I want to make some room ...
3
votes
1answer
48 views

Roll back kernel

I recently upgraded my kernel version to 3.19.3 and most of the stuff is not working (eg. Wireless, installing b43 doesn't help too, fglrx etc.) which seemed to work beautifully before , how can I ...
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0answers
19 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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0answers
134 views

Ubuntu 15.04 Vivid network-manager causes kernel panic on Lenovo G505s [closed]

I had Ubuntu 14.10 installed on my Lenovo G505s and I upgraded to Ubuntu 15.04 in February this year (to the beta release). A few weeks ago, I updated my installation with new packages. From that ...
11
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2answers
1k views

What does this 'apt-get remove' instruction do?

What does the following code do? I found it on internet so I copied it and pasted it into terminal but when I installed a new kernel it only detects the old one. sudo apt-get remove --purge $(dpkg ...
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0answers
10 views

U-Boot switch kernel on OMAP device

I build my own kernel for armel architecture, successfully installed it on my device, can see it in kernels list: dpkg --list | grep linux-image ii linux-image-2.6.33-500-omap ...
1
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0answers
37 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 ...
1
vote
1answer
39 views

What is the best config file for kernel compilation

I need to recompile the kernel and I'm not sure what config file is the best Should I use make oldconfig or make defconfig I need all the features and modules that are installed by default in a ...
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0answers
8 views

How to disable graphics card

Is it possible to disable one of my two graphics card as a grub parameter? And is it possible to disable both graphics cards?
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0answers
41 views

Apply a kernel patch [duplicate]

I wantet to ask how to apply the following two patches. https://lkml.org/lkml/2014/5/9/517 https://lkml.org/lkml/2013/5/30/513 I don't see any download for the patch files so how do I apply these two ...
1
vote
1answer
38 views

Do all currently supported Ubuntu releases have the same version of Linux kernel?

Do currently supported Ubuntu release (such as 12.04, 14.04, 14.10, 15.04) have the same versions of Linux Kernel? Or older Ubuntu releases may not have as recent Linux kernel as newer Ubuntu ...
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2answers
72 views

Is it ok to update kernel to 3.19.3

I've got a lab assignment to compile linux kernel , so I wanted to ask if its safe to install latest kernel (3.19.3) on my current Ubuntu 14.04 , I've got important data on my laptop so I cant afford ...
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0answers
53 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 ...
0
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0answers
21 views

Need Ubuntu with real-time extensions and GLIBC >= v2.15

I have Debian Wheezy with an RTAI kernel but it has EGLIBC 2.13 and I need 2.15 or higher. I've tried compiling a kernel with PREEMPT-RT on Ubuntu 14.04 and latency is horrendous, so something didn't ...
0
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1answer
103 views

Ubuntu 14.04 freezes

I have Ubuntu 14.04. After having updated the system to kernel 3.13.0-49-generic, I re-booted and now everything freezes! I can not log in. (Keyboard and mouse do not work as well) I found this line ...
1
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1answer
52 views

Wifi Broadcam: ERROR (dkms apport) kernel not supported

m trying to install wifi driver for : Broadcom Corporation BCM4360 802.11ac Wireless Network Adapter [14e4:43a0] (rev 03) in my Macbook pro, but after following this answer (Setup problems ubuntu ...
0
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1answer
189 views

ath10k installation

I have exhausted google on how to do this, compounded by being a beginner. I am trying to install this module. I have a nice new Acer Nitro (which will be even nicer once I remove dependency on win ...