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

learn more… | top users | synonyms (4)

0
votes
0answers
5 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 ...
0
votes
0answers
13 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 ...
0
votes
0answers
6 views

Ubuntu 14.10 server locked after cleaning /boot

Ubuntu 14.10 server locked after cleaning /boot It has been working without any problems for several months. Yesterday came the message that there was no space in /boot. I used the following command ...
0
votes
0answers
10 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 ...
1
vote
0answers
33 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 ...
1
vote
1answer
68 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
votes
1answer
33 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 ...
0
votes
0answers
37 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
votes
1answer
75 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
votes
1answer
29 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?
0
votes
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? ...
0
votes
0answers
33 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
vote
1answer
11 views

In Kernel 3.18, vidioc_g_fmt_type_private is missing from v4l2-ioctl.h

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
0
votes
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 ...
1
vote
0answers
47 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 ...
1
vote
1answer
23 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 ...
0
votes
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 ...
-1
votes
0answers
29 views

VMware and kernel 4.0 [on hold]

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?
-1
votes
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 ...
2
votes
1answer
28 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
votes
0answers
9 views

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

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
votes
0answers
69 views

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

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
votes
0answers
21 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
votes
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 ...
0
votes
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
votes
1answer
48 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
votes
1answer
48 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
46 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 ...
1
vote
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?
1
vote
0answers
92 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
votes
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 ...
0
votes
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
vote
0answers
34 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
37 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 ...
0
votes
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?
0
votes
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 ...
1
vote
2answers
70 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 ...
0
votes
0answers
51 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
votes
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
votes
1answer
99 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
vote
1answer
50 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
votes
1answer
167 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 ...
30
votes
4answers
3k views

Why is it unsafe to delete old kernels?

I have run out of space on my boot drive, so I decided to remove old kernels. I found this page which describes exactly what I should do: Lubuntu Documentation: Remove Old Kernels. I have deleted the ...
0
votes
1answer
71 views

How to upgrade the kernel correctly?

Running uname -r in a terminal gives an output saying 3.13.0-37-generic, but I am trying to upgrade the kernel to 3.16, and indeed I have ran sudo aptitude safe-upgrade which installed ...
0
votes
2answers
119 views

After every kernel update I reinstall the Nvidia drivers and lose the Unity bar

After each kernel update, after the reboot I don’t get anything on screen, therefore I switch to the console (Ctrl+Alt+F1) and reinstall the Nvidia drivers, then I reboot but I don’t get any Unity ...
1
vote
0answers
57 views

Deleting old kernel modules manually

Basically I like to have a "clean" system; so I run the ubuntu-tweak janitor from time to time to delete the old kernels. Today I did some manual checking and found the subdirectory 3.13.0-49-generic ...
1
vote
0answers
57 views

BGRT Errors on boot - Custom compiled kernel 3.19.3

After compiling my own kernel (yes, I know I'm not entitled to any support), I receive this message on boot: [ 0.077204] Ignoring BGRT: invalid status 0 (expected 1) It disappears after a few ...
1
vote
0answers
43 views

Dell e7440, sleep sometimes fails, kernel logs show ACPI errors

I have a new Dell Latitude E7440 with Ubuntu 14.04.2. Sometimes (but not always), after sleeping, I cannot resume, as after trying to resume one of the following happens: I can move the mouse but ...
0
votes
0answers
19 views

Not able to configure bluetooth wireless earphones w/3.11.0-12-generic kernel

Greeting Linux Debug Demigods, Just confiscated a really slick pair of Bluetooth wireless earplugs. I finally realized my machine does not include Bluetooth hardware, and so tracked down, and plugged ...