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

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2answers
4k views

14.10: VirtualBox “No suitable module for running kernel found”, Cannot Find Kernel Source

After the 14.10 update to VirtualBox, I can no longer run my boxes. Of note, running sudo service virtualbox status returns VirtualBox kernel module is not loaded and running sudo service virtualbox ...
0
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0answers
14 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 ...
5
votes
1answer
5k views

Boot Error - ACPI PCC Probe Failed

ACPI PCC Probe Failed is the error that pops up instead of the default GRUB loader after I updated my kernel to 3.19. I searched around and couldn't find much information except that it is a known ...
0
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0answers
9 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 ...
0
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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 ...
1
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0answers
25 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
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0answers
14 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 ...
2
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2answers
668 views

VMWare Player 7.1.0 on Ubuntu 15.04 (kernel: 3.19.0-10-generic) app loading

I downloaded the latest version of the VMWare player (v 7.1.0) from here. Installed the bundle, and the installation went through fine. Post-installation, when I tried to launch VMWare Player, but ...
0
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1answer
173 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 ...
2
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2answers
13k views

How to install (or troubleshoot) a USB 3.0 AX88179 Gigabit Ethernet adapter?

I have a USB 3.0 AX88179 based Gigabit Ethernet adapter and after searching online, I found many people reporting success with this device under Linux. The driver entered the mainline kernel on ...
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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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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
87 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 ...
12
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14answers
33k views

Virtualbox Kernel driver not installed

I tried to use my Virtual Box and this is the error I received - (I just updated to the new Ubuntu also) and I am VERY new at this Linux OS. Kernel driver not installed (rc=-1908) The ...
1
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0answers
36 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 ...
0
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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 ...
5
votes
1answer
76 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
22 views

Ubuntu Touch Kernel Config [easy question]

I'm in the process of porting Ubuntu touch. Based on the porting guide, https://developer.ubuntu.com/en/start/ubuntu-for-devices/porting-new-device/#anchor4 I would like to know which kernel is it ...
0
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0answers
41 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 ...
3
votes
2answers
359 views

Problem installing Broadcom BCM43142 on HP Pavilion 15-p073TX NB PC

I know this sounds similar but my problem is unique. I have a new HP Pavilion 15-p073TX NB PC. Recently I installed Ubuntu 14.04.2 but was not able to start WIFI. I searched a bit and got some answers ...
13
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2answers
36k views

How to blacklist kernel modules?

How do I disable loading of unnecessary kernel modules. Kernel 3.2.4
1
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0answers
48 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 ...
0
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1answer
30 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
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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? ...
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
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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 ...
53
votes
6answers
7k views

How is 'rm -rf /' able to delete all files in the system?

I haven't tried this command on Ubuntu (for obvious reasons) so I am not sure if Ubuntu will allow its execution. But it's famous for deleting everything. Just out of curiosity, what happens when the ...
1
vote
1answer
26 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
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0answers
30 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
30 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 ...
1
vote
1answer
44 views

Undetected Screen on my laptop since kenel 3.13.0-45

In Kubuntu 14.04 LTS, since kernel update 3.13.0-45, the laptop display remains black after boot. The system is running (I can fully access it via rsh) and the graphic card also (for external ...
0
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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
78 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
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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
votes
1answer
42 views

Installation Error :(

I tried Ubuntu 14.10 (64 & 32 Bit) & Ubuntu 12.10 (64 & 32 Bit) I get this error every time I select & entered "Install Ubuntu" I am installing Ubuntu using a USB [21.317787] Kernel ...
0
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0answers
22 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 ...
2
votes
3answers
3k views

Ubuntu 13.04 installation issues: unable to handle kernel paging request error

I wish I could say that I’ve done more for the Linux community as of recent but I am very VERY new to all of this and I feel very much in over my head. I figured I would install Ubuntu. on my computer ...
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
50 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 ...
32
votes
3answers
16k views

Should I upgrade to the “mainline” kernels?

Newer "mainline" versions of the kernel are available from the Ubuntu kernel team, e.g. 3.4 and 3.5, while Ubuntu 12.04 is on 3.2. What are the mainline kernels? Are they better than my existing ...
7
votes
3answers
2k views

How do I modify “/sys/kernel/mm/transparent_hugepage/enabled”

I use mongodb 3.0 and I find a warning: MongoDB shell version: 3.0.0 connecting to: test Server has startup warnings: 2015-03-13T16:28:29.405+0800 I CONTROL [initandlisten] ...
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 ...
2
votes
1answer
128 views

How to disable Lazy Preempt in kernel

I'm relatively new to Linux and working on getting a real-time kernel up and running for robot applications. I'm on Ubuntu 14.04, using kernel 3.14.3 and the 3.14.3-rt5 real-time patch. Also using ...
12
votes
1answer
575 views

USB sticks not accessible & system hangs at shut-down: related to older hardware?

Please notice the three updates at the end of the post. Original problem I installed Lubuntu 14.04.1 on an older Acer Travelmate 4500 using the forcepae option and adjusting upowerd.py according to ...
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 ...
3
votes
2answers
4k views

Why do I get disk I/O errors booting the 3.2 kernel on a xen vps server?

I have a xen vps, which I just upgraded to the new LTS 12 Precise Pangolin. However, I see this error on booting: [ 12.848076] end_request: I/O error, dev xvda, sector 12841 [ 12.848093] ...
1
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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?