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

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2
votes
1answer
2k views

Will Leap Second 2015 affect our servers?

We are using Ubuntu 12.04 and ubuntu 14.04 servers. These servers using default time settings and we have not installed ntp in these servers. Ubuntu 14.04 root@ubuntu14:~# uname -a Linux ubuntu14 ...
4
votes
3answers
981 views

“Failed to build vmnet” for kernel 3.19

Because this answer is only for kernel 3.13, so I'd like to share a solution for the problem Failed to build vmnet for kernel 3.19 and earlier versions. Thus this is not my actual problem and is only ...
-1
votes
1answer
23 views

How to to fetch kernel errors in Ubuntu..?

I a trying to make an alert e-mail system using Perl Script, when a kernel error occurs in a server. How can I fetch serious error logs from the kernel? Logs can be seen in /var/log/kern.log The ...
0
votes
0answers
6 views

How to get out of grub after failed update, WITHOUT a cd reader

I tried to install the new version of ubuntu. It took a long time and i let it go on while i slept. When i woke up there was a black screen with commands saying something about the battery. I tried ...
0
votes
0answers
26 views

Ubuntu 14.04 Kernel 4.1.0devel install panic

I am trying to install kernel 4.1.0devel on Ubuntu 14.04. Machine works fine for default kernel 3.16.0-30-generic. I did the following for compiling and installing the kernel: download the source ...
0
votes
1answer
32 views

Access Encrypted Home Folder

Something happened to my laptop recently and whenever I booted it up, it freezes and my cap locks button blinks. I did a little googling on this and it appears that it is caused due to a kernel panic. ...
0
votes
3answers
39 views

Old kernel version still running after several updates

Currently running 3.11.0-18, but many other later versions are installed. For some reason the updates aren't getting selected for grub: $ uname -r 3.11.0-18-generic Listing kernels: $ sudo ...
0
votes
0answers
11 views

Rebuild only kernel image without modules

i want to rebuild the running kernel with a very simple change (suppose only a printk). I would avoid to rebuild all modules, and simply update kernel image in /boot. Here my steps: $ sudo apt-get ...
0
votes
0answers
18 views

Load newer Kernel module over older build in one on start

I am using the Intel 82579LM network card, for which there is a newer driver available on the Intel driver site. Installing the driver is no problem and after manually removing the kernel module from ...
5
votes
2answers
2k views

Ubuntu 15.04 kernel version

I recently upgrade from 14.10 to ubuntu 15.04 and I was expected also the kernel to be upgraded from 3.16 to 3.19, but this wasn't happened! Why this problem? can I do manually upgrade of kernel? ...
0
votes
0answers
22 views

Error after installing new kernel

After installing a new kernel virtual box stoped working and all the solutions to try to fix it return the error. Errors were encountered while processing: linux-image-3.13.0-55-generic ...
1
vote
0answers
10 views

Reinstall an official package when custom one has overwritten it

I recently installed the Debian packages produced by running make deb-pkg to compile my own version of the Ubuntu kernel. I had given the kernel the release version 3.19.0-21-secure. All of the ...
0
votes
1answer
21 views

Cannot Get VMWare workstation to run in Ubuntu 15.04

Hi all Below is a link to the pastebin that contains the tail of the error log produced by VMware Workstation 11. Questions related to this topic are for Specific versions previous versions of linux. ...
1
vote
1answer
51 views

MPTCP installation and configuration on Ubuntu 14.04.2 LTS

I'm trying to install MPTCP (Multipath TCP) on my Ubuntu but I have a problem : I follow instructions under this link : http://multipath-tcp.org/pmwiki.php/Users/AptRepository I have no problem on ...
0
votes
2answers
96 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 ...
2
votes
1answer
142 views

rtl8192eu driver does not work

since the kernel upgrade to 4.0.1, because I had a version 3.1x, when you update the driver rtl8192eu not work for me, I get the following error make [1]: [_module_ / home / kevin / Desktop / ...
1
vote
1answer
31 views

Kernel source package for 3.16 in Ubuntu 14.04.2

I installed Ubuntu 14.04.2 with kernel 3.16.0-41. I was looking for the kernel source but the kernel-source metapackage is pointing at 3.13 and I can't see any source packages refering to 3.16. What ...
2
votes
0answers
29 views

How to upgrade the kernel of Xubuntu 15.04 Live CD to latest 4.1/4.0.6 version?

I am trying to upgrade the kernel of Xubuntu 15.04 AMD64 live CD to the latest version available (4.1/4.0.6) so that I can try and install the same on hitherto unsupported hardware. I am using the ...
1
vote
3answers
4k views

Ubuntu 13.10, kernel 3.11 blank screen issue with hybrid graphics

On my HP Envy, which has both an Intel on-chip graphics card and an Nvidia Geforce: *-display UNCLAIMED description: 3D controller product: GK208M [GeForce GT 740M] vendor: NVIDIA ...
0
votes
0answers
30 views

14.04 64x “Kernel panic - not syncing: Attempted to kill init! exitcode 0x000000100”

After a power outage (unplanned shutdown), attempts to reboot Ubuntu Studio 14.04 are greeted with the subject line. Additional lines include; CPU: 7 PID 1 Comm: run-init Not tainted ...
1
vote
1answer
36 views

Not using newer kernel version - Any real problems with it?

I have been searching for the answer of this question, but I couldn't find. I know I can upgrade the kernel version to the newer one, but it seems that a lot of people had problems after installing ...
0
votes
1answer
13 views

Ubuntu 14.04Broadcomm 43142 wifi problem on HP p-011tx

Ubuntu 14.04 does not show wifi connection after new installation. Device is:HP p011tx Broadcomm 43142 802.11 adapter
1
vote
1answer
5k views

How can I revert to the previous kernel version w/out dependency issues?

Since ubuntu updated my install to 3.2.0-37-generic, my laptop fan constantly runs. I never had this issue with the previous kernel versions. To fix this problem, I would like to revert back to the ...
0
votes
0answers
35 views

Having an issue removing old Kernels

I've gotten myself into some sort of infinite loop. My boot partition is full and so I'm trying to delete old packages. When I try this is what I get: You might want to run 'apt-get -f install' to ...
0
votes
1answer
106 views

Virtualbox 4.3.26 dkms will not install properly on Linux kernel 4.1

Hello I have a Toshiba Portege r930 with 8 GB of RAM, 320 GB HDD, and core i3 processor running Ubuntu 15.04. On kernel 4.0.5 my Virtualbox dkms works fine and the virtul machines start up correctly ...
2
votes
2answers
2k views

14.04 Dpkg Found kernel: /memtest86+.bin issue

Hopefully I'm not violating any rules by opening new topic for the issue I've encountered. Trust me, I've tried browsing all over askubuntu and bunch of other sites, but none of offered solutions have ...
0
votes
0answers
10 views

During startup, why does my computer reboot before or shortly after the Desktop appears?

I think it may be a virus in the system area because I scanned the 'Home' folder with both ClamTk and Comodo with updated AV databases and found no culprit. But when I choose 'Advanced Options' from ...
2
votes
1answer
94 views

Remove upstart option from GRUB

For each Kernel I use with my 15.04 install I have three options in GRUB: normal (systemd) upstart recovery How can I remove the upstart option for all my Kernels?
2
votes
1answer
674 views

Why the kernel doesn't update automatically?

I have two servers running 12.04 LTS. #1 has upgraded to kernel 3.2.0-57. #2 is stuck on 3.2.0-34. #2 is getting all other package upgrades. BUT, the kernel is never upgraded. This is what I have ...
0
votes
1answer
48 views

Kernel upgrade lubuntu 14.04

How often does system upgrades the kernel? Should I do it manually? I have ubuntu 14.04.2 and it has kernel version 3.16, and lubuntu from minimal install 14.04.2 with kernel 3.13, so I wondered why ...
0
votes
0answers
19 views

Will not boot normally or into recovery

Newbie here. Yesterday I put Ubuntu onto my laptop. Most things were working fine, except the shutdown command would not power off the device. Today, it will not boot normally or into recovery. Normal ...
0
votes
0answers
11 views

Debugging 14.04 freeze with syslog

Since upgrading to 14.04 a few weeks back, I have been experiencing a problem wherein Ubuntu will freeze (i.e. the entire UI stops working, can't drop down runlevels, etc.), and the only solution is ...
0
votes
0answers
16 views

Linux Kernel and drivers [duplicate]

Does the kernel have every driver software built in or does it have to identify the platform it's running on and source the relevant drivers from the internet? The reason why I ask is that I have ...
2
votes
1answer
10k views

kernel panic-not syncing: VFS: unable to mount root fs on unknown block(0,2)

I'm so new to Linux and suddenly found the error message appear when i boot after i click install ubuntu Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,2)
1
vote
1answer
4k views

How can I troubleshoot why Ubuntu keeps crashing on my laptop?

I have a one year old Acer Aspire 4752G netbook running Kubuntu 12.04 LTS with all the latest distribution updates installed. It was previously running great until about a week ago when it suddenly ...
4
votes
2answers
14k views

AMD Catalyst Driver installer failing at DKMS

I am following these instructions to install the fglrx drivers. When I am running sudo sh amd-driver-12-6-x86_64.run it tells me fglrx is already installed; even though I ran the commands to remove ...
0
votes
1answer
30 views

Cannot login ubuntu 15.04

I've got a problem logging into my user from the graphical start screen. When I write my password there is som flicker and some error messages on the screen before it returns to login again.This ...
2
votes
1answer
126 views

Cleaning old kernels does not work

I am a new Ubuntu user, so please have patience. It all started when my /root partition became full. It was obviously too small and I will have to resize. I tried to remove kernels using Synaptic and ...
3
votes
2answers
925 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 ...
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] ...
0
votes
0answers
31 views

Regarding installation difficulties on a new Dell Inspiron 3451

I recently ordered a Dell Inspiron 3451 (see here and here), and after booting it up once with the pre-installed 14.04 I realized that I wanted to replace the Dell-laced version with a clean, vanilla ...
0
votes
0answers
37 views

Error using apt-get

Hi I am getting an error whenever I use using apt-get. For example, when I try sudo apt-get upgrade Reading package lists... Done Building dependency tree Reading state information... Done ...
1
vote
0answers
48 views

Linux Kernel acting weirdly

This probably is a bug, but I am not sure, that's why I'm posting this here. I am running Ubuntu 14.04 using Linux Kernel 3.13.0-55-generic on Dual Boot with Win 8.1 on a Lenovo Z510. Lately the ...
0
votes
1answer
56 views

Kernel update today didn't need password?

I'm here to ask about today's kernel update. Few days ago (June 15) I updated Ubuntu's kernel to 3.13.0-55. But strangely, today when I searched for updates, Ubuntu told me to install the same ...
0
votes
0answers
192 views

Docker daemon no longer start with kernel 3.19.0-21

On Tuesday this week, I received a Kernel update from 3.19.0-20 to 3.19.0-21 on my laptop (Latitude E6520). At reboot I had kernel panics, so I picked 3.19.0-20 from the boot menu and all was well for ...
0
votes
0answers
18 views

CPU usage becomes extremely high after opening laptop lid after upgrading to kernel 3.19

So I recently upgraded my kernel to 3.19, and now, whenever I close my laptop's lid and re-open it, the CPU usage will spike to ~75% on all four cores of my CPU. However, Activity Monitor doesn't list ...
10
votes
2answers
2k views

How to install a package that contains Ubuntu kernel debug symbols?

The default Ubuntu kernel -generic package doesn't seem to have symbols in it. I'm trying to avoid compile a kernel with debug info manually. Does Ubuntu provide a package with kernel debug symbols? ...
2
votes
1answer
3k views

Fastest way to reload graphics driver module?

I am trying to get my way around on graphics driver development, in this case for modifications on a DRM kernel module, called gma500_gfx. Every time when I have made a change to this driver, I start ...
2
votes
1answer
278 views

Upgraded to Ubuntu 15.04 from 14.10, got the dreaded “starting version 219” error

When I try to login, it reverts me to the login screen. If I move my mouse, it shows a log of system events and then does the same thing. I can Clrl + Alt + F1 to a terminal, and do modifications from ...
0
votes
0answers
122 views

Failed to start Load Kernel Modules after Nvidia 352.21 installation failure

After booting up Ubuntu 15.04 I get the following message: [FAILED] Failed to start Load Kernel Modules. See "systemctl status systemd-modules-load.service" for details. At terminal I get the ...