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

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Difference between linux kernel and Ubuntu mainline kernel [duplicate]

As this wiki Ubuntu page says: By definition the mainline kernel builds are made from virgin unaltered mainline kernel sources and therefore do not, and should not, include any Ubuntu patches ...
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0answers
12 views

Access to hard-drive when machine won't boot

Recently I tried to downgrade my kernel (from 3.13 to 2.6.24), and I made sure that the 2.6.24 kernel compiled and installed without any errors. I also updated the grub file to boot with the newly ...
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1answer
24 views

how to use a kernel patch?

I have a problem with my sound card and there is a patch on git that seem to repair my problem. here the patch But I don't know how to use patch. Someone can help me? edit :I saw that how to build ...
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1answer
213 views

How to remove new kernel and make older default (16.04)

I upgraded my kernel to version 4.4.8 in an attempt to enable suspend/hybernate, but in turn it decreased the battery life. So i want to either a. delete je 4.4.8 and revert to 4.4.0 kernel in my ...
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2answers
136 views

How to set previous kernel as default in GRUB (Grub customizer)

Can you guys please help me use Grub Customizer to set an older version of the kernel 4.4.0 of Ubuntu 16.04 LTS as default when booting? I'm not using a dual boot system, and I have installed 4.4.8 ...
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1answer
252 views

Upgrading to 4.6.0-rc6 kernel fixed my flickering screen issue but now WiFi doesn't work (Dell XPS 13)

I have a 2016 Dell XPS 13 (FullHD display, i5 version). It has a Broadcom wifi module (BCM4350) which you might know has pretty terrible Linux support. However, it is supported by the Linux kernel ...
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0answers
306 views

Battery life reduced after upgrade to kernel 4.4.8 (16.04 LTS)

UPDATE: I have elaborated more on the problem in another post. Read it here. EDIT: Upgrading to 4.5.2 stable does the same thing. Is it the AMDGPU using more resources? How can I disable, I care more ...
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0answers
29 views

Kernel Panic while attempting to Install Lubuntu 15

In order to revive my old desktop PC, I chose Lubuntu as my next working environment. If i give preference to CD boot onto BIOS (usb not supported), it would fail. Nevertheless, I managed to boot ...
9
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1answer
81 views

How to ensure user separation on an old school shell server

I want to run an old school shell server for a couple of people, ie. one where users get ssh access so they can run software (their own or provided). My concern is appropriate separation between users....
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1answer
88 views

Errors while compile a kernel for an android device

I hope you have a nice day, I'm new with this, just searched and searched about my situation but no answer, about 40 thread here and here no one helped me, so I am feeling shy to ask you this ...
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0answers
21 views

packages have been kept back [duplicate]

When I run apt-get upgrade, I am presented with: The following packages have been kept back: apache2 apache2-bin apache2-data linux-cloud-tools-generic-lts-wily linux-cloud-tools-virtual-lts-...
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1answer
260 views

Kernel panic on boot after fresh install of 16.04

I had Ubuntu 15.10 running fine on my Thinkpad x200. The live USB of 16.04 runs fine, ran a check on it's files - checks out ok. Told the installer to format the ext4 drive and install 16.04 from ...
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1answer
17 views

Does manual kernel update affect the next regular automatic update?

I installed the kernel 4.4.8 manually from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.4.8-wily/ to circumvent a bug. Now I wonder what will happen when this kernel gets officially distributed by ...
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0answers
162 views

Virtualbox doesn't work after upgrading to kernel 4.4

At the time of installation, it displayed the following message Setting up linux-image-generic-lts-xenial (4.4.0.21.11) ... Setting up linux-headers-4.4.0-21 (4.4.0-21.37~14.04.1) ... ...
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0answers
51 views

System Log warning “wrong connector dpms state” Dell Inspiron 1525

I just installed Ubuntu 14.04 on a Dell Inspiron 1525 laptop (Intel Celeron(R) CPU 540 @ 1.86GHz processor, Intel 965GM graphics, 64-bit OS, 4 GiB memory). I am not having any noticeable operating ...
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0answers
73 views

Broadcom BCM43142[14e4:4365] driver doesn't work with kernel 4.4

After getting this question question closed I installed kernel 4.4 and the problem of the wireless card on Ubuntu 14.04 installation still remains unsolved. Any suggestion?
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0answers
22 views

What is memmap and how do you use it?

I have a faulty memory with a consistent offset, and according to UnixSE, I could use memmap to solve this problem by having the kernel avoiding this certain offset via memmap: http://unix....
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0answers
36 views

Unsupported Linux Kernel on 14.04

While checking the support status on my Ubuntu Server, the currently used Kernel came up as unsupported: x@x:~⟫ ubuntu-support-status --show-unsupported [...] Unsupported: linux-headers-3.19.0-58 ...
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0answers
80 views

Potential Solution for ASUS X455LB Touchpad not working after Resume

I'll preface this by saying that I'm still fairly novice to using Linux but am really keen on using/learning it. I've been having troubles with Ubuntu (15.10 and now 16.04) lately after I installed ...
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0answers
51 views

Not enough free space on /boot to upgrade 14.04 - already cleared kernels, what else is here? [duplicate]

When software tries to update, I get a message that there's not enough disk space on /boot. I've got rid of old kernels and emptied trash, but there still isn't enough space. According to gparted, the ...
0
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1answer
156 views

After install xubuntu 16, starting gives errors

The installation procedure was completely successful, but starting the new OS brings a lot of errors and blocks. Here some of the messages I see: Starting init: /bin/sh exists but couldn't execute ...
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3answers
2k views

Why do I get “Required key not available” when install DKMS modules in Ubuntu 16.04?

When I try to install DKMS modules like VirtualBox, Nvidia, or Broadcom drivers, they do not install and I get Required key not available. How can I fix it?
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2answers
71 views

unable to install applications from software centre. Installation failing

installArchives() failed: perl: warning: Setting locale failed. perl: warning: Please check that your locale settings: LANGUAGE = (unset), LC_ALL = (unset), LANG = "en_IN.ISO8859-1" ...
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1answer
5k views

vmware error after upgrade to ubuntu 16.04

I just upgraded to ubuntu 16.04 and I started having problems with vmware (v 12.1.0 build-3272444). When I try to play the virtual machine I receive the following error: Could not open /dev/vmmon: No ...
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0answers
275 views

Kernel Panic when setting up Ubuntu 16.04 with VirtualBox

FIRST NOTE: I tried the solution proposed by this topic, but it did not work. Besides, the fact that I've reinstalled Windows recently could (or could not) make my situation a little different. Some ...
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0answers
200 views

Kernel freeze on wake up 16.04

I've been using ubuntu for a couple of months now and after kernel 3.56, I started seeing a problem when I wake up my pc. Basically, the first few second everything is working fine and then mouse, ...
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0answers
14 views

Lost system after update

I know similar subject was in forum not once, but answers which I found did not solve my problem. I have Netbook Lenovo S10-3 (old and slow) I was using Kubuntu for a long time, but about 2 weeks ago ...
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2answers
75 views

Linux Support for builtin wifi adapters in Thinkpad T-series and Dell XPS?

Ubuntu 14.04 on my Thinkpad T400 sometimes has the problem of the builtin wifi adapter stops working, and I haven't found a way of solving it, albeit asking quite a few questions in this forum. I ...
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2answers
1k views

Ubuntu 16.04 kernel 4.4.0-21 not loading nvidia/vboxdrv modules anymore (Required key not available)

The latest kernel for Ubuntu 16.04 (4.4.0-21) doesn't load the nvidia (and vboxdrv) module anymore. $ sudo modprobe -v nvidia insmod /lib/modules/4.4.0-21-generic/updates/dkms/nvidia_361.ko modprobe:...
46
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1answer
3k views

Why doesn't the latest Ubuntu edition come with the latest stable Linux kernel version?

I have recently noticed that the latest version of Ubuntu does not come with the latest stable Linux kernel version. For example, Kubuntu 16.04 LTS comes with Kernel 4.4.0-21-generic while the latest ...
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0answers
41 views

I have problem with instalation Ubuntu

Good morning, I have a problem. When I installed Ubuntu and at the end of the installation appears this error. I instal Ubuntu from Flash drive. [ 560.312235] Kernel panic - not syncing: Attemped to ...
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1answer
212 views

UFW not working in 16.04 server. Refers to earlier kernel module?

I am trying to move our mail server based on 12.04 to a brand new installation of 16.04 server. When I run sudo ufw status, I get: ERROR: problem running iptables: modprobe: ERROR: ../libkmod/...
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0answers
33 views

End kernel panic

I recently upgraded my pc to an r9 290x and a new 750w psu and I had an extra gtx 660 and 500w psu so I grabbed one of my old pcs with a horrible 3500+ cpu and installed ubuntu on it since the ...
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3answers
7k views

Solved ! Grub Installation Failed Ubuntu 16.04 fresh Installation, Unable to Boot form USB

I was trying to fresh install Ubuntu 16.04 on DELL 3521, Previously i was using 15.04. System was getting slow so i wanted to install fresh, I deleted the /, /boot, /swap and recreated. There are ...
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0answers
81 views

Brightness Fn key slow to change N3700 ( I've tried everything! )

I have an Acer R3-131T with the new Broadwell Intel Pentium N3700. My brightness works if it is adjusted in the system settings but when I use the combo "fn+brightness key (in this laptop are the ...
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5answers
1k views

Lenovo ThinkPad 11e Randomly Freezes on Ubuntu 16.04

I have a Lenovo ThinkPad 11e (with the Intel chipset not the AMD), that used to experience freezes randomly under 14.04 which have persisted after a clean install of 16.04. Description of the freezes ...
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0answers
24 views

Ubuntu Mainline kernel naming

On http://kernel.ubuntu.com/~kernel-ppa/mainline/ Why do the folders names include Ubuntu version names? For example: v4.5.2-wily/ Kernel 4.5 was (and will never be?) part of Wily.
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6answers
9k views

Could not load 'vboxdrv' after upgrade to Ubuntu 16.04 (and I want to keep secure boot)

I upgrade from Ubuntu 15.10 to 16.04 and since then VirtualBox 5.0.18 isn't starting my VMs anymore. It complains that 'vboxdrv' isn't loaded. So I try to load it and get the following error: $ sudo ...
0
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1answer
517 views

Broken Ubuntu 16.04 installation after upgrade (corrupt kernel?)

So I chose to manually upgrade our Sony VAIO Tap 20 from Ubuntu 14.04 LTS to Ubuntu 16.04 LTS and everything was going just fine, until mid-way through actually installing the upgrade, the screen went ...
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0answers
40 views

Why do mainline kernels have a version suffix?

I just had a problem with the 15.10 to 16.04 upgrade. (My touchscreen stopped working.) So I went to get the mainline kernel as usual. I went to the Ubuntu Mainline Kernel page here, downloaded and ...
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0answers
72 views

15.10 boots into TTY

I've updated from Ubuntu 14.04 to 15.10, but it boots into a TTY, and not into the login screen. Before booting, it displays a screen with a lot of command lines, the first one being [FAIL] failed to ...
0
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1answer
63 views

Where does update-initramfs look for kernel versions?

I needed to regenerate initrd. Doing this: update-initramfs -u -k all threw up errors for a kernel I compiled and then deleted some time ago (because update-initramfs could not find the /lib/...
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0answers
28 views

Kernal Panic, unable-to-mount-root-fs-on-unknown-block0-0

I am on ubuntu 15.04. I got stranded on a error like mentioned above. Tried recovery mode from Advance options, still getting same error. I also tried running it from live cd, I get the same error ...
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0answers
86 views

Ubuntu 14.04 freeze and logout

I've upgraded kernel two days ago following these instructions. I have Dell Inspiron 15 3542, uname -a is: Linux Maschina 4.2.0-35-generic #40~14.04.1-Ubuntu SMP Fri Mar 18 16:37:35 UTC 2016 x86_64 ...
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1answer
42 views

install new kernel produce the message “No space left on device” although there is free space

I compiled the kernel 4.5 and when I tried to install it using the command dpkg -i I get the message "No space left on device" although there is free space in boot partition Here the output of the ...
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2answers
209 views

Wireless drivers for the newer linux kernels 4.x

I've recently tried to install the latest stable kernel which is 4.4.6 and when the kernel was compiled and I brought the kernel up and running, there was a problem and the wireless driver (MT7630e ...
1
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1answer
97 views

Kernel panic not syncing timeout synchronizing machine check over cpus

We installed an Ubuntu Server 14.04.4 LTS to one of our customer's server. Server has large storage drives and software RAIDed SSD disks for OS. Server is crashing randomly. And we are getting error ...
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0answers
15 views

Network , USB , Bluetooth not working after removing kernel in ubuntu 14.04

I have removed few kernels from my ubuntu 14.04 installation. After that I can't connect to internet using wifi or mobile broadband . Also When I add usb device it don't show up in partition but I can ...
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0answers
139 views

Ubuntu Xenial kernel crash on extended display

I have dell xps 15 9550, when I connect my extended display the laptop display starts to flicker like crazy when I hove the mouse over it. After few seconds ubuntu freezes. ctrl + alt + 1 or 2 does ...
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0answers
27 views

Testing the newest kernel without rebooting

I've reported a bug (1568635) on launchpad. They replied, asking me to test the latest kernel. I have a live DVD iso, can connect to lan Internet and have a link to the newest kernel files (.deb). I ...