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

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4
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1answer
149 views

Confusion with multiple linux kernel images - Ubuntu boots on older kernel

I m running Ubuntu 16.04. After a prompt by software update, that I discarded, as I booted I opened a terminal and run my update alias: alias maintain='set -x; sudo apt-get update && sudo apt-...
1
vote
0answers
39 views

No WiFi Networks detected on my Alienware 17 R3 with Killer Wireless-AC 1535 card [duplicate]

I installed Ubuntu 16.04 LTS on my Alienware 17 R3, which comes with Killer Wireless-AC 1535 WiFi card. The WiFi hardware seems to be detected but no WiFi hotspots are being detected. I learnt ...
0
votes
0answers
26 views

Why does upgrading the Linux Kernel often cause one to have to run 'apt-get autoremove' twice?

I have noticed that after installing a kernel update through the standard means of sudo apt-get dist-upgrade that sometimes (very rarely) when I run sudo apt-get autoremove afterwards it says that ...
1
vote
0answers
49 views

USB keyboard does not work after each time kernel gets updated

I've had an old issue with my USB connected keyboard specially after kernel updates. The problem in the first place is the Ctrl, Windows/Super and Alt buttons are all mapped to Shift button that was ...
0
votes
0answers
12 views

Error during ubuntu installation “Unable to install GRUB in /dev/sda ” HP Pavillion UEFI laptop

I recently bought a new HP Pavillion laptop preinstalled with Windows 8 and I upgraded to Windows 10. I kept 100 GB for ubuntu. First time it installed fine through usb. However after a couple of days ...
3
votes
0answers
140 views

16.04 - Slow Kernel Boot (LVM issue)

After upgrading to Ubuntu 16.04 my system boot slow down consistently To analyze the cause I used this command. systemd-analyze plot > boot.xml google-chrome ./boot.xml I have found out ...
-1
votes
2answers
540 views

Problem with a kernel error during update

I had an error occur when updating using the standard ubuntu updater. Afterwards, after a bug report was sent, i typed this into the console. Is there any way back from this or is it a re-install? ~ ...
1
vote
0answers
242 views

Ubuntu Kernel problem

I'm having troubles to boot my fresh Ubuntu 16 installation. Installed kernels: 4.4.0.24-generic 4.4.0.22-generic 4.4.0.21-generic Here are the results when booting from any of these kernels: ...
0
votes
1answer
36 views

Recovery action for reserved kernel page: Failed

In a new install of Ubuntu 14.04.4 server, the kernel version is 4.2.0-27-generic, there are the following entries in the syslog file. MCE:0x10de:reserved kernel page still referenced by 1 users MCE:...
0
votes
1answer
20 views

/dev/ttyS* permission denied

Answers posted so far have not really addressed a good solution. Just installed 15.10 and get permission denied on bootup or reboot, even after changing them to crw-rw-rw from crw-rw----!
2
votes
1answer
20 views

How is a signed kernel image created? [closed]

There are two source packages in Debian: linux and linux-signed. The signed images show the latter as their source. But it is much smaller than the former. What's going on?
0
votes
0answers
79 views

Linux Ubuntu can't remove old kernels + cannot stat /lib/libiptc.so.3.0.a

I have a problem with Linux Ubuntu. apt-get autoremove Reading package lists... Done Building dependency tree Reading state information... Done The following packages will be REMOVED: linux-...
2
votes
0answers
17 views

PPA upload of custom kernel package

Is there any documentation on how to build custom kernel packages and upload the result into a PPA? In particular, I would like to build mostly the stable upstream kernel (i.e. git://git.kernel.org/...
1
vote
2answers
46 views

how to patch the kernel from a repo

I would like to patch my kernel so that it would do zerocopy. I found this nice repo on github but i'm not too sure how to go about doing it. https://github.com/Basler/linux-usb-zerocopy it says on ...
12
votes
3answers
859 views

Why does Ubuntu 16.04 set all drive IO schedulers to “deadline”?

I just installed Xubuntu 16.04-64bit to a second partition on my laptop. I noticed it seemed a bit slow at times, so I checked which IO scheduler it was using for that drive, which turns out to be ...
0
votes
1answer
26 views

Boot-Repair gets a kernel-panic while scanning the system

I had some booting problems after installing Linux to dual boot, so I downloaded the Boot-Repair image from Sourceforge, put it onto a USB stick, and tried using it. I got to an ASCII menu, chose to ...
1
vote
1answer
35 views

what happens when mount a partition on /?

I have a partition /dev/sdb1 what happens after executing this command? sudo mount /dev/sdb1 / -o rw ^ I know that must change mountpoint "/" address as mentioned above. ...
0
votes
0answers
23 views

Ubuntu 14.04 to 15.5 upgrade corrupted my superblock

Whilst doing the automatic upgrade to Wiley Werewolf, my 32-bit Toshiba laptop (which has been running 14.10 for quite some time) corrupted the file system superblock. Now the kernel panics at bootup ...
1
vote
0answers
35 views

How to restore kernel in 16.04 LTS? [duplicate]

I accidentally removed the kernel from my Ubuntu 16.04 LTS while trying to update it. Now when I start it up, my Grub2 doesn't show Ubuntu as an option anymore. So I boot up the Live USB drive and try ...
1
vote
0answers
19 views

Linux headrers for 3.2.52-030252-generic-pae

I am using ubuntu 14.04 and want to install the headers. I ran sudo apt-get install linux-headers-$(uname -r) but I get Reading package lists... Done Building dependency tree Reading state ...
2
votes
1answer
223 views

Mouse & Touchpad Separate Settings Missing

Ubuntu 16.04: The settings menu used to have separate settings for external mouse and touchpad, now it only contains one set of settings for both. The settings for pointer speed actually do not change ...
0
votes
0answers
193 views

Linux Kernel 4.6.1 Nvidia Driver 340

I have recently upgraded my system to 16.04. I have the NVIDIA 340 legacy driver. I decided to get the Linux Kernel 4.6.1 from the Mainline Kernel repository (http://kernel.ubuntu.com/~kernel-ppa/...
0
votes
0answers
33 views

Adding system call in latest kernel

I tried to add a new system call in the system table. As per the documentation,there should be a directory like /arch/x86/syscalls. The syscalls directory is missing in kernel version 4.4.0-22-generic ...
1
vote
0answers
83 views

VMware player kernel module updater

I have installed VMware in Xubuntu 14.04.4 LTS, but when I open VMware, it gives me this: I click "Install", enter my password, then this shows up: And then it displays: How can I fix this? ...
0
votes
0answers
41 views

Ubuntu 14.04 connect wifi only with reboot after “sudo apt-get purge bcmwl-kernel-source”

The system can detect the wifi well, but it fails to connect it even with full signal bars. To connect Wi-Fi, every time I have to run: sudo apt-get purge bcmwl-kernel-source sudo reboot Then it ...
0
votes
0answers
17 views

Kernel hangs using a custom USB device on sd_revalidate_disk

My Ubuntu 14.04 with 4.2.0-36-generic is hanging on 100% kernel thread when using a custom prototype USB device( which is working fine on debian). The kernel thread is: Jun 3 17:09:09 sce-XPS13 ...
0
votes
0answers
18 views

copy to ext4 formatted drive HDD until 99.9% full, preventing fragmentation?

In general I do understand how ext4-fs manages it to avoid fragmentation, but one question remains after intense investigations... Situation: I have to copy many files of very different sizes to an ...
1
vote
1answer
61 views

ubuntu kernel git for xenial gives wrong source version

I'm trying to pull kernel sources from this location: http://kernel.ubuntu.com/git/ubuntu/ubuntu-xenial.git/ And I'm expecting to see 4.4.0-21/22 related sources. What I'm getting is 4.4.8 version ...
2
votes
1answer
46 views

Ubuntu 14.04 Doesn't Detect Internet on Dual Boot

This question has been asked before but I've tried all the other solutions and have not been having any success. I'm following this thread: Ubuntu can't detect wifi networks on macbookpro 13.3 So ...
2
votes
0answers
66 views

Wacom Intous Art Support on Ubuntu 15.10 wily

Kernel: x86_64 Linux 4.2.0-36-generic OS: Ubuntu 15.10 wily DE: KDE5 So I have followed several articles online from several google searches such as: https://forums.linuxmint.com/viewtopic.php?f=...
1
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0answers
38 views

Virtualbox Guest Additions and kernel version

I tried installing Lubuntu 14.04.4 (which is running on kernel 4.2) in Virtualbox, but when I installed the virtualbox guest additions (virtualbox-guest-dkms), the screen resolution still failed to ...
1
vote
1answer
44 views

Trying to install Ubuntu and got message about Kernels [duplicate]

We have a lot of computers that have been donated to our school, but they are all running very slow. I am trying to find a way to make the computers run better without costing us an arm and a leg. ...
0
votes
0answers
56 views

Error on compile CyanogenMod

I need help. After running make mrproper I can't build CM source in Ubuntu 14.04. It's throwing this error: build/core/tasks/kernel.mk:149: *********************************************************...
0
votes
3answers
240 views

How to make sure I stay on Linux kernel version 3.13 (Ubuntu 14.04)?

I just did a fresh install of Ubuntu 14.04 yesterday, because my WiFi adapter is not supported in 16.04. I am told this is likely due to the Linux kernel. In order for my computer's WiFi adapter to ...
0
votes
2answers
76 views

Force rescan of the pci device which was wrongly detected by os

I am using ubuntu 14.04.3 , kernel version 3.13.0-67 with a Atheros Wifi Card AR93xx .Many of the times ,no wireless detected on system boot. Below is the problem I detected . The wireless card ...
1
vote
2answers
85 views

Stop apt-get autoremove from removing old kernel?

I like managing kernels my self, and I can't figure how to stop apt-get autoremove from deleting older kernels.
1
vote
1answer
662 views

What to do after Failed to start Load Kernel Modules

I tried to upgrade my system from Ubuntu 14.04. My laptop froze for a few hours. Nor even the pointer did anything. So I switched off by pressing the power button for a few seconds. This uncompleted ...
0
votes
1answer
22 views

Kernel Panic - Ubuntu 14.04 crashes when playing call of duty

After playing Call of Duty 2 for about 5-10 minutes my computer crashes (with an Kernel Panic) and displays this message: What does this mean and how can I fix it?
0
votes
0answers
30 views

dkms problem with VirtualBox kernel registration after 15.10 to 16.04 upgrade [duplicate]

After upgrading an Ubuntu GNOME 15.10 machine to 16.04 I have encountered some problems with my VirtualBox and dkms installation. It seems that during the upgrade dkms had some problems registering ...
0
votes
0answers
70 views

Kernel panic - not syncing: attempted to kill init! and previous kernels do not work

I am new on using Linux. I use it for some imaging analysis. Today my ubuntu upgraded itself but at the end of the upgrade it gave error. After that the system blocked. I restarted the machine ...
0
votes
0answers
102 views

Black screen after upgrading to Ubuntu 16

I performed the Ubuntu 16 upgrade on my Dell Inspiron N5110 running Ubuntu 15.10 the other day, and I was greeted with a black screen. I got the noise it makes when the login screen comes up, but ...
3
votes
1answer
99 views

How to remove kernels from previous release

See question How to remove kernels from previous release? which is marked as duplicate. I ask this again, because the question is special case and not handled in the answers for the related question. ...
1
vote
2answers
155 views

ralink rt3290 driver module not launching and I can't figure out why

I have an HP Envy 15 with the RT3290 from ralink. It had Win8 on it which I have completely removed and installed ubuntu 16.04 on it. I have been trying to get the wireless to work and haven't been ...
0
votes
0answers
14 views

14.04 Multiple Crashes, Different Circumstances, How to fix?

I am running 14.04 on Hard Drive not Virtual (just for clarification). Sometimes I am doing something, anything, maybe browsing the internet or typing something, and then it gets frozen. I have to ...
0
votes
0answers
121 views

Ubuntu 16.04 fails connecting to a specific wireless network

I have a problem connecting to a specific wireless network, just could not connect or obtain an IP address. I'm running Ubuntu 16.04 on my laptop Thinkpad t400, with the network adapter Intel 5100AGN....
0
votes
1answer
117 views

Surface Pro 3 - installing kernel 4.6 [duplicate]

I am new to ubuntu. I just installed latest ubuntu and I am trying to install the latest kernel v4.6, so I can get a few functions of the type cover to work. I am not familiar with the kernel ...
3
votes
1answer
5k views

Updating to Kernel 4.6 on 16.04 [closed]

I have a fairly fresh install of Ubuntu 16.04 running on Kernel 4.4.0-22. Today I saw that the latest stable kernel version is 4.6 on kernel.org and I have a few questions: Is it worth ...
0
votes
2answers
58 views

Xubuntu Wifi driver not working after update

I'm running Xubuntu 14.04 LTS. I have a TP Link T4U USB wifi adapter, whic is based on the Realtek RTL8812AU chipset. It has been working flawlessly for a number of months, up until Linux kernel 3.13....
0
votes
1answer
39 views

Where is kernel.release generated and updated?

There a file include/config/kernel.release in Linux kernel source. It contains version of the kernel (for example 4.6.0-rc4+). As I know this value is generated from nearest tag of git. I want to ...
-1
votes
1answer
24 views

Undo installation of an unstable kernel [duplicate]

I am facing a problem with kernel installation. I installed two packages but the last one didn't. So I want to uninstall the first package. In this link I have described what was my problem. my ...