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

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7 views

Keyboard drops keystrokes after resume

I recently upgraded my motherboard to a Z68 Pro3-M and have been having issues with my USB keyboard after resuming from suspend. After I resume from suspend, the keyboard will drop keys if I type ...
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2answers
309 views

How to Install Linux Kernel 4.6 in Ubuntu 16.04?

I do but get dependency errors which I do not understand wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-yakkety/linux-headers-4.6.0-040600_4.6.0-040600.201605151930_all.deb sudo dpkg -i *....
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0answers
20 views

vmware complains about a kernel module that don't exist (vmci)

I installed VMware workstation 12 pro on an ubuntu distribution, and found it fine. After this, I saw that the "server" product was also fine, and moreover free. So I did not waited the end of the ...
1
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0answers
46 views

Intel 8165 wireless not working. Ubuntu 15.04 [closed]

I am using Ubuntu 15.04 on Lenovo ideapad 500-15isk. I have a dual boot with Windows 7 and cant run my wireless in Ubuntu. i did a $ sudo lshw -c network to get *-network ...
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2answers
45 views

14.04.3 LTS + xenial kernel upgrade + nvme SSD - won't boot

I have a 14.04.3 LTS system that won't boot after upgrading to 4.4.0-24 kernel (xenial kernel image packages). It has an NVME SSD, and with the 4.4 series kernel, it can't seem to see the NVME. The ...
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1answer
50 views

How do I switch from linux-generic to linux-virtual?

I am running Ubuntu 16.04 in a VM, and want to switch from the linux-generic kernel to the linux-virtual kernel. What are the commands to run? I have installed linux-virtual... apt-get install linux-...
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0answers
17 views

Does 50 % memory and 40 % swap usage (equal size) with vm.swappiness of 90 indicate a kernel bug? [duplicate]

I have 8 GB RAM and a 8 GB swap partition and I set vm.swappiness to 90 in /etc/sysctl.conf (and verified that it's used with the sysctl command at runtime). The system uses 50 % of RAM and 40 % of ...
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2answers
128 views

Having trouble upgrading Linux kernel in Xenial

I have downloaded the latest kernel and headers but Ubuntu is not using it on reboot. Only 3.19.0-22 is working, when I choose one in the Grub menu. Can I somehow refresh that list or force Ubuntu to ...
4
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1answer
101 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-...
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0answers
38 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 ...
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0answers
23 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 ...
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0answers
39 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 ...
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0answers
11 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
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0answers
104 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 ...
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0answers
295 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? ~ ...
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0answers
192 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: ...
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1answer
25 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:...
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1answer
18 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
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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?
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0answers
54 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
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0answers
11 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/...
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2answers
45 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
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3answers
690 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
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1answer
19 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
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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. ...
1
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1answer
49 views

Thinkpad kernel panic when wifi switch enabled

I have a Thinkpad T410 laptop that I hadn't used in a while. I tried to install Ubuntu on it but the computer would freeze during install and the caps lock key would flash. I looked this up and found ...
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0answers
20 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 ...
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0answers
31 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 ...
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0answers
15 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 ...
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0answers
44 views

class 'KeyError' (The package has no package named 'apt')

After selecting Ubuntu from boot-loader and entering password at logon, I see a new X on the app indicator side and got to know that the package named apt is missing. Here is the file with details ...
2
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1answer
128 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 ...
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0answers
123 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/...
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0answers
20 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 ...
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0answers
77 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? ...
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0answers
34 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
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0answers
15 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 ...
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0answers
17 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
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1answer
39 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
40 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
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0answers
53 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=...
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0answers
31 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
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1answer
43 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
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0answers
44 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: *********************************************************...
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3answers
161 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 ...
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2answers
51 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 ...
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2answers
70 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
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1answer
94 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 ...
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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?
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0answers
29 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
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0answers
33 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 ...