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

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Problem on squid

My authentication on squid stops, after this message on syslog: May 6 10:44:49 kernel: ntlm_auth[27754]: segfault at 8 ip 00007f3a88b5b9b0 sp 00007ffe588751c8 error 4 in ...
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About Kernel 3.14.4

I wanna to ask a question,my english might be very bad so please forget me =D For my problem is when I install the Kernel 3.14.4 that always jump alot of this line to me : libkmod: ERROR ...
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0answers
18 views

Problem with installing 16.04. Tried upgrading from 14.04

I am using 14.04 for a long time. Now today morning I tried upgrading to 16.04. All the packages were downloaded and installed. But after a few moments ( when I didn't pay attention to my laptop) it ...
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0answers
11 views

Kernel compile sotware

How to install this: Current Minimal Requirements Upgrade to at least these software revisions before thinking you've encountered a bug! If you're unsure what version you're currently running, the ...
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6answers
2k views

Could not load 'vboxdrv' after upgrade to Ubuntu 16.04

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 ...
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1answer
54 views

Looking for ppa kernel for ubuntu 16.04

http://kernel.ubuntu.com/~kernel-ppa/mainline/ dose not have any ppa kernels for 16.04. I have stability with current kernel/nvidia. I have frequent system freeze (when switching between VT). The ...
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11 views

Remove latest kernel

Ubuntu 14.04 comes with kernel 4.2.0-27 or newer but my laptop supports only up-to 3.13.0-85 so after installing kernel 3.13.0-85 I want to remove 4.2.0-27 but when I try it is asking to install newer ...
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5answers
2k views

Ubuntu 16.04 Skylake 6th Generation Screen Flickering

I have a Lenovo ThinkPad t460s here. It is the NVMe PCI SSD version. The CPU is i7 6600U (Skylake 6th generation) with Intel HD 520. About a month ago (beginning March 2016), I installed Ubuntu GNOME ...
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108 views

Trouble installing Ubuntu on a Gigabyte motherboard

So I've been reading around here about similar problems to mine but nothing helps, mainly because everyone is having problems after the 15.04 update from 14.04 or 14.10. My problem isn't with ...
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1answer
26 views

Choosing a motherboard for a ubuntu build

I'm planning my first computer build. Because I love programming I decided to go with linux for a unix like operating system. I've spent hours reading about components. My first plans for a system ...
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1answer
58 views

Kubuntu 16.04: Suspend works only once after reboot

After upgrading to Kubuntu 16.04 (with default 4.4 kernel), suspending works only once after reboot. Second attempt fails, the screen goes blank, but the power remains on. After a forced reboot, I can ...
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11 views

Skip sign verification at module loading

With secure boot enabled, is there a way to load a custom kernel module not signed, or signed with an auto-generated private key? Trying to load my custom module, insmod exits with the error Required ...
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2answers
81 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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1answer
163 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
13 views

“[Firmware Bug]: ioapic 2 has no mapping iomm” after kernel update

I'm on a macbook pro and I installed ubuntu alongside osx, it works really well except the handling of lid closure, so I upgraded the kernel to 4.4.8 in order to see if it can fix the problem. In ...
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8answers
224k views

How to update kernel to the latest mainline version without any Distro-upgrade?

Currently I'm running Linux-3.0 and I want to update it to Linux-3.3.1 the latest stable kernel release as mentioned at http://www.kernel.org. Can I update to 3.3.1 in Ubuntu without any risk of ...
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1answer
37 views

Ubuntu 16 Kernel BUG (“Oops: 0000 [#1] SMP”) related to amdgpu

I recently installed Ubuntu 16.04 on my personal notebook (Dell Inspiron 5548) and everytime I try to logout from any user account, I get a Kernel BUG ("Oops" message) related to amdgpu. I tried ...
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0answers
19 views

Kernel not found when booting a 16.04 USB on HP Pavilion g6

I created a live USB from the Ubuntu 16 AMD64 iso using Startup Disk Creator. But every time I try to boot from the USB, it shows the error vesamenu.c32: not a COM32R image. I have an HP ...
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0answers
10 views

Import FreeBSD Kernel Module into Ubuntu

A bug in the linux kernel's USB module is stopping me from using a barcode reader with Ubuntu - USB Keyboard Barcode Reader Dropping Chars . This bug isn't present in FreeBSD. Can I use the USB ...
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0answers
27 views

USB Keyboard Barcode Reader Dropping Chars

I bought a barcode reader which connects over USB and mimics a keyboard. Connecting to Windows, the barcode is read correctly but connecting to Ubuntu, it drops some repeating chars. It consistently ...
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0answers
49 views

Kernel Headers not found error on installing NVIDIA cuda drivers on Ubuntu 16.04 LTS

just tired to install the NVIDIA cuda drivers on Ubuntu 16.04 (unsupported) but I get the following error: The driver installation is unable to locate the kernel source. Please make sure that ...
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0answers
24 views

How to ping an address port?

I'm working with this code that drop packets in a specific port : #include <linux/module.h> #include <linux/string.h> #include <linux/kernel.h> #include <linux/ip.h> /* ...
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1answer
7 views

Oops andTainted G for DVB adaptor load

Can anyone advise on Oops and Tainted fail please? Running the 3.16.0-4-amd64 kernel and loaded media_build from v4L and supporting applications. But both of 1. Hauppage WinTV Nova TD500 and 2. PCTV ...
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1answer
92 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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1answer
28 views

Bluetooth not working on Ubuntu 14.04 with Wily kernel (4.2)

I have a Dell Precision M4800 using Ubuntu 14.04.4 with Wily kernel (4.2.0-35). Bluetooth is not working for me. Tried the steps in this question, as my setup seems to be exactly the same as the one ...
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5answers
290 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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2answers
47 views

How to circumvent hard link creation permission to directories on the same file system

I'm well aware of the difference between symbolic and hard links. I'm also aware of the dangers of creating hard links to directories. Nevertheless, I'm insisting on creating a hard link to a ...
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1answer
3k views

Qualcomm Atheros Device [168c:003e] (rev 32) QCA6174 - Problems after kernel/firmware update (4.2.0-18-generic/firmware_1.149.2)

I recently updated because of a missing wifi driver (Qualcomm Atheros Device [168c:003e] - ath10k_pci) to 4.2.0-18-generic/firmware_1.149.2. The Wifi is still not working (even with the driver). ...
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1answer
61 views

ubuntu 16.04 auto load usb dvb-t dongle module

The kernel module of a dvbt usb dongle is not loaded automatically when plugged in. dmesg prints on plugin of the dongle: [25205.557608] usb 1-5: new high-speed USB device number 9 using ehci-pci ...
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0answers
85 views

Upgrading 16.04 LTS to kernel 4.5 (solve suspend/hybernate/HDMI) [on hold]

The kernel 4.4.0.21 which was installed on 16.04 LTS doesn't come with an option of suspending / hybernating my Lenovo Z51-70, due to a bug or whatever, and when I upgraded to 4.4.8 my battery life ...
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1answer
27 views

Servers Hardware Certification of kernel upgrades

I am trying to figure out the HW certification policy for older HW (my interest is servers). When a new point-release or HWE is available, it usually includes a Linux kernel update. Is there a ...
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1answer
4k views

any idea what type of error this is - Machine check / Kernel Panic

I have been getting the following problem running Ubuntu 12.10. Basically, it freezes completely, doesn't respond to keyboard or mouse, CAPS won't change and alt+sys req+REISUB doesn't do anything. ...
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2answers
999 views

Half-installed kernel, can't install/uninstall anything

Well, I have this problem which I am not sure how I got, but I need some help. First of all, my computer runs the Ubuntu version 14.04.3 LTS, and the current kernel (the one I get from uname -r) is ...
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0answers
10 views

scheduler: how to tune cfq to favor interactive processes

Problem: scheduler doesn't seem to favor interactive processes: On a desktop system with automatic cron-scheduled backups from one (btrfs) disk to another (ext4). The backup process mounts the idle ...
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0answers
9 views

Edit “Kernal Boot Parameter” from windows to install Linux

Trying to install Linux on a new think pad and getting the error: Intel_pstate: HWP enabled Then it stops loading. It seems I need to edit the boot parameter but all instructions I can find are ...
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0answers
22 views

Systemd Kernel Variables Error

At boot, I receive an error message [failed] failed to start apply Kernel variables. I have not used a Systemd distro until now so I'm not sure what I should be looking for. I ran this in terminal ...
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0answers
47 views

16.04: Powering off discrete graphics results in kernel panic

I am trying to disable my discrete GPU, as I don't need the extra power and I'd rather have a longer battery life. I am currently using Ubuntu 16.04 with the 4.6.0-040600rc1-generic kernel and amdgpu ...
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0answers
30 views

“Gave up waiting for root device” on VMWare with custom kernel

I'am running Ubuntu 14.04 on WMVare virtual machine. I have built a custom kernel and succesfully installed it. But on booting up i get this "Gave up waiting for root device" message. Meanwhile it ...
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1answer
66 views
+100

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 ...
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0answers
29 views

what is the command that deal with kernel in linux? [closed]

what is the command that deal with kernel in Linux ? i want the All command that deal with kernel in Linux to my seminar so help me please.
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1answer
6k views

Error while starting ubuntu 15.04

After i have upgraded my Dell Latitude E5540 to Ubuntu 15.04 i have the following upon booting up ! Scanning for Btrfs filesystem [FAILED] Failed to start Load Kernel Modules. See "systemctl status ...
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1answer
6k views

Hostapd Failed to update rate sets in kernel module

I'm getting this error launching hostapd with minimal conf Failed to update rate sets in kernel module I've just installed Ubuntu-GNOME 13.04. When I was using Ubuntu 12.04 did not receive this ...
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1answer
43 views

How to rebuild kernel for wacom tablet driver?

I have installed Ubuntu 16.04 and my Wacom CTL-471 completely crashes the system every time I get near the surface with the pen. Every time I have to reboot, nothing helps. So I found out that these ...
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2answers
869 views

How can I resolve BUILD_EXCLUSIVE error in upgrade to 3.19.7 Kernel?

I ran the following commands to upgrade from 3.19.0 to 3.19.7: $ cd /tmp $ wget ...
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0answers
13 views

How to Restore Ubuntu 14.04 kernel and Replace `bcmwl-kernel-source`?

I followed unsuccessfully an advice in the thread Will 16.04 Support Wlan driver of Mac air? and run sudo apt-get update sudo apt-get install bcmwl-kernel-source sudo apt-get autoremove How can ...
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1answer
16 views

Source code of usbmon

Where can I get the source code of usbmon utility. Googling didn't help me to get the source code. Any help is appreciated.
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0answers
15 views

Ubuntu 14.04 LTS & Ubuntu 15.10 - ALERT! /dev/disk/by-uuid/… dropping into shell

I got this error after some days running ubuntu alongside windows 10. I am working on an acer laptop. I tried every expected solutions in other similar questions here, but none worked for me. So I ...
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0answers
14 views

zswap: default zpool zbud not available, pool creation failed

My system seems to be working fine, but in the interest of learning, I'm investigating the red bits of my dmesg. Here's one: zswap: default zpool zbud not available zswap: pool creation failed what ...
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2answers
52 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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0answers
13 views

UPGRADE LINUX KERNEL 3.4 to 3.10 [closed]

I am a developer but from few days i am finding way to patch linux kernel 3.4.111 to 3.5.1 at least but i can't find any way on google Thanks