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

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1answer
27 views

Ubuntu 14.04 LTS 64bit guest OS kernel panic on start up

I have a Ubuntu 14.04 LTS 64bit guest OS running on VMWare Workstation 12 Player on a Windows 10 host. I was running Eclipse for a while recently when it got really slow despite multiple Eclipse ...
0
votes
1answer
117 views

Unable to find and connect wifi in ubuntu 14.04 LTS after last update

I'm not able to find the WiFi in the top right header nor connect to it in my ubuntu 14.04 LTS. I'm using Windows 10 with dual boot and is able to connect to wifi using Windows but don't know why it ...
0
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0answers
11 views

Vulnerability ( CVE-2014-4608) recurs in Linux 3.17.2-4.5? [closed]

Recently, I have done some tests with Linux-kernel bug commits. And I found that the patch codes ( fixing CVE-2014-4608, click here to the code) didn't appear in the version 3.17.2 to 4.5. I'm just ...
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0answers
36 views

qualcomm atheros 168c0042-rev-30

i can't get my laptop WiFi up and running with ubuntu (Kernel 4.4.0-22-generic). I have a Qualcomm Atheros 168c:0042 pci adapter. Things I already tried: The solution from this question ...
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0answers
48 views

USB stopped working after kernel update

My USB ports stopped working under Ubuntu 12.04 after kernel update to 3.3.6-030306. I get an error message during boot process as "xhci_hcd can't set up". Details: > dmesg | grep xhci [ ...
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0answers
34 views

Error-2 : End kernel Panic while booting

After running sudo apt-get -f install command at terminal and downloaded about 351 MB of fixes, I restarted Ubuntu 16.04 OS but after selecting "Ubuntu" From Windows Boot Menu (Default OS : Windows ...
0
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1answer
78 views

Boot Option : ACPI=off

acpi=off is the only way to USB Live Ubuntu/Lubuntu, which eventually shows up only 1 processor (for i7 6700HQ), no power option, no brightness control etc. There are couple of people suffering from ...
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2answers
37 views

Ubuntu boots to command line after kernel error

I was attempting to install Windows 7 in Virtual Box with Ubuntu 14.04 as the host OS. While so doing, a kernel error message came up. Suddenly, the terminal and software center were gone. I managed ...
0
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1answer
35 views

Bluetooth broadcom 43142 unstable connection and other bugs during work

I could successfully install drivers for this module thanks to this answer, but there are some issues. I need bluetooth for my keyboard, which works just fine under Windows. But with linux ...
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3answers
245 views

Suspend broken on Ubuntu 16.04 LTS, Dell XPS 9350

Since I upgraded from Ubuntu 15.10 to Ubuntu 16.04 LTS on my Dell XPS 9350, suspend is broken. When closing my lid the laptop will suspend, but resuming fails and it reboots. I tried pm-suspend and ...
2
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1answer
46 views

Can't purge old kernels (dependency problems), but /boot is out of space

I'm running Ubuntu 14.04.4 LTS, and I'm trying to install a new package using apt-get. Unfortunately, whenever I try I get messages like: The following packages have unmet dependencies: ...
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1answer
40 views

Blacklisting a module only for specific kernel versions?

When I boot a 4.4.x kernel, I want to make sure that the buggy staging driver r8723au is blacklisted, in favor of the much-improved mainline rtl8xxxu. However, when I boot an older 4.2.x kernel, I'll ...
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0answers
13 views

static route not getting picked up in linux routing table

I have a static route configured in /etc/network/interfaces file, but when i reboot, the changes in file is not taking effect in kernel routing table. I am using ubuntu 16.04. contents of file for ...
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0answers
18 views

My laptop won't boot with the latest version of the kernel

I have a Samsung Series 9 ultrabook and after installing the latest version of the Linux kernel I'm greeted with a blank screen after the Grub menu. However if I choose the kernel version 3.13.0.24 ...
1
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0answers
24 views

“could not add sta to kernel driver” hostapd - not able to connect more then 10 clients

I am using an nuc with wifi card "intel 3165" with ubuntu 14.04 amd64 server edition and kernel version 4.2.0.27 . I have isc-dhcp-server, dnsmasq, hostapd installed and configured on the system . I ...
3
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0answers
66 views

Xenial with 4.4 kernel still requiring reboots

I'm seeing a 16.04 system with a 4.4 kernel requiring reboots upon upgrading the kernel. I had thought that with the 4.x kernel no more reboots would be required due to the hot patching support that ...
1
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0answers
157 views

Ubuntu 16.04 lts freezes, even after upgrading kernel

I installed Ubnuntu 16.04 LTS on my machine last week. Few days after, it started freezing randomly. I upgraded the kernel version to 4.5.0-040500-generic after some search results suggested an ...
0
votes
1answer
137 views

Kernel 4.5.3 WIFI issues?

Specs: Dell XPS 15 9550, Ubuntu 16.04 Kernel 4.5.2 worked great for me. After upgrading to kernel 4.5.3, my WIFI is spotty at best. It was instantly noticeable. Many times, it's like my network ...
0
votes
1answer
99 views

How to sign kernel modules with sign-file?

I just installed Ubuntu 16.04 with secure boot and encountered the same vmware-error as described there: modprobe: ERROR: could not insert 'vmnet': Required key not available. One way to circumvent ...
1
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0answers
33 views

I was installing ubuntu and this happened

I'm installing ubuntu into an old computer. Everything was going great, I was in the installination phase, I got to the part where it asked me for what I would like to name this computer and then ...
0
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2answers
199 views

Kubuntu 16.04 and NVidia drivers

This question was already asked a few times already. The threads where it was asked were closed due to low quality answers. I can confirm that none of the answers worked for me - I upgraded the ...
0
votes
1answer
90 views

Do I need to upgrade to Kernel 4.2 on Ubuntu 14.04.4 LTS?

I am using Ubuntu 14.04.4 LTS on my Dell Inspiron 5548 with i5 and ATI Graphics AMD Radeon R7 M265 2GB DDR3. (First I installed Ubuntu 14.04.2 LTS then got automatically upgraded to 14.04.4 LTS but ...
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0answers
16 views

Touchpad debugging - Opinion needed

I'm trying to debug an odd touchpad problem with Ubuntu 14.04.4 on a Lenovo e460. I have followed this touchpad debugging tutorial, but it doesn't directly address the symptoms I am experiencing. ...
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0answers
28 views

Install perf at 4.5.2 kernel

Does perf affect battery life? At 4.5.2 kernel stable in 16.04 LTS the TLP output states: /sys/devices/system/cpu/intel_pstate/min_perf_pct = 18 ...
2
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0answers
87 views

Kernel Panic - not syncing - Attempted to kill init ! exit code 0x00007f00

I am using Ubuntu 14.04 LTS dual boot with windows 8. Yesterday I was installing hadoop on my system and suddenly Ubuntu stopped working. So I have to power it off directly by pressing and holding ...
0
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1answer
26 views

What is the use of Kernel updation?

Now I am using Ubuntu 14.04 LTE.What is the advantage over previous version if I updated to new Kernel update?
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0answers
20 views

slow startup boot cause by the usb 1-1.4

For some reason the boot time is very slow I run the dmesg command in order to see what i tacking so much time. [ 8.191775] USB Video Class driver (1.1.1) [ 8.230700] usb 1-1.4: USB ...
4
votes
2answers
1k views

Kernel update gets stuck (Ubuntu 16.04, Kernel 4.4.0-22)

The software updater displayed a message that new update are available. I chose install update. Apparently, the updates were supposed to install Kernel version 4.4.0-22. But, the installation process ...
0
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0answers
60 views

the wifi driver is not working in Ubuntu 16.1

my droadcom chipset is BCM43142 802.11 b/g/n. I checked with the software and updates tab in the system settings and it shows that I am using a driver sourced from bcmwl kernel source.But it is still ...
-1
votes
0answers
21 views

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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0answers
19 views

About Kernel 3.14.4

For my problem is when I install the Kernel 3.14.4 that always jump alot of this line to me : libkmod: ERROR ../libkmod/libkmod-config.c:686 kmod_co'fig_parse: /etc/modprobe.libkmod: ERROR ...
2
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0answers
37 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
16 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 ...
0
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0answers
18 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 ...
0
votes
1answer
52 views

Choosing a motherboard for a ubuntu build [closed]

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 ...
1
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0answers
64 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 ...
0
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0answers
39 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 ...
0
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0answers
27 views

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

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 ...
2
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0answers
189 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 ...
0
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0answers
35 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> /* ...
0
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3answers
207 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 ...
0
votes
1answer
15 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 ...
1
vote
1answer
62 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 ...
0
votes
1answer
121 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 ...
3
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0answers
36 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 ...
0
votes
1answer
157 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 ...
3
votes
1answer
30 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 ...
0
votes
1answer
17 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
185 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 ...