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

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1answer
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Compilation of Linux kernel 3.14 stops without any errors on ubuntu 14.04

I'm trying to compile linux kernel 3.14 on ubuntu 14.04. Before anyone points out, I know newer stable versions of the kernel are available but I have been asked to install 3.14 itself. So, I wrote a ...
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0answers
44 views

Kernel Panic not syncing: Is HDD corrupt?

when I start my laptop, I get a kernel panic every time (even in rescue mode or older kernel versions). I don't know what causes the issue it comes up since last shutdown. Bevore a basic command line ...
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0answers
21 views

Drivers uninstall after kernel update

I have a Logitech g710 keyboard which has extra buttons, so I have to install a driver https://github.com/Wattos/logitech-g710-linux-driver. The problem is, whenever a new kernel update comes out I ...
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1answer
11 views

Which file defines the virtual console color

I am trying to find the source in the Ubuntu kernel tree that defines color values for the virtual console. Where is it defined? On other linux distributions, it is defined in drivers/char/vt.c
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2answers
167 views

Install old kernel in ubuntu 16.04

My laptop can work perfectly on kernels up to 3.13.0-85 so is it possible to install the same in Ubuntu 16.04 without affecting it's performance? And if yes then how?
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16 views

WCHAN = 0 for a sleeping task?

I am a little confused about the status of a process I have. It looks like this: $ ps -eal | head -n 1 ; ps -eal | grep perf F S UID PID PPID C PRI NI ADDR SZ WCHAN TTY TIME CMD 4 S ...
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0answers
37 views

Install cloud image on Rasperry pi 3

Can anybody explain what's the current status of Ubuntu on Raspberry Pi 3? AFAIK only 32-bit ARM mode is supported, but there are some thngs I can't understand: Officially, there is no ARMv8 Liunx ...
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47 views

errors while trying to update to new 3.16 kernel

Error! Bad return status for module build on kernel: 3.16.0-71-generic (x86_64) Consult /var/lib/dkms/amdgpu-pro/16.15.2-277429/build/make.log for more information. Warning: No support for locale: ...
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0answers
23 views

Laptop messing up after installing/deleting linux-image, linux-headers, and the like

Yesterday, my laptop was acting up - very high CPU, hot to the touch, etc. I had no explanation for the sudden change (nothing could account for the high CPU usage), so I checked my apt history to see ...
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0answers
8 views

Enable DRM_KMS_CMA_HELPER in linux kernel [duplicate]

I'm trying to recompile my Linux Kernel 3.18 with DRM_KMS_CMA_HELPER enabled, but editing the .config file is not working. I have the dependencies enabled, but it still shows and not enabled. Is ...
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0answers
24 views

Boot widnows from grub prompt

I'm quite a noob with linux and I'm experiencing some huge troubles with an Ubuntu 16 installation. My system is composed of 2 disks: Windows 10 and Grub on the first (sda) and Ubuntu 16 on the ...
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1answer
52 views

Release name of current signed kernel

Is the output of uname -r always like 4.2.0-37-generic, or would it show the postfix .efi.signed denoting it is a signed kernel, if a signed kernel is booted on a machine (with UEFI) requiring such a ...
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0answers
19 views

How to find installed kernel image metapackages?

I have used this, but is there a better way? dpkg-query -W -f='${Package} ${Status}\n' | awk '/^linux-(.+-)?image-[^0-9]+(-lts-[^ ]+)? [^ ]+ ok installed/{print $1}' How to find kernel metapackages ...
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0answers
22 views

sysctl.conf or grub file for kernel parameters?

As far as I know it is possible to send kernel parameters with both the sysctl.conf and the grub2 configuration files at boot time. If the same parameter is configured using both methods which ...
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0answers
83 views

system freeze on monitor wake-up after upgrade to 16.04

I have nvidia gtx 980 (driver v. 364.19), MSI X99S MB, i7-5820k 32GB DDR4 ram. My setup is 3 4k monitors (on DP-0, DP-2 and Dp-4) After my monitors go to sleep (the computer is not asleep) then ...
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1answer
629 views

How to compile Ubuntu 16.04 kernel with zfs module

I build custom Ubuntu kernel with make localmodconfig at the Ubuntu 16.04 lts server with installing zfs and mounted zfs pool. make localmodconfig using config: '.config' zfs config not found!! ...
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0answers
47 views

How do I install custom kernel header files?

I've compiled and loaded a new kernel with: make localmodcongif make headers_install make install update-grub But for new kernel I do not get a new directory in /usr/src/linux-headers-<...
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45 views

Ubuntu boot error- Kernel Panic not syncing attempting

I am using Ubuntu 14.04(dual-boot).Suddenly I am getting this error on boot:- kernel panic - not syncing: Attempted to kill inint ! PId: 1, comm: init not tainted 2.6.32.-279-5.2.e16.x86_64 #1 call ...
0
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1answer
25 views

Boot failure with Kernel 4.x

My HP Workstation Z820 is not booting with Kernel > 3.9x Trying to update to 15.10 or 16.04 fails. New install of 16.04 from CD fails also - see image..
1
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1answer
100 views

Why so many linux-headers, even for absent images

I removed many of linux-images of 3.13.0-x versions, I left few versions installed. ~ > dpkg --list | grep linux-image rc linux-image-3.13.0-83-generic 3.13.0-83.127 ...
1
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1answer
28 views

why I can't intall kernel sources from repository

I was trying to install VirtualBox in my machine. I found that I need the kernel sources to do so. To see which kernel sources I needed I checked uname -r which gave: 3.2.0-59-generic-pae The first ...
0
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1answer
223 views

Kernel build 4.4.0.22 decreases battery life (16.04 LTS)

My battery life was fine when I installed 16.04 LTS (clean install) on my Lenovo z51-70, but after a regular software update or build to kernel, from 4.4.0.21 to 4.4.0.22, it has almost halved (1.50 ...
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0answers
15 views

Is linux-generic installed when linux-signed-generic is installed?

Similarly is linux-lowlatency installed when linux-signed-lowlatency is installed? Signed images seem to depend on regular images, but that is not the case with meta packages. So it is not technically ...
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0answers
36 views

Is there an efficient and safe way to remove VirtualBox kernel modules for uninstalled kernels

I used sudo apt-get autoremove --purge to remove old kernels in Ubuntu 14.04. And this works fine as long as they are marked as automatically installed but it said that it could not remove the ...
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4answers
107 views

What other software is available to remove old files/kernels to increase space and cleanup drive?

Like many others users, I need to remove files/kernels to increase space because I'm getting the error message that says I can't update because I have don't have enough space in /boot. I've searched ...
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0answers
102 views

Asus & UBUNTU | Touchpad doesn't work at all

I have a brand new ASUS GL552VW, trying to install UBUNTU 14.04 on it. After installation the touchpad doesn't work at all, neither shows up on xinput -list. (External mouse works.) The kernel was 3....
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1answer
88 views

End kernel panic: vfs: Vista unable to mount root fs on unknown-block (2, 0) HELP!

Newbie Downloaded torrent. Used UUI. Placed Ubuntu on appropriately formated disk. I get this message at boot... 0.536889] kernel offset :disabled 0.563918] - - - [ end kernel panic - not syncing:...
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0answers
38 views

Ubuntu freezing when running on Bay Trail CPU

There is a known issue with aggressive power saving protocols causing Ubuntu to freeze and a tested work-around through limiting the max C state - https://bugzilla.kernel.org/show_bug.cgi?id=109051 ...
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0answers
17 views

Cannot use 'make' to install Digimend Driver on C720P running Crouton

I have little to almost no knowledge of Linux but I have been using Xubuntu 14.04 on a C720P Chromebook for almost a year now. Today I got a new graphics tablet "Huion 420" and I have been trying to ...
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0answers
54 views

Problem with apt-get for kernel sources

I am running Ubuntu desktop 16.04 I tried to get the kernel sources using the command apt-get source linux-image-$(uname -r) as recommended in the Ubuntu wiki. I got the error E: You must put ...
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0answers
156 views

Ubuntu 16.04 LTS will hang on boot. Booting from lived/USB fails. Boot repair does nothing

I have no clue what else to do. I upgraded from 12.04lts to 16.04 Lts (forced). I've tried everything I could find online to no avail. Whenever I boot there is a kernel panic, I've attached a picture ...
0
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1answer
53 views

Which is the “correct”/“official” kernel version? (server vs cloud-img installs)

I recently used official images to install bare metal servers and VMs (using a cloud image) and found out they install quite different kernels out of the box: 14.04.4 server iso (from here) installs ...
1
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2answers
82 views

Maximum compatible kernel version

I recently installed Ubuntu 16.04 LTS. Since, I was facing the suspend bug, I installed a newer kernel as suggested here. Even although the above mentioned link recommends to install kernel v4.4.8-...
1
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1answer
51 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
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1answer
180 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 ...
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0answers
94 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
67 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 [ 0....
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0answers
63 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 10)...
0
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1answer
211 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
49 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 ...
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2answers
68 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
564 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 ...
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2answers
125 views

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

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: linux-image-...
0
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1answer
59 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
47 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
20 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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1answer
81 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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1answer
126 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 ...
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0answers
228 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 ...
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1answer
189 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 ...