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

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6
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3answers
3k views

When will 4.2.0 kernel be available for 14.04 LTS?

I wonder when will linux-image-generic-lts-wily be available for Trusty? Are there any ETA?
1
vote
0answers
19 views

On booting I get Grub menu instead of splash page

I am running Ubuntu MATE 15.04 on HP Spectre X360 [no dual boot] I have had troubles with booting and have been able to solve Software Updater Problems getting rid of redundant kernel files. I am ...
0
votes
0answers
24 views

Toshiba Satellite A660 Backlit keyboard does not work with kernel 4.2

This question was already asked quite a while ago. I am interested if anyone has got this running. I am trying to figure out how to enable the illuminated keyboard on my Toshiba Satellite A660. I am ...
5
votes
1answer
8k views

14.04 : How to disable discrete graphics card

I know 14.04 has Kernel 3.13 and is supposed to be better at dynamic power management. My problem is the estimated remaining time keeps changing. But on an average I see 5 hours. On same machine on ...
0
votes
0answers
28 views

Kernel requirements for open-vm-tools-lts-trusty

I've lately installed open-vm-tools-lts-trusty on an Ubuntu 14.04 system running kernel 3-13.0-32-generic. Version of tools appears to be 2:9.4.0-1280544-5ubuntu6.2 All was working well, e.g., I ...
0
votes
0answers
46 views

Xubuntu: Current kernel version at 16 January 2016?

I hope this question is appropriate for askubuntu.com - apologies if not. In Xubuntu 14.04, I understand that: uname -a should give (at least) kernel 3.13.0-74-generic #118-Ubuntu, but I have ...
1
vote
1answer
206 views

Unable to compile Wireless Driver for Linux Driver Asus PCE-N53 (Ralink RT5592 chipset)

I have previosuly compiled this driver on what I beleive was an older kernel. However I am now on 15.10 and just can't figure it out. dylan@xaelah:~$ uname -r 4.2.0-18-generic Here is the output ...
1
vote
2answers
63 views

Ubuntu 14.04 32bit OS with 4g physical ram and pae still shows 3.2g ram

I upgraded 2gb memory to 4gb on Lifebook 6025. I followed instructions for pae to recognize the 4gb by doing sudo apt-get install linux-headers-server linux-image-server linux-server edit grub by ...
0
votes
0answers
15 views

How to save kernel messages after crash

Is there a way to enable something like Android's "last_kmsg" feature, where kernel messages are written to a file that can be read after a reset? The message I'm trying to save gets printed to the ...
9
votes
3answers
50k views

Cannot boot because: Kernel panic - not syncing: Attempted to kill init!

This is what I've got. I cannot boot and I see the two of three little lights on the keyboard blinking all the time and the cooling is working on full power, almost. I saw in other askubuntu topic ...
0
votes
1answer
35 views

Good books on learning Unix and Linux [duplicate]

I know the basic way and basic commands of linux and I want to be a professional on it. Please suggest me some of the best books on linux which teaches the structure of Linux and Linux kernels, tricks ...
1
vote
0answers
75 views

After Upgrading to 15.10 from 15.04, EC2 Webservers Have Become Very Unstable

I have a variety of Ubuntu machines running in production, with about 30 that were upgraded from 15.04 to 15.10. With most of the machines, the upgrade has been a breeze and everything has functioned ...
0
votes
0answers
9 views

Multicraft + Kernel Change?

Hey guys hoping someone can help, I'm currently using kernel 3.14.32-xxxx-grs-ipv6-64 have been having an issue that Multicraft stats such as CPU and RAM usage aren't showing for users. (this) ...
2
votes
1answer
445 views

pci-stub not claiming radeon card, only the audio device, radeon driver claiming graphics instead

im trying to bind my spare radeon card to pci-stub on kubuntu 15.04, ive got this for my boot options dmesg | grep pci-stub [ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-3.19.0-15-generic ...
0
votes
0answers
20 views

Kernel version after reboot

Is there a way to retrieve the kernel version that will be booted on next reboot (CLI preferred)? Probably the default kernel version would be fine too.
1
vote
2answers
270 views

What might cause “version 'KERNEL_VERSION' has bad syntax: version number does not start with digit” during update-initramfs -u

When I run sudo update-initramfs -u I get the error output dpkg: warning: version 'KERNEL_VERSION' has bad syntax: version number does not start with digit update-initramfs: Generating ...
0
votes
0answers
26 views

Ubuntu 14.04 jitter/stutter

im running ubuntu 14.04 on an Intel NUC6i3SYH. I have experienced a lot of random jittering/stuttering on my screen, especially when watching videos, in the form of a few black or white lines flashing ...
5
votes
6answers
1k views

Leave old kernels installed could be dangerous?

I have been using ubuntu for almost 2 years now and I always encounter guides on the internet on how to uninstall old kernel versions. Even here in Ask Ubuntu there are many questions in this way. ...
0
votes
2answers
97 views

kernel 3.18.24 crashes on Ubuntu 15.10

Hi we are facing kernel crashes after 4-5 days. We are using 3.18.24 kernel because of lacking drivers on BlackMagic devices (which are not ready for 4.2.0) - we suspected if the problem isnt coming ...
48
votes
4answers
160k views

Boot Error - ACPI PCC Probe Failed

ACPI PCC Probe Failed is the error that pops up instead of the default GRUB loader after I updated my kernel to 3.19. I searched around and couldn't find much information except that it is a known ...
1
vote
2answers
85 views

Kernel generic vs low-latency vs Zen

I would like to move from Windows to Ubuntu 14 LTS and i would like to ask you which kernel should i use. I will be using PC for surfing, programming, livestreaming (twitch), recording videos on ...
7
votes
4answers
14k views

How do I update my nvidia modules after updating my kernel?

Every time there's a kernel update, nvidia graphics drivers stops working because there's not a valid kernel module. What is the ubuntu way to 'recompile' the nvidia module for the new kernel? ...
5
votes
2answers
11k views

DisplayLink USB 3.0 Not working on Ubuntu 14.04LTS

I noticed this might be yet another DisplayLink outcry - but I thought I give it a go anyway. So the usual story - I have got a DisplayLink adaptor Kensington USB3.0 Video Adapter, and doesn't look ...
0
votes
2answers
252 views

14.04 64x “Kernel panic - not syncing: Attempted to kill init! exitcode 0x000000100”

After a power outage (unplanned shutdown), attempts to reboot Ubuntu Studio 14.04 are greeted with the subject line. Additional lines include; CPU: 7 PID 1 Comm: run-init Not tainted ...
0
votes
1answer
43 views

Cannot get kdump to dump a vmcore using crashkernel

I'm trying to get kernel crashdump to work properly in Ubuntu 15.10 with the stock 4.2.0-22-generic kernel. I have followed the methods described here and here precisely. But, when I manually trigger ...
2
votes
1answer
87 views

Compiling custom kernel with debug symbols

I have Ubuntu 14.04 with Linux-3.14.3-rt51 kernel. I need to use Systemtap so I compiled my kernel with the following options chosen during make menuconfig: General setup [*] Kprobes [*] ...
4
votes
1answer
71 views

Why so many kernel updates lately?

The last two kernel updates have had a kernel pushed out followed by an updated kernel literally the next day. What's going on with this? And is this likely to continue, i.e. should we start waiting ...
1
vote
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 ...
-1
votes
0answers
51 views

Ubuntu 15.10 Freeze on Booting every second times

i´ve installed Ubuntu 15.10 on my new Lenovo Yoga 300-11iby. When im starting the notebook it stocks while booting after 3 seconds with a black screen. When im restart with STRG+ALT+ENTF then i can ...
3
votes
2answers
701 views

How do you remove old kernels from the terminal

I have been going through various questions about how to clean up old Linux kernels. They all seem to have different answers and they are old, so someone is bound to say the question is too old and ...
2
votes
1answer
692 views

Kexec does'n work

I've got some problem with kexec -e command: I use kexec -l to load a kernel, or pxe-kexec. Then I type kexec -eand the result is a complete freeze of the system (no keyword works but ctrl+alt+canc ...
0
votes
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. ...
0
votes
0answers
48 views

`grep -r` command leads to kernel panic

Every time I run grep -r something . in vim command line mode, the system shows kernel panic message. And if I run it outside vim, the system totally freezes. I can do nothing. Even Ctrl-Alt F1-F12 ...
0
votes
1answer
50 views

kernal panic not syncing: VFS unable to mount root fs on unknown-block(0,0)

I upgraded from 15.04 to 15.10 and received some system errors. Reinstalled 15.10 without checking the format box -- so all user files untouched Now receive "end kernel panic not syncing: VFS unable ...
1
vote
3answers
4k views

Ubuntu 13.10, kernel 3.11 blank screen issue with hybrid graphics

On my HP Envy, which has both an Intel on-chip graphics card and an Nvidia Geforce: *-display UNCLAIMED description: 3D controller product: GK208M [GeForce GT 740M] vendor: NVIDIA ...
0
votes
0answers
27 views

I am using ubuntu 14.04 LTS . I am trying to compile simple Kernel Module Program

but when I run Makefile by "make" command this error terminates the compilation Whats the solution to this issue: Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: -fstack-protector not supported by ...
0
votes
0answers
206 views

Not Able To Compile Hello World Kernel Module

I am currently following this tutorial of making a makefile for the simple kernel hello world module. However, I have not been able to do so even after searching on the internet thoroughly for several ...
3
votes
1answer
5k views

Fastest way to reload graphics driver module?

I am trying to get my way around on graphics driver development, in this case for modifications on a DRM kernel module, called gma500_gfx. Every time when I have made a change to this driver, I start ...
1
vote
0answers
22 views

I have type “ sudo sensors-detect” and my display become muddy

I am using Lenovo Z 50-70 laptop with i5 4210U processor. I type sudo sensors-detect and yes to all options. This make my display muddy. How can I get back to default configuration. Using Ubuntu ...
2
votes
2answers
77 views

How do I make space on /boot?

How do I free up space on /boot? ls /boot/ abi-4.2.0-16-generic memtest86+.bin abi-4.2.0-19-generic memtest86+.elf abi-4.2.0-22-generic memtest86+_multiboot.bin ...
1
vote
1answer
42 views

May a Linux kernel package have config files that remain in storage after removing the package?

Is there any use in purging a kernel package, instead of removing? I ask this, because automatic removal of packages does not purge all packages it removes. (I have setup this automatic removing in ...
0
votes
0answers
11 views

Is there a pre-compiled version of Ubuntu that installs on computers with 32bit EFI? [duplicate]

My task is getting a Linux distribution (preferably Ubuntu) to work on my HP Envy X2. It has an Intel Atom CPU that supports 64bit architecture, but a 32bit EFI. The current operating system is ...
1
vote
1answer
64 views

Wi-Fi dropping intermittently on Dell XPS13 (2015) - cfg80211 dmesg warning and stack trace

Every couple of minutes my Wi-Fi connection is dropping, and this is accompanied by a dmesg warning and stack trace like this: [ 2680.040170] ------------[ cut here ]------------ [ 2680.040197] ...
0
votes
1answer
21 views

PAE boot failures [duplicate]

I tried loading Ubuntu 14.04.3 onto an older Dell Inspiron Laptop and I get the following message: WARNING: PAE disabled. Use parameter 'forcepae' to enable at your own risk! This kernel requires the ...
2
votes
2answers
290 views

How to compile and install custom mainline kernel

I'm running Ubuntu 15.10 on a new laptop but in order to get proper full support for this hardware I apparently need the 4.4 kernel + a custom patch. See here if you're interested in the details. I ...
23
votes
5answers
95k views

How can I boot with an older kernel version?

The latest kernel is causing problems with my sound, which worked fine with an older version. As I have only Ubuntu installed, Grub is not getting displayed while booting. How can I manually choose my ...
0
votes
1answer
93 views

BTRFS on Ubuntu 14.04.3

I know, I know, I know. Bear with me. BTRFS is listed as stable now (wiki page updated Nov of 2015) https://btrfs.wiki.kernel.org/index.php/Main_Page#Stability_status The filesystem disk format ...
0
votes
0answers
26 views

Kill process: SIGKILL does not work

There is a strange thing that never happened to me. kill -9 PID does not work. The process is still there. I tried also with htop -> F9 -> Enter but nothing. How can I resolve this problem? ...
1
vote
1answer
436 views

ACPI : EC: Fail in evaluating the _REG object of EC device. Broken bios is suspected

I can't install linux with kernel over than 4.x on my computer. (MSI GP72-6QE-087XFR Leopard Pro) Tried : Ubuntu 15.10, debian 8 and linux mint 17.3. This is saying: "ACPI : EC: Fail in evaluating ...
2
votes
0answers
64 views

Xbox One controller not working on Ubuntu kernel 4.3.3

Before anything else, yes I have read most of the other threads on the site about Xbox One controllers. They have not helped. I have my Xbox One Controller on Ubuntu 14.04 with linux kernel 4.3.3 and ...