Questions tagged [kernel]

Questions concerning the Linux kernel in Ubuntu. Issues may including upgrading and installing kernels, compiling, patches, and kernel modules.

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nvidia modules are missing after each kernel upgrade in 18.04

after each kernel upgrade, when I reboot I only get a blank screen it looks like the proprietary nvidia kernel modules do not get auto recompiled I have to boot into recovery mode and do dpkg-...
0
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0answers
11 views

Function keys not working after installing generic Kernel 4.18.0 on Ubuntu 18.04.3

I have installed a new kernel 4.18.20 from kernel.ubuntu.com using dpkg and removed the kernel 4.18.0, which previously came with Ubuntu 18.04.2. Now while using the new kernel, I cannot lock my ...
0
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1answer
73 views

Error is running windows 10 over the virtual box [duplicate]

Failed to open a session for the virtual machine Windows10. The virtual machine 'Windows10' has terminated unexpectedly during startup with exit code 1 (0x1). Result Code: NS_ERROR_FAILURE ...
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0answers
42 views

How could I write a kernel module to extend the radiotap fields?

According to the man page, Ubuntu only supports the following fields: IEEE80211_RADIOTAP_TSFT IEEE80211_RADIOTAP_FLAGS IEEE80211_RADIOTAP_RATE IEEE80211_RADIOTAP_CHANNEL ...
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0answers
77 views

No wifi 19.04 kernel 5.0.0-23 [duplicate]

Further to my problem No WiFi after upgrade (Realtek RTL8188CE): I ran wireless-info, as instructed, found on this recommended page: My wireless/WiFi connection does not work. What information is ...
1
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3answers
109 views

Not able to start the Ubuntu

I upgraded my Ubuntu from 18.04 to 19.04, but when I'm starting the system, it isn't starting. Just a purple screen is showing up. When I tried recovery mode, it shows a black screen with the ...
-1
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1answer
35 views

usb3 bug report <disconnects all devices> [on hold]

I had this bug in arch linux , i switched to manjaro and i had it there too. Then i switched to ubuntu and i have it here too. It's kernel related and i can understand that since kernel is very ...
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0answers
37 views

Kubuntu 19.04 boot up with unable to enumerate usb error and device descriptor read/64, error -32

I've installed Kubuntu 19.04 on my laptop and increased the size of my root partition recently,also I'm using Kubuntu ppa for latest kde updates. Here is the log: ak@ak-pc:/var/log$ cat dmesg ...
2
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1answer
1k views

“Compression type 0x3 not supported”

So I'm running Ubuntu 18.04 on a btrfs root. I recently rebooted because I got a notification about "restart required" after an update. The last few times I restarted this server, I had an issue where ...
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0answers
22 views

system crashing during update installation: how do I go back?

I have been running Ubuntu 16.04 LTS on a dual boot system for a long while and decided to download and install a proposed system update which caused a crash while installing and left me with a grub ...
0
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0answers
25 views

How about change value of /sys/devices/system/cpu/kernel_max?

As title of question, Could you help me change value of this file? Information: Ubuntu 14.04.6 with kernel version 4.4.xxx has kernel_max=511 Ubuntu 14.04.2 with kernel version 3.16.xxx has kernel_max=...
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0answers
41 views

Error while installing anything - /boot/ [duplicate]

I'm new in ubuntu server or any server (in fact) probably I've done something wrong. I'm trying to install docker and when I run: sudo apt-get install \ linux-image-extra-$(uname -r) \ linux-image-...
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2answers
4k 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 ...
1
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0answers
40 views

Virtualbox not starting after downgrading kernel on my laptop

I was having graphics issues with my laptop on Xubuntu 18.04LTS with kernel 4.15.0-58-generic, so i downgraded to 3.19.0-59-generic. That fixed the graphics issues, but now virtualbox won't start ...
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1answer
3k views

16.04 LTS and Virtualbox 5.2

I am struggling with making Virtualbox 5.2 work with 16.04 LTS. I've read everything posted on the topic here. The installation path that resulted in moving forward was via .deb package from Oracle ...
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0answers
39 views

Please peer review my non working Wireless 8260 driver fix on 16.04

Community, I maintain many computers that run 16.04. The hardware builld on the machines is as close to identical as I can make it. These machines are distributed all over the place and in many ...
2
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1answer
3k views

What is kthrotld?

I'm struggling to find any documentation online relating to process number 54. root 54 0.0 0.0 0 0 ? S< 11:24 0:00 [kthrotld] root 11385 0.0 0.0 12944 992 pts/...
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0answers
40 views

nvidia-418 now depending on kernel 5.0.0 on 18.04LTS

I have been using nvidia-driver-418 from graphics-drivers PPA on Ubuntu 18.04 happily for half a year now. However since last week it is suddenly depending on nvidia-430 and Linux kernel 5.0.0. I do ...
2
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2answers
396 views

Ubuntu 18.04 black screen on reboot after upgrading to Linux Kernel 5.0?

My Lubuntu 18.04 (as a VirtualBox 6.0.10 virtual machine) is just upgraded to Linux pbox 5.0.0-23-generic #24~18.04.1-Ubuntu SMP Mon Jul 29 16:12:28 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux with an ...
0
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0answers
22 views

How to block Ubuntu to install upgraded kernel [duplicate]

I've the Surface Pro 2017 and I installed a custom kernel compiled for it. Now, I run Ubuntu every time with this custom kernel but every time that there is an upgrade of the linux kernel, the package ...
3
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2answers
2k views

How to know where in /dev/ is a USB keyboard loaded?

To be precise, when you plug in a USB storage device, it is loaded in sd something, but where is a usb keyboard loaded in /dev/?
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0answers
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Fresh installed Lubuntu 16.04. Installed updates now white screen

I currently just installed Lubuntu 16.04 onto my Dell inspiron 600m. All was good then software updater stated updates need to be installed. I did so and now everytime it boots into a blank white ...
6
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2answers
20k views

AMD Catalyst Driver installer failing at DKMS

I am following these instructions to install the fglrx drivers. When I am running sudo sh amd-driver-12-6-x86_64.run it tells me fglrx is already installed; even though I ran the commands to remove it....
0
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1answer
28 views

How to stop systemd.tmfiles-clean service command line

The daily job to clean temp files is causing a crash (hard reboot necessary), how can I disable it? Which file do I need to modify and add "Disabled" in the configuration? The exact message in the ...
0
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1answer
25 views

More than 9 NVME devices running start to bottleneck in linux, Ubunutu 16/18

We have a server with 24 custom NVMe devices connected ( the company i work is developing a custom ASIC for hardware video transcoding utilizing NVMe as a trasport) We are interacting with our NVMe ...
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0answers
24 views

Have to build media kernel frequently

I wonder if anyone could help me. I have to build custom media drivers for my DVB devices to work correctly. When I do this all works great, but the problem is I find myself having to redo it ...
0
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1answer
127 views

Issue with linux-image-5.0.0-13-generic file during installations

Forgive me because I am a very excited, albeit brand new Linux user. I started having issues with installs a couple of days ago. I also cannot do any backups. The errors I get all have to do with ...
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0answers
37 views

How do I get my laptop to wakeup only by power button with delay on Liquorix kernel?

Lubuntu 4.15.0-55-generic on Dell Venue can be easily configured to wakeup only by power button. And it should be pressed during 4 s. This prevents sudden wakeups in a bag. After upgrading to 5.2.0-8....
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0answers
53 views

Disables amd gpu kernel

[5.205584/ [drm:amdgpu_init [amdgpu]] *ERROR* VGACON disables amdgpu kernel modesetting. Hello I am having this problem on my machine: I3 7100 / Asus H110M-D / RX 460 4GB / 8GB / SSD 480 and HD 1TB. ...
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0answers
41 views

What would you like to do about menu.lst?

every time I update my Ubuntu 18.04 server I have a dialog box that opens and says A new version of /boot/grub.menu.lst is available, but the version installed currently has been locally modified. ...
6
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1answer
3k views

What causes “PKCS#7 signature not signed with a trusted key”

I installed the nvidia-driver-410 package from the graphics-drivers ppa. I could not boot, with the following message repeated a few times: PKCS#7 signature not signed with a trusted key It looked ...
16
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5answers
47k views

Touchpad not working on Ubuntu 18.04

I just newly bought an ASUS laptop. The touchpad works fine on Windows, then I installed Ubuntu 18.04. The touchpad however does not work. touchpad works fine on Windows 10 touchpad does not work on ...
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0answers
35 views

Kernel upgrade to 5.0 and SELinux

With the recent possibility to use Kernel 5.0 with Ubuntu 18.04.03, i upgraded the kernel. SELinux, is also installed and when i use new Kernel, it seems as if systemd itself is unlabeled since every ...
2
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1answer
51 views

How can I clean up devices such as `media*` or `tty*` under `/dev` properly from terminal?

I am running Ubuntu 18.04.2 LTS on a DELL XPS13 9343 and seem to be suffering from a kernel bug (reference: https://www.spinics.net/lists/linux-media/msg135812.html), which leads to the problem that I ...
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0answers
34 views

Problems with video after kernel 5 update on ubuntu

My specs: Intel I5 7600k, Corsair 8GB RAM, Nvidia 1050 TI, Mobo Asus H110M-A/M.2 After kernel 5 update my Ubuntu won't inicialize. I can't even to see the the login windows. Everything I can see is ...
0
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1answer
129 views

Simple systemd service to lift kernel lockdown - permission denied

So, I have spent a long time trying to fix a simple systemd service which can lift the kernel lockdown. After a lot of time spent researching and googling I couldn't find an answer to my question. ...
2
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1answer
7k 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 kind ...
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0answers
34 views

error while installing kernel 2.6.10 [closed]

Running depmod. depmod: WARNING: could not open /lib/modules/2.6.32-02063270-generic/modules.builtin: No such file or directory update-initramfs: deferring update (hook will be called later) Failed to ...
2
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1answer
4k views

How do I fix this error? dkms.conf: Error! No 'BUILT_MODULE_NAME' directive specified for record #0 Error! Bad conf file

I am using Ubuntu 14.04.1 LTS Does anyone know how to fix this dkms.conf error? dkms.conf: Error! No 'BUILT_MODULE_NAME' directive specified for record #0. Error! Bad conf file. File: does not ...
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0answers
14 views

bpftool: unable to understand lpm_trie keys

I am entering the following commands: $ sudo bpftool map create /sys/fs/bpf/routes type lpm_trie key 6\ value 1 entries 256 name routes flags 1 $ sudo bpftool map update id 194 key 8 0 0 0 0 10 ...
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0answers
106 views

Can't Remove Linux image which caused login loop

sudo dpkg --list 'linux-image*' un linux-image <none> <none> (no description available) rc linux-image-4.15.0-45-...
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0answers
36 views

DRIVER PROBLEM WITH UBUNTU [duplicate]

A few months ago, I bought a Dell Linux laptop with Ubuntu 14.04 LTS pre-installed with all drivers installed. So when dist updates came all my drivers were gone. So i factory reset it and it is back ...
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0answers
40 views

Why I have both HWE and non-HWE kernels in Ubuntu 18.04 [duplicate]

In Ubuntu 18.04 I have both HWE and non-HWE kernels installed. I only use the HWE kernel (5.0) and in the past I had removed the non-HWE kernel (4.15, both images and headers). However, after some ...
19
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4answers
15k views

Where is the changelog for Ubuntu kernels?

Where can I find the changelog between versions of the kernel released for Ubuntu 10.04? Note that I need to find the changelog for 10.04 from an 11.04 system, so if I have to, I can run a VM for ...
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0answers
72 views

Failed to install ubuntu kernel package

I have built Linux images, headers and tools using the steps mentioned in Ubuntu build pages. Following are the deb packages I got; linux-headers-4.15.0-51-generic_4.15.0-51.55_amd64.deb, linux-...
1
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1answer
125 views

Acer laptop fails to boot with new kernels 5.0.0-23 and 5.0.0-25

My Acer laptop (Ubuntu 18.04.3 LTS) fails to boot with new kernels 5.0.0-23 and 5.0.0-25. It boots normally with the old kernel 4.18.0-25. Kernel 5.0.0-23 was installed prior to rebooting on 8/6/19. ...
1
vote
2answers
179 views

Kernel compilation fails against “spl-dkms_*.deb” package not found!

I'm attempting to compile the kernel using this guide but I got an error. cp -rp "/home/stibbons/build/ubuntu-disco/debian/linux-headers-5.0.0-15-generic/usr/src/linux-headers-5.0.0-15-generic" "/...
2
votes
0answers
19 views

Does apt mount /boot on kernel updates?

I'm a Gentoo user. On my setups, I usually set the noauto flag for the /boot partition. Maybe its just some good 'ol fashion paranoia, but I like not to mount /boot unless really needed. Because I ...
1
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0answers
53 views

Why “maybe-ubiquity” on default kernel command line?

On Ubuntu Server 18.04.03 LTS, fresh install, I wanted to do edit some kernel command line settings. In /etc/default/grub, I found the following set: GRUB_CMDLINE_LINUX_DEFAULT="maybe-ubiquity" I'm ...
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0answers
24 views

Ubuntu kernel panic [duplicate]

I've got this kernel panic issue.