Questions tagged [kernel]

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

Filter by
Sorted by
Tagged with
0
votes
2answers
23 views

Which kernel should I update to Ubuntu 18.04?

I just installed Ubuntu 18.04 on a new Lenovo IdeaPad 130 and it turned out that the Linux kernel 4.18 didn't support my touchpad (ELAN 0620), but it is supported in other kernels (4.19 and above). So ...
0
votes
0answers
12 views

Pressing SysReq key (alone or with other keys) takes me back to X session

Summary: When I switch to a tty, if I press SysRq and release, I'm taken back to my X session. When I try any "Magic SysRq" commands other than Alt + SysRq + space or Alt + SysRq + p, no "magic" ...
2
votes
1answer
36 views

How to fix kernel issue after upgrading from 18.10 to 19.04?

After upgrading to 19.04 from 18.10 - I've started seeing an error revolving around linux-image-4.18.0-24-generic and seems to cause me from updates as well updating grub of course... Has anyone ...
0
votes
1answer
38 views

How to install the latest Linux Kernel, Mesa, Intel/AMD GPU drivers, and Xorg.. on Ubuntu 18.04 LTS? [duplicate]

On Ubuntu 18.04 LTS, how to get: Linux Kernel: 5.0 or newer. Mesa Library: 19.0 or newer. Intel Graphics Driver: ...? (latest) AMD Graphics Driver: ...? (latest) Xorg: ...? (latest) I have two ...
2
votes
1answer
134 views

Different kernel versions across different machines

I have 2 different machines, with the same OS version, and the same sources list. $ lsb_release -a LSB Version: core-9.20170808ubuntu1-noarch:security-9.20170808ubuntu1-noarch Distributor ID: ...
-1
votes
0answers
29 views

Specific keys on keyboard stop responding at random times [on hold]

For a while I'm struggling to figure out and fix this issue on my portable laptop (Asus TP200SA, intel atom, 2GB) running ubuntu 18.04 and Linux Mint 19.2. Kernel 4.10.0-38 At random times, a ...
0
votes
0answers
12 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 ...
-1
votes
1answer
43 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 ...
0
votes
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
votes
0answers
27 views

How about change value of /sys/devices/system/cpu/kernel_max? [on hold]

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=...
0
votes
0answers
46 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 ...
1
vote
0answers
45 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 ...
1
vote
0answers
41 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 ...
1
vote
0answers
45 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 ...
0
votes
0answers
45 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 ...
0
votes
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 ...
1
vote
0answers
89 views

No wifi 19.04 kernel 5.0.0-23

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 ...
0
votes
0answers
14 views

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 ...
0
votes
1answer
27 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 ...
0
votes
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
votes
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
votes
0answers
54 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. ...
1
vote
0answers
38 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....
0
votes
0answers
42 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. ...
0
votes
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 ...
0
votes
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 ...
2
votes
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 ...
1
vote
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 ...
0
votes
0answers
115 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-...
1
vote
0answers
41 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 ...
1
vote
1answer
137 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. ...
0
votes
0answers
76 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-...
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
vote
0answers
65 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 ...
-1
votes
0answers
24 views

Ubuntu kernel panic [duplicate]

I've got this kernel panic issue.
0
votes
0answers
50 views

Ubuntu 18.04: Wireless broken after updating to kernel-hwe-5.0.0.23

Recently my Ubuntu 18.04.3 LTS system was updated to kernel-hwe-5.0.0.23. I need to use kernel-hwe for my HP 14-cm0202ng notebook because the wireless driver in kernel 4.15 is not up-to-date. The ...
0
votes
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 ...
0
votes
0answers
44 views

How to solve the “Building kernel modules”? during nvidia driver install

My computer has an RTX2080 ti external graphics and is based on Ubuntu 18.04. I am trying to: Install CUDA 10.0, and the corresponding graphics driver 410.57 to use tensorflow gpu. I did chmod + ...
0
votes
1answer
131 views

Ubuntu Desktop 18.04 LTS kernel does not upgrade

After recent update from Ubuntu 18.04.2 LTS (moving from base version of 18.04 GA kernel), kernel is not getting updated to 4.15.0-55.60 $ uname -r 4.15.0-50-generic Also tried to move to HWE kernel ...
0
votes
0answers
29 views

How I can Enable mac80211 module while kernel rebuild

I want mac80211 module for mesh network. I am using nano pi, and my linux kernel is 4.14.111. But, I cannot find mac80211, So, I want to re build kernel with re configuration. How I can configure ...
2
votes
2answers
43 views

Long kernel load time

Running Ubuntu 18.04 on a Dell XPS 9370, I'm getting kernel load times of over 30 seconds. systemd-analyze output: Startup finished in 12.834s (firmware) + 1.331s (loader) + 33.643s (kernel) + 11....
0
votes
0answers
55 views

How to solve a problem with package linux-headers-4.15.0-47?

Thank you for helping in advance, I get all the time similar massage when I try to sudo apt upgrade or install sth. dpkg: unrecoverable fatal error, aborting: files list file for package 'linux-...
0
votes
0answers
44 views

sometimes when xubuntu 18.04 is turned off it hangs

info: task systemd shutdown:1 blocked for more than 120 seconds Not tainted 5.0.0-20-generic #21-Ubuntu «echo 0 /proc/sys kernel/hung_task_timeout_secs» disables this message
1
vote
1answer
535 views

How can I upgrade the Ubuntu 18.04.3 kernel to 5.0 [duplicate]

I'm using Ubuntu 18.04.3 LTS with kernel version 4.15.0-55-generic. How can I upgrade the kernel to 5.0? I have run the update-manager -d command already.
2
votes
0answers
84 views

Suspend issue on kernel 5.0

So recently I've been having issues with suspend on both of my ubuntu machines but the laptop is more important so I'll start there. My laptop on 18.04.2 recently got an update for kernel 5.0.0-23. ...
0
votes
1answer
89 views

'overlay' not found as a supported filesystem on this host when running dockerd

I'm trying to install Docker on Ubuntu 16.04. When I run 'sudo dockerd' I get the following output: INFO[2019-08-07T11:53:16.596291506+02:00] Starting up INFO[2019-...
0
votes
0answers
67 views

Preventing CPU throttling by kernel / Ubuntu

I'm having an issue with my CPU throttling down. I am on an A8 Quad Core machine with four 3 GHz processors. The model is a AMD A8-3870 APU with Radeon(tm) HD Graphics About 10 to 15 minutes after ...
1
vote
0answers
100 views

problems downloading bcmwl-kernel-source

When running sudo apt-get install bcmwl-kernel-source [sudo] password for carter: Reading package lists... Done Building dependency tree Reading state information... Done The following ...
0
votes
1answer
64 views

Linux Kernel current version ahead of Ubuntu [duplicate]

Why is the Ubuntu kernel (4.1.5) so far behind the current Linux Kernel (5.2.6, soon to be 5.3)? I would love to use Ubuntu, but my development work depends on solid kernel code.
0
votes
2answers
95 views

Which kernel is LTS for Ubuntu 18.04 and how to install it?

I had issues with Nvidia 8600m and kernel 5 and I want to go to a stable setup. Which kernel is LTS and works with Ubuntu 18.04 and where do I download it from?