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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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Boot fails after upgrade to 18.04 Bionic Beaver within Virtualbox on Windows 7 host

I have a Windows 7 workstation and I use Virtualbox to run Ubuntu. This is with UI not a headless deal. I try to keep Virtualbox itself and all the Ubuntu packages up to date. I have Virtualbox 5.2....
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21 views

Ubuntu MATE boots in emergency mode after installation

I have installed Ubuntu MATE 18.04.1 LTS as the only OS on my iMac mid-2010. The installation went fine, but when it comes the time to boot, that's another story. It always boots in emergency mode. ...
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0answers
27 views

Ubuntu 18.04 freezes frequently

My Ubuntu worked fine with kernel 4.15.0-23, but after upgrading to new kernel, it often freezes. For example, when I input my password to login or when I click the network settings or something else, ...
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20 views

Purgatory issues (Make error 127) building kernel 4.15.0-32

When building kernel 4.15.0-32, there is an error claiming a file is missing, but the file does not exist in ubuntu's git. /bin/bash: ./scripts/ubuntu-retpoline-extract-one: No such file or directory ...
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1answer
32 views

Computer not very responsive

Sometimes, your computer may be slow to react - tasks take longer to finish, directories open slower, the kernel does not distribute the loads on the CPU cores very well... Sometimes, this affects ...
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10 views

Identify module name to blacklist

Everybody knows that any kernel module can be blacklisted via GRUB line: $module_name.blacklist=yes However, not everybody knows the exact name of module to blacklist. And that is the real problem! ...
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2answers
54 views

SoundBlaster Z and Kernel 4.18

I have a Creative Soundblaster Z SB1570 (yeah I know big mistake) and I read somewhere that the 4.18 kernel will have better support for this card. My question is how can I make it work earlier using ...
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1answer
28 views

package forward low performance and low forward speed in using Ubuntu as router

I have built a router based on Ubuntu Desktop 18.04.1(kernel: 4.15.0-32-generic x86_64). I followed this guide https://killtacknine.com/building-an-ubuntu-16-04-router-part-1-network-interfaces/ . ...
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25 views

How to install TP LINK T2U Archer 600 Wireless adapter on Ubuntu 18.04 [duplicate]

I buy the TP Link T2U AC600 wireless adaptor because they 'have' linux driver, but i try to install it and until now nothing. My machine have a Ubuntu 18.04 and the oficial drive work until kernel 3....
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1answer
138 views

Increase number of old kernels to keep on autoremove

Looks like my Ubuntu 18.04 keeps one old Linux kernel under /boot (so I have 1 old and 1 current kernel). Is it possible to increase the number of old kernels to keep when running sudo apt autoremove ...
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30 views

Ubuntu 18.04 upgrade error on dual boot with Manjaro

I've been running Ubuntu 18.04 as a dual boot with Manjaro for the past few months without problems, but recently I get the following error message when I try to install upgrades: linux-image-4.15.0-...
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0answers
12 views

How to do communication scheme on linux kernel mode driver and user mode appliation?

I am new to this linux driver development. This is my first program to do kernel driver. I try to write a kernel mode driver and a user mode application to read/write that kernel reserved area. I got ...
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0answers
13 views

Edit the bind file of a module

I am trying to bind a usb device, which is a wifi adapter, to the module manually, but when I try to edit (as root) the bind file in /sys/bus/usb/drivers/mt7610u it returns this sudoedit: bind: Input/...
2
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1answer
29 views

16.04 kernel Update breaks power saving - how to fix?

I used to have 7-9 hours of battery life on my system running 16.04LTS. But, recently, I noticed battery life halving to around 4.5 hours. It seems this has been going on since around May '18. ...
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2answers
661 views

Applications requiring JRE not starting

When I first started my computer this morning, I started getting successive System program problem detected alerts. This is after a software update last night. Now my IDEs (Intellij, Android Studio) ...
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1answer
283 views

No internet connection on kernels 4.4.0-131-generic and newer

My last kernel update with a working Internet connection is on 4.4.0-127-generic (Ubuntu 16.04). I have tried both 4.4.0-131-generic and 4.4.0-133-generic and it doesn't work whatsoever, there's no ...
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44 views

VMware player fails to compile modules on Ubuntu 18.04- GCC error?

When I start VMware Player I get the dialog box below. This is my current GCC version, but gcc-6 and gcc-5 are also installed. $ ls -l /usr/bin/gcc lrwxrwxrwx 1 root root 5 april 6 20:04 /usr/bin/...
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1answer
101 views

USB keyboard won't work after upgrading kernel to 4.18(Ubuntu 18.04)

I have a two month old Intel NUC8i7HNK, and when I saw Vega M support go out in kernel v4.18 I decided to make the unwise decision of upgrading the kernel of my perfectly stable 18.04 install to this ...
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2answers
64 views

Boot Disk Full: Server boots and works fine however i cannot uprade or remove old kernels

Greetings and salutations Question: I'm new to Linux and want to clean up my first ubuntu server which currently hosting a wordpress website, however have encounter error as I didn't clean up as I ...
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0answers
10 views

ASUS FX553VD keyboard backlight is not controllable (FN+Down, FN+Up keys)

Notebook: Asus FX553VD (Intel Core i5-7300HQ nvidia gtx 1050) I was investigating how to get this controllable, but did no luck with that. I find that there is maybe a fix, if you patch one file ...
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0answers
23 views

Cryptmount / setup is missing from initramfs

So silly me decided to do a "apt autoremove" which decided to remove cryptmount which if I was more vigilant would have realised from the error messages that came up during the uninstall that I should ...
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0answers
29 views

Ubuntu 18.04 Desktop Installing Error Kernel VMWARE Esxi 5.5

I am using VMWare Esxi 5.5, Ubuntu 18.04 LTS Live Server or Desktop is trying to install on this screen and does not go through the installation phase. What would be the reason for not going through ...
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2answers
141 views

If Linux is used as a kernel in most devices today then why does my Ubuntu suffer from driver issues? [closed]

After I switched to Ubuntu permanently, I was satisfied overall except for one thing which annoyed me a lot: driver compatibility. I use a ThinkPad L50 and extra mouse buttons do not work in Ubuntu. ...
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0answers
84 views

cc1: error: code model kernel does not support PIC mode

This is my simple drivers Makefile: obj-m+=hello_world_module.o KDIR=/lib/modules/$(shell uname -r)/build all: make -C $(KDIR) M=$(shell pwd) modules clean: make -C $(KDIR) M=$(shell pwd) ...
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0answers
19 views

Lenovo X1 Yoga - Ubuntu 18.04: Suspend not working and multiple errors

I experience problems with Ubuntu 18.04 running on Lenovo Yoga X1. After the laptop comes back from suspend, the touchpad is very laggy, and the laptop must be restarted to fix the issue. ...
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1answer
23 views

Recompiling Ubuntu kernel for MacOSX

I run Ubuntu 18.04 on my Macbook Pro and it runs just fine. During the installation I did select the option to install third party drivers for WiFi, graphics etc if needed. I'd like to recompile the ...
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1answer
26 views

powernow_k8 on Lubuntu 18.04 is flooding my kernel log with CPU frequency errors

I just installed Lubuntu 18.04.1 on an old desktop with an AMD Althon 64 x2 4800+ CPU, and while overall it's running fine, my kernel logs are getting flooded with CPU frequency errors from ...
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0answers
18 views

NVIDIA K4000 - only VGA on 4.15.0-30, but OK 4.15.0-29 (both Ubuntu 18.04 && DisplayPort-attached)

Up to yesterday I was happily running my NVIDIA K4000 card (using DisplayPort) on 4.15.0-29. Then 4.15.0-30 installed and now I only get VGA. Dropping back to -29, everything is fine again. nvidia ...
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1answer
23 views

re-enable wifi module after reinstall of linux-modules packages

When I uninstalled unused old kernels, I accidentally uninstalled those packages: linux-modules-4.15.0-23-generic linux-modules-extra-4.15.0-23-generic which disabled my wifi adapter. Now ...
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0answers
42 views

Kernel panic after failed attempt to update kernel

Yesterday my system got stuck while using the apt upgrade. I had to force reboot using the hardware button. Now while booting after passing the crypto setup it fails to open and opens a initramfs ...
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0answers
65 views

Enable wifi option not showing and wifi not working after installing Windows 10 with Ubuntu, wifi is working in Windows and but not in Ubuntu

I have tried so many solutions given by many experts on this forum but not able to connect wifi and Enable wifi option also not showing. It is working while boot from live USB Ubuntu but not working ...
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0answers
160 views

18.04.1 can't boot kernel 4.15.0-30-generic

I had a stable Ubuntu 18.04 install, but as of this morning it doesn't boot normally. Booting from different kernels gives the following results: 4.15.0-30-generic Boots to a purple screen, which is ...
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55 views

After login: [drm:drm_atomic_helper_wait_for_flip_done [drm_kms_helper]] *ERROR* [CRTC:37:pipe A] flip_done timed out

I am using Ubuntu 18.04 and +/- 1 minute after logging in my laptop gets extremely slow and I get lots of drm_atomic_helper errors (flip_done timed out). When switching to a text console everything ...
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0answers
14 views

Building a specific kernel package

I am building the complete kernel 4.15.0-24.26. However, sometimes I need to build just a single package, say, linux-modules-extra. How do I do that?
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2answers
24 views

After many upgrades to my server, still booting into old kernel

I am running a self-managed VPS, hosted by a local (Australian) company; recently I've upgraded in quick succession from 14.04 to 16.04 to 18.04. But through all these upgrades, although I've ...
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0answers
39 views

Dual installation partitioning issue on Lenovo laptop with Windows 10

I recently installed Ubuntu 18.04 alongside Windows on my HP laptop. No issues whatsoever. I got a new laptop (Lenovo) still Windows 10, however when I try to boot it off of a USB. I get to the ...
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1answer
49 views

How to find out if my ubuntu is using HWE kernel?

I have installed HWE kernel in my ubuntu 16.04 LTS machine but uname -a shows 4.13.0-39-generic kernel is being used. How do I find out if the HWE kernel I have installed is being used or not ?
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1answer
23 views

Gzip freezes during the execution of ./configure command

I am following the instructions of LFS book. I have unzip or untar many packages and install it. But when I do the same process for Gzip package It freezes. Everything is works fine until checking for ...
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1answer
24 views

Kernel panic after installing dual boot with Windows 10

I recently received a new work laptop (HP Elitebook) with Windows 10 installed. I want to install a Ubuntu distribution on a separate partition, and since it's my first time doing this on UEFI and ...
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0answers
19 views

How to read sensor data from VL53L1 sensor

Disclaimer: I am no expert in Ubuntu OS, much less on sensor reading in Ubuntu. I have a Physical Sensor VL53L1 from ST Microelectronics which is a ranging sensor. Here is the actual product. Now ...
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0answers
31 views

How do I boot into the newest kernel, with Ubuntu server 18.04?

I have spent the last little while running upgrades on my VPS from 14.04 to 16.04 to 18.04. However, each time the default grub menu is unchanged, so I'm still booting into an old kernel. My /boot/...
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0answers
96 views

Ubuntu 18.04.1 and Logitech wireless USB mouse problem

I have installed Ubuntu 18.04.1 from scratch and having USB problems. No USB device will work on either USB port. kernel: usb 1-5: new full-speed USB device number 13 using xhci_hcd kernel: usb 1-5: ...
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0answers
16 views

Generic kernel as default after installing lowlatency

I recently installed the linux-lowlatency kernel on a fresh Ubuntu 18.04 and noticed that it has replaced the generic kernel as the default boot option in GRUB. This is not what I wanted; instead, I ...
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0answers
28 views

How to enable power saving features for the i915 kernel module?

According to this post on Arch wiki the i915 kernel module has options which result in significant power savings. How to "pass" the following options to the i915 kernel module? enable_fbc=1 ...
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0answers
32 views

Kernel problem for first time user

I downloaded Virtualbox going in pretty much blind because I'm curious about Linux and want to have a safe environment to play around with it. I got the ubuntu iso off the website and set everything ...
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0answers
118 views

“Initramfs unpacking failed: LZMA data is corrupt” on Ryzen Platform (ASRock AB350M-HDV or A320M-HDV)

We have this problem using Ubuntu or Linux Mint on new Ryzen machines. Windows 10 works fine. Mainboard: ASRock AB350M-HDV CPU: AMD Ryzen 2200G The screen shows Initramfs unpacking failed: LZMA ...
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0answers
23 views

Boot time on Macbook Pro 11,1 hangs excessively due to unaddressable internal USB Card Reader error -62

Running a Mac OS X / Ubuntu 16.04 Dual Boot with Refind Some time in December (roughly around the time Canonical went from the 4.10 to 4.13 kernel on 16.04) from taking 5 seconds to load the kernel ...
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0answers
33 views

via Script or Ansible, install older kernel and boot to it on ubuntu 18.04 blocked by warning

For ubuntu 14.04 and 16.04 I can apt or dpkg remove the running kernel, install an older kernel and use update-grub to modify the kernel for next boot to the only one available with upgrade/downgrade ...
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1answer
44 views

Error while compiling bcmwl-kernel-source

Recently, the WiFi on option on my Ubuntu 16.04 disappeared. I figured that bcmwl-kernel-source needed to be updated so what I basically did was: sudo apt-get upgrade When the upgrade reached ...
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8 views

x86_64 Architecture with no Kconfig in /arch/x86_64 directory

Running Ubuntu 16.04 with 4.4.0-130-lowlatency kernel. unname -m returns and architecture of x86_64 However in the /arch/x86_64 directory there is no Kconfig. Am I missing something? (Trying ...