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High CPU from kworker/0:x-kacpi_notify | |
Ubuntu 20.04 LTS | |
Update: this problem is fixed after I did "apt dist-upgrade" on 9/21/2020 | |
Update again: Acutally not fixed. It happened again after unplug/plug the usb-c hub. | |
I recently got a USB-C Hub (Targus ACA958USZ). When it's plugged in, the laptop gives high cpu from process | |
I've found a few USB-C hubs from various manufactures with the same problem. I think they are of the same chipset. |
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List of common exit codes for GNU/Linux | |
Exit Code Description | |
0 Success | |
1 Operation not permitted | |
2 No such file or directory | |
3 No such process | |
4 Interrupted system call | |
5 Input/output error | |
6 No such device or address | |
7 Argument list too long |
You might be surprised to see ifupdown creating a staging area for interfaces in /etc/network/interfaces.config.d
. The interface definitions there following the Debian interfaces file format are then carried into the sourced /etc/network/interfaces.d/
directory. It even creates a dpkg diversion on the /etc/network/interfaces
file to prevent changes on updates.
I venture to guess this approach is necessary to override existing configurations providing the connectivity. It's a delicate matter changing interfaces while connected to then reset networking without staging configurations.
Anyway this can get confusing for new users. Understanding how it works helps. Here's an issue post that explains the process a bit.
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INFO global: Vagrant version: 2.2.18 | |
INFO global: Ruby version: 2.7.4 | |
INFO global: RubyGems version: 3.1.6 | |
INFO global: VAGRANT_INSTALLER_EMBEDDED_DIR="/opt/vagrant/embedded" | |
INFO global: VAGRANT_INSTALLER_ENV="1" | |
INFO global: VAGRANT_EXECUTABLE="/opt/vagrant/embedded/gems/2.2.18/gems/vagrant-2.2.18/bin/vagrant" | |
INFO global: VAGRANT_INSTALLER_VERSION="2" | |
INFO global: VAGRANT_LOG="debug" | |
WARN global: resolv replacement has not been enabled! | |
DEBUG global: Loading core plugin: /opt/vagrant/embedded/gems/2.2.18/gems/vagrant-2.2.18/plugins/synced_folders/nfs/plugin.rb |
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INFO global: Vagrant version: 2.2.18 | |
INFO global: Ruby version: 2.7.4 | |
INFO global: RubyGems version: 3.1.6 | |
INFO global: VAGRANT_INSTALLER_ENV="1" | |
INFO global: VAGRANT_EXECUTABLE="/opt/vagrant/embedded/gems/2.2.18/gems/vagrant-2.2.18/bin/vagrant" | |
INFO global: VAGRANT_INSTALLER_EMBEDDED_DIR="/opt/vagrant/embedded" | |
INFO global: VAGRANT_INSTALLER_VERSION="2" | |
INFO global: VAGRANT_LOG="debug" | |
WARN global: resolv replacement has not been enabled! | |
DEBUG global: Loading core plugin: /opt/vagrant/embedded/gems/2.2.18/gems/vagrant-2.2.18/plugins/synced_folders/nfs/plugin.rb |
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DEBUG host: Searching for cap: nfs_installed | |
DEBUG host: Checking in: linux | |
DEBUG host: Found cap: nfs_installed in linux | |
INFO host: Execute capability: nfs_installed [#<Vagrant::Environment: /home/aok/Vms/local/ansible/libvirt/folders/ganesha-wsl>] (linux) | |
INFO subprocess: Starting process: ["/bin/ps", "-o", "comm=", "1"] | |
INFO subprocess: Command not in installer, restoring original environment... | |
DEBUG subprocess: Selecting on IO | |
DEBUG subprocess: stdout: init | |
DEBUG subprocess: Waiting for process to exit. Remaining to timeout: 32000 | |
DEBUG subprocess: Exit status: 0 |
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### Keybase proof | |
I hereby claim: | |
* I am akarasulu on github. | |
* I am akarasulu (https://keybase.io/akarasulu) on keybase. | |
* I have a public key ASAovua09pay8GjlETvUhyIuxRZmGYacFFq80R6aI_gdvgo | |
To claim this, I am signing this object: |