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xorg - How is my Intel gpu running without its driver installed? - Ask Ubuntu
Q: When I boot my Xubuntu 17.04 PC with the integrated Intel gpu, it runs fine (with screen tearing) at full native resolution without the xserver-xorg-video-intel package installed. But, lshw -c video lists the driver in use as driver=i915. How is this possible?
xubuntu  ubuntu  intel  driver  xorg  kernelmodule  hardwaresupport  forumthread  stackexchange  2017  info  links  opengl  memory 
19 days ago by ezequiel
ThinkWiki - Wiki for IBM/Lenovo ThinkPad users
This is ThinkWiki, the Wiki Web for IBM/Lenovo ThinkPad users. Here you find anything you need to install your favourite Linux distribution on your ThinkPad. Windows users shouldn't run away, there's a lot of useful information for them as well. Some Linux information for Mac users also can be found here.
wiki  articles  info  resources  issue  workaround  configuration  sysadmin  howto  guide  hardwaresupport  battery  bios  firmware  drivers  linux  keyboard  drm  install  installation  ubuntu  debian  hardware  reference  documentation  links  kernelpatches  kernelmodule  support  mailinglist  software  scripts  tools  laptop  via:ezequiel 
28 days ago by force
Power management/Suspend and hibernate - ArchWiki
Currently there are three methods of suspending available: suspend to RAM (usually called just suspend), suspend to disk (usually known as hibernate), and hybrid suspend (sometimes aptly called suspend to both): [...]
powermanagement  arch  linux  sysadmin  configuration  kernelmodule  kernel  booting  udev  example  tips  laptop  systemd  tools  acpi  workaround  issue  webcam  cpu  wifi  harddisk  networking  links  wikientry 
4 weeks ago by ezequiel
Power management - ArchWiki
Power management is a feature that turns off the power or switches system's components to a low-power state when inactive.

In Arch Linux, power management consists of two main parts:

* Configuration of the Linux kernel, which interacts with the hardware.
* Kernel parameters
* Kernel modules
* udev rules

* Configuration of userspace tools, which interact with the kernel and react to its events. Many userspace tools also allow to modify kernel configuration in a "user-friendly" way. See #Userspace tools for the options.
powermanagement  arch  linux  sysadmin  configuration  kernelmodule  kernel  booting  udev  example  tips  laptop  systemd  tools  acpi  workaround  issue  webcam  audio  pulseaudio  cpu  bluetooth  wifi  harddisk  networking  cd  dvd  links  wikientry 
4 weeks ago by ezequiel
[SOLVED] Hibernate, 15.10, 16.04, Unity, systemd, tlp, wifi module reload, tuxonice
I thought I should share this in case anyone else has the similar problem and wants to know how to solve it. With the new systemd configuration, the Unity menu's "hibernate" option does not call on pm-hibernate. It instead uses the hibernate and sleep service of logind / systemd. I'm using a tuxonice kernel, and the tlp power management setup on a thinkpad w520, running Ubuntu 16.04 (devel). I think this article is still relevant even if you don't have tlp or tuxonice, since it's systemd that changes how suspend and hibernate work.

When this laptop suspends or hibernates, sometimes the wifi stops working when it wakes back up. The solution is to unload the wifi device driver module prior to sleep, and then reload it upon resume, the way the "hibernate" script does, and "pm-hibernate" also did.
2016  forumthread  sysadmin  linux  powermanagement  script  scripts  example  kernelmodule  systemd  tips  cli  configuration  ubuntu  ubuntu.xenial  wifi 
4 weeks ago by ezequiel
Ubuntu 16.04 systemd unload modules on sleep
(me: simple script to force unloading and loading Linux kernel modules on suspend/resume, using 'systemd-sleep(8)' "local scripts 'hack'")
ubuntu  ubuntu.xenial  github  script  systemd  powermanagement  kernelmodule  issue  workaround  linux  example  sysadmin  laptop  links 
4 weeks ago by ezequiel
internet - Netgear N-300/ WNA3100 USB Adapter for Ubuntu 16.04 - Ask Ubuntu
Q: I am new to Linux and Ubuntu and I am having trouble connecting to the Internet.

I have a netgear WNA3100 USB Adapter and I don't have anything in my additional drivers.

A: You can add Support for the Netgear N-300/ WNA3100 USB Adapter by installing the ndiswrapper and loading the Windows network driver. [...]

(me: ndiswrapper fails to build when using kernel-headers >= 5.0 (on i686), then (even if patched) the 32-bit WinXP driver from NetGear does not work: ndiswrapper causes an "oops" because of the "nx" cpu protection bit; then, after disabling this (see another link saved today), ndiswrapper gives yet another error. Result (so far): failed).
ndiswrapper  issue  howto  guide  tips  example  cli  sysadmin  networking  wifi  2016  ubuntu  configuration  usb  driver  drivers  windows  links  linux  kernelmodule  forumthread  stackexchange 
4 weeks ago by ezequiel
Tp smapi - ThinkWiki
The tp_smapi kernel module exposes some features of the ThinkPad hardware/firmware via a sysfs interface. Currently, the main implemented functionality is control of battery charging and extended battery status. The tp_smapi software package also includes an improved version of the HDAPS driver. The underlying hardware interfaces are SMAPI and direct access to the embedded controller.
battery  laptop  wikientry  kernelmodule  installation  gentoo  debian  ubuntu  mint  issue  workaround  tips  example  configuration  hardwaresupport  compatibility 
5 weeks ago by ezequiel
Thinkpad-acpi - ThinkWiki
This is a Linux ACPI driver for the ThinkPad laptops written by Borislav Deianov, and currently maintained by Henrique de Moraes Holschuh and is included with the Linux kernel. It aims to support various features of these laptops which are accessible through the ACPI framework but not otherwise supported by the generic Linux ACPI drivers. As a kernel module, thinkpad-acpi works as a bridge to deliver information about certain hardware events like key presses or control the state of certain hardware features by software.
linux  kernelmodule  compatibility  hardwaresupport  wikientry  oldversion  battery  powermanagement  bios  links  sysadmin  resources 
5 weeks ago by ezequiel
TLP - ArchWiki
TLP brings you the benefits of advanced power management for Linux without the need to understand every technical detail. TLP comes with a default configuration already optimized for battery life, so you may just install and forget it. Nevertheless TLP is highly customizable to fulfill your specific requirements.
arch  linux  kernelmodule  laptop  hardwaresupport  software  wikientry  powermanagement  tool  sysadmin  bios  installation  battery  filesystem  tips  example  configuration 
5 weeks ago by ezequiel
Tp smapi - ThinkWiki
The tp_smapi kernel module exposes some features of the ThinkPad hardware/firmware via a sysfs interface. Currently, the main implemented functionality is control of battery charging and extended battery status. The tp_smapi software package also includes an improved version of the HDAPS driver. The underlying hardware interfaces are SMAPI and direct access to the embedded controller.

This driver uses undocumented features and direct hardware access, so it may work unreliably or even damage your hardware; but so far no such damage has been reported.

If you are installing on a recent Thinkpad that has an Ivy Bridge or newer processor (X230, T430, T530, etc.), tp_smapi will not work. You will be mostly limited to thinkpad-acpi capabilities. You can however set battery charge thresholds with tpacpi-bat.
hardwaresupport  laptop  wikientry  documentation  kernelmodule  compatibility  battery  bios  linux  api  installation  tips  cli  sysadmin  reference 
5 weeks ago by ezequiel
linux-thinkpad/tp_smapi (Lenovo ThinkPad Laptops kernel module)
ThinkPad laptops include a proprietary interface called SMAPI BIOS (System Management Application Program Interface) which provides some hardware control functionality that is not accessible by other means.

This driver exposes some features of the SMAPI BIOS through a sysfs interface. It is suitable for newer models, on which SMAPI is invoked through IO port writes. Older models use a different SMAPI interface; for those, try the "thinkpad" module from the "tpctl" package.

WARNING: This driver uses undocumented features and direct hardware access. It thus cannot be guaranteed to work, and may cause arbitrary damage (especially on models it wasn't tested on).
laptop  hardwaresupport  github  source  kernelmodule  tool  links  documentation  battery  powermanagement  linux  bios  api  compatibility 
5 weeks ago by ezequiel
mkottman/acpi_call: A linux kernel module that enables calls to ACPI methods through /proc/acpi/call. Now with support for Integer, String and Buffer parameters.
A kernel simple module that enables you to call ACPI methods by writing the method name followed by arguments to /proc/acpi/call.

This module is to be considered a proof-of-concept and has been superseeded by projects like bbswitch. It allows you to tamper with your system and should be used with caution.

Want to use acpi_call via graphic interface? [Click here]
2012  github  laptop  battery  ubuntu  fedora  debian  links  source  kernelmodule  hardwaresupport  powermanagement 
5 weeks ago by ezequiel
en:users:documentation:hostapd [Linux Wireless]
hostapd is an IEEE 802.11 AP and IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator. This page is dedicated to the Linux documentation of its implementation and use. Please refer to the hostapd home page for information for other Operating Systems.

To communicate with a kernel driver, hostapd has to use some interface. All new cfg80211 (and mac80211) based drivers that implement AP functionality are supported using the nl80211 interface.
wifi  linux  kernel  kernelmodule  documentation  links  atheros  development  networking  wikientry  reference  example  cli  tools  tool  sysadmin  configuration  tips  guide  security 
5 weeks ago by ezequiel
welcome [Linux Wireless]
This is the main source of Documentation for the Linux wireless (IEEE-802.11) subsystem. This wiki features information for end-users, developers and vendors.

This site covers all the new 802.11 drivers, the new core mac80211 and cfg80211 components along with the new userspace and in-kernel nl80211 configuration interface. New nl80211 userspace applications are also documented.
wifi  wireless  linux  kernel  kernelmodule  documentation  reference  wiki  articles  api  drivers  hardwaresupport  networking 
5 weeks ago by ezequiel
hostapd: IEEE 802.11 AP, IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator
hostapd is a user space daemon for access point and authentication servers. It implements IEEE 802.11 access point management, IEEE 802.1X/WPA/WPA2/EAP Authenticators, RADIUS client, EAP server, and RADIUS authentication server. The current version supports Linux (Host AP, madwifi, mac80211-based drivers) and FreeBSD (net80211).
networking  wifi  unix  linux  freebsd  sysadmin  software  security  openwrt  router  kernelmodule 
5 weeks ago by ezequiel
15.04 - Unable to install tp_smapi 0.41 on Thinkpad T500 - Ask Ubuntu
I have downloaded tp_smapi module for my Thinkpad T500 using the steps in ThinkWiki and ran make. it encountered no errors.

[...]

But when i tried to view the status of the battery using tlp, it shows as not loaded/installed:

root@Forge:/storage/Repository/git/tp_smapi# tlp-stat -b
--- TLP 0.7 --------------------------------------------

+++ ThinkPad Extended Battery Functions
tp-smapi = inactive (kernel module 'tp_smapi' load error)
tpacpi-bat = inactive (unsupported hardware)
[...]
2015  hardwaresupport  laptop  battery  kernelmodule  tool  linux  forumthread  stackexchange  ubuntu  issue  workaround  links  sysadmin 
5 weeks ago by ezequiel

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