Topic: Linux

Intel Centrino Wireless-N 2200 Ubuntu 1Mbps Workaround

The new power management features enabled in the Intel Centrino Wireless-N 2200 Wifi Card aren’t supported as of Linux Kernel 3.4.0-030400-generic. In 802.11n mode, this wifi card will sometimes drop down to 1 Mbps and stop receiving data altogether. Symptoms Run lspci -v and make sure that your wireless network controller has iwlwifi listed next to Kernel driver in use. Network packets are lost and iwconfig shows current network speed as 1Mbps. To fix this, you can either turn off power management or disable 802.11n on the wireless card. Option 1: Turn off power management 1. Run the following command, where wlan0 is the identifier for your wireless card. #… go on →

Ubuntu on the Lenovo Thinkpad x230

This is a review of my experience with Ubuntu GNU/Linux on the Lenovo Thinkpad x230 with Intel Ivy Bridge, but parts may also apply to the T430, T530, W530, and the x230t. The laptop’s configuration: Intel Core i5-3210M (3M Cache, up to 3.10GHz) 12.5″ Premium HD (1366×768) IPS, 2×2 Antenna Intel HD 4000 Graphics integrated on Core i5-3210M UltraNav without FingerPrint Reader 720p HD Camera 500GB Hard Drive, 5400RPM 6 Cell ThinkPad Battery, X44+ 65W AC Adapter – US Only Intel Centrino Wireless-N 2200 (2×2 BGN) Thinkpads are excellent laptops for college students, especially those in computer science. They are durable and have excellent compatibility with Linux. Lenovo laptops come… go on →

Windows 8 is a Toy

Windows 8 seems to be going in the direction of a leisure toy as opposed to business machine. It’s actually not such a bad thing.¬†Microsoft Corporate products are already so expensive and complex to maintain in comparison to open source solutions. If this continues, it will effectively clear the productivity computer market for Linux. It’s just so unnatural to publish and create on what feels like a game console. Let’s not complain then and allow them to fail.

Fundamental Terminal Shortcuts

The linux command line interface is a powerful tool and a professional alternative to a graphical user interface. The keyboard shortcuts listed here are essential to using the terminal efficiently. In traditional computer documentation, the ^ symbol was used to indicate the Control Key. For example, ^C translated to Ctrl + C. ^C halts the current process. It can be used to interrupt a running process, stopping a server process, or getting a new terminal prompt to type on. ^D signals the End of File (EOF) character. It can be used to logout of a ssh or teletype (tty) session, to close a terminal window, to end a telnet session,… go on →

Temperature and Fan Speed with lm-sensors

The following tutorial requires root terminal access. It also will not work on virtual servers, only on dedicated machines. This program lets you access temperature sensors and fan speed sensors on your system. Root access is required to detect the sensors, but not to read them. This will only work for systems running on bare metal, as opposed to a virtual server. Install the lm-sensors package with the following: $ sudo apt-get install lm-sensors Then, let sensors find which temperature sensors are available on your system with: $ sudo sensors-detect Accept the defaults to the prompts. If sensors-detect fails, check to make sure you are running as root and that… go on →