howto disable laptop touchpad, trackpoint, power button and more

To disable the touchpad, trackpoint or touchscreen of a laptop, use the tool xinput to list the devices currently known to the X window system.

blu@aptenodytes:~$ xinput list
⎡ Virtual core pointer […]

By |June 4th, 2013|Hardware, Window manager|Comments Off on howto disable laptop touchpad, trackpoint, power button and more

changing or adding cryptsetup LUKS password or keyfile

Devices encrypted with luks support more than one passphrase. Here an example with a normal 5MB file. Just replace the “crypt_file.img” with /dev/sdX or whatever device you have encrypted.

user@host:~$ dd if=/dev/urandom bs=5M count=1 of=crypt_file.img
1+0 records in
1+0 records out
5242880 bytes (5.2 MB) copied, 0.507585 s, 10.3 MB/s

sudo cryptsetup luksFormat crypt_file.img
WARNING!
========
This will overwrite data on crypt_file.img irrevocably.

Are […]

By |December 18th, 2012|Hardware, Linux distributions|Comments Off on changing or adding cryptsetup LUKS password or keyfile

Beeping high pitch sound during times of idle CPU on lenovo thinkpads

You might have noticed the beeping sound in recent thinkpads (my friends thinkpad T61 had this and my just bought x301 seems to have this too). That high pitch noise appears when your Thinkpad is idle, as in has “nothing” to do. I noticed it disappear when I moved the mouse for example. That is […]

By |December 12th, 2012|Hardware|Comments Off on Beeping high pitch sound during times of idle CPU on lenovo thinkpads