RAM on Thinkpad X220

Memtester running on Linux is a more throughout RAM tester than the usual memtest.

Info on the max RAM speed: http://forum.notebookreview.com/threads/does-x220-i7-support-1600-1866mhz-ram.732786/

Apparently, only older/modded/coreboot BIOSes let you use 1866MHz ram that helps quite dramatically with the GPU performance.

Simili dual-channel works if you use 2GB+4GB sticks for instance. Bringing the speed benefits on 2GB of RAM (benefits the GPU as well).

Article clair sur le reverse SSH

http://geekfault.org/2011/02/19/reverse-ssh-acceder-a-un-serveur-derriere-un-natfirewall/

Memo pour me faire une machine de sauvegarde avec mon dockstar vers laquelle je puisse faire mes rsync, oĂą qu’elle soit connectĂ©e (mĂŞme derrière le NAT d’une nouvelle Box non configurĂ©e ou un accès 3G/4G).

Pour compléter un rappel pour génération de clés RSA:

http://jeyg.info/ssh-authentification-par-cles-rsa-ou-dsa/

Lancer un script au démarrage dans Archlinux:

https://wiki.archlinux.org/index.php/Systemd_FAQ#How_can_I_make_a_script_start_during_the_boot_process.3F

Faire une sorte de watchdog avec cron et un script de vérification du PID:

http://letitknow.wordpress.com/2012/12/31/keeprun/

SHE Super Hybrid Engine on Linux without Jupiter

I’m using an Asus eeePc 901 with Xubuntu 12.04.Jupiter is installed on it for a convenient way to manage the SHE. The SHE enables control over the FSB, it is very efficient to further reduce the battery usage, and is independent of the cpufreq governors.
I will soon upgrade to the 14.04 version of Xubuntu, so I looked into the replacements. Everybody talks about TLP but this doesn’t manage the SHE of the eeePCs.

The mode can be changed by setting 0, 1 or 2 in the following file: /sys/devices/platform/eeepc/cpufv
0 : max perf – overclock FSB
1 : on demand – standard FSB
2 : power save – downlclock FSB

Source I used to find out: http://chomaloma.blogspot.fr/2010/02/followup-on-super-hybrid-engine-superhe.html

You need the eeepc_laptop module loaded for this cpufv option to be available.

 

 

Moving away from Google

Moving my contacts and calendar away from Google:
http://davdroid.bitfire.at/what-is-davdroid
http://baikal-server.com

Collaborative editing: http://etherpad.org/

Voip:

jitsi.org They have a new alpha for android, might be a suitable option on android as well in the future

or Mumble http://mumble.sourceforge.net/ but it requires a server and people connected to that server.