Lenovo ThinkPad X200
The Lenovo ThinkPad X200 is a wonderful high-quality laptop featuring a 12.1" widescreen WXGA monitor, an Intel Core 2 Duo processor (2.26 - 2.66GHz), an Intel Graphics Media Accelerator 4500MHD and up to 4GB of RAM whilst still maintaining impressive battery life.
While Arch Linux is running flawlessly on this laptop there are a few things you have to configure manually. This article will aid you in configuring your system and will provide additionally hints to make your ThinkPad X200 experience even better.
The ThinkPad X200 has a Intel PRO/Wireless 5100 AGN wireless adapter included. In order to make it work you have to install the iwlwifi-5000-ucode package when you install from a 2010.05 snapshot in order to get the firmware, by now the package is included in the linux-firmware package.
Now you can choose whatever network configuration programs you want to use. If you do not already know which network manager you want to use, we highly recommend netcfg.
If you experience connectivity problems such as a slow connection or aborts, especially when connected to an (Enterprise) WPA2 network, then try to load the iwlwifi module with the options
bt_coex_active=0. There is no clear recommendation which of these options to be used as for some users
11n_disable=1 already solves the problem sufficiently, for others
bt_coex_active=0. Thus, play around with each of them. Example:
modprobe iwlwifi 11n_disable=2
If some of them work out for you, then make the options permanent by creating the file
/etc/modprobe.d/wireless.conf and adding the following:
options iwlwifi 11n_disable=2 # Disable blinking LED wireless light options iwlwifi led_mode=1
The graphics card is supported by the xf86-video-intel driver package from the extra repository. The Xorg server makes use of this automatically. There's no need for a Xorg configuration file.
# pacman -S xf86-video-intel
Audio is supported out of the box after installing the necessary alsa packages from the core repository.
# sudo pacman -S alsa-lib
See Alsa for more information.
Disable bluetooth at boot
In order to disable bluetooth at boot you just need to add the following line to a newly created /etc/tmpfiles.d/disable-bluetooth.conf file. Please note, that there is no longer support for a /etc/rc.local file.
w /proc/acpi/ibm/bluetooth - - - - disable
Hard Disk Shock Protection
The ThinkPad X200 comes with an integrated 2-axis accelerometer providing the possibility of parking the hard drive's disk heads preventing from data loss due to heavy shocks.
First you'll have to install tp_smapi and hdapsd from AUR. Then you have to load the hdaps module provided by tp_smapi with the option invert=7 passed. This will correct the orientation of the accelerometer's axises. If you are using systemd, create a file
/etc/modules-load.d/tp_smapi.conf with the following line:
# Load tp_smapi at boot options tp_smapi invert=7
Then you need to start the hdapsd daemon:
$ systemctl enable hdapsd $ systemctl start hdapsd
Now check your log files with
journalctl if you see any parking/unparking entries which indicate that hdapsd is successfully configured.
For full information see: HDAPS
If the mute button on your keyboard is not working, then be sure to add acpi_osi="Linux" to your boot parameter in /etc/default/grub.
Power consumption and fan control
You might notice a beeping whilst your system is running. This is due to missing fan control. Install the tlp package from AUR to enable extensive fan and power consumption control.
You can further disable the nmi-watchdog by creating the file
/etc/tmpfiles.d/disable-nmi-watchdog.conf with the following line:
w /proc/sys/kernel/nmi_watchdog - - - - 0
This will disable the watchdog at startup.
Additionally you might want to define different brightness level and automatically dim your screen when you are running on battery. A DE and WM independent solution is the usage of pm-utils. Detailed instructions can be found here. They are tested to work with a X200T.
Suspend to RAM
Suspend to RAM is working out of the box with the standard Arch Linux kernel after installing pm-utils from extra.
# pacman -S pm-utils
Issue the command
as root to suspend to RAM. The laptop will wake up on any key press or on opening the lid.
Note: Very seldom after resuming the backlight won't come back on. The following page on ThinkWiki might provide information on how to solve this issue: Problem with display remaining black after resume.