# Lenovo ThinkPad T400

This article or section needs language, wiki syntax or style improvements.

Reason: Numerous spelling, grammar, and style issues. (Discuss in Talk:Lenovo ThinkPad T400#)

Related articles

- Lenovo ThinkPad T400s

Installation instructions for the Lenovo ThinkPad T400.

## System Specification

Note, ThinkPad T400 is available in a few hardware variants. Check the ThinkWiki where details of hardware specification are discussed in the T400 category.

Below is an overview of the T400 specifications as originally used to start this article:

- CPU : Intel® Core™2 Duo Processor T9400 (6M Cache, 2.53 GHz, 1066 MHz FSB)
- Memory : 3GB PC3-8500 DDR3
- WiFi : Intel WiFi Link 5300
- Hard-Drive : 160GB, 7200rpm
- Optical Drive : DVD Recordable
- Integrated Graphics : Intel 4500MHD
- Discrete Graphics : AMD M82XT Hybrid 256 MB (ATI Mobility Radeon HD 3470)
- Screen : 14.1" WXGA+ TFT with LED Backlight
- Gigabit Ethernet, Modem
- Express Card & PC Card Slots
- Integrated Bluetooth PAN
- No camera
- No fingerprint reader
- No Intel Turbo Memory

## Network

### Ethernet

The kernel module to get the network card to work is `e1000e`.

### Wireless

Lenovo offers different options in wireless hardware:

#### Intel chipset

- Wifi link 5100 and 5300

See Wireless network configuration#Intel.

#### Realtek chipset

- Rtl8192SE

     11b/g/n Wireless Lan Mini-PCI Express Adapter II
     03:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8172 (rev 10)

See http://www.thinkwiki.org/wiki/ThinkPad_11b/g/n_Wireless_LAN_Mini-PCI_Express_Adapter_II for more details.

See Wireless network configuration#rtl8192s[broken link: invalid section].

### Modem

There is a module "hsfmodem" provided by http://www.linuxant.com/.

### Bluetooth

If you have thinkpad-acpi kernel module loaded, you can enable and disable Bluetooth from command line. To enable:

    # echo 1 > /sys/devices/platform/thinkpad_acpi/bluetooth_enable

To disable:

    # echo 0 > /sys/devices/platform/thinkpad_acpi/bluetooth_enable

To disable or enable Bluetooth at startup, add one of the above commands to `/etc/rc.local`.

The bluetooth module requires `uhci_hcd`. Make sure `/etc/modprobe.d/modprobe.conf` does not blacklist it.

For everything else related to Bluetooth, follow the procedure described in Bluetooth section of the Arch Wiki.

## Graphics/Xorg Configuration

Note that it's possible to switch the graphics adapter by only restarting X, but It's quite useless since you can't power up/down a graphic-card without rebooting. So it's either both graphic-card on at all times, or do the switching in the BIOS.

So please press the ThinkVantag-button» during boot up and enable either the Integrated or the Discrete graphics cards in your BIOS's "Config->Display" menu.

### Integrated Graphics

After installing xorg, I installed the xf86-video-intel drivers.

### Discrete Graphics

See ATI for the open-source driver or AMD Catalyst for the proprietary driver.

### Switchable Graphics

ATI#Hybrid graphics/AMD Dynamic Switchable Graphics

### Synaptic, UltraNav

You may need to install the `xf86-input-synaptics` package.

If you want to be able to use horizontal and vertical scroll with your touchpad add this lines to your xorg.conf

    Section "Module"
     ......
     Load    "synaptics"
    EndSection

    Section "InputDevice"
     Identifier  "Touchpad"
     Driver    "synaptics"
     Option    "AlwaysCore"
     Option    "Device" "/dev/input/mouse1"
     Option    "Protocol" "auto-dev"
     Option    "SendCoreEvents"  "true"
     Option    "LeftEdge"    "1632"
     Option    "RightEdge"     "5312"
     Option    "TopEdge"     "1575"
     Option    "BottomEdge"    "4281"
     Option    "FingerLow"     "25"
     Option    "FingerHigh"    "30"
     Option    "MaxTapTime"    "180"
     Option    "MaxTapMove"    "220"
     Option    "VertScrollDelta"   "100"
     Option    "MinSpeed"    "0.06"
     Option    "MaxSpeed"    "0.12"
     Option    "AccelFactor"     "0.0010"
     Option    "VertEdgeScroll"  "on"
     Option    "HorizEdgeScroll"   "on"
     # Option HorizScrollDelta""0"
     Option    "SHMConfig"   "on"
    EndSection

for trackpoint with third button paste & scroll add these few lines to xorg.conf too

    Section "InputDevice"
     Identifier  "Trackpoint"
     Driver      "mouse"
     Option "CorePointer"
     Option "Device" "/dev/input/mice"
     Option "Protocol" "Auto"
     Option "Emulate3Buttons"
     Option "Emulate3Timeout" "50"
     Option "EmulateWheel" "on"
     Option "EmulateWheelTimeout" "200" # adjust third button paste timeout.
     Option "EmulateWheelButton" "2"
     Option "YAxisMapping" "4 5"
     Option "XAxisMapping" "6 7"
     Option "YAxisMapping" "4 5"
    EndSection

finally update your layout

    Section "ServerLayout"
     InputDevice    "Trackpoint" "CorePointer"
     InputDevice    "Touchpad"
     InputDevice    "Keyboard0" "CoreKeyboard"
    EndSection

## Audio

Once you have ALSA installed, fire up alsamixer and make sure that sound is not muted. You might also want to press the Volume Up or Volume Down button. It seems than the Mute button mutes everything, even system beeps. Pressing the Volume Up or Volume Down button can unmute, but not pressing the Mute button again.

Here's the modules I have loaded that are relevant to sound :

      $ lsmod | grep snd
      snd_seq_oss            35584  0
      snd_seq_midi_event      9344  1 snd_seq_oss
      snd_seq                58336  4 snd_seq_oss,snd_seq_midi_event
      snd_seq_device          9364  2 snd_seq_oss,snd_seq
      snd_hda_intel         474672  2
      snd_hwdep              10632  1 snd_hda_intel
      snd_pcm_oss            45568  0
      snd_pcm                82440  2 snd_hda_intel,snd_pcm_oss
      snd_timer              24720  2 snd_seq,snd_pcm
      snd_page_alloc         10640  2 snd_hda_intel,snd_pcm
      snd_mixer_oss          18944  1 snd_pcm_oss
      snd                    64840  16    snd_seq_oss,snd_seq,snd_seq_device,snd_hda_intel,snd_hwdep,snd_pcm_oss,snd_pcm,snd_timer,snd_mixer_oss
      soundcore               9632  1 snd

Additionally, there is a patch for the audio driver for conexant's chipsets provided by http://www.linuxant.com which can be downloaded at http://www.linuxant.com/alsa-driver/.

## Multimedia Keys

This article or section is a candidate for merging with Xmodmap.

Notes: everything is covered in the main article, no need to duplicate (Discuss in Talk:Lenovo ThinkPad T400#)

The screen brightness controls and the flashlight work without any tweaking. The other keys can be mapped using xev and xbindkeys. By following this guide you should be able to get everything working, but here's summary :

- First, open a terminal and type `xev`. This starts the "Event tester".
- Place your cursor on the "Event tester" window.
- When you press a key on your keyboard or move your mouse, it should get displayed in a terminal. For instance, this is what shows up if you press Fn+F2

       KeyRelease event, serial 33, synthetic NO, window 0x3000001,
       root 0x86, subw 0x0, time 5537544, (76,110), root:(81,938),
       state 0x0, keycode 146 (keysym 0x0, NoSymbol), same_screen YES,
       XLookupString gives 0 bytes:
       XFilterEvent returns: False

It basically says that keycode 146 is not bound (NoSymbol). Here are all the keycodes of all multimedia buttons:

      Volume Down : keycode 174
      Volume Up : keycode 176
      Fn+F2 : keycode 146
      Fn+F3 : keycode 241
      Fn+F4 : keycode 223
      Fn+F5 : Not responding to events ??
      Fn+F7 : keycode 214
      Fn+F8 : keycode 249
      Fn+F9 : keycode 207
      Fn+F12 : keycode 165
      Fn+Up : keycode 164
      Fn+Down : keycode 162
      Fn+Left : keycode 144
      Fn+Right : keycode 153
      Fn+Home : keycode 212
      Fn+End : keycode 101

- Type `xmodmap -pke > ~/.Xmodmap` in a terminal. This creates a file, `.Xmodmap`, containing your current keyboard mapping.
- Now open the file with a text editor and find the keycodes you're interested in. You can map any keycode with a symbol from this list.
- To get your new `.Xmodmap` loaded when you start X, just add `xmodmap ~/.Xmodmap` to your .xinitrc.
- To get your new `.Xmodmap` loaded immediately, type `xmodmap ~/.Xmodmap` in a terminal.

You can now assign functions to your newly bound keys by using facilities provided by your window desktop environment[broken link: invalid section] or by using `xbindkeys`.

To use `xbindkeys`,

- Start by installing it

      pacman -S xbindkeys

- Then add `xbindkeys &` to your .xinitrc.
- And finally, in your home directory, create a file called `.xbindkeysrc.scm` with content that would look something like

      (xbindkey '("XF86Standby") "sudo killall dhcpcd && sudo pm-suspend")
      (xbindkey '("XF86AudioRaiseVolume") "amixer set Master 2dB+ unmute")
      (xbindkey '("XF86AudioLowerVolume") "amixer set Master 2dB- unmute")

Note, in more recent Arch (kernel 3.4.2, xorg-server 1.12.2, laptop-mode-tools 1.61), on the T400, related keys combinations binding seems to be:

- Fn+2 → XF86ScreenSaver
- Fn+4 → XF86Sleep & XF86Wakeup
- Fn+12 → XF86Suspend

Now, the actual action will performed on XF86Sleep or XF86Suspend is configurable in session policy, so it may vary (e.g. depending on desktop environment). If nomenclature of XF86Standby, XF86Hibernate or XF86Sleep is confusing, check the thread suspend / hibernate nomenclature for in-depth explanation.

### Mute

To get the mute button to work, it is necessary to pass the string `acpi_osi="Linux"` to the kernel as a boot parameter. In GRUB2, add it to the "linux" line. See here for more details.

With the 3.1 bios, it seems that the mute button works normally (set it up the same as the volume buttons with, for instance, "amixer set Master toggle").

## ACPI

To enable the fan speed control, it's necessary to load the thinkpad_acpi with option fan_control=1. After the thinkpad_acpi module is loaded with this option, you can monitor and adjust the fan speed via /proc/acpi/ibm/fan.

## SUSPEND-RESUME

People have been having issues with suspend resume with the current intel xf86-video-intel 2.4.3.1 drivers in combination with the 4500mhd chipset. This is apparently an issue with concurrency as adding the following script (with mod 755) in /etc/pm/sleep.d fixes things. to some extent...

    #!/bin/sh
    # Workaround for concurrency bug in xserver-xorg-video-intel 2:2.4.1-1ubuntu10.
    # Save this as /etc/pm/sleep.d/00CPU

    . "/usr/lib/pm-utils/functions"

    case "$1" in
    	hibernate|suspend)
    		for i in /sys/devices/system/cpu/cpu*/online ; do
    			echo 0 >$i
    		done
    		;;
    	thaw|resume)
    		sleep 10	# run with one core for 10 secs
    		for i in /sys/devices/system/cpu/cpu*/online ; do
    			echo 1 >$i
    		done
    		;;
    	*)
    		;;
    esac

From http://ubuntu-virginia.ubuntuforums.org/showpost.php?p=6105510&postcount=12 petri4 on the ubuntu forums.

Category:

- Lenovo

Hidden categories:

- Pages or sections flagged with Template:Style
- Pages with broken section links
- Pages or sections flagged with Template:Merge