Category:X250

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ThinkPad X250

This page gives an overview of the ThinkPad X250.

Standard Features

  • One of the following ultra-low-voltage Broadwell-U processors:
    • Intel Core i3-5010U, 2,10 GHz, 3MB Cache
    • Intel Core i5-5200U, 2,2 - 2,7 GHz, 3MB Cache
    • Intel Core i5-5300U, 2,3 - 2,9 GHz, 3MB Cache, Intel vPro
    • Intel Core i7-5600U, 2,6 - 3,2 GHz, 4MB Cache, Intel vPro
  • One of the following graphics adapters:
    • Intel HD5500 Graphics integrated into CPU
    • External Display connectors: VGA, Mini DisplayPort with audio
    • Maximum supported resolution on external monitor:
      • 3840x2160 ("4K") 60Hz via Mini DisplayPort
      • 1920x1200 ("WUXGA") 60Hz via VGA
  • One of the following displays:
    • 12.5" 1366x768 ("HD"), LED-Backlight, 200 cd/m², 300:1
    • 12.5" 1366x768 ("HD"), LED-Backlight, 300 cd/m², 700:1, IPS
    • 12.5" 1366x768 ("HD"), LED-Backlight, 270 cd/m², IPS, Multitouch
    • 12.5" 1920x1080 ("Full HD"), LED-Backlight, 400 cd/m², 700:1, IPS
    • 12.5" 1920x1080 ("Full HD"), LED-Backlight, 360 cd/m², IPS, Multitouch
  • Up to 8GB DDR3L PC3-12800 1333MHz (1 DIMM Slots) (unofficially 16GB modules reportedly working by multiple users)
  • Hard disk: 2.5" × 7mm hard drive bay with one of the following hard drives:
    • SSD, SATA 6.0Gb/s, 2.5" wide, 7mm high
    • HDD, SATA 6.0Gb/s, 2.5" wide, 7mm or 9.5mm high (9.5mm is in official spec but not yet confirmed by users)
    • SSHD with 8GB NAND flash memory
  • M.2 slot with, optionally, one of the following:
    • M.2 SSD
    • Wireless WWAN, Ericsson N5321, HSPA+ 21Mbps/GSM/GPRS/EDGE, GPS
    • Wireless WWAN, Sierra Wireless EM7345,
    • Intel 4G LTE/HSPA/GSM/GPRS/EDGE, GPS
  • Cellular WWAN
    • via optional M.2 card (see above)
    • Externally-accessible SIM tray. Stock tray accepts micro-SIM. The socket is also compatible with the mini-SIM (regular size) holder from the X240.
  • WLAN (WiFi and BlueTooth):: one of the following, via M.2 slot:
    • 802.11b/g/n, ThinkPad 11 b/g/n, 2x2, Wi-Fi + Bluetooth
    • 802.11b/g/n, Intel Wireless-N 7265, 2x2, Wi-Fi + Bluetooth
    • 802.11a/b/g/n, Intel Dual Band Wireless-N 7265, 2x2, Wi-Fi + BlueTooth
    • 802.11ac, Intel Dual Band Wireless-AC 7265, 2x2, Wi-Fi + BlueTooth
  • 3.5mm Headphone+Mic combo jack
  • 2 x USB 3.0 ports, one of which is "Always on" for power
  • 4-in-1 SD card reader (SD / SDHC / SDXC / MMC slot)
  • Ethernet: Intel I218-LM
  • 720p HD Integrated camera
  • Pointing devices
    • TrackPoint (with 3 physical buttons)
    • UltraNav touch pad
  • Batteries:
    • Internal (front) battery: 23.2Whr 3 cell Li-Polymer (optional)
    • External (rear) battery: one of
      • 23.2Wh 3 cell Li-Polymer (Type 68)
      • 72Wh 6 cell Li-Ion (Type 68+)
    • External battery can be swapped while running on the internal battery ("Power Bridge")
  • Smart card reader (optional)
  • Integrated Fingerprint Reader (optional)
  • Kensington lock
  • Dimensions:
    • Touch: 305.5mm x 208.5mm x 21.5mm (12.0" x 8.21" x 0.85")
    • Non-touch: 305.5mm x 208.5mm x 20.3mm (2.0" x 8.21" x 0.80")
    • Weight: 1.42kg (internal battery + 3-cell external battery, non-touch) to 1.65kg (internal battery + 6-cell external battery, touch)
  • Compatible docking stations:

ThinkPad X250

Resources

Disassembly

Any internal component replacement or upgrade (including hard disk and expansion cards) requires opening the back cover. Keyboard replacement requires full assembly and disassembly of the system board, and fresh thermal paste for the CPU heatsink.

Opening the case involves two stages:

  • Opening a handful of screws (these have tiny retainer rings made of transparent plastic; be careful not to drop them when removing the back cover).
  • Carefully prying apart dozens of little fragile plastic latches. This requires a plastic case opening tool to avoid damage (a metal screwdriver will nick and scratch the plastic).

RAM upgradability

This model has a single SODIMM socket, which officially supports up to 8GB of RAM (PC3-12800 DDR3L SDRAM 1600MHz SODIMM).

In practice, some 16GB DRAM modules work in this machine. In particular, the 16GB DDR3L 1333MHz SODIMM DRAM module from Intelligent Memory, model IMM2G64D3LSOD8AG-B15E, is reported to work well by multiple users.

Key mapping

This model has a 6-row keyboard, where the F1 through F12 share the same top-row physical keys with special functions keys (volume, brightness, etc.). By default, the top-row keys invoke the special functions, and require Fn keypress to invoke the usual F1 through F12 functions. To switch the role and have the top-row keys default to F1 through F12, enable Fn-Lock mode (by pressing Fn+Esc).

Known linux issues & fixes

Complete lockup with nothing in logs on Debian

The solution that worked for most:

create a file named `/etc/X11/xorg.conf.d/20-intel.conf`, add the following and reboot: 

   Section "Device"
       Identifier "Intel Graphics"
       Driver "intel"
       Option "DRI" "false"
       Option "AccelMethod" "uxa"
       Option "NoAccel" "True"
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