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:
- 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)
- 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
- 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)
- Smart card reader (optional)
- 720p HD Integrated camera
- 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")
- Integrated Fingerprint Reader (optional)
- 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)
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Resources
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"
Pages in category "X250"
The following 21 pages are in this category, out of 21 total.
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