Category:X220 Tablet

2012-04-23T07:35:59Z

Benedikt: /* BugFix */

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=== ThinkPad X220 Tablet ===
This page gives an overview of all ThinkPad X220 Tablet (X220t) related topics.

==== Machine Type ====
* 4296, 4298, 4299

==== Features ====
*One of the following [[Intel Core i5]] or [[Intel Core i7]] processors:
** Intel® Core™ i5-2410M (2.3GHz, 3MB L3 cache)
** Intel® Core™ i5-2520M (2.5GHz, 3MB L3 cache)
** Intel® Core™ i7-2620M (2.7GHz, 4MB L3 cache)
* [[Intel Mobile QM67 Express Chipset]]
* Up to 8GB [[PC3-10600]] DDR3 memory at 1333MHz
* [[Intel HD Graphics]] 3000
* One of the following [[TFT display|TFT displays]]:
** 12.5" TFT display with 1366x768 resolution, 300 NIT WV (IPS), 2 finger touch/5 finger gesture, infinity Glass
** 12.5" TFT display with 1366x768 resolution, 300 NIT WV (IPS), Corning Gorilla glass direct bond, pen
* 2.5" × [[7mm hard drive bay]] with one of the following hard drives:
** 4GB SSD SATA
** Intel 80GB Micro SSD SATA
** 128GB SSD SATA
** Intel 160GB SSD SATA (SSDSA2M160)
** 160GB 7200RPM SATA
** 250GB 5400RPM SATA
** 250GB 7200RPM SATA (with limited OPAL FDE technology)
** 320GB 5400RPM SATA
** 320GB 7200RPM SATA
* [[MiniPCI Express slot]] with optional
** [[Intel Centrino Ultimate-N 6300]]
** [[Intel Centrino Advanced-N 6205]]
** [[Intel Centrino Advanced-N + WiMAX 6250]]
* [[MiniPCI Express slot]] with optional
** [[Qualcomm Gobi 3000]] WWAN
** [[LeadCore TD-SCDMA (LC5730D)]] WWAN
** [[Ericsson HSPA + (F5521gw)]] WWAN
** [[Huawei EV-DO (EM660)]] WWAN
* [[Intel Gigabit Ethernet PCI-Express Controller|Intel Gigabit 82579LM]] (PCI-Express)
* [[ThinkPad Bluetooth Daughter Card with Enhanced Data Rate (BDC-2)|ThinkPad Bluetooth Daughter Card with Enhanced Data Rate (BDC-2.1)]]
* [[ExpressCard slot|ExpressCard/54 slot]]
* [[SD Card slot]]
* Three USB 2.0 ports (of which one always on)
* 720p HD [[Integrated camera]]
* Stereo digital microphones
* Stereo speakers
* Combined headphone and microphone jack
* [[Trackpoint]] and [[Buttonless Touchpad]]
* [[Integrated Fingerprint Reader]] (UPEK)
* Comes with 65W AC Adapter
* Supports [[ThinkPad UltraBase Series 3]], [[ThinkPad Mini Dock Series 3]], etc.
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[[Image:ThinkPadX220t.png|ThinkPad X220t|300px]]
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=== Resources ===
* [http://shop.lenovo.com/ISS_Static/ww/wci/us/ww/pdf/x220t_datasheet.pdf Datasheet]
* [http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/0a60175_01.pdf Hardware Maintenance Manual (HMM)]

=== BugFix ===
It is a known problem for the X220 Tablet (other models may apply), that there is a problem concerning the CPU throttling in LINUX.
* Syntoms vary for different kernels and distributions. Eg in ubuntu the CPU speed gets blocked at low rates and the computer becomes very slow until reboot, in Opensuse the entire desktop freezes (only mouse pointer working) and switching to console is not possible.
* Solution is to '''disable the power management in the BIOS''' (at least disable BIOS CPU speed throttling). This has no major affect on battery life since the OS is still able to throttle the CPU when neccessary.

[[Category:X Series]]

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Category:X220 Tablet