Difference between revisions of "Category:X220 Tablet"

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=== ThinkPad X220 Tablet ===
 
=== ThinkPad X220 Tablet ===
This page gives an overview of all ThinkPad X220 Tablet (X220t) related topics.
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This page gives an overview of the ThinkPad X220 Tablet.
 
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==== Machine Type ====
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* 4296, 4298, 4299
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==== Features ====
 
==== Features ====
*One of the following [[Intel Core i5]] or [[Intel Core i7]] processors:
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*One of the following processors:
 
** Intel® Core™ i5-2410M (2.3GHz, 3MB L3 cache)
 
** Intel® Core™ i5-2410M (2.3GHz, 3MB L3 cache)
 
** Intel® Core™ i5-2520M (2.5GHz, 3MB L3 cache)
 
** Intel® Core™ i5-2520M (2.5GHz, 3MB L3 cache)
 
** Intel® Core™ i7-2620M (2.7GHz, 4MB L3 cache)
 
** Intel® Core™ i7-2620M (2.7GHz, 4MB L3 cache)
 
* [[Intel Mobile QM67 Express Chipset]]
 
* [[Intel Mobile QM67 Express Chipset]]
* Up to 8GB [[PC3-10600]] DDR3 memory at 1333MHz
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* Up to 8GB [[PC3-10600]] DDR3 memory at 1333MHz per Lenovo official specifications
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** 16GB (2x8GB) [[PC3-14900]] at 1866MHz possible
 
* [[Intel HD Graphics]] 3000
 
* [[Intel HD Graphics]] 3000
 
* One of the following [[TFT display|TFT displays]]:
 
* 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), 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
 
** 12.5" TFT display with 1366x768 resolution, 300 NIT WV (IPS), Corning Gorilla glass direct bond, pen
* hard drive bay with one of the following hard drives:
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* 2.5" × [[7mm hard drive bay]] with one of the following hard drives:
 
** 4GB SSD SATA
 
** 4GB SSD SATA
 
** Intel 80GB Micro SSD SATA
 
** Intel 80GB Micro SSD SATA
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** 320GB 5400RPM SATA
 
** 320GB 5400RPM SATA
 
** 320GB 7200RPM SATA
 
** 320GB 7200RPM SATA
* one [[MiniPCI Express slot]] with optional
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* [[MiniPCI Express slot]] with optional
 
** [[Intel Centrino Ultimate-N 6300]]
 
** [[Intel Centrino Ultimate-N 6300]]
 
** [[Intel Centrino Advanced-N 6205]]
 
** [[Intel Centrino Advanced-N 6205]]
 
** [[Intel Centrino Advanced-N + WiMAX 6250]]
 
** [[Intel Centrino Advanced-N + WiMAX 6250]]
* one [[MiniPCI Express slot]] with optional
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* [[MiniPCI Express slot]] with optional
 
** [[Qualcomm Gobi 3000]] WWAN
 
** [[Qualcomm Gobi 3000]] WWAN
 
** [[LeadCore TD-SCDMA (LC5730D)]] WWAN
 
** [[LeadCore TD-SCDMA (LC5730D)]] WWAN
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=== Resources ===
 
=== Resources ===
 
* [http://shop.lenovo.com/ISS_Static/ww/wci/us/ww/pdf/x220t_datasheet.pdf Datasheet]
 
* [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)]
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* [https://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles_pdf/0a60175_01.pdf X220 Tablet Hardware Maintenance Manual (HMM)]
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=== BugFix ===
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It is a known problem for the X220 Tablet (other models may apply), that there is a problem concerning the CPU throttling in LINUX.
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* 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.
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* 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]]
 
[[Category:X Series]]

Latest revision as of 18:38, 25 August 2017

ThinkPad X220 Tablet

This page gives an overview of the ThinkPad X220 Tablet.

Features

ThinkPad X220t

Resources

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.