Difference between revisions of "Problem with disabled VT"

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m (removed dead links and replaced them with more detailed information. the MIGR links are completely dead too, so don't bother converting them using the LNVDOCURL template)
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Some recent ThinkPad models ship with Intel CPUs that implement the [http://en.wikipedia.org/wiki/Virtualization_Technology Intel VT extensions] for hardware-supported virtualization, but the capability is disabled by the BIOS. There is no known solution. See [http://lkml.org/lkml/2006/11/6/24 this LKML thread].
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Some Core Duo era ThinkPad models ship with Intel CPUs that implement [http://en.wikipedia.org/wiki/Virtualization_Technology VT-x] for hardware-supported virtualization, but the capability is disabled by the BIOS. The only known solution is to flash a newer version of the affected ThinkPad's BIOS.
  
== BIOS configuraiton ==
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See [http://lkml.org/lkml/2006/11/6/24 this LKML thread] for more information.
  
By default, on thinkPad, VT extensions are disabled. Before to try a firmware update, you can check this help : http://amiduos.com/support/knowledge-base/article/enabling-virtualization-in-lenovo-systems
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== BIOS configuration ==
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For some reason, VT-x is disabled by the BIOS on some ThinkPad models. Before you attempt a firmware update, you should check this [http://amiduos.com/support/knowledge-base/article/enabling-virtualization-in-lenovo-systems article] to confirm that your BIOS version has VT-x as a configurable option.
  
== BIOS Update for ThinkPad Z61e, Z61m, Z61p, Z61t ==
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== Available BIOS updates ==
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In response to the missing and also disabled VT-x option in the BIOS, Lenovo has released several BIOS updates for the affected ThinkPads to fix the problem.
  
Lenovo solved the problem with a [http://www-307.ibm.com/pc/support/site.wss/MIGR-64409.html BIOS update] on June 6, 2007. Flashing the new BIOS adds a configuration option to the BIOS to allow or disallow the use of VT.
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Lenovo solved the problem with a [http://www-307.ibm.com/pc/support/site.wss/MIGR-64409.html BIOS update] on June 6, 2007. Flashing the new BIOS adds a configurable option to the BIOS to enable or disable VT-x.
  
 
== Affected Models ==
 
== Affected Models ==
 
* {{Z61e}}, {{Z61m}}, {{Z61p}}, {{Z61t}} - [http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-64305 fixed by new BIOS 2.18]
 
* {{Z61e}}, {{Z61m}}, {{Z61p}}, {{Z61t}} - [http://www-307.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-64305 fixed by new BIOS 2.18]
 
* {{X60}}, {{X60s}} - [http://www.burtonini.com/blog/computers/kvm-2006-12-12-21-30 Ross Burton's blog] - [http://www-3.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-63144 fixed by new BIOS]
 
* {{X60}}, {{X60s}} - [http://www.burtonini.com/blog/computers/kvm-2006-12-12-21-30 Ross Burton's blog] - [http://www-3.ibm.com/pc/support/site.wss/document.do?sitestyle=lenovo&lndocid=MIGR-63144 fixed by new BIOS]
* {{X60_Tablet}} - [http://www-3.ibm.com/pc/support/site.wss/MIGR-67148.html fixed by new BIOS]  
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* {{X60_Tablet}} - [http://www-3.ibm.com/pc/support/site.wss/MIGR-67148.html fixed by new BIOS]
* {{R60}}
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* Lenovo 3000 N100
 
* Lenovo 3000 N100
* Others?
 

Revision as of 05:08, 20 February 2019

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Some Core Duo era ThinkPad models ship with Intel CPUs that implement VT-x for hardware-supported virtualization, but the capability is disabled by the BIOS. The only known solution is to flash a newer version of the affected ThinkPad's BIOS.

See this LKML thread for more information.

BIOS configuration

For some reason, VT-x is disabled by the BIOS on some ThinkPad models. Before you attempt a firmware update, you should check this article to confirm that your BIOS version has VT-x as a configurable option.

Available BIOS updates

In response to the missing and also disabled VT-x option in the BIOS, Lenovo has released several BIOS updates for the affected ThinkPads to fix the problem.

Lenovo solved the problem with a BIOS update on June 6, 2007. Flashing the new BIOS adds a configurable option to the BIOS to enable or disable VT-x.

Affected Models