Difference between revisions of "Problem with disabled VT"

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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-assisted virtualization, but the capability was left disabled by the BIOS. The only known solution is to flash a newer version of the affected ThinkPad's BIOS.
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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== 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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Please note that the T60, T60p, R60, R60i, R60e, and the G50 are not affected by this 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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== 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.
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As of version 2.18 and above, the Z61t, Z61e, Z61m, and the Z61p has VT-x as a configurable option in the BIOS. The X60 and the X60s' BIOS has been also updated to fix the same issue, but it is only available in version 2.06 and above. The X60 Tablet was also fixed, albeit slightly earlier as of version 1.04 and above.
  
 
== 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]
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* {{Z61e}}, {{Z61m}}, {{Z61p}}, {{Z61t}}
* {{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]
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* {{X60}}, {{X60s}} - [http://www.burtonini.com/blog/computers/kvm-2006-12-12-21-30 Ross Burton's blog]
* {{X60_Tablet}} - [http://www-3.ibm.com/pc/support/site.wss/MIGR-67148.html fixed by new BIOS]
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* {{X60_Tablet}}
* {{R60}}
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* Lenovo 3000 N100
 
* Lenovo 3000 N100
* Others?
 

Latest revision as of 16:09, 2 March 2019

Some Core Duo era ThinkPad models ship with Intel CPUs that implement VT-x for hardware-assisted virtualization, but the capability was left 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.

Please note that the T60, T60p, R60, R60i, R60e, and the G50 are not affected by this problem.

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.

As of version 2.18 and above, the Z61t, Z61e, Z61m, and the Z61p has VT-x as a configurable option in the BIOS. The X60 and the X60s' BIOS has been also updated to fix the same issue, but it is only available in version 2.06 and above. The X60 Tablet was also fixed, albeit slightly earlier as of version 1.04 and above.

Affected Models