The t510 we have in-house with nvidia graphics is in-deed a switchable/hybrid graphics system, however it does not have the ability to control which device is used in the BIOS.
The t510 Marc is reporting this against is a bit newer and does support the ability to choose which graphics device is used in the BIOS.
Due to this, we're not able to reproduce on our t510 in a way that mimics Marc's configuration:
A quick note on our t510 testing.
The t510 we have in-house with nvidia graphics is in-deed a switchable/hybrid graphics system, however it does not have the ability to control which device is used in the BIOS.
The t510 Marc is reporting this against is a bit newer and does support the ability to choose which graphics device is used in the BIOS.
Due to this, we're not able to reproduce on our t510 in a way that mimics Marc's configuration:
http:// www.bios- mods.com/ forum/Thread- ThinkPad- T410-T510- Intel-IGP- Optimus- Unlock- Request