02-07-2012 11:47 AM
04-12-2012 09:48 PM
04-13-2012 05:52 AM - edited 04-13-2012 05:52 AM
Sounds possibly the same as or related to this:
Would need to clarify - is it just dimming and then re-brightening (could be Win7 waiting on a process to close as mentioned already) or totally blacking out then coming back (graphics driver, which I've seen on other Optimus machines as well, and will vary from configuration to configuration, likely depending on which GPU is active at the time the machine is shut down)
For example, if you plug in an external monitor, the internal panel will flash black, then come back on. Does this look the same to you as the flicker during shutdown?