hmm, from what I can find, the only way to prevent the screen from switching between 50 and 60hz is to make it use 50hz? There seems to be no way to get 60hz on battery?
http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T420S-Display-Switching-To-50Hz-On-Battery-Power/td-p/422875 On Fri, Jul 29, 2011 at 12:16 PM, Scott Matthews <[email protected]> wrote: > Thanks! It does indeed appear to be switching between 50 and 60hz -- > but when I unplug it and set it to 60, and then plug/unplug again, it > winds up back at 50 -- where do I go to set that, such that it > "sticks"? > > > > On Fri, Jul 29, 2011 at 12:06 PM, Jonathan Kelly <[email protected]> wrote: >> Check that the refresh rates are the same for both on & off mains power. If >> it is dropping from 60 to 50hz, that would cause the blank screen effect as >> it makes the step up/down. >> >> On Friday, July 29, 2011, Scott Matthews <[email protected]> wrote: >>> Hi all, I have a new Win7 64bit Thinkpad. When I unplug or plug in the >>> power it: beeps, then adjusts brightness, then goes totally black, >>> then returns -- is that normal? Is there some way to eliminate that >>> black bit? >>> _______________________________________________ >>> Thinkpad mailing list >>> [email protected] >>> http://stderr.org/cgi-bin/mailman/listinfo/thinkpad >>> > _______________________________________________ Thinkpad mailing list [email protected] http://stderr.org/cgi-bin/mailman/listinfo/thinkpad
