krustal

Rats... I was afraid of that. Thanks for the confirmation.

Bought a HDMI-to-(male)VGA cable & plugged in, now FN-F8 does nothing. Tried going into display settings but no additional displays are connected; also tried rebooting, shutting down completely & rebooting but still no go. I'm running the guide from here: https://osxlatitude.com/index.php?/topic/7461-guide-dell-latitude-e6430-with-yosemite-1010-14a389/ My specs are E6430 A12 with CPU IVB, I7-3740QM, 2.7GHz, 8gb RAM, 128SSD running Yosemite 10.10.1. Optimus is enabled & the nVidia card is disabled via Chameleon to save on power and temperature. Intel HD4000 video running @ 1300x900 with brightness controls working properly.

When I connect an external monitor via the VGA port and switch to that monitor using FN-F8, I get garbled output on the external monitor while the screen on my laptop is black. When I switch back to the laptop screen, it is also garbled. If I put the laptop to sleep and wake it up again, the laptop screen is back to normal. Any thoughts on getting the external monitor working? Thanks in advance for your help!