Reported by tria gian, Jan 19, 2013
Hi all. I own an MSI GT60 Laptop w/ [Optimus Nvidia GTX 680m 4GB GDDR5]. I have installed 10.8.2 and boot w/ Chameleon r2165. A) When I try to UseNvidiaROM=Yes and VBIOS=Yes I get: "False ROM signature (0x4e56) - Unable to patch..." B) GraphicsEnabler correctly identifies the device: "MSI GTX 680M -xxxxxxxxxxMB - [10de:11a0]-[1462:10bc]" but VRAM size, as shown above, is not correctly identified. It should be 4096MB. Thanks
Comment 1 by Evan Lojewski, Feb 1, 2013
Please verify this issue with latest chameleon code.
Comment 2 by Tim P, Jun 12, 2013
Hi, I have Dell M6700 with Quadro K3000m and have the same problems. A) Try opening the ROM file with a hex editor, like hexfiend, and see if the first two bytes of the file are 0x55 and 0xAA. I found the ROM dumps I made from my K3000m had a lot of stuff before and after what Chameleon considers the ROM. Even so, my machine always crashes in Chameleon if I give use UseNvidiaROM=Yes. B) I can confirm that the VRAM size detection also doesn't work with a Kepler based Quadro K3000m. Tim. PS. This is with Chameleon r2238 (trunk)