A new theory regarding lvds detection
Because the vaio f11 (and maybe yours too) has internally the same system as a dual graphics cards system, but has no intel graphics, it produces an error when detecting the internal display. I think the f11 has the same chipset and has a acpi/dsdt that is actually for a dual gfx system. So it's a bug, and nvidia fixed this for Sony.
There seems to be a hidden advanced menu in the bios options when pressing f2 at vaio logo. But you have to carefully patch your bios first. I already tried it, but stuck in the procedure (the bios dump tool flashit.exe in freedos from usb stick reports the error "Error IHISI 10h fail"). There are two ways to read, modifiy and then dump the bios: The first one with freedos/flashit and the second with a efi boot application, but you need to disconnect all drives first I believe.
This advanced menu has an option called "F2->BIOS->Advanced->Peripheral Config.->VGA Switching Policy: Auto/Static"
This option needs to be at "static", but it's on "auto" by default. So the nvidia driver that was programmed for the macbookpro (which is a dual gfx system) tries to enable the internal screen on the intel gfx, but it's is not there on our system.
I think that's the reason why the internal screen remains black. If someone is able to successfully activate his advanced options and set vga switching policy to "static", I think this could do the trick.
Read detailed infos here: Activate advanced options on Vaio Z 13.3 series with freedos/flashit Activate advanced options on vaio by using a efi boot application General info about activating advanced options for all insyde bios notebooks (including vaio) Detailed description of the vaio dual gfx problem that also appeared on linux
Please try by yourself.
- Carefully read the warnings. If you modify your bios at a wrong offset, it can result in a non booting vaio and you have to pay for a repair.
- The offsets can maybe differ on different vaio models. But there a methods to detect these offsets.
- You cannot use a bios dump provided by sony directly. There are somehow compressed and maybe encrypted. You have to rip it off from your bios directly, then it's plain. EDIT: This point is just my theory and not approved More info about VAIO F11 smbios/systembios
- It's a AMI APTIO bios, the recent generation of bios types from AMI/American Trends Inc. Some part of the bios has been developed by Insyde. But the bios is still a AMI APTIO one.
- The official tool to enable/disable bios default options is called AMIBCP 4 or later. The older versions were feely available, the v4 not. There are some version like AMIBCP 7.60 etc available, but these versions are OLDER than AMIBCP 4.
- It's a some kind of UEFI bios.
- Todays bioses are collections of chunks, different subbioses of hardware components and validation keys. Useful bios tools for vaio
- Universal BIOS Backup (works for me) - link
- ezh20 v1.403 english (some kind of bios modifier tool, works with universal bios backup extracted files, rename rip to XX.FD) - link
(or google for "ezh2o2")
- RW-Everything 1.4 or later (extracts detailed bios, acpi and system infos, also good for extracting a valid dsdt etc.) - link