Igashu

EDIT: Going to attempt to keep this first post updated with the best/most useful information for E6520 owners with Mountain Lion. Update 2013/01/03: Posting a new Extra for the E6520. Removed a faulty SSDT that got in there somehow, and reliance on VoodooHDA+HDADisabler have been eliminated with the help of iMick! Now uses a proper AppleHDA, which should both improve stability and audio quality. I'll start versioning these archives as well, labeling this one as release 3 ("r3") - will be working with the admins here to have my Extra rolled into the next EDP as well. TODO: Still using NullCPUPowerManagement, would love to get speedstep/sleep working Still get an AGPM error, need to edit for proper power mgmt Still using VoodooHDA+HDADisabler - need to work on getting the onboard IDT 92HDXX audio working the right way (resolved 2013/01/03) Confirm/fix HDMI audio output Remove reliance on legacy kexts for wifi/gfx Update 2012/10/15: Posting a new Extra for the E6520. Changed from the previous pack is an NVS4200M.kext that I created - it's a legacy kext that overrides the appropriate strings in the NVidia kexts in S/L/E, preventing the need to make any edits there whatsoever. Additionally, there is a DeviceMergeNub.kext along with some DSDT changes that enable proper operation of the Atheros AR9280. Previously, I was only able to connect to 802.11b/g networks, and failed to get a DHCP lease on any N network. As it turns out, I was loading a kext with Atheros21 support when I needed Atheros40 support. In addition to proper connectivity, AirDrop is now active and available as well. This was tested and verified working on a fresh 10.8.2 install with no modifications to S/L/E other than the myHack.kext that a myFix will add. Update 2012/08/31: Extra folder attached largely based on Loralon's work with DSDT, but I've replaced the PS2Controller/Nub kexts from my working Lion install which seem to work better, a FakeSMC that's been injected with the hardware monitoring additions from multifail, an IO80211Family.kext that includes support for the AR9280 Atheros card, and a VoodooHDA/AppleHDADisabler that will hopefully avoid the dreaded VoodooHDA kernel panics. Let me know how this works for everyone, and hopefully we can use this as a basis for an ongoing, improving EDP for the e6520 w/NVS4200M. Once we get it to a relatively stable state, we can encapsulate most of it into a nice tidy Preboot.dmg, too. Original Post: Not a lot to go on, but I'll kick this off for the E6520 owners. At this point I have a fresh installation of 10.8 that boots, but not much else. Primarily using only the default myHack Extras, but the DSDT.aml is a vanilla one for my actual system dumped from a Linux LiveCD. (I have the 2.49GHz Core i5 version of the E6500, and an Atheros AR9280 A/G/N half-height wwan adapter that I replaced the Intel with.) The Quadro NVS 4200M is totally undetected/unutilized at this point: I'm not very skilled at DSDT patching/hacking but I'm trying to go through and bring items over from my working 10.7 setup, though I know some things have changed. Any help would be greatly appreciated! Extra-Igashu-E6520-r3.tar.gz

Sure. I have already submitted it via the EDP submission form, but to be honest, I think there are a lot of modified kexts in my S/L/E too. I'll upload both, and if your system is the same as mine hardware-wise, using both of these should get Lion mostly working for you. You can grab my Extra and SLE at: http://www.mediafire.com/?oxab5yll51dhnxc (Extra) and http://www.mediafire.com/?5np8waofy9fvlo8 (SLE) That said, I haven't been able to get things up and running in 10.8 yet. Would be interested if anybody is having success there. With regard to the dual monitor question in my original posting, as I think more about it, I'm guessing that the Quadro NVS 4200M, like most other NVidia cards, can only drive two displays, regardless of how many DVI/DP connectors I have. That really reduces this to one of two questions: Is it possible to somehow disable the internal display, so that the card can instead drive two external monitors only? Is it possible to leverage the Intel integrated display adapter alongside the NVidia one (i.e. enable "Optimus" and get access to both display devices) If none of this is possible, from what I've read, the last ditch effort involves picking up a USB->DVI external display adapter, which may not have sufficient bandwidth for things like HD video and gaming, but otherwise can do a serviceable job adding an additional display for desktop computing.

I'll add my own (vanilla) DSDT, extracted from a LiveCD to the chorus. Mine differs from the others in that I have NVidia 4200M graphics, and have replaced the WWAN card with the Atheros AR9280/AGN card. Other than that, it is a standard i5-based Latitude E6520. I have a patched DSDT that I've been using on my 10.7.3 install that appears to work for most things, but I do also have a myriad of patched kext files in S/L/E. Recently, I've been trying to get ML running, but have had very limited success. (Many devices not recognized, graphics stuttery and slow, etc.) I'd be happy to do anything I can to help get an EDP ready for the 6520 . E6520-DSDT.zip

Is the E6520 close enough to the E6400/E6500 in architecture that any of this would apply to it as well?

So after months of working with it, I have most everything functional on my E6520 (currently Lion 10.7.3) - but one thing I'm still unable to get working is two external monitors (even with the dock, and both connected via DVI or DisplayPort) Each works individually, but when I 'detect displays', it only sees one of them, and of course my built-in laptop screen. Is this a driver/kext issue? Is there something else I'm not doing? I have the NVidia Quadro NVS 4200M display adapter, so not trying to work with only Intel onboard gfx. I've also tried booting the laptop closed, from the button on the docking station. In this case I do get a signal on both monitors, but once the OS begins to boot, it goes away. Any thoughts would be greatly appreciated! I have these two great monitors on my desk but am unable to take advantage of them Thanks in advance.