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[Guide] Dell XPS 15 L502X (Early 2011) Snow Leopard Install (possibly L702x too)

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#2161
TimeWalker75a

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It should.
Also it's worth trying to swap it for a newer one, not an older one... since we are using a Gigabyte desktop motherboard VBIOS now it's very likely to support higher resolutions.

#2162
t6590

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@jkbuha i tried to get to you at bios mods but couldnt(server seesm overloaded) could you give me the winflash you use for your modded 15z l511z .i have the same laptop and the winflash i use keeps giving me "error parameter" i tried with your A11 and A12 mods but nothing .....could you tell me what i am missing.

#2163
jkbuha

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hmmm it's the same winflash that's packaged into the default bios executables.

download the A11/A12 bioses from dell, run it and before the flash confirmation message comes up copy the winflash (and stock bios) files from your temp directory into a safe place.

#2164
TimeWalker75a

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Hey @DoiX,
I was able to troubleshoot .. the module which causes sleep/wake issues for OSX is PlatformSmm.efi and has GUID of CB73C3D9-2F01-4342-AE67-04DDE5264092
If you backport it from A06 to any version higher it will restore proper wake ...

Regarding VESA resolutions try the VBIOS @jkbuha has posted .. it's v2137.0 from a Lenovo laptop.. it carries 1366x768 for my LVDS and others (Inspiron 15R for example), so there's a high chance it will support Full HD as well.

#2165
jkbuha

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Yes Lenovo's 2137.0 supports full HD because I'm running twin 1920x1080 (LVDS+DP) screens in OSX. I'm looking for v2143 at the moment but it doesn't seem that a (mobile) version of the vbios has been deployed anywhere yet.


Will keep y'all posted...

#2166
DoiX

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@TimeWalker, thanks for the heads up. I'll try it this weekend i hope.

Does anyone know if it's possible to repair Windows Registry from OS X? For some reason my freshly installed W7 dropped dead the next day. As soon as the window logo disappears i encounter a short bluescreen then reset.

#2167
jkbuha

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use hiren's bootcd with win7. boot & fix/replace registry.

just a heads up that i had the same problem and found out that it was because of ESET. just saying

#2168
TimeWalker75a

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Can be due to ATA/AHCI mode failing as well. Try swapping the setting in your BIOS.
I'ts a good practice to disable autoreboot after BSOD occurs to be able to read the code.

#2169
t6590

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@jkbuha i managed to get it working finally..but now after install of osx i still get the system operation not found ...i enabled uefi boot in bios ....what causes this error on dell xps and is there a fix for it.....@timewalker you can also chime in here coz i heard you may have heard the same issue here.

#2170
TimeWalker75a

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Yeah, sure can.

You can't format as GPT and run a legacy bootloader (Windows XP/ Chameleon/Chimera/Legacy Installation of 7/8/Ubuntu)
To be able to utilize GTP-formatted hard disk you have to use a UEFI-compliant bootloader, such as Clover-UEFI for OSX and other OSes (which is a little bit finicky for Tiano UEFI, but still works absolutely fine thanks to @dmazar) or Windows Boot Manager (bootmgr.efi) well, for Windows-only obviously.

#2171
Zulakis

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My L702x always immediately reboots when "Starting darwin x86_64" appears while booting from usb. I used pzwiz Mountain Lion guide to do a fresh install, but also got this on my already installed mountain lion installation (Didn't use for a long time because of graphics problems, now wanted to try again)

I already tried different Bios Versions (A19 modded, A18, A17) and made a fresh usb stick multiple times. I also tried using only one ram module.

Any ideas how I could fix this?

Edit:
Got it fixed, I had to use another version of chameleon. r2070 from enoch did it for me.

#2172
t6590

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thank you for the quick response timewalker i will look to try it and report back

#2173
TimeWalker75a

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Anyone using IOWMIFamily for brightness controls?
Mine has stopped working for some reason in 10.8.2 .. I thought it was because of updating to A13, but rolling back to A04 didn't seem to fix it ..
The Fn+F4/F5 won't respond anymore .. I mean they don't adjust brightness any longer, nor the indication appears on screen.
I can set brightness controls from F14/F15 to just F4/F5 from Keyboards Preferences .. but I would like to have it like it was previously..

Any thoughts ?
Try this kext here please: https://dl.dropbox.c...Family.kext.zip
It should parse 0xE005 0xE006 WMI scancodes from the respective keys ..

#2174
DoiX

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@TimeWalker, did you compile it yourself? This will sound stupid but... since ML, XCode is {censored} (more than it was before) although some kexts and apps compile without errors they are not complete. I noticed it when i compared a Lion compiled kext to a ML compiled one (same arch, same proj settings). Obviously the ML one didn't work.

Now, that kext doesn't work for me. Maybe you should give this one a try: https://dl.dropbox.c...Family.kext.zip

#2175
TimeWalker75a

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I did compile it myself ages ago (prior to having ML installed, so it's not the xCode's fault), I have altered it so that it would read appropriate byte (05 or 06) from the WED output (which is the INFO array).
It worked previously in 10.7 .. and 10.8 if I recall correctly .. but now it just does absolutely nothing. Even debug logging is not showing up ..

#2176
DoiX

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Try the one i linked.

#2177
TimeWalker75a

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Sadly it doesn't work. Same behavior as with mine.
No reaction to key combinations, no output in the IOLog ..
DellWMIController is present in IORegistry, all the keys defined in the wmi keyboard driver are showing up in the KeyMap .. but nothing.

#2178
DoiX

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Try unloading it from the terminal, if it's really used by the system you will get some error message. Other obvious questions: did you manually delete the cache files, boot with -f mode?

#2179
TimeWalker75a

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Obvious answer to an obvious questions (clover has no -f flag .. but anyway there's an alternative) - yes I did.
The system indeed says

(kernel) Can't remove kext com.darwin.driver.IOWMIController; services failed to terminate - 0xdc008018.
Failed to unload com.darwin.driver.IOWMIController - (libkern/kext) kext is in use or retained (cannot unload).


Maybe they have transitioned away from using WMI (for Win 8) for brightness controls and now rely on regular scancodes such as for media-buttons and sound?
This must be hardcoded somewhere inside EC, since I haven't rolled back that part when downgrading back to A04 this has probably stayed .. ? Anyone with the latest bios can confirm this or prove this otherwise ?

#2180
DoiX

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I used to have a ApplePS2 kext that had debug activated, unfortunately i can't find it, if you have a compilable source code make it yourself and see if the fn keys are being detected now.

I tested A12 a week ago, as far as i remember, the Brightness keys worked. I'll flash it again as soon as hiren's boot CD is done burning.





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