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OS X Mountain Lion Install Guide for Dell XPS 17 L702x Optimus

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#461
mackyreddy

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Hey Guys Hearing some problems regarding A.19 bios, those who have installed or updated to new A.19 bios just dont perform a clean installation of 7 or 8. As it would lead to an un bootable state. This is reason why dell seems to have removed download links. So stay away from new A.19 if u guys not updated, those who have already update just dont do a clean installation of windows 7 or 8.

#462
deadsmile

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Thank you very much for the intel Macky !
Was thinking about rebuilding a multiboot form scratch...
Waiting for A20 then...

#463
TimeWalker75a

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Yeah, they have issues with nvram and runtime variables. If you do clean install with UEFI Windows boot manager sets itself as boot order 0 and overrides keybindings for entering BIOS setup an boot menu .. so you can't access them anymore.

This problem with RTS impacts how clover works as well. Also I was told by Dell to do a clean install because after upgrading to 8 sleep is no longer working nor does hibernate.. even though BIOS changeling says its fixed ...! Dell is a company of shame.

#464
mackyreddy

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Its really shame on the part of Dell, especially their support to elite or premium class laptop such as XPS really sucks. Being one among the great Fotune 500 doesnt even have ethics and doesnt know how to be consistent. A.12 was good, A.14 was a disaster, A.16, A.17 & A.18 were just ok and Now another disaster with A.19. My previous $400 Dell Inspiron 1525 laptop never had such problems and still going great, just because of that i made my decision to go for XPS.

#465
brockolicosmique

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I'm having some issues trying to get the ML friendly image running on my XPS 17. I don't know if it is because of my current setup, here it is: I had installed a 2nd hard disk and at first installed Lion on it with the iAtkos L2 DVD method, keeping my Win 7 partition on the 1st hard disk. Lion was working perfectly this way, except somehow the disks would keep on switching back and forth randomly when booting up in either windows or OSX: ie. Windows disk would either display as disk0 or disk1 and OSX disk would display as the opposite, but those would switch at reboot sometimes.

I have then repartitionned the 1st hard disk into 2 partitions, installed Windows 7 in the 1st and then restored the ML Friendly image onto the 2nd one and then installed Chameleon onto that partition and used the DSTs and other files from my 10.7 disk.

When booting from the 1st hard disk, the disk0-disk1 mixing up would still occur, but also sometimes things were working or they weren't: one bootup and ML would have USB working and no artifacts, the next bootup USB wouldn't work and I was getting lots of artifacts. I have come to think that it was maybe booting up and getting the boot sequence from the 10.7 partition on my 2nd hard disk from time to time when USB was working.

I have also tried taking out the 2nd hard disk, but then it wouldn't boot anymore, giving me a Boot0/Boot1 error which even after setting the partition as active, it wouldn't work. I have also tried restoring the ML image to a usb stick and installed Chameleon, but I still get the Boot0/Boot1 error.

I'm kind of out of ideas as to how to get ML to run on my 1st hard disk, I'd really like to just format the 2nd disk and just use it for storage. Maybe I just don't know how to install Chameleon properly? Or I haven't gotten the right Chameleon package? I'm using the latest one...

Brockoli


Got it to work finally! I restored the friendly Mountain Lion image to the 2nd partition, copied all the DDST's and extra folder over from my 2nd disk's Lion partition. At this point I was getting a message about no operation system found. I fixed it by resetting the active partition with Windows 7's boot disk command line and DISKPART, then used EasyBCD to enable it. I do not have a fancy bootloader, but at least it works now...

#466
rgbastro

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Hello! What happened to mediafire folders? There are no files.

#467
romturk

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Hello everyone, Using this guide i successfully installed 10.7.4 even i had A.19 Bios on 2nd attempt. i had 10300+ score on geekbench before upgrading to 10.7.4 but now i have only 8300+. Everything seems working besides Sleep. Waiting mountain lion friendly image to re-uploaded to mediafire to give it a try.
I have 2670QM processor on a non-3D l702x. Used only kexts provided by this guide. So i can confirm it works on A.19 bios,

(as i said my only problem remains sleep which is ok. I'd appreciate any advice on geekbench. just worried i dont get max performance out of my system Thanks)

#468
mackyreddy

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Can anyone attach or upload A.19 DSDT.dsl without any modifications ? check the first page of this thread, there are instructions on how to generate DSDT.dsl.

I am bit skeptical about A.19 and haven't updated my bios, i am still stuck with A.12. So i have decided to patch and release A.19 DSDT for those who have already updated.


@ romturk

Well i will be uploading 10.8.3 image, once its available. So meanwhile those who want to update please do it manually.

#469
Zpecter

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This is the file extracted with AIDA64.

Attached File  acpi_dsdt_a19.aml.zip   16.06KB   49 downloads

I still have problems with the 10.8.2 image, I can't boot because the laptop always reboots after loading kexts. :wallbash: :(

#470
mackyreddy

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thanks zpecter, i will patch and release A.19 DSDT.aml

By the way does USB 2.0 works or do i need to patch it ?

Regarding OS X Mountain Lion try to install manually from scratch, by following the guide posted on the first page or just wait few more days, as iATKOS ML is just around the corner.

Edit:

For A.19 DSDT check the first post

#471
Zpecter

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I tried to install Mountain Lion several times and different ways, from a clean image downloaded from the appstore and other versions, and always the same result, it reboots after loading ketxs. It seems there is a problem with the USB, that's the last line I can see on a screenshot. It's weird.

#472
Tiulkin

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Hello! What happened to mediafire folders? There are no files.

I can`t download too. Please, smb upload it back. Any other images even did not boot on my XPS with i5.

#473
mackyreddy

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guys does A.19 DSDT's which i have posted does work or not ? I can see 9 & 12 people downloaded the respective DSDT's.

But if u can confirm whether it works or not, then i can attach it to the first post. As i am currently in a position where i cant test myself.

So please reply with some feedback.

regards

#474
TimeWalker75a

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Custom A19 BIOS:
- unlocked menus + UEFI Boot
- native speedsteep
- updated cpu microcodes from v23 to v28
- untouched Nvidia GPUs
--------------- above my @kasar

--------------- below by myself
- updated Intel vbios from 2104 to 2137 (thanks @jkbuha) ...should allow for higher VESA resolutions
- PlatformSmm backported from A12 to fix sleep/wake issues for OS X

To flash run 'FLASH_the_modded_bios.bat' and follow onscreen instructions. Make sure laptop is running on AC.

Attached Files



#475
Zpecter

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guys does A.19 DSDT's which i have posted does work or not ? I can see 9 & 12 people downloaded the respective DSDT's.

But if u can confirm whether it works or not, then i can attach it to the first post. As i am currently in a position where i cant test myself.

So please reply with some feedback.

regards


Hello, I couldn't try it because I can't boot into Mountain Lion, but I'll try with Lion and we'll see. :wink2:


Custom A19 BIOS:
- unlocked menus + UEFI Boot
- native speedsteep
- updated cpu microcodes from v23 to v28
- untouched Nvidia GPUs
--------------- above my @kasar

--------------- below by myself
- updated Intel vbios from 2104 to 2137 (thanks @jkbuha) ...should allow for higher VESA resolutions
- PlatformSmm backported from A12 to fix sleep/wake issues for OS X

To flash run 'FLASH_the_modded_bios.bat' and follow onscreen instructions. Make sure laptop is running on AC.


Is it safe to install this rom? Will it work with Windows 8 too?

#476
TimeWalker75a

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It's totally safe.
If you run into some issues you can always roll back using the bios crisis recovery.
It works with Windows 8 fine. The only issue I've found so far is that fingerprint reader sometimes is not reconnected after sleep in Windows .. but then again I have never checked if it worked after sleep with just the regular bios.

#477
romturk

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Just flashed modded bios no problems so far. Will try sleep etc now. Question what are optimal settings for best performance on this bios ? there are lots of settings i have never heard about felt noobish.. :)
A tutorial or list would be very much appreciated :)


Edit : I just checked sleep works after flashing modded bios. Also another thing is before i had 8300+ geekbench score now i do 10351. specs below. So this bios is best thing ever happened to me :)
http://browser.prima...kbench2/1265900

CPU : 2670QM
RAM : 8GB

#478
TimeWalker75a

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Cool, thanks for your report. So this efi diver Dell has screwed up is common for Vostro 3450/3750 and XPS L502x/L702x ... good to know, so I didn't waste a few days of debugging for nothing.

Just make sure to never enabled ports (USB/PCI-E and SATA) which are disabled from the factory.
You can:
- enable UEFI boot (to support UEFI Clover and UEFI installation of Windows -> GPT partition scheme),
- crank up the FAN kick-in temps for a little bit quieter operation ..
- enable CPU fast strings as it will boost performance a little bit further.

That's pretty much it. I wouldn't suggest touching anything IGD (HD3000) related .. but you can tamper with VRAM just a little if you are experiencing artifacts.

#479
mackyreddy

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TimeWalker75a really appreciate ur hard work on Bios mods and especially on L702x bios is really commendable.

But i was bit skeptical in updating to the custom mod bios, as i have never done something like this and this is my main workstation laptop used for work. If in case something goes wrong where can i found bios recovery (bios-mods.com) ? how to use bios recovery ?

#480
mackyreddy

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guys for more news on L702x modded bios check this link http://forum.noteboo...pu-bios-18.html

should build confidence in updating to custom modded bios.





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