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About mark9white

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    InsanelyMac Protégé
  1. mark9white

    Lenovo ThinkPad T420 with UEFI Only

    Thanks for the offer .. it's working perfectly in BIOS boot however now, so I'm sticking with it. It's exactly the same config (dsdt, kexts, config.plist etc) just with working sleep. There have been reports of the same issue from Thinkpad X220 users, and BIOS boot also fixed it for them, eg: http://www.projectosx.com/forum/index.php?s=&showtopic=2562&view=findpost&p=28407 Cheers, Mark.
  2. mark9white

    Lenovo ThinkPad T420 with UEFI Only

    @kogen @tluck I am already running r.1.3.5 AppleACPIPlatform.kext I'm afraid. I did try newer ones too and as you suggested they caused problems. However sleep does seem to generally be working much better since I've been on BIOS boot.
  3. mark9white

    Lenovo ThinkPad T420 with UEFI Only

    A quick note for anyone else having intermittent sleep issues (power light flashes quickly and fan stays on) - the only way I was able to resolve it was via BIOS boot into Clover instead of UEFI boot. Slightly slower bootup time, but apart from that seems to be working great. UPDATE: Scratch that, error just recurred
  4. mark9white

    Lenovo ThinkPad T420 with UEFI Only

    I'm on 1306 on my T420, it's working great for me (apart from the sleep problem mentioned at: http://www.insanelymac.com/forum/topic/268280-guide-thinkpad-t420-with-mountain-lion/page__st__280#entry1910057, which also happened with old Clover) with the correct amount of memory reported with the SMBIOS Trust=No config setting mentioned above (I've got 8Gb and I was also getting 12Gb reported without that setting). My config.plist is at: https://www.dropbox.com/s/1wwwk3tvi6tp41a/config.plist
  5. mark9white

    [GUIDE] Thinkpad T420 with (Mountain) Lion

    This thread has been incredibly useful in helping me turn my T420 into an almost perfect Hackintosh - thanks esp. to tluck (though lots of other contributions were also invaluable). I'm just left with one issue that some others have reported but no-one has mentioned a fix. If I put the laptop to sleep, sometimes (generally if it's been on for 10 minutes or more) it crashes, with the power LED blinking at a reasonable speed instead of doing it's usual slow fading in and out. if I put it to sleep soon after a reboot generally it sleeps fine. When it crashes the screen turns off, the fans stay on and it becomes completely unresponsive, it takes a very long press on the power button to force it off so I can reboot it. I've tried different versions of almost every kext to no avail, and tried unplugging every device including the Ultrabay. Unfortunately there's no clue in the console log. Any suggestions? (btw one tip from this thread that was really useful was following the tip to use SwitchRes, it completely resolved the ring buffer stalls for me)