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acpi_smc_platformplugin timed out lion

4 posts in this topic

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Hi people,


I recently installed OS X Lion on my acer aspire 5750, and it wouldn't boot up.

It always fails with acpi_smc_platformplugin timed out.

However, if i boot from my usb installer drive, it boots fine.

I installed using the myhack method (myhack.sojugarden.com/guide/)




Operating System1 Genuine Windows® 7 Home Premium 64-bit2

Genuine Windows® 7 Home Basic 64-bit2 CPU and chipset1 Intel® Core™ i7-2620M processor (4 MB L3 cache, 2.70 GHz with Turbo Boost up to 3.40 GHz, DDR3 1333 MHz, 35 W), supporting Intel® 64 architecture, Intel® Smart Cache


Intel® Core™ i5-2410M/i5-2520M/i5-2540M processor (3 MB L3 cache, 2.30/2.50/2.60 GHz with Turbo Boost up to 2.90/3.20/3.30 GHz, DDR3 1333 MHz, 35 W), supporting Intel® 64 architecture, Intel® Smart Cache


Intel® Core™ i3-2310M processor (3 MB L3 cache, 2.10 GHz, DDR3 1333 MHz, 35 W), supporting Intel® 64 architecture, Intel® Smart Cache


Mobile Intel® HM65 Express Chipset System Memory1, 3, 4, Dual-channel DDR3 SDRAM support:

  • Up to 4 GB of DDR3 system memory, upgradable to 8 GB using two soDIMM modules5

Display 15" HD 1366 x 768 pixel resolution, high-brightness (200-nit) Acer CineCrystal™ LED-backlit TFT LCD, supporting simultaneous multi-window viewing via Acer GridVista™

Mercury free, environment friendly

16:9 aspect ratio Graphics Intel® HD Graphics 3000 with 128 MB of dedicated system memory, supporting Microsoft® DirectX® 10.1

Dual independent display support

16.7 million colors

External resolution / refresh rates6:

  • VGA port up to 2048 x 1536: 75 Hz
  • HDMI™ port up to 1920 x 1080: 60 Hz

MPEG-2/DVD decoding

WMV9 (VC-1) and H.264 (AVC) decoding

HDMI™ (High-Definition Multimedia Interface) with HDCP (High-bandwidth Digital Content Protection) support Audio Optimized Dolby® Advanced Audio® v2 audio enhancement, featuring Audio Optimizer, Audio Regulator, Volume Leveler, Volume Maximizer, and Surround Virtualizer for Built-in Speakers technologies7

High-definition audio support

Two built-in stereo speakers

MS-Sound compatible

Built-in microphone Storage Hard disk drive

  • 160/250/320/500/640 GB or larger hard disk drive1, 8,

Multi-in-1 card reader, supporting:

  • Secure Digital™ (SD), MultiMediaCard™ (MMC), Memory Stick PRO™ (MS PRO), xD-Picture Card™ (xD)

Optical media drive1 4X Blu-ray Disc™/DVD-Super Multi double-layer drive:

  • Write: 16X CD-R, 10X CD-RW, 8X DVD-R, 8X DVD+R, 4X DVD-RW, 4X DVD+RW, 5X DVD-RAM, 4X DVD+R DL, 4X DVD-R DL

8X DVD-Super Multi double-layer drive:

  • Write: 24X CD-R, 16X CD-RW, 8X DVD-R, 8X DVD+R, 4X DVD-R DL, 4X DVD+R DL, 6X DVD-RW, 8X DVD+RW, 5X DVD-RAM

Webcam Acer Video Conference1, featuring:

  • Acer Crystal Eye high-definition webcam, 1280 x 1024 resolution

Wireless and networking WLAN1, 9, 10,

  • Acer InviLink™ Nplify™ 802.11b/g/n Wi-Fi CERTIFIED™
  • Acer InviLink™ 802.11b/g Wi-Fi CERTIFIED™
  • Supporting Acer SignalUp™ wireless technology


  • Bluetooth® 3.0+HS
  • Bluetooth® 2.1+EDR


  • Gigabit Ethernet, Wake-on-LAN ready

Privacy control1 BIOS user, supervisor, HDD passwords

Kensington lock slot Dimensions and weight 15 (W) x 9.96 (D) x .99/1.30 (H) inches (381.6 x 253 x 25.2/33.2 mm)

5.74 lbs. (2.6 kg)11 with 6-cell battery pack Power adapter and battery ACPI 3.0 CPU power management standard: supports Standby and Hibernation power-saving modes

3-pin 65 W AC adapter:

  • 3.74 (W) x 1.96 (D) x 1 (H) inches (95 x 50 x 25.4 mm)
  • 0.47 lbs. (216 g)11 with 180 cm DC cable

48.8 W 4400 mAh 6-cell Li-ion standard battery pack

Estimated Battery life: 4.5 hours12

ENERGY STAR® Input and control 103-/104-/107-key Acer FineTip keyboard with independent standard numeric keypad, international language support

Multi-gesture touchpad, supporting two-finger scroll, pinch, rotate, flip

Media control keys (printed on keyboard): play/pause, stop, previous, next, volume up, volume down Input and output Multi-in-1 card reader (SD™, MMC, MS PRO, xD)

USB 3.0 port1

Two USB 2.0 ports

HDMI™ port with HDCP support

External display (VGA) port

Headphone/speaker jack, supporting 3.5 mm headset with built-in microphone for Acer smart handhelds

Microphone-in jack

Ethernet (RJ-45) port

DC-in jack for AC adapter


Help please!

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I got it working again thanks for your help! :-)

Is not enough to say "I have solved" if you solved post the solution as you seek for a solution here, so post the solution here.

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