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Discuss Acer 5739G & iATKOS v.7-Video freezing question at the Hardware - Hackint0sh.org; Hi guys/gals I'm new on this forum and also a noob in hacked Mac OSX. ...
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    Default Acer 5739G & iATKOS v.7-Video freezing question

    Hi guys/gals I'm new on this forum and also a noob in hacked Mac OSX. However I installed successfully a dual boot between Win 7 64bit & iATKOS v7 onto my Acer 5739G. Now I have a few questions and I hope I can find the answer here. Any help will be appreciated. Note: Sorry for the long post but I think its better to give all the background information so you people can understand what is the problem. Thank you

    Acer Aspire 5739G:
    Intel Core 2 Duo P7350 (2GB, 1066 FSB, 3mb Cache)
    4 GB DDR3 1066 Mhz Ram
    Nvidia GeForce GT 130M (this is the hardware that is causing problems)
    500GB HDD

    I have 3 partitions onto the hard-drive: 50 GB For Win 7 (+100MB system reserved), 50GB for Mac OSX and the rest of the space for games, tools, videos etc.

    iATKOS Setup Configuration I have choosed:

    iATKOS essential system;
    Bootloader = Chameleon 2;
    x86 Patches = Extra, DSDT, Decripter - AppleDecrypt, Apple SMBIOS by Netkas, ACPI - x86 ACPI & Disabler;
    System = Sata (ACHI), Intel Speedstep (both), Apple PS2, Laptop Battery & NTFS - 3G.
    Video = GT 200 EVGA & NVinject.

    The dual boot works just fine, both Win7 and Mac OSX works. But there is a problem with this Nvidia GeForce GT 130M graphics card.

    For example if I watch youtube the laptop will freeze within 5-10 minutes of use. This happens in both operating systems but very very often in Mac OSX. This makes it impossible for me to work with GarageBand, and GarageBand is the reason i have installed Mac OSX onto this laptop.

    I did a bit of research and the problem starts from Nvidia drivers and Nvidia Powermizer Technology. Whenever this Powermizer starts to kick in the laptop freezes. This not only happens with normal PC use but in some games aswell - I think it depends of the 3D platform, like OpenGL or Direct3D.

    Now, there is a Fix for Windows that prevents this crashes from happening:

    This is the manual way, there is also a program that does this automatically - program name is Powermizer Switch:

    1.Open up Regedit and go to \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contr ol\Video\********\0000\
    The *'s will be random numbers. There will be a few of them, pick the one with the most stuff in it.
    2.Create the 4 Powermizer keys (these will all be DWORD):
    PerfLevelSrc
    PowerMizerEnable
    PowermizerLevel
    PowermizerLevelAC
    3.Change the values (double click on them) to:
    PerfLevelSrc 3322 (I changed to 2222 to completely disable PowerMizer)
    PowerMizerEnable 0
    PowermizerLevel 1
    PowermizerLevelAC 1
    4.Reboot and Powermizer will be disabled!

    Now, My Questions are:
    1.Is there any way I can modify the same registry on MAC OSX or install a different driver/kext or any other tweaks to fix this hang up problem ?
    2.If I disable all this Mac OSX smooth/fade in effect (don't know if it's possible?) may fix the problem?


    Thank you very much and sorry again for the massive post.



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    Hi there,
    Thank you for your very detail post on both system and problem. It makes it so much easier to follow and to try giving some suggestions (many people who request help don't understand that others are not sitting in front of their troublesome computers and can not read people mind to know what going on).
    IMHO, Windows and OSX are totally different OS so registry in Windows doesn't have any common ground in OSX (which based on Unix and you can listen to other better opinion than mine).
    It looks like what you have is an incompatible video kext so disable features may not solve your problem. You can try to load other kext and see if it improve. I read that you have NVinject loaded. You can delete everything related to NV in /S/L/E and/or /E/E and load ATI ATY_init kext for video injection and see if that cut it. More information can be found at netkas.org. Good luck.
    Regards,

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    Hi. Thanks for the replay. I am going to try what you have said. Could you please expand & explain more on how to delete the kext in "/S/L/E and/or /E/E" ? I have a fair idea but it doesn't always work.

    This is the way I do it:
    1. -s when the bootloader pops up
    2. /sbin/fsck -fy
    3. sbin/mount -uw /
    4. cd /System/Library/Extensions
    5. rm -rf kext_name.kext (where kext_name is the name of kext)
    6. reboot
    Is this correct? Also how do I list out the files in /Extensions? I remember in windows is "dir" but this doesn't work on the mac.

    Thanks

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    Hi,
    You could do it from the terminal. It is a bit hard and only if I have to. I assume it still boot up, so just go to you root partition (hard disk) and those folder should be there, and then navigate to your desired folder, right click on the file and choose delete option.
    First I suggest you go to System Profiler, to hardware and under video/graphic card to check your video status. It should list your card manufacturer, model number, device ID along with loaded video kext, and if QE is supported or not.
    Then you can try to replace your video kext with another one and see if it improve. Beside that method on my last post, there is also GFX EFI string injection into com.apple.boot.plist. We just have to try because of different hardwares, so it is very hard to know for sure if a certain method is guarantee to work every time. It is also recommended to do a backup, just in case, before attempting any modification/replacement of system files.
    Regards,

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    Moderator Array ratvn's Avatar

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    Hi there,
    I almost forget one important detail because it still doesn't explain why you computer freeze after 10-15 min of using your tubes. Could you check under video/graphic card to see if it say Core image: hardware accelerated, and QE supported. What those mean is that video playing utilized your graphic card GPU for processing.
    If it says core image: software, and QE not supported then we think we are on the right track. Your CPU is, without video hardware support, doing all the video processing (will be almost full load) and will get very hot after a little while and cause the system freeze (to protect CPU from burned out).
    If that is the case then trying for better kext is definitely needed.
    Regards,


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    Hi there man,
    Ok i have changed the kext. Now I have installed ATI_init.kext and Nvidia GT200 (not Nvidia GT200 EVGA). Video works but it still freezes. Sometimes it freezes even if I drag a window from left to right.

    This is what it says under video:

    CHIPSET MODEL: NVIDIA Graphics Card
    TYPE: Display
    BUS: PCIe
    PCIe LANE WIDTH: x16
    VRAM(Total): 1024MB
    VENDOR: Nvidia (0x10de)
    DEVICE ID: 0x0652
    REVISION ID: 0x00a1
    ROM REVISION: netkas.org

    Display:
    RESOLUTION: 1366x768
    DEPTH: 32-BIT Color
    CORE IMAGE: Hardware Accelerated
    MAIN DISPLAY: Yes
    MIRROR: Off
    ONLINE: Yes
    QUARTZ EXTREME: Supported
    ROTATION: Supported
    Display Connector:
    STATUS: No Display Connected

    Any ideas? Thanks

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    Hi,
    Well done! It looks like you get your video card working very well, with full QE/CI and it can even set your display at correct resolution. You're lucky. So I don't think your problem related to software driver. It might have something to do with hardware. Have you check your hardware manufacturer for any updates, BIOS etc.
    I will search around see if I can come up with anything.
    Regards,

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    Hi there,
    I did some search and read through 15 pages of a forum posting your particular laptop problem in which they have both Vista and 7. My impression is that it's independent of OS's and they have to turn it off using Windows registry, and the fix causing the laptop runs hotter than usual. My speculation is that could be a part of the video card firmware/driver in the laptop chipsets drivers/BIOS. For OSX to exist such feature maybe hard to find (lucky enough to get it fully working). So if you could check to see if there is any update for your BIOS regarding issues with video driver or overheating problem, or you could go to your BIOS to see if there any power management settings that could reduce the problem occurrence.
    Good luck.
    Regards,

 

 

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