I have a small issue here with my sata dvd burner; i am using it, the burner, but i'd like entire system to run smoothly as everything else is (thanks to Zephyrot!!). AFter 10.5.1 which i was using for some time, i installed 10.5.2 amd-efi, first version that came out.
Everything is running just fine, efi+mbr, toh 9.2.0. Mobo is GA-MA790X-DS4, Amd 790x chipset/SB600. I didnt install any additional third party drivers at initial install; later i installed my 8800 GTS 320MB which is also working fine.
Both hard drives are sata2 in sata-ahci mode and dvd writer is also sata, recognized, and working fine.
Deal is when i install VIA/SB600 kexts dvd burner won't work any more, it does read the disks but won't write. I get big improvement for the hard disks (tested with xbench before and after) when i installed chipset, about 30%, sata disks are no more on unknown bus, etc. Also what i noticed there is no more s.m.a.r.t, native command queue. after installing chipset. I dont care much about that (honestly i dont know much about it) as the rest of the system is working fine. Only dvd burner is causing me troubles now.
I made backup of IOATAFamily.kext, when i load it back, DVD starts working again.
What do you guys suggest? So, with default install everything works fine, with chipset installed i get better h.drives performance but i lose dvd writer.
(here is a screenshot i made)



Other little thing is i cant make the sound work anymore. ALC889a, in 10.5.1 loading kexts with my device and vendor id was working, not now. Any ideas?

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try with this (delete the others), and for the other questions you can try a sata/usb adapter for your DVD.

What is the xbench score (disk) with or whitout the chipset kext?

Thanks roisoft, audio fixed, now working in 10.5.2. Don't have it in System Profiler but its working and i have vol.control. Thanks.

Here is disk benchmark. At some aspects results are the same and at sequental like more than 20% improvement.

Disk Test 62.61 (without chipset)
Sequential 104.21
Uncached Write 102.05 62.66 MB/sec [4K blocks]
Uncached Write 105.68 59.79 MB/sec [256K blocks]
Uncached Read 81.75 23.92 MB/sec [4K blocks]
Uncached Read 145.16 72.95 MB/sec [256K blocks]
Random 44.75
Uncached Write 15.75 1.67 MB/sec [4K blocks]
Uncached Write 114.92 36.79 MB/sec [256K blocks]
Uncached Read 95.98 0.68 MB/sec [4K blocks]
Uncached Read 147.88 27.44 MB/sec [256K blocks]

Disk Test 66.81 (with chipset kext)
Sequential 121.88
Uncached Write 126.96 77.95 MB/sec [4K blocks]
Uncached Write 125.82 71.19 MB/sec [256K blocks]
Uncached Read 99.03 28.98 MB/sec [4K blocks]
Uncached Read 145.00 72.88 MB/sec [256K blocks]
Random 46.01
Uncached Write 16.36 1.73 MB/sec [4K blocks]
Uncached Write 110.58 35.40 MB/sec [256K blocks]
Uncached Read 98.52 0.70 MB/sec [4K blocks]
Uncached Read 151.22 28.06 MB/sec [256K blocks]

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I don´see too much differences, if without the chipset kext you don´t have problems with data transfer don´t use the chipset kext.

this is my system profiler (audio)


I´ve changed the string for my Alc889a in system profiler, download this and copy into System/Library/SystemProfiler/SPAudioReporter.spreporter/Contents/Resources/"your lenguage"/Localizable.strings

You can edit the string with textedit.

Dude, works like a charm ;-) Thanks. I think my machine is all fixed now, everything works just great. Thanks a bunch!

To use the opportunity to ask you something else as i assume you are much much more experienced with Macs than i am (messing with for just 2 months). I figured a little, to make my hardware working, load kexts with my ven and dev ids etc.

But my eternal trouble is my wife's laptop (as i am in the fury of installing leopard everywhere at my home, hehe). Everex laptop, intel dual core, VIA chipset. Won't go. What i was trying was 10.5.1 (for intel), it boots from dvd but doesnt see my HD, its SATA disk on VIA chipset. Starts, Examining discs and nothing, no drives. I was trying to enter VIA sata controll for my VEN/DEV, but wont go. Definitely i do not know how to do that properly, who knows how many dvd's I burned trying to make it work and at the end I gave up. If you know how to lead me through this it will be greatly appreciated ;-)

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ur welcome


is there in the bios laptop an option for set your sata drive like AHCI? if so, set the HD to AHCI. What chipset ID? doyou have a USB HD? you can try install leopard to the usb drive try to see the internal sata from the usb editing the appleviaata....let me know your progress

No AHCI in laptop bios, thats how it works on my AMD box but i don't have any options to change anything regarding hard drive in laptop.
While booting up from the DVD there is a message:
AppleVIAATADriver: VIA Unknown (CMD 0x170, CTR 0x374, IRQ 15, BM 0x4c58)

Via chipset is VIA VN896. Sata controller is ven_1106&dev_0591, so its 0x05911106. In AppleVIAATA, under PATA i found 0x5711106 which is also my ide/pata controller and i guess its good. But under sata, in the same kext, i was trying to add my sata controller id among the others but it crashes while booting. So that was what i tried.

Ops, i see we are close to something :-) Yes i have USB drive, lacie 80gb. Trying it right now and installer finds it, so i guess i can install leopard on it.

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do you have windows in Sata drive? maybe the crash when you add your device id into the appleviaata is about your windows (ntfs) install. Try to install leo in usb and once install finishes add your sata id to appleviaata.

What leo release are you using (intel)?

edit: try with this ioatafamily.kext, delete the old one and the appleviaata.kext as well.

Yeah, there is Vista Home installed on that drive. Maybe its causing troubles, dont know for sure. I am installing it right now on usb drive. I will prepare another install with new ioatafamily.kext to see if it can help. Its kalyway 10.5.1 leo. my email is [email protected], so if you'd like we can stay in touch. Thanks buddy!

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Foobar! tried with the kext you sent me.. wont boot. Also I installed leo on usb disk and bad thing is i dont have the option in bios to boot from usb hard drive, damn.

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