mdmcgee Posted January 17, 2008 Share Posted January 17, 2008 I was quite unhappy to find that the system was horribly unstable with 4gb or more of ram. BUT it could be made stable by doing one of two things : Disable - PCI Mem Remapping or setting the boot option "maxmem=3328". Each option essentially limits the max amount of memory in the machine to 3.2 GB even if OSX reports seeing 4g. In attempting to fix it, I reinstalled the system and decided to disconnect or turn off ALL other disks during the install then only turn on HW and bios options until it crashed again. Upon each reboot I fired off memtest and started a bunch of apps including vmware. For my system enabling the JMicron ATA interface in either IDE or AHCI always caused the issues but with it disabled I could reliably use all 4gb and I could leave PCI Mem Remapping enabled and without setting maxmem. I changed the mode to IDE and removed the JMicron Extensions and the system is solid as a rock unless you try to use "Spaces" with the screen rotated. Link to comment https://www.insanelymac.com/forum/topic/82164-asus-p5k-deluxe-4gb-ram-issue-resolved/ Share on other sites More sharing options...
ooZberg Posted January 17, 2008 Share Posted January 17, 2008 Interesting, I also had stability issues (random freeze) when I had my JMicron controller enabled. I removed the IDE disk and disabled the controller to get rid of the problem. So it is apparently a lack of 64bit compatibility in the JMicron driver that causes this problem. Link to comment https://www.insanelymac.com/forum/topic/82164-asus-p5k-deluxe-4gb-ram-issue-resolved/#findComment-583555 Share on other sites More sharing options...
walterav Posted January 18, 2008 Share Posted January 18, 2008 EDITED 19-01-2008 Hi there, Here on the p5k-e wifi/ap there were only REALBAD lockups when the jmicron was enabled... and an IDE/pata disk was in use...also when the whole controller is disabled the system runs a little snappier... noticed it when played a lot longer with the pc during heavy duty diskwriting/virtualization etc... Have tried AHCI mode on the jmicron and also tried IDE, BOTH CRASH WITH PATA DISK CONNECTED Maybe need to try other driver... Retail leopard doesn't see recognize it by default... so nice environment to experiment with drivers... Patching AHCI IOATA and IOAHCI would let e-sata ports work... the ide ports only work with a patched jmicronata kext There are also patched VIAATA and LPC / genericata kexts... which might do the trick, but not in need of the IDE anymore so disabled it... PS:ich9 the 6 internal sata ports also work hotswap "the 6th port on the motherboard says sata6-e1" Anyone can confirm esata working stable on jmicron? Link to comment https://www.insanelymac.com/forum/topic/82164-asus-p5k-deluxe-4gb-ram-issue-resolved/#findComment-584798 Share on other sites More sharing options...
Recommended Posts