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Two days ago Top Sites disappeared from Safari, than I see that iWeb dis not show pages, iPhoto did not work well, iTunes did not show cover flow and finally Google Earth didi not show anything. I discover that in Info on my Mac, on Monitor information Quartz Extreme is not supported! Fiollowing the description… ATI Radeon X600 Pro: Modello Chipset: ATY,RV370 Tipo: Monitor Bus: PCI Slot: PCI-E VRAM (totale): 128 MB Fornitore: ATI (0x1002) ID dispositivo: 0x5b62 ID revisione: 0x0000 Revisione ROM: 113-xxxxx-113 Monitor: iMac: Tipo di monitor: LCD Risoluzione: 1440 x 900 Profondità: Colore 32-bit Integrato: Sì Core Image: Non Supportato Monitor principale: Sì Mirror: Spento Online: Sì Quartz Extreme: Non Supportato Monitor: Stato: Nessun monitor collegato …………… Has anyone idea about what’s happening? I can’t use my Mac in this state… Thank you very much for any help and suggesty. Gaetano Zagra - Italy

Thank you very much for all the support. I have finally solved reinstalling MacOSX from a Combo Update. I think ity was a corrupted driver. Now this is my system configuration (as was time ago) ATI Radeon X600 Pro: Modello Chipset: ATY,RV370 Tipo: Monitor Bus: PCI Slot: PCI-E VRAM (totale): 128 MB Fornitore: ATI (0x1002) ID dispositivo: 0x5b62 ID revisione: 0x0000 Revisione ROM: 113-xxxxx-113 Monitor: iMac: Tipo di monitor: LCD Risoluzione: 1440 x 900 Profondità: Colore 32-bit Integrato: Sì Core Image: Supportato Monitor principale: Sì Mirror: Spento Online: Sì Quartz Extreme: Supportato Monitor: Stato: Nessun monitor collegato Thank you again

Quartz Extreme should always work on that mac. Try resetting the PRAM, and the PMU.

Both my mac-minis developed the “Quartz Extreme not longer supported” problem. I started my project on one then switched to the other. Reinstalling the system fixed this problem for me. It’s a tedious fix but I was on a deadline and none of the other “fixes” were working for me (like changing the display settings or restarting) Plus I ran out of computers to switch to. I was surprised that this problem goes back to early 2008 and Apple has yet to address it in any serious way. I did an exhaustive search and finally came across the re-install fix here. Thanks ifixit.com!

re-Install or upgrade mac os x to version 10.5 and upgrade safari 5.0.6 and itune 10.5 then you can see Quartz Extreme: Supportato ok

The remedy is to reinstall over the existing os, then the quartz comes back. I see the quartz disappeared under 2 conditions so far,

  1. os crash, reboot, no more quartz
  2. when the space filling up, apps start to freeze, I close all the apps, then restart, then quartz has gone Mine is mac air, so the space is pretty thin, pry why it happens to me so many times. I think it has to do with the corruption of some config files, Apple should find the way to bombproof them.