04-17-2012, 05:08 PM
Got a MBA mid 2009 - 2,13 GHz C2D, SSD 128, Lion.
For the first 1,5 year of usage - mainly office stuff - I've been experiencing only overheating problems - fans at 6200 RPM, kernel_task 150%, etc. But some day strange things began to happen.
It started with sound. System began crashing 2-3 times a day - kernel panic and nice request to hard reboot, mostly during wake-up. After one such case, there was no sound any more - speaker icon grayed out and that's it. Occasionally after hard reset sound was on for some time, but scenario was the same - kernel panics. When the sound was on, I could see the error like:
17.04.2012 21:57:51,000 kernel: Sound assertion "0 != err" failed in IOHDACodecDevice at line 161 goto Exit
17.04.2012 21:59:03,000 kernel: Sound assertion "0 != result" failed in AppleHDANode at line 307 goto Exit
Anyway, most of the time the sound was off, system run stable - as I do office stuff on my computer I did not care - thought of some hardware issue related with sound card. Unfortunately, it become worse. Yesterday I woke up the computer without Wi-Fi. AirPort icon is grayed out, and "no hardware installed" message appeared.
I've done everything - PRAM reset, SMC reset, diagnostic tool run from the CD (no troubles found), scanned computer by AV software - NOTHING. Sometimes I got only sound, sometimes Wi-fi as well, but what is the strangest - when I manage to get the Wi-Fi operational (last time it started to work after switching on Bluetooth mouse) I got "read-only" lock on my excel sheet
. Once I managed to have sound and w-fi up, but after closing lid and opening it, wi-fi stopped to work and the error appeared:
17.04.2012 19:32:38,000 kernel: no card!
As you can see, the system behaves totally awkward. It does not resemble hardware issue to me, as usually it is rather 0/1 behavior - either work or not, but what the **** is the relation between wi-fi card and filesystem?
Any ideas, clues, hints, whatever, that could help me out?