[Bug 1940] ibook doesn't "wake up"

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Ubuntu | linux





------- Additional Comments From daniel at gimpelevich.san-francisco.ca.us  2005-07-27 19:20 UTC -------
The current Ubuntu-breezy is installed, and wake-from-sleep fails in exactly the manner described 
above. Here is /proc/cpuinfo:
processor	: 0
cpu		: 745/755
temperature 	: 15-17 C (uncalibrated)
clock		: 400MHz
revision	: 51.17 (pvr 0008 3311)
bogomips	: 797.35
machine		: PowerBook4,1
motherboard	: PowerBook4,1 MacRISC2 MacRISC Power Macintosh
detected as	: 257 (iBook 2)
pmac flags	: 0000001b
L2 cache	: 256K unified
memory		: 384MB
pmac-generation	: NewWorld

Stopping the dbus service does allow it to wake up. There was some question about how this interacts 
with the kernel, and I believe I have found the underlying kernel-level problem. With the dbus 
service (including hal) still running, removing the ide-cd module also allows it to wake up. The 
problem appears to be that the module tries to force DMA on too early. The real solution is to 
rewrite the resume code in the ide-cd module.

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