Hi, Ryan Lortie <desrt <at> desrt.ca> writes: > I have been working on getting my new Macbook working with Ubuntu dapper > for suspend. >[...] > After this fix I noticed that ACPI was non-functional after reboot. > This is because the irq9 handler gets disabled with the "nobody cared" > message. > > This happens because when the machine comes up, irq9 is high > (level-triggered) but the ACPI code doesn't think it has anything to do. > It therefore returns IRQ_NONE instead of IRQ_HANDLED and the kernel > starts ignoring irq9 (preventing ACPI from working). > > I found that the cause of this problem is that when the laptop returns > from sleep the SCI_EN bit has been cleared. > [...] > Currently in my custom-patched kernel I have a quick outw(1, 0x404); as > soon as the system comes back from sleep (before re-enabling interrupts, > even). This fixes the problem and no spurious irq9's are issued. Same symptoms for me on an Intel Core Duo Mac Mini (I had filed a bug about it http://bugzilla.kernel.org/show_bug.cgi?id=6670 ). Ryan's hack does fix it as well for me; anybody has any clue how to fix that properly ? Fred. - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
