Hello, I have Debian/Sid/2.6.18.2-amd64-smp on an Asus A6Tc-AP014H laptop and there are many problems with ACPI. But the most annoying one is that I'd like it to suspend-to-ram. More precisely, it does suspend, but doesn't resume: the hard-drive does not return from power-saving mode. The screen remains off, the system freezes, with solid HD activity light. This is common with SATA disks... but mine is a PATA one. Apart from that, as you asked: > Asus Laptop ACPI Extras version 0.30 > Error calling BSTS > unsupported model A6Tc, trying default values > send /proc/acpi/dsdt to the developers you'll find it on http://81.56.123.123/~jm/A6Tc-AP014H/ with other information about my config. Note there are unknown opcodes, and even after having removed the 4 errors at the beginning of dsdt.dsl, it still fails to recompile. Linux 2.6.18-486 (Debian) boots but Linux 2.6.18-amd64-smp doesn't: it crashes just after > io scheduler noop registered > io scheduler anticipatory registered (default) (or just before "0000:00:0b.0 OHCI: BIOS handoff failed (BIOS bug ?) 000007b4") I need to add either "acpi=noirq" or "noapic" to the kernel command line. "acpi=noirq" gives better results: USB doesn't work with "noapic" (I have exactly the same problem as https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=205672) There are really a lot of awful things in the dmesg: * yet another invitation: > PCI: Bus #04 (-#07) is hidden behind transparent bridge #03 (-#04) (try 'pci=assign-busses') > Please report the result to linux-kernel to fix this permanently * "pcie_portdrv_probe->Dev[02fd:10de] has invalid IRQ. Check vendor BIOS" (I already have the latest BIOS) By curiosity, is CONFIG_ACPI_SLEEP required for suspend-to-ram? Before I enable it, I couldn't write to /sys/power/state: > echo: write error: Operation not permitted Google always tells me CONFIG_HOTPLUG_CPU is required (it was already enabled) but never mentions CONFIG_ACPI_SLEEP, while Linux says: "This option is not recommended for anyone except those doing driver power management development." (drivers/acpi/Kconfig:64) JM - 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