I think I've figured out the first warning: [ 11.149181] ACPI Warning: 0x0000000000000460-0x000000000000047f SystemIO conflicts with Region \_SB_.PCI0.HEC1.TCOS 1 (20120320/utaddress-251) [ 11.149186] ACPI Warning: 0x0000000000000460-0x000000000000047f SystemIO conflicts with Region \_SB_.PCI0.HEC2.TCOS 2 (20120320/utaddress-251) [ 11.149189] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 11.149190] lpc_ich: Resource conflict(s) found affecting iTCO_wdt
ACPI OpRegions defined by \_SB_.PCI0.HEC1.TCOS and \_SB_.PCI0.HEC2.TCOS are conflicting with the same I/O region used by the lpc_ich driver for the Intel TCO (Total Cost of Ownership) timer (iTCO_wdt, this is a watchdog timer that will reboot the machine after its second expiration). According to Intel Controller Hub (ICH) specifications, the TCO watchdog has a 32 bytes I/O space resource. ACPI OpRegions in the DSDT frequently reserve this TCO I/O space because they require access to bit 9 (DMISCI_STS) of the TCO1_STS register of the TCO. I believe that this bit is not used and is never used by the lpc_ich TCO driver, so the risk of conflict is zero. The warning occurs because ACPI has reserved this I/O region and the lpc_ich driver also wants to access the TCO registers but detects these are already reserved. However, I believe that there is no real conflict to worry about. It would be useful to have a dump of the ACPI tables so I can validate this assumption though. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1181889 Title: After installing ubuntu12.10 x64, dmesg has some error logs. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1181889/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
