Created attachment 114371 [details] dmesg log and acpi table (acpidump) The boot log show: # cat /var/log/dmesg | grep 'ACPI Error:' [ 5.250713] ACPI Error: No handler for Region [SYSI] (ffff8810790cb540) [IPMI] (20130328/evregion-161) [ 5.250722] ACPI Error: Region IPMI (ID=7) has no handler (20130328/exfldio-305) [ 5.250727] ACPI Error: Method parse/execution failed [\_SB_.PMI0._GHL] (Node ffff8830794b4740), AE_NOT_EXIST (20130328/psparse-537) [ 5.250738] ACPI Error: Method parse/execution failed [\_SB_.PMI0._PMC] (Node ffff8830794b4718), AE_NOT_EXIST (20130328/psparse-537) It was discussed in this bug: https://bugzilla.kernel.org/show_bug.cgi?id=46741 But the patches there does not fix it in this case(not a ACPI or IPMI bug). And the maintainer of that bug kindly advise me to report this bug: > As your problem is related to the PNP0c01, not IPI0001 (so it shouldn't be > an ACPI bug or IPMI bug, your case is a PnP bug or a driver core bug), I > suggest you to start another thread to report the following issue: > > If both PNP0c01 and IPI0001 were marked for the local BMC, Linux could not > automatically match the "ipmi_si" driver (drivers/char/ipmi/ipmi_si_intf.c) > but match the "system" driver (drivers/pnp/system.c) for the device instead. > Device (NIPM) > { > Name (_HID, EisaId ("IPI0001")) // _HID: Hardware ID > ^^^^^^^ > Name (_CID, EisaId ("PNP0C01")) // _CID: Compatible ID > ^^^^^^^ > I checked all of the PNPIDs related to PNP0c01 and IPI0001, got the > following proof: > system 00:07: Plug and Play ACPI device, IDs IPI0001 PNP0c01 (active) > ^^^^^^ ^^^^^^^ ^^^^^^^ > The "system" driver gets higher precedence to be matched for your IPMI local > BMC. > static const struct pnp_device_id pnp_dev_table[] = { > /* General ID for reserving resources */ > {"PNP0c02", 0}, > /* memory controller */ > {"PNP0c01", 0}, > ^^^^^^^ > {"", 0} > }; > > It looks to me like the "system" driver is a wrong approach or Linux driver > core need to be improved. This is another issue and I'm not a PnP expert, > so you need to ask PnP guys to check if drivers/pnp/system.c can be changed > from a PnP driver to a functional module to reserve resources. > $ uname -a Linux dell-JM3Q 3.10-0.bpo.3-amd64 #1 SMP Debian 3.10.11-1~bpo70+1 (2013-09-24) x86_64 GNU/Linux