{"id":1907,"date":"2017-12-15T21:07:41","date_gmt":"2017-12-16T02:07:41","guid":{"rendered":"https:\/\/easy-admin.ca\/?p=1907"},"modified":"2017-12-15T22:44:17","modified_gmt":"2017-12-16T03:44:17","slug":"kernel-acpi-error-smbus-ipmi-genericserialbus","status":"publish","type":"post","link":"https:\/\/easy-admin.ca\/index.php\/2017\/12\/15\/kernel-acpi-error-smbus-ipmi-genericserialbus\/","title":{"rendered":"Kernel ACPI Error SMBus\/IPMI\/GenericSerialBus"},"content":{"rendered":"

I found the next error message in the CSF log<\/p>\n

ACPI Error: SMBus\/IPMI\/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517\/exfield-389)<\/pre>\n
\"\"<\/p>\n
\n\n\n\n
\n
Dec 15 10:48:57 srv kernel: ACPI Error: SMBus\/IPMI\/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517\/exfield-299)\r\nDec 15 10:48:57 srv kernel: ACPI Error: Method parse\/execution failed [\\_SB_.PMI0._PMM] (Node ffff88042949d960), AE_AML_BUFFER_LIMIT (20130517\/psparse-536)\r\nDec 15 10:48:57 srv kernel: ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20130517\/power_meter-339)<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
The message is generated every 5 minutes when lm-sensors try to read the values from the power meter sensor(s). HP has ignored the spec for this method and the result is the error shown above.
\nThe problem can be solved on two ways:
\n\u2013 you can ignore this message (it is safely to ignore)
\n\u2013 you can skip the power meter sensors (at least until someone fix this)<\/p>\n
Since I already have the latest firmware, I can\u2019t suggest the firmware update (at least for gen 6, 7 and gen8 servers).<\/p>\n
To reproduce the problem just find the file power1_average<\/em> and try to read it<\/p>\n
\n\n\n\n
\n
find \/sys\/devices\/LNXSYSTM\\:00\/ |grep ACPI000D<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
In my case the file is located in \/sys\/devices\/LNXSYSTM:00\/device:00\/ACPI000D:00\/<\/p>\n
Read the file<\/p>\n
\n\n\n\n
\n
cat \/sys\/devices\/LNXSYSTM:00\/device:00\/ACPI000D:00\/power1_average<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
The result will be probably 0 and the error will be thrown in the log.<\/p>\n
To solve the problem check the exact sensor which is affected with:<\/p>\n
\n\n\n\n
\n
[root log]# sensors\r\n...\r\npower_meter-acpi-0\r\nAdapter: ACPI interface\r\npower1:        0.00 W  (interval = 300.00 s)\r\n\u00a0\r\n....<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
As you can see above, the sensor is power_meter-acpi-0. Now disable the sensor by adding<\/p>\n
\n\n\n\n
\n
chip \"power_meter-acpi-0\"\r\n        ignore power1<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
at the end of the \/etc\/sensors3.conf file.<\/p>\n
The reboot is recommended but it is not necessary.<\/p>\n
Check the sensor again with<\/p>\n
\n\n\n\n
\n
[root log]# sensors\r\n...\r\npower_meter-acpi-0\r\nAdapter: ACPI interface\r\n....<\/pre>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
As you can see, the line \u201cpower1\u2026.\u201d is missing and the log is empty.<\/p>\n","protected":false},"excerpt":{"rendered":"
I found the next error message in the CSF log ACPI Error: SMBus\/IPMI\/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517\/exfield-389) Dec 15 10:48:57 srv kernel: ACPI Error: SMBus\/IPMI\/GenericSerialBus write requires Buffer of length 66, found length 32 (20130517\/exfield-299) Dec 15 10:48:57 srv kernel: ACPI Error: Method parse\/execution failed [\\_SB_.PMI0._PMM] (Node ffff88042949d960), AE_AML_BUFFER_LIMIT … Continue reading Kernel ACPI Error SMBus\/IPMI\/GenericSerialBus<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1907","post","type-post","status-publish","format-standard","hentry","category-general"],"_links":{"self":[{"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/posts\/1907","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/comments?post=1907"}],"version-history":[{"count":0,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/posts\/1907\/revisions"}],"wp:attachment":[{"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/media?parent=1907"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/categories?post=1907"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/easy-admin.ca\/index.php\/wp-json\/wp\/v2\/tags?post=1907"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}