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Posts: 1
Registered: ‎02-11-2017
Location: SG
Views: 992
Message 1 of 1

Thinkpad T400 model 2768CJ6 running Ubuntu 16.04 needs a updated Bios


Dear Moderator(s)


I am having boot up warning with the current Bios that is recently updated in February 2017. This machine dual boots with Windows 10 and Ubuntu 16.04.2.  I am facing error and warning message from the Bios which can only be fixed by Lenovo Inc. Please review the bug and error messages below. 


The bug is as follows:

[ 0.000000] ACPI BIOS Warning (bug): 32/64X length mismatch in FADT/Pm1aControlBlock: 16/32 (20150930/tbfadt-623)
[ 0.000000] ACPI BIOS Warning (bug): Invalid length for FADT/Pm1aControlBlock: 32, using default 16 (20150930/tbfadt-704)


The ACPI error is as follows:

[ 1.978280] ACPI Error: Field [TBF3] at 294912 exceeds Buffer [NULL] size 262144 (bits) (20150930/dsopcode-236)
[ 1.978287] ACPI Error: Method parse/execution failed [\_SB.PCI0.VID.GETB] (Node ffff8801570b1960), AE_AML_BUFFER_LIMIT (20150930/psparse-542)
[ 1.978296] ACPI Error: Method parse/execution failed [\_SB.PCI0.VID.ATRM] (Node ffff8801570b1938), AE_AML_BUFFER_LIMIT (20150930/psparse-542)
[ 1.978304] failed to evaluate ATRM got AE_AML_BUFFER_LIMIT


I am not certain if it affects the normal shut down. Even though i can use magic sysrq key to shutdown safely, it is a hassle to do so.


Thank you for your kind assistance in issuing new update to the Bios for T400.




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