This is a common BIOS bug and it is caused by BIOS AML trying to access
a variable that is outside the input buffer "arg0", i.e. the below code:
CreateWordField (Arg0, 0x11, IRQE)
In ACPI spec, _SRS's input buffer needs to be the same size of _CRS as
defined below:
6.2.15 _SRS (Set Resource Settings)
This optional control method takes one byte stream argument that specifies a
new resource
allocation for a device. The resource descriptors in the byte stream argument
must be specified
exactly as listed in the _CRS byte stream – meaning that the identical resource
descriptors must
appear in the identical order, resulting in a buffer of exactly the same length.
However, BIOS returns a smaller buffer in \_SB_.PCI0.LPCB.UAR1._CRS, and
kernel pass the small buffer to _SRS where it fails - and it simply
means that BIOS AML did not complete configuration for UAR1 device
(serial port).
Fortunately, UAR1 (serial ports) rarely needs BIOS's AML to configure -
they are configured in BIOS's POST and/or by device driver. This error
does not acutally cause any funtion failure or instablity according to
the past experiences.
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1149269
Title:
Dell Precision T1650 - FWTS reports critical errors during
Suspend/Resume testing
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1149269/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
