The below error messages seem to be the result of kernel module calling _DSM incorrectly, meaning not a BIOS bug. However, if Switch Graphics is out-of-scope, it is not a blocker.
FAILED [HIGH] KlogAcpiBadAmlCode: Test 1, HIGH Kernel message: [ 7.995697] ACPI Warning: \_SB_.PCI0.PEG_.VID_._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20130517/nsarguments-95) Message repeated 2 times. -- FAILED [HIGH] KlogAcpiBadAmlCode: Test 1, HIGH Kernel message: [ 8.121295] ACPI Warning: \_SB_.PCI0.PEG_.VID_._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20130517/nsarguments-95) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1297207 Title: [Lenovo W540] klog failures: KlogAcpiSleepStateEvalFailed, KlogOscRequestFailed, KlogAcpiBadAmlCode To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fwts/+bug/1297207/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
