<!-- TITLE: ERR-SYS-00003: Errors when Running the "sensors" Command on a HP MicroServer Gen8 --> <!-- SUBTITLE: ACPI-related Dmesg Outputs Triggered by Reading of Power Metre Values --> # Summary When running the `sensors` command from the `lm-sensors` package to review system sensor readings, you may encounter error outputs from the framebuffer terminal ("TTY"), or within the `dmesg` log - similar to the example below: ``` [...] ACPI Error: SMBus/IPMI/GenericSerialBus write requires Buffer of length 66, found length 32 (20170728/exfield-427) [...] ACPI Error: Method parse/execution failed \_SB.PMI0._PMM, AE_AML_BUFFER_LIMIT (20170728/psparse-550) [...] ACPI Exception: AE_AML_BUFFER_LIMIT, Evaluating _PMM (20170728/power_meter-338) ``` Along with the error above, you may see this seemingly erroneous reading for the `power_meter-acpi-0` device: ``` power_meter-acpi-0 Adapter: ACPI interface power1: 0.00 W (interval = 300.00 s) ``` # Possible Cause Not yet identified. Upstream bug report pending. # Workaround To workaround this issue before an upstream fix (possibly from the Kernel) is available, to resolve this issue, one would have to blacklist the offending `power_meter-acpi-0` device from the `sensors` reading. With your text editor of choice... ``` sudo nano /etc/sensors3.conf ``` And append the following to the end of the file... ``` chip "power_meter-acpi-0" ignore power1 ``` # References - Launchpad Bug #606999, from July of 2010 - [Link](https://bugs.launchpad.net/ubuntu/+source/acpi/+bug/606999).