What is exactly WMI and why my Linux machine fails to use it?

I noticed such a line in my dmesg:

[    2.854164] hp_wmi: query 0xd returned error 0x5

As far as I googled, WMI is some Windows-specific tool. But my Ubuntu PC still tries to use it! I found a driver which is probably used in here in Linux core, but the source code doesn't tell anything to me. Even more, I can find nothing about query 0xd here. What is this tool and how can I fix this error?

biryulin04

Posted 2019-12-05T08:04:27.977

Reputation: 127

1MODULE_DESCRIPTION("HP laptop WMI hotkeys driver"); From that driver you posted. Seems like it might be something to do with media/extra function keys on your HP Laptop? – Michael Frank – 2019-12-05T08:38:33.650

Further Google Search results: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1806681

– Michael Frank – 2019-12-05T08:41:57.007

2Ultimately, if you aren't noticing any actual fault, it's probably nothing to worry about. Computers throw errors all the time, but they don't all need to be fixed. – Michael Frank – 2019-12-05T08:44:17.113

1In particular, Linux distros frequently include every driver under the sun by default, so that they can boot and use whatever hardware you have installed without requiring user interaction. Naturally, this leads to a lot of boot-time "errors" as all these drivers attempt to access hardware which isn't present. – Dave Sherohman – 2019-12-05T08:53:25.707

What is exactly WMI and why my Linux machine fails to use it?

Answers