The warning is generated by this kernel patch. https://patchwork.kernel.org/patch/10057993/
"Some BIOS implementations route ACPI codes other than 0x83 [in this case 0x86] to INT3400 [thermal] device. Ignore these ACPI notification codes because the INT3400 driver does not handle them." Also affects Lenovo Tablet 20L4 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1786906 Title: "ACPI unsupported" Status in linux package in Ubuntu: Expired Bug description: While I'm using Ubuntu Server version on my laptop(HP omen 15, CPU:i5-8300H,GPU:GTX1050Ti), it always says "[ time.time] acpi INT3400:00: Unsupported event [0x86]", In Ubuntu Desktop version, after I turn on my computer, it'll not going on but stay at a screen and says "[ time.time] acpi INT3400:00: Unsupported event [0x86]" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1786906/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
