These ACPI warnings are harmless most of time, but that also depends on what ACPI BIOS does on your systems. ===================================== [ 0.659825] wmi_bus wmi_bus-PNP0C14:00: WQBC data block query control method not found
WQBC is required according to WMI spec and implementation on this system but this is missing. This can cause some OEM features from working; however, many OEM WMI features (like hotkeys) aren't implemented on Linux in the first place. ===================================== [ 0.659921] ACPI Warning: SystemIO range 0x0000000000001828-0x000000000000182F conflicts with OpRegion 0x0000000000001800-0x000000000000183F (\_SB.PCI0.EHC2.E1PM) (20190816/utaddress-204) [ 0.661768] ACPI Warning: SystemIO range 0x0000000000001828-0x000000000000182F conflicts with OpRegion 0x0000000000001800-0x000000000000183F (\_SB.PCI0.EHC1.E1PM) (20190816/utaddress-204) [ 0.663121] ACPI Warning: SystemIO range 0x0000000000001828-0x000000000000182F conflicts with OpRegion 0x0000000000001800-0x000000000000187F (\PMIO) (20190816/utaddress-204) [ 0.664516] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver These complains that ACPI BIOS wants to access hardware registers, and OS never likes BIOS to access without going through device drivers. Without BIOS's ACPI code (sudo acpidump > acpi.log), it is not possible to do further analysis; however, it may be the same or similar to https://wiki.freebsd.org/Laptops/Dell_Latitude_E7240_i5-4310U. If this is the case, it is for USB2 power management. Unless you have USB 2 problems you don't need to worry about them either. -- 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/1890467 Title: wmi_bus wmi_bus-PNP0C14:00: WQBC data block query control method not found Status in linux package in Ubuntu: Confirmed Bug description: I run the kernel 5.4.0-42-generic on a fully up-to-date Ubuntu "focal" on Dell Latitude E6440. While scrolling through the output of `journalctl -b` I came across a warning (marked yellow): [ 0.659825] wmi_bus wmi_bus-PNP0C14:00: WQBC data block query control method not found Now, since this is a warning, I get, ergo, warned. What is it that I get warned about? Is it just a printf or is some action required? As every computer, the laptop suffers from various problems from time to time (e.g., boot or wakeup silently hangs up while the manufacturer splash screen is displayed), so, I don't know whether this message could be related to any of such problems. Here is the context of this warning in dmesg: # dmesg | grep -B 10 -A 5 "method not found" [ 0.518379] rtc_cmos 00:02: setting system clock to 2020-08-05T15:23:54 UTC (1596641034) [ 0.519455] Freeing unused decrypted memory: 2040K [ 0.520119] Freeing unused kernel image memory: 2712K [ 0.531430] Write protecting the kernel read-only data: 22528k [ 0.532242] Freeing unused kernel image memory: 2008K [ 0.532805] Freeing unused kernel image memory: 1192K [ 0.540186] x86/mm: Checked W+X mappings: passed, no W+X pages found. [ 0.540514] x86/mm: Checking user space page tables [ 0.547468] x86/mm: Checked W+X mappings: passed, no W+X pages found. [ 0.547786] Run /init as init process [ 0.659825] wmi_bus wmi_bus-PNP0C14:00: WQBC data block query control method not found [ 0.659921] ACPI Warning: SystemIO range 0x0000000000001828-0x000000000000182F conflicts with OpRegion 0x0000000000001800-0x000000000000183F (\_SB.PCI0.EHC2.E1PM) (20190816/utaddress-204) [ 0.661768] ACPI Warning: SystemIO range 0x0000000000001828-0x000000000000182F conflicts with OpRegion 0x0000000000001800-0x000000000000183F (\_SB.PCI0.EHC1.E1PM) (20190816/utaddress-204) [ 0.663121] ACPI Warning: SystemIO range 0x0000000000001828-0x000000000000182F conflicts with OpRegion 0x0000000000001800-0x000000000000187F (\PMIO) (20190816/utaddress-204) [ 0.664516] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver [ 0.666167] e1000e: Intel(R) PRO/1000 Network Driver - 3.2.6-k Some more info: # ls -la /sys/devices/platform/PNP0C14:00 drwxr-xr-x 4 root root 0 Aug 5 17:23 . drwxr-xr-x 29 root root 0 Aug 5 17:23 .. lrwxrwxrwx 1 root root 0 Aug 5 17:23 driver -> ../../../bus/platform/drivers/acpi-wmi -rw-r--r-- 1 root root 4096 Aug 5 18:09 driver_override lrwxrwxrwx 1 root root 0 Aug 5 18:09 firmware_node -> ../../LNXSYSTM:00/LNXSYBUS:00/PNP0C14:00 -r--r--r-- 1 root root 4096 Aug 5 18:09 modalias drwxr-xr-x 2 root root 0 Aug 5 18:09 power lrwxrwxrwx 1 root root 0 Aug 5 17:23 subsystem -> ../../../bus/platform -rw-r--r-- 1 root root 4096 Aug 5 17:23 uevent drwxr-xr-x 3 root root 0 Aug 5 17:23 wmi_bus # To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1890467/+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
