I am also seeing this on a the AMD Ryzen desktop system Dell OptiPlex
5055 with Linux 5.13-rc7.

    [    0.000000] DMI: Dell Inc. OptiPlex 5055 Ryzen CPU/0P03DX, BIOS 1.1.25 
05/03/2021
    […]
    [   12.810715] wmi_bus wmi_bus-PNP0C14:00: WQBC data block query control 
method not found
    [   12.820176] acpi PNP0C14:01: duplicate WMI GUID 
05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00)

Alex, to summarize, this is a firmware bug, so needs to be reported to
Dell?

Is there any way to check, what features do not work? Then it’d be
easier to verify that and talk to the Dell support.

Lastly, the Dell Linux maintainers could be contacted too.

    DELL SMBIOS WMI DRIVER
    L:      dell.client.ker...@dell.com
    L:      platform-driver-...@vger.kernel.org
    S:      Maintained
    F:      drivers/platform/x86/dell/dell-smbios-wmi.c
    F:      tools/wmi/dell-smbios-example.c

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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
  #

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