[Bug 218487] New: Linux warning `usb: port power management may be unreliable` on Dell OptiPlex 5055

[Bug 218487] New: Linux warning `usb: port power management may be unreliable` on Dell OptiPlex 5055

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=218487

            Bug ID: 218487
           Summary: Linux warning `usb: port power management may be
                    unreliable` on Dell OptiPlex 5055
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P3
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: pmenzel+bugzilla.kernel.org@molgen.mpg.de
        Regression: No

Created attachment 305861
  --> https://bugzilla.kernel.org/attachment.cgi?id=305861&action=edit
Linux 6.6.12 messages (output of `dmesg`) with system firmware 1.1.50

On the Dell OptiPlex 5055 with at least system firmware version 1.1.50, Linux
6.6.12 warns:

    $ dmesg | grep "be unreliable"
    [    3.289270] usb: port power management may be unreliable
    $ dmesg | grep -e "DMI:" -e "Linux version" -e microcode
    [    0.000000] Linux version 6.6.12.mx64.461
(root@theinternet.molgen.mpg.de) (gcc (GCC) 12.3.0, GNU ld (GNU Binutils) 2.41)
#1 SMP PREEMPT_DYNAMIC Thu Jan 18 10:47:08 CET 2024
    [    0.000000] DMI: Dell Inc. OptiPlex 5055 Ryzen CPU/0P03DX, BIOS 1.1.50
07/28/2021
    [    3.488086] microcode: CPU0: patch_level=0x08001137
    [    3.488088] microcode: CPU2: patch_level=0x08001137
    [    3.488088] microcode: CPU3: patch_level=0x08001137
    [    3.488091] microcode: CPU1: patch_level=0x08001137
    [    3.488094] microcode: CPU6: patch_level=0x08001137
    [    3.488094] microcode: CPU5: patch_level=0x08001137
    [    3.488095] microcode: CPU7: patch_level=0x08001137
    [    3.530149] microcode: CPU4: patch_level=0x08001137
    [    3.530171] microcode: Microcode Update Driver: v2.2.
    $ usb-devices

    T:  Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh=10
    D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
    P:  Vendor=1d6b ProdID=0002 Rev=06.06
    S:  Manufacturer=Linux 6.6.12.mx64.461 xhci-hcd
    S:  Product=xHCI Host Controller
    S:  SerialNumber=0000:01:00.0
    C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

    T:  Bus=01 Lev=01 Prnt=01 Port=09 Cnt=01 Dev#=  3 Spd=1.5 MxCh= 0
    D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
    P:  Vendor=413c ProdID=2113 Rev=01.08
    S:  Product=Dell KB216 Wired Keyboard
    C:  #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=100mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=01 Driver=usbhid
    I:  If#=0x1 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=00 Prot=00 Driver=usbhid

    T:  Bus=01 Lev=01 Prnt=01 Port=06 Cnt=02 Dev#=  2 Spd=1.5 MxCh= 0
    D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
    P:  Vendor=046d ProdID=c077 Rev=72.00
    S:  Manufacturer=Logitech
    S:  Product=USB Optical Mouse
    C:  #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=01 Prot=02 Driver=usbhid

    T:  Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=10000 MxCh= 4
    D:  Ver= 3.10 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
    P:  Vendor=1d6b ProdID=0003 Rev=06.06
    S:  Manufacturer=Linux 6.6.12.mx64.461 xhci-hcd
    S:  Product=xHCI Host Controller
    S:  SerialNumber=0000:01:00.0
    C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

    T:  Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=480 MxCh= 4
    D:  Ver= 2.00 Cls=09(hub  ) Sub=00 Prot=01 MxPS=64 #Cfgs=  1
    P:  Vendor=1d6b ProdID=0002 Rev=06.06
    S:  Manufacturer=Linux 6.6.12.mx64.461 xhci-hcd
    S:  Product=xHCI Host Controller
    S:  SerialNumber=0000:05:00.3
    C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

    T:  Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#=  1 Spd=5000 MxCh= 4
    D:  Ver= 3.00 Cls=09(hub  ) Sub=00 Prot=03 MxPS= 9 #Cfgs=  1
    P:  Vendor=1d6b ProdID=0003 Rev=06.06
    S:  Manufacturer=Linux 6.6.12.mx64.461 xhci-hcd
    S:  Product=xHCI Host Controller
    S:  SerialNumber=0000:05:00.3
    C:  #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA
    I:  If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub  ) Sub=00 Prot=00 Driver=hub

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[Bug 218487] Linux warning `usb: port power management may be unreliable` on Dell OptiPlex 5055

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=218487

Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pmenzel+bugzilla.kernel.org
                   |                            |@molgen.mpg.de

--- Comment #1 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Created attachment 305862
  --> https://bugzilla.kernel.org/attachment.cgi?id=305862&action=edit
Output of `acpidump` with system firmware 1.1.50

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[Bug 218487] Linux warning `usb: port power management may be unreliable` on Dell OptiPlex 5055

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=218487

Artem S. Tashkinov (aros@gmx.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #2 from Artem S. Tashkinov (aros@gmx.com) ---


*** This bug has been marked as a duplicate of bug 218490 ***

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[Bug 218487] Linux warning `usb: port power management may be unreliable` on Dell OptiPlex 5055

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=218487

--- Comment #3 from Paul Menzel (pmenzel+bugzilla.kernel.org@molgen.mpg.de) ---
Created attachment 305907
  --> https://bugzilla.kernel.org/attachment.cgi?id=305907&action=edit
Linux 6.8-rc6+ messages with v2 patches (output of `dmesg`) with
`usbcore.dyndbg=+p` and with system firmware 1.1.20

I tested this on a different system but the same model with a slightly older
firmware version OptiPlex 5055 Ryzen CPU/0P03DX, BIOS 1.1.20 05/31/2019. The
warning is gone.

The two patches were applied on top of tag *v6.8-rc6*.

1. 
https://lore.kernel.org/all/20240220135946.4028553-1-mathias.nyman@linux.intel.com/
2. 
https://lore.kernel.org/all/20240220135946.4028553-2-mathias.nyman@linux.intel.com/

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