Dear Linux folks,
As a follow-up to *Linux warning `usb: port power management may be
unreliable` on Dell XPS 13 9360* [1][2], Linux warns about this on Dell
laptops, desktops, and servers, and also on devices from other
manufacturers [3].
I created issue with corresponding Linux messages and output of acpidump
attached for more devices I have access to:
1. Linux warning `usb: port power management may be unreliable` on Dell
OptiPlex 3620
https://bugzilla.kernel.org/show_bug.cgi?id=218486
2. Linux warning `usb: port power management may be unreliable` on Dell
OptiPlex 5055
https://bugzilla.kernel.org/show_bug.cgi?id=218487
3. Linux warning `usb: port power management may be unreliable` on
OptiPlex Small Form Factor Plus 7010
https://bugzilla.kernel.org/show_bug.cgi?id=218488
4. Linux warning `usb: port power management may be unreliable` on Dell
PowerEdge T440
https://bugzilla.kernel.org/show_bug.cgi?id=218490
(Artem (Cc:) marked them all as duplicates, and I asked him privately to
undo this until the maintainers ask me to.)
Mathias was so kind to analyze the ACPI tables [2].
Is this a firmware issue or a Linux one? As a user I am unsure what to
do, and ignoring warnings sounds wrong to me.
Kind regards,
Paul
[1]:
https://lore.kernel.org/linux-usb/210f8e5d-aa78-41f7-a9ce-2584274f1848@xxxxxxxxxxxxx/T/#t
[2]: https://bugzilla.kernel.org/show_bug.cgi?id=218465
"Linux warning `usb: port power management may be unreliable` on
Dell XPS 13 9360"
[3]: https://github.com/linuxhw/Dmesg
PS: First 100 hits in the Linux messages git archive [3]:
```
linux-hardware-dmesg (main)$ git grep "ay be unreliable" | head -100
All In
One/AIO/H87/H87H3-TI/C951D8E52EFC/LINUXMINT-20.2/5.4.0-100-GENERIC/X86_64/40CE8C87CB:[
0.650585] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 22
V222UA/9F8A84B648C2/ENDLESS-3.4.1/4.15.0-22-GENERIC/X86_64/E0EF808E3F:[
0.550937] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FA_A6521FA/262E2C088492/RED-OS-7.3.2/5.15.72-1.EL7.3.X86_64/X86_64/24ED481783:[
0.522930] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FA_V241FA/226F591F8280/ENDLESS-3.8.6/5.4.0-42-GENERIC/X86_64/0EA91E4E6B:[
0.863317] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FA_V241FA/226F591F8280/ENDLESS-3.9.1/5.8.0-14-GENERIC/X86_64/9A5F760EC7:[
1.375329] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FA_V241FA/2332A3C0017B/ENDLESS-3.7.8/5.3.0-28-GENERIC/X86_64/74D86F694A:[
0.833766] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FA_V241FA/3602C27EA430/ENDLESS-3.8.4/5.4.0-19-GENERIC/X86_64/2AF0AF630C:[
0.865505] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FA_V241FA/3602C27EA430/ENDLESS-3.8.6/5.4.0-42-GENERIC/X86_64/653FDB0EE6:[
0.869166] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FA_V241FA/3602C27EA430/ENDLESS-3.9.4/5.8.0-14-GENERIC/X86_64/AB5720591E:[
1.344398] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FA_V241FA/3602C27EA430/ENDLESS-3.9.6/5.8.0-14-GENERIC/X86_64/60C6C7EA7C:[
1.341951] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FF_A6521FF/856843130D4D/ENDLESS-3.9.5/5.8.0-14-GENERIC/X86_64/52140CEEC0:[
1.353997] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FF_A6521FF/856843130D4D/ENDLESS-3.9.5/5.8.0-14-GENERIC/X86_64/702C97C47B:[
1.353997] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FF_V241FF/7000C1D5524B/ENDLESS-3.9.3/5.8.0-14-GENERIC/X86_64/72FCC11E52:[
1.264174] usb: port power management may be unreliable
All In One/ASUSTek Computer/Vivo/Vivo AIO 24
V241FF_V241FF/B16A1F0445CB/ENDLESS-3.9.4/5.8.0-14-GENERIC/X86_64/A9A286F67B:[
1.347540] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/2C64F2D7482B/ENDLESS-3.3.16-NEXTHW1/4.15.0-12-GENERIC/X86_64/5070ED2282:[
0.665420] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/2C64F2D7482B/ENDLESS-3.3.16-NEXTHW1/4.15.0-12-GENERIC/X86_64/80FF2C9A96:[
0.665420] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/2C64F2D7482B/ENDLESS-3.3.19-NEXTHW1/4.15.0-15-GENERIC/X86_64/191C1A1A94:[
0.664096] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/2C64F2D7482B/ENDLESS-3.3.19-NEXTHW1/4.15.0-15-GENERIC/X86_64/949FF85DC9:[
0.635980] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/2C64F2D7482B/ENDLESS-3.3.19-NEXTHW1/4.15.0-15-GENERIC/X86_64/D633DC9722:[
0.635980] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/2C64F2D7482B/ENDLESS-3.5.1/4.18.0-10-GENERIC/X86_64/B9D07EAAFE:[
0.711346] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/72345B40DF12/OPENMANDRIVA-4.3/5.16.13-DESKTOP-1OMV4003/X86_64/2E0A195007:[
1.915921] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/72345B40DF12/UBUNTU-20.04/5.8.0-53-GENERIC/X86_64/0EF1F4F50D:[
0.887317] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/72345B40DF12/UBUNTU-20.04/5.8.0-53-GENERIC/X86_64/FDC38A2185:[
0.910744] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/76051F2C7080/KDE-NEON-20.04/5.13.0-35-GENERIC/X86_64/D3DB12130F:[
0.927905] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/89FE20662EF5/ENDLESS-3.7.7/5.3.0-28-GENERIC/X86_64/8434301194:[
0.956868] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/A87B47004B14/ENDLESS-3.3.16-NEXTHW1/4.15.0-12-GENERIC/X86_64/C861864ED7:[
0.664109] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/CAE70310F314/ENDLESS-3.9.4/5.8.0-14-GENERIC/X86_64/66808639C4:[
1.510309] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/CAE70310F314/ENDLESS-3.9.5/5.8.0-14-GENERIC/X86_64/207D9F3DF9:[
1.523026] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/CAE70310F314/ENDLESS-3.9.5/5.8.0-14-GENERIC/X86_64/2CC529923F:[
1.506792] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/CAE70310F314/ENDLESS-3.9.5/5.8.0-14-GENERIC/X86_64/70014EA10E:[
1.559157] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-865/CAE70310F314/UBUNTU/5.8.0-14-GENERIC/X86_64/E51EF67C3C:[
1.509910] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-963/AB390A2C3656/ENDLESS-3.9.5/5.8.0-14-GENERIC/X86_64/30F1B16098:[
1.109351] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C22-963/AB390A2C3656/ENDLESS-3.9.5/5.8.0-14-GENERIC/X86_64/9AC8D3D065:[
1.109351] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-420/1D8955841971/ENDLESS-3.9.7/5.8.0-14-GENERIC/X86_64/04C483EE9B:[
2.836153] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-860/422CCDC0D82D/OPENMANDRIVA-23.01/6.1.1-DESKTOP-1OMV2290/X86_64/AB25618998:[
2.517040] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-860/521E90F01878/ENDLESS-3.9.3/5.8.0-14-GENERIC/X86_64/EE48661CED:[
1.771622] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/186914CED252/KUBUNTU-19.10/5.3.0-29-GENERIC/X86_64/4EC6B3F5DC:[
0.619494] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/186914CED252/KUBUNTU-19.10/5.3.0-29-GENERIC/X86_64/660EA9C3A5:[
0.619494] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/186914CED252/KUBUNTU-20.04/5.4.0-45-GENERIC/X86_64/68D89317DC:[
0.693613] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/186914CED252/KUBUNTU-20.04/5.4.0-45-GENERIC/X86_64/B10A4E5810:[
0.693613] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/21BB50F83EA2/FEDORA-34/5.11.15-300.FC34.X86_64/X86_64/EB23862DED:[
0.729864] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/42C297513CDB/UBUNTU-19.04/5.0.0-16-GENERIC/X86_64/2288828F06:[
0.919194] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/AD00670C5A58/ROSA-12.2/5.10.74-GENERIC-2ROSA2021.1-X86_64/X86_64/873C58A401:[
2.316468] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/AD00670C5A58/ROSA-12.2/5.10.74-GENERIC-2ROSA2021.1-X86_64/X86_64/961F1373A2:[
2.336592] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/AD00670C5A58/ROSA-12.2/5.10.74-GENERIC-2ROSA2021.1-X86_64/X86_64/E61762236D:[
2.361173] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-865/C6582B079E94/OPENMANDRIVA-4.2/5.10.14-DESKTOP-1OMV4002/X86_64/6DC98B8074:[
1.787340] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-963/77A9AFE95967/ENDLESS-3.7.6/5.3.0-23-GENERIC/X86_64/D8FFD8A934:[
0.823592] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-963/CC4A926A8703/ROSA-12/5.10.71-GENERIC-1ROSA2021.1-X86_64/X86_64/9B4659E4DD:[
2.473583] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-963/CC4A926A8703/ROSA-R12/5.10.56-GENERIC-1ROSA2021.1-X86_64/X86_64/01D4780C32:[
2.450866] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-963/CC4A926A8703/ROSA-R12/5.10.70-GENERIC-2ROSA2021.1-X86_64/X86_64/215146C423:[
2.455238] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-963/CCB33D17B7C6/ZORIN-16/5.15.0-53-GENERIC/X86_64/4F517E816D:[
1.017371] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-963/CCB33D17B7C6/ZORIN-16/5.15.0-56-GENERIC/X86_64/AB421FD2D4:[
0.625572] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C24-963/E4A4E93BCF0A/RED-OS-7.3/5.15.87-1.EL7.3.X86_64/X86_64/7B4EEEBDBC:[
0.724577] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-1655/38F1D8798E6E/RED-OS-7.3.2/5.15.87-1.EL7.3.X86_64/X86_64/4FE6CA7F88:[
0.751172] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-1655/AA5A69D17335/ALT-8.4/5.10.110-STD-DEF-ALT0.C9F.2/X86_64/96E5D68181:[
0.947771] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-1655/F58A44B9C206/UBUNTUSTUDIO-20.04/5.13.0-40-LOWLATENCY/X86_64/AFF1557D72:[
0.741138] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-1655/F58A44B9C206/UBUNTUSTUDIO-20.04/5.17.1-051701-GENERIC/X86_64/A87F9DE14E:[
0.799120] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/0BC43D485BC1/ENDLESS-3.8.7/5.4.0-42-GENERIC/X86_64/087592F760:[
1.824861] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/0BC43D485BC1/ENDLESS-3.8.7/5.4.0-42-GENERIC/X86_64/0FD8D844C5:[
1.834120] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/0BC43D485BC1/ENDLESS-3.8.7/5.4.0-42-GENERIC/X86_64/AB58D02A20:[
1.821996] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/0BC43D485BC1/ENDLESS-3.8.7/5.4.0-42-GENERIC/X86_64/CC29336BB3:[
1.824861] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/0D6785EE4B93/OPENMANDRIVA-23.01/6.1.1-DESKTOP-1OMV2290/X86_64/D801E40F8C:[
1.758023] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/405BF25F53D1/KUBUNTU-20.04/5.4.0-47-GENERIC/X86_64/679E8852DF:[
0.854000] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/563F493FD77F/OPENMANDRIVA-23.03/6.2.6-DESKTOP-1OMV2390/X86_64/A82A90955E:[
1.415729] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/563F493FD77F/OPENMANDRIVA-4.90/5.18.12-DESKTOP-3OMV4090/X86_64/F8A944DF6F:[
1.441382] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/93EEE25E2034/ENDLESS-3.8.6/5.4.0-42-GENERIC/X86_64/BF2053E277:[
1.560914] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/93EEE25E2034/ENDLESS-3.9.0/5.8.0-14-GENERIC/X86_64/B886538A18:[
1.895375] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/93EEE25E2034/ENDLESS-3.9.3/5.8.0-14-GENERIC/X86_64/17E53BFE31:[
1.910578] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/93EEE25E2034/ENDLESS-3.9.3/5.8.0-14-GENERIC/X86_64/5820A2D4C3:[
1.899581] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/A23104408196/LINUXMINT-20.3/5.4.0-92-GENERIC/X86_64/F15CA34264:[
1.090331] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
C27-962/AAB4DC68AC2E/ENDEAVOUROS-ROLLING/5.13.4-ARCH2-1/X86_64/75E1D7295C:[
1.095398] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
S24-880/00A232C06A58/OPENMANDRIVA-4.50/5.19.12-DESKTOP-2OMV4090/X86_64/A255155F98:[
1.709588] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
V3-772G/D65C7FD04328/ARCH-ROLLING/5.9.4-ARCH1-1/X86_64/63B708B27B:[
3.102833] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
Z1-622/12DC70B153E8/ROSA-2016.1/4.9.60-NRJ-DESKTOP-1ROSA-X86_64/X86_64/350CC83AC7:[
6.340598] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
Z1-751/6ED6D0CF15D0/UBUNTU-20.04/5.8.0-48-GENERIC/X86_64/088EE04D43:[
1.603326] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
Z1-751/6ED6D0CF15D0/UBUNTU-20.04/5.8.0-50-GENERIC/X86_64/6CCA1F0784:[
1.602219] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
Z24-890/BC3051D49BF1/UBUNTU-16.04/4.4.0-177-GENERIC/X86_64/C1339E884A:[
0.846488] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
Z3-600/BD66BD02AA7B/OPENMANDRIVA-23.03/6.2.6-DESKTOP-1OMV2390/X86_64/A2921975CD:[
5.353925] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
Z3-600/C4DD4E20E239/UBUNTU-18.04/5.0.0-37-GENERIC/X86_64/95465E168F:[
1.739941] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
Z3-705/160DDCD6E651/ROSA-2014.1/4.1.25-NRJ-DESKTOP-1ROSA-X86_64/X86_64/E7395D0EE2:[
1.422223] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
ZC-606/4574857FD00B/UBUNTU-20.04/5.11.0-40-GENERIC/X86_64/2972DF8D64:[
1.854473] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
ZC-606/F618C756E258/ROSA-2016.1/4.9.60-NRJ-DESKTOP-1ROSA-X86_64/X86_64/7048174273:[
4.917425] usb: port power management may be unreliable
All In One/Acer/Aspire/Aspire
ZC-606/F618C756E258/ROSA-2016.1/4.9.76-NRJ-DESKTOP-1ROSA-X86_64/X86_64/90FF435FAD:[
4.069505] usb: port power management may be unreliable
All In One/Acer/Veriton/Veriton
Z4810G/E8AB5315A5E7/UBUNTU-20.04/5.15.0-43-GENERIC/X86_64/D85C47C623:[
0.701649] usb: port power management may be unreliable
All In One/Acer/Veriton/Veriton
Z4810G/E8AB5315A5E7/UBUNTU-22.04/5.19.0-38-GENERIC/X86_64/C4A9881345:[
1.198923] usb: port power management may be unreliable
All In
One/Acidanthera/iMac16/iMac16,1/594881FEE753/OPENMANDRIVA-4.50/5.19.5-DESKTOP-1OMV4090/X86_64/0E9B82F312:[
3.930212] usb: port power management may be unreliable
All In
One/Acidanthera/iMac18/iMac18,3/5F24E52E7730/LINUXMINT-21.1/5.15.0-58-GENERIC/X86_64/70BD257F2C:[
1.259378] usb: port power management may be unreliable
All In
One/Acidanthera/iMac18/iMac18,3/5F24E52E7730/LINUXMINT-21/5.15.0-56-GENERIC/X86_64/405443FC24:[
1.273375] usb: port power management may be unreliable
All In
One/Acidanthera/iMac18/iMac18,3/5F24E52E7730/LINUXMINT-21/5.15.0-56-GENERIC/X86_64/AEFCE63130:[
1.308855] usb: port power management may be unreliable
All In
One/Acidanthera/iMac20/iMac20,1/1EB5BA2AB9E0/ELEMENTARY-6.1/5.15.0-56-GENERIC/X86_64/4EFE19137D:[
0.742582] usb: port power management may be unreliable
All In
One/Acidanthera/iMacPro1/iMacPro1,1/2499D9B10F2B/NOBARA-37/6.2.6-201.FSYNC.FC37.X86_64/X86_64/EBA8868F8B:[
1.095741] usb: port power management may be unreliable
All In
One/Acidanthera/iMacPro1/iMacPro1,1/9A30E1010885/ARCH/5.9.10-ARCH1-1/X86_64/42B182D5F0:[
3.612607] usb: port power management may be unreliable
All In
One/Acidanthera/iMacPro1/iMacPro1,1/BF28891431B4/UBUNTU-20.04/5.4.0-37-GENERIC/X86_64/FC4BF98DC2:[
0.288941] usb: port power management may be unreliable
All In
One/Acidanthera/iMacPro1/iMacPro1,1/CCEF88A1D848/UBUNTU-22.04/5.19.0-32-GENERIC/X86_64/13A42307A4:[
1.950960] usb: port power management may be unreliable
All In
One/Apple/iMac16/iMac16,1/36F3548CFB1A/ROSA-2016.1/4.9.41-NRJ-DESKTOP-1ROSA-X86_64/X86_64/A90AA5D34B:[
2.869734] usb: port power management may be unreliable
All In
One/Apple/iMac16/iMac16,1/4BCFE045F418/POP!_OS-21.04/5.13.0-7620-GENERIC/X86_64/6514199D0C:[
1.080389] usb: port power management may be unreliable
All In
One/Apple/iMac16/iMac16,1/8D6EBF97728F/ROSA-2016.1/4.15.0-DESKTOP-47.2ROSA-X86_64/X86_64/906BCD4AC8:[
1.526534] usb: port power management may be unreliable
All In
One/Apple/iMac16/iMac16,1/B46A60C60F7F/OPENMANDRIVA-4.50/5.12.4-DESKTOP-1OMV4050/X86_64/F800A67D4D:[
2.784742] usb: port power management may be unreliable
All In
One/Apple/iMac16/iMac16,1/E5DA8CE02497/LINUXMINT-20.2/5.4.0-89-GENERIC/X86_64/14FA707392:[
0.844179] usb: port power management may be unreliable
All In
One/Apple/iMac16/iMac16,1/E5DA8CE02497/LINUXMINT-20.2/5.4.0-89-GENERIC/X86_64/9FE896D123:[
0.844179] usb: port power management may be unreliable
```
