Displaying 4 results from an estimated 4 matches for "uhubctl".
2024 Sep 28
2
Weekend Puzzle: computer posing as an UPS
...h-linux
it seems not possible to programmatically truly power-cycle USB port/hub,
as 5V pins are "always on"; and per
https://stackoverflow.com/a/16316401/4715872 - at least not on MoBo ports
(some hubs may have invested into being fully up to spec and control power
fully). The referenced uhubctl <https://github.com/mvp/uhubctl> on my PC
said "No compatible devices detected!" so I guess that's it.
* Whatever I could find with (suggestions welcome) `grep -r . `find
/sys/devices/pci0000\:00 -name '*usb*port*'` /sys/bus/usb/devices/` did
not expose any differences...
2024 Sep 28
1
Weekend Puzzle: computer posing as an UPS
...possible to programmatically truly power-cycle USB port/hub,
> as 5V pins are "always on"; and per
> https://stackoverflow.com/a/16316401/4715872 - at least not on MoBo ports
> (some hubs may have invested into being fully up to spec and control power
> fully). The referenced uhubctl <https://github.com/mvp/uhubctl> on my PC
> said "No compatible devices detected!" so I guess that's it.
>
> * Whatever I could find with (suggestions welcome) `grep -r . `find
> /sys/devices/pci0000\:00 -name '*usb*port*'` /sys/bus/usb/devices/` did
> no...
2024 Sep 28
1
Weekend Puzzle: computer posing as an UPS
...grammatically truly power-cycle USB port/hub,
>> as 5V pins are "always on"; and per
>> https://stackoverflow.com/a/16316401/4715872 - at least not on MoBo ports
>> (some hubs may have invested into being fully up to spec and control power
>> fully). The referenced uhubctl <https://github.com/mvp/uhubctl> on my PC
>> said "No compatible devices detected!" so I guess that's it.
>>
>> * Whatever I could find with (suggestions welcome) `grep -r . `find
>> /sys/devices/pci0000\:00 -name '*usb*port*'` /sys/bus/usb/devic...
2024 Sep 27
1
Weekend Puzzle: computer posing as an UPS
FWIW, a few lessons learned:
* Different USB-A sized ports (even if marked USB-3.2) did not prove a
stable source, with Pi5 occasionally turning off or rebooting. Sort of
behaved well for days, but as soon as I added load like package installs or
NUT builds, it did not survive 5 minutes...
* Might be the MoBo turning off or cycling the port due to "overload"?..
* Tried the