I connect my Android phone to my PC via USB cable, and it seems like it stops charging after some time when I am away. After I come back and touch the mouse the charging resumes.
There is no sleep/hibernation, only screens turn off. Some time ago it was working fine, in the same port (also tried another port, and another cable). PopOS 21.04.
cat /sys/module/usbcore/parameters/autosuspend is -1 (added usbcore.autosuspend=-1 to boot params via kernelstub).
The PC is definitely not sleeping, there are journalctl logs during that time. journalctl · GitHub
This sounds to me as a feature where USB ports turns off after some time to ‘save power’.
Chceck BIOS for some power saving or USB specific configurations.
Does this happen for only a particular USB port? To get some clarification, is this on a desktop/laptop? what motherboard/manufacture? and does this only happen to phones in particular? i.e. camera batteries.
I would check to see in the BIOS if there is a powershare or Always on USB ports.
it seems like the issue is on the OS/software level. I did not touch anything in the BIOS settings for months, and several weeks ago it was working fine in the same USB port.
That is a ‘display off’ power saving state. It could be a S1 state, S3 is a standby state and S0 is a fully on state.
Perhaps the UEFI is detecting the GPU going to sleep so it turns USB power off.
