Nix

Next time it occurs, I will do more testing and provide more feedback. Stay tuned

Sorry for beathing your air tkaiser. I sincerely apologise for doubting armbian.

This is second opi pc I own. First one is running arch linux (some image made by loboris), has two usb devices connected that never caused any problem working 24/7. So hope you understand why my primary suspicion for usb with second opi pc is armbian 5.05. Disconnecting issues started yesterday. It cannot be hardware related since it would happen sooner than one week in. When it occured yesterday, I tried all three usb ports and lsusb was empty on all three. Even one reboot did not help. Power cycle did help. Also cables are ok, since I have been using that same cable with laptop connected to arduino and as long as it was connected there were no issues.

Hi, Using orange pi pc with armbian 5.05 jessie server image. Everything worked fine for few days, until recently when usb device started disconnecting on its own: Mar 24 19:58:02 localhost mtp-probe: checking bus 7, device 90: "/sys/devices/platform/sunxi-ohci.3/usb7/7-1" Mar 24 19:58:02 localhost mtp-probe: bus: 7, device: 90 was not an MTP device Mar 24 19:58:03 localhost kernel: [ 592.325419] usb 7-1: USB disconnect, device number 90 Mar 24 19:58:03 localhost kernel: [ 592.332823] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0 Mar 24 19:58:03 localhost kernel: [ 592.339829] ch341 7-1:1.0: device disconnected Mar 24 19:58:03 localhost kernel: [ 592.680093] usb 7-1: new full-speed USB device number 91 using sunxi-ohci Mar 24 19:58:03 localhost kernel: [ 592.910999] ch341 7-1:1.0: ch341-uart converter detected Mar 24 19:58:03 localhost kernel: [ 592.949040] usb 7-1: ch341-uart converter now attached to ttyUSB0 Mar 24 19:58:03 localhost mtp-probe: checking bus 7, device 91: "/sys/devices/platform/sunxi-ohci.3/usb7/7-1" Mar 24 19:58:03 localhost mtp-probe: bus: 7, device: 91 was not an MTP device Mar 24 19:58:04 localhost kernel: [ 594.075309] usb 7-1: USB disconnect, device number 91 Mar 24 19:58:04 localhost kernel: [ 594.090754] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0 Mar 24 19:58:04 localhost kernel: [ 594.105513] ch341 7-1:1.0: device disconnected Mar 24 19:58:05 localhost kernel: [ 594.460116] usb 7-1: new full-speed USB device number 92 using sunxi-ohci Mar 24 19:58:05 localhost kernel: [ 594.690799] ch341 7-1:1.0: ch341-uart converter detected Mar 24 19:58:05 localhost kernel: [ 594.728941] usb 7-1: ch341-uart converter now attached to ttyUSB0 Mar 24 19:58:05 localhost mtp-probe: checking bus 7, device 92: "/sys/devices/platform/sunxi-ohci.3/usb7/7-1" Mar 24 19:58:05 localhost mtp-probe: bus: 7, device: 92 was not an MTP device Mar 24 19:58:06 localhost kernel: [ 595.912993] usb 7-1: USB disconnect, device number 92 Mar 24 19:58:06 localhost kernel: [ 595.928484] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0 Mar 24 19:58:06 localhost kernel: [ 595.943244] ch341 7-1:1.0: device disconnected Mar 24 19:58:11 localhost kernel: [ 600.710093] usb 7-1: new full-speed USB device number 94 using sunxi-ohci Mar 24 19:58:14 localhost kernel: [ 603.360110] usb 7-1: new full-speed USB device number 95 using sunxi-ohci Mar 24 19:58:16 localhost kernel: [ 605.840128] usb 7-1: new full-speed USB device number 96 using sunxi-ohci Mar 24 19:58:16 localhost kernel: [ 605.901337] ch341 7-1:1.0: ch341-uart converter detected Mar 24 19:58:16 localhost kernel: [ 605.938557] usb 7-1: ch341-uart converter now attached to ttyUSB0 Mar 24 19:58:16 localhost mtp-probe: checking bus 7, device 96: "/sys/devices/platform/sunxi-ohci.3/usb7/7-1" Mar 24 19:58:16 localhost mtp-probe: bus: 7, device: 96 was not an MTP device Mar 24 19:58:16 localhost kernel: [ 606.104080] usb 7-1: USB disconnect, device number 96 Mar 24 19:58:16 localhost kernel: [ 606.119031] ch341-uart ttyUSB0: ch341-uart converter now disconnected from ttyUSB0 Mar 24 19:58:16 localhost kernel: [ 606.133390] ch341 7-1:1.0: device disconnected Mar 24 19:58:17 localhost kernel: [ 606.480105] usb 7-1: new full-speed USB device number 97 using sunxi-ohci Mar 24 19:58:24 localhost kernel: [ 613.850122] usb 7-1: new full-speed USB device number 98 using sunxi-ohci Device in question is arduino 2560 mega board. I dont believe it has anything to do with power issues. And arduino board is functional. USB "recovers" only on reboot. Reconnecting device does not help, since after it "disconnects" lsusb is empty. I am using 2A power supply, and this arduino board is only device connected to it. Am planning to use opi one for it, but for now have extra opi pc at hand What can be done to fix this issue? Do you need any more information?