I have a Vontar box which I’ve easily installed linux on, it’s a S905X3
My question is a weird one,
I have an accessory controlled over serial connected via a microusb port.
I used to have an old s905x that worked well with it. now I’ve upgraded to the S905X3 and it doesn’t seem to recognize it anymore, nothing on dmesg, nothing on udev. funnily enough, connection the same cable to a laptop works (a /dev/ttyUSB device shows up) and also connecting another usb-uart converter tot the vontar box!
any leads as to how to figure out what’s going on here?
read here how to make logs: Looking for users with no working WiFi or BT
sure,
dmesg:
https://pastebin.com/raw/D1UeLYMk
could this be the problem?
[ 181.853747@3]- usb 1-1: new full-speed USB device number 3 using xhci-hcd
[ 181.973786@3]- usb 1-1: device descriptor read/64, error -71
[ 182.201846@3]- usb 1-1: Device not responding to setup address.
[ 182.409776@3]- usb 1-1: Device not responding to setup address.
[ 182.618039@3]- usb 1-1: device not accepting address 3, error -71
[ 183.629756@3]- usb 1-1: new full-speed USB device number 4 using xhci-hcd
[ 194.886030@3]- usb 1-1: new full-speed USB device number 5 using xhci-hcd
again, the USB device itself shows up on other machines and other USB devices work with this one
anything else you think is relevant?
lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 3.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 3
bMaxPacketSize0 9
idVendor 0x1d6b Linux Foundation
idProduct 0x0003 3.0 root hub
bcdDevice 4.09
iManufacturer 3 Linux 4.9.269 xhci-hcd
iProduct 2 xHCI Host Controller
iSerial 1 xhci-hcd.0.auto
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x001f
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
bMaxBurst 0
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 0x000f
bNumDeviceCaps 1
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabilityType 3
bmAttributes 0x02
Latency Tolerance Messages (LTM) Supported
wSpeedsSupported 0x0008
Device can operate at SuperSpeed (5Gbps)
bFunctionalitySupport 3
Lowest fully-functional device speed is SuperSpeed (5Gbps)
bU1DevExitLat 0 micro seconds
bU2DevExitLat 0 micro seconds
Hub Descriptor:
bLength 12
bDescriptorType 42
nNbrPorts 1
wHubCharacteristic 0x0009
Per-port power switching
Per-port overcurrent protection
bPwrOn2PwrGood 10 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
bHubDecLat 0.0 micro seconds
wHubDelay 0 nano seconds
DeviceRemovable 0x00
Hub Port Status:
Port 1: 0000.02a0 5Gbps power Rx.Detect
Device Status: 0x0001
Self Powered
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 9 Hub
bDeviceSubClass 0
bDeviceProtocol 1 Single TT
bMaxPacketSize0 64
idVendor 0x1d6b Linux Foundation
idProduct 0x0002 2.0 root hub
bcdDevice 4.09
iManufacturer 3 Linux 4.9.269 xhci-hcd
iProduct 2 xHCI Host Controller
iSerial 1 xhci-hcd.0.auto
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x0019
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xe0
Self Powered
Remote Wakeup
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 9 Hub
bInterfaceSubClass 0
bInterfaceProtocol 0 Full speed (or root) hub
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0004 1x 4 bytes
bInterval 12
Hub Descriptor:
bLength 9
bDescriptorType 41
nNbrPorts 2
wHubCharacteristic 0x0009
Per-port power switching
Per-port overcurrent protection
TT think time 8 FS bits
bPwrOn2PwrGood 10 * 2 milli seconds
bHubContrCurrent 0 milli Ampere
DeviceRemovable 0x00
PortPwrCtrlMask 0xff
Hub Port Status:
Port 1: 0000.0100 power
Port 2: 0000.0100 power
Device Status: 0x0003
Self Powered
Remote Wakeup Enabled
Couple of observations
Error 71
Leave device plugged in
And reboot?
Did you try all USB Ports on Box
USB/OTA port?
Log shows testing summer june 30 version
Do you have spare media
Try latest nightly 4.9.269
Or maybe NE 5.4 kernel
Happy Testing
OK so I’ve tried rebooting with the device in all ports, nothing.
tried the latest ng nightly, nothing - I also compared the dmesg and found no significant change (other then the compilation info)
how can I get 5.4? this is a s905x3 and what I’ve seen is that the 5.4 is only for x4
5.4 Does not support SM1, but you can try out Amlogic-no
My Bad on 5.4 kernel
Go to Android Developer Options
Turn off USB debug
And or change state if USB Config
From charging
To Data transfer protocol
Media Transfer protocol
On serial device
Move/change jumper from 5v to 3.3v
Or vise versa
Maybe will work 
amlogic-no bootloops with a purple screen and I haven’t yet soldered pins to the uart so I can’t provide better logs then that.
regarding developer options, you want me to try from the on board android 9?
the stock android doesn’t seem to recognize it too
Breakthrough! I bought a cheap USB hub which the box did see, after connecting it to the box and the usb-serial to it worked
KERNEL[2388.731177] add /devices/platform/ff500000.dwc3/xhci-hcd.0.auto/usb1/1-1 (usb)
KERNEL[2388.735268] add /devices/platform/ff500000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1:1.0 (usb)
UDEV [2388.740445] add /devices/platform/ff500000.dwc3/xhci-hcd.0.auto/usb1/1-1 (usb)
KERNEL[2388.761454] add /bus/usb/drivers/ch341 (drivers)
KERNEL[2388.761553] add /bus/usb-serial/drivers/ch341-uart (drivers)
KERNEL[2388.761905] add /devices/platform/ff500000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1:1.0/ttyUSB0 (usb-serial)
KERNEL[2388.763346] add /devices/platform/ff500000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1:1.0/ttyUSB0/tty/ttyUSB0 (tty)
KERNEL[2388.763451] add /module/ch341 (module)
UDEV [2388.763723] add /devices/platform/ff500000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1:1.0 (usb)
UDEV [2388.767844] add /module/ch341 (module)
UDEV [2388.768166] add /bus/usb-serial/drivers/ch341-uart (drivers)
UDEV [2388.769628] add /devices/platform/ff500000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1:1.0/ttyUSB0 (usb-serial)
UDEV [2388.770902] add /bus/usb/drivers/ch341 (drivers)
UDEV [2388.777176] add /devices/platform/ff500000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1:1.0/ttyUSB0/tty/ttyUSB0 (tty)
thanks alot to all those that helped!
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