I am having some issue with a USB connection to a Quectel RM520 modem. I have a USB3 connection between the modem and a Habanero module, the connection starts up fine, the modem comes online, I can start a WAN on the Habanero so my laptop comes online through the LAN to the Habanero module.
Openwrt version: 19.07.2
RM520 version: RM520NGLAAR01A06M4G
The problem starts when I run a speedtest. When running a speedtest I get two error in the log.
kern.warn kernel: xhci-hcd xhci-hcd.0.auto: ERROR unknown event type 37
The first error is printed in the log alot when the speedtest is running. I dont know if it is doing anything, or it can be ignored or it is associated with the second error.
[ 414.023909] usb 2-1: USB disconnect, device number 2 [ 414.024361] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0 [ 414.028359] option 2-1:1.0: device disconnected [ 414.037675] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1 [ 414.040238] qmi_wwan 2-1:1.4: nonzero urb status received: -71 [ 414.040249] qmi_wwan 2-1:1.4: wdm_int_callback - 0 bytes [ 414.040257] qmi_wwan 2-1:1.4: wdm_int_callback - usb_submit_urb failed with result -19 [ 414.060019] option 2-1:1.1: device disconnected [ 414.070577] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2 [ 414.072428] option 2-1:1.2: device disconnected [ 414.081844] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3 [ 414.084411] option 2-1:1.3: device disconnected
The second error is a lot more critical since it resets the USB connection to the modem. I have only seen it once and it looked like came when the speedtest reached around 200 Mbps.
I hope someone can help me fix this errors.
Dont hesitate to ask for more information.