[FS#160] usb-serial with screen not working on dlink dir860l

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Russell Senior (russell) 

Attached to Project - LEDE Project
Summary - usb-serial with screen not working on dlink dir860l
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - 
git describe
reboot-1497-ga810e77


with diffconfig:


CONFIG_TARGET_ramips=y
CONFIG_TARGET_ramips_mt7621=y
CONFIG_TARGET_ramips_mt7621_DEVICE_dir-860l-b1=y
CONFIG_DEVEL=y
CONFIG_BUILD_LOG=y
CONFIG_PACKAGE_ip=y
CONFIG_PACKAGE_kmod-usb-core=y
CONFIG_PACKAGE_kmod-usb-ohci=y
CONFIG_PACKAGE_kmod-usb-ohci-pci=y
CONFIG_PACKAGE_kmod-usb-serial=y
CONFIG_PACKAGE_kmod-usb-serial-ftdi=y
CONFIG_PACKAGE_kmod-usb-serial-pl2303=y
CONFIG_PACKAGE_kmod-usb2=y
CONFIG_PACKAGE_kmod-usb2-pci=y
CONFIG_PACKAGE_kmod-usb3=y
CONFIG_PACKAGE_screen=y


screen starts, but doesn't work.  The usb-relevant dmesg's are:


[    4.550000] usbcore: registered new interface driver usbfs
[    4.560000] usbcore: registered new interface driver hub
[    4.570000] usbcore: registered new device driver usb
[    4.580000] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[    4.620000] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    4.670000] xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned bus number 1
[    4.720000] hub 1-0:1.0: USB hub found
[    4.740000] xhci-mtk 1e1c0000.xhci: new USB bus registered, assigned bus number 2
[    4.760000] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[    4.770000] hub 2-0:1.0: USB hub found
[    5.260000] usb 1-1: new full-speed USB device number 2 using xhci-mtk
[    5.410000] usb 1-1: no of_node; not parsing pinctrl DT
[   10.150000] usbcore: registered new interface driver usbserial
[   10.160000] usbcore: registered new interface driver usbserial_generic
[   10.180000] usbserial: USB Serial support registered for generic
[   10.220000] usbcore: registered new interface driver ftdi_sio
[   10.240000] usbserial: USB Serial support registered for FTDI USB Serial Device
[   10.260000] usbcore: registered new interface driver pl2303
[   10.270000] usbserial: USB Serial support registered for pl2303
[   10.290000] pl2303 ttyUSB0: no of_node; not parsing pinctrl DT
[   10.290000] usb 1-1: pl2303 converter now attached to ttyUSB0
[  871.510000] pl2303 ttyUSB0: pl2303_get_line_request - failed: -145
[  871.620000] pl2303 ttyUSB0: pl2303_set_line_request - failed: -145
[  871.840000] pl2303 ttyUSB0: pl2303_set_control_lines - failed: -145


Screen also throws an error (which gets blanked out, but is captured by the serial console):


# screen /dev/ttyUSB0 115200
/dev/null/utmp: Not a directory


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=160