FTDI USB Serial Device converter disconnects
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Incomplete
|
Undecided
|
Unassigned | ||
linux-source-2.6.20 (Ubuntu) |
Won't Fix
|
Medium
|
Unassigned |
Bug Description
I've just bought an FTDI based USB Serial converter (ID 0403:6001 Future Technology Devices International, Ltd 8-bit FIFO).
Messages from dmesg at the time when the device is connected:
[20462.016000] usb 2-1: new full speed USB device using uhci_hcd and address 11
[20462.268000] usb 2-1: configuration #1 chosen from 1 choice
[20462.268000] ftdi_sio 2-1:1.0: FTDI USB Serial Device converter detected
[20462.268000] drivers/
[20462.268000] usb 2-1: FTDI USB Serial Device converter now attached to ttyUSB0
From the beginning this device disconnected directly after it had been connected. I solved that problem by installing the brltty package. After this fix, however, the device device would instead disconnect after several minutes.
After the device had been automatically disconnected by software, dmesg would show the following error messages:
[19513.820000] drivers/
[19513.820000] drivers/
I've been looking for a solution to this problem, but so far the best choice i know of is to unload the ehci-hcd module (sudo rmmod ehci-hcd). I'm not sure if this really is a workaround for this problem, and i don't know what other problems it may cause, but the device has not yet disconnected again after i unloaded this module.
/Hans
Changed in linux-source-2.6.20: | |
importance: | Undecided → Medium |
I forgot to write that my system is an up to date ubuntu feisty fawn.
/Hans