I upgrade to use systemd.
But now the USB2TTL device can not work anymore.
When I plug in the systemd linux, it won't show any message on /var/log/messages.
Before upgrade, It will show the following messages, and I can use minicom to connect my device through the USB2TTL cable.
[ 4799.549830] usb 1-4.2: new full-speed USB device number 7 using ehci_hcd [ 4799.672196] usbcore: registered new interface driver usbserial [ 4799.672212] usbcore: registered new interface driver usbserial_generic [ 4799.672221] USB Serial support registered for generic [ 4799.672230] usbserial: USB Serial Driver core [ 4799.676726] usbcore: registered new interface driver pl2303 [ 4799.676739] USB Serial support registered for pl2303 [ 4799.676757] pl2303 1-4.2:1.0: pl2303 converter detected [ 4799.677690] usb 1-4.2: pl2303 converter now attached to ttyUSB0
It seems a problem related to 'poor connection'
Last edited by dlin (2012-11-14 01:29:01)