Public bug reported:
Whe try to use the GSM USB Modem, it generate many error messages and
take a big time to start to work, when work. Sometimes works sometimes
not. To try again i need to change the usb. Sometimes, dont matter how
hard i try, nothing happens.
[ 80.753092] usbcore: registered new interface driver usbserial
[ 80.753340] usbcore: registered new interface driver usbserial_generic
[ 80.753343] usbserial: USB Serial Driver core
[ 80.761578] usb 1-3: GSM modem (1-port) converter now attached to ttyUSB0
[ 80.761705] usb 1-3: GSM modem (1-port) converter now attached to ttyUSB1
[ 80.761807] usb 1-3: GSM modem (1-port) converter now attached to ttyUSB2
[ 80.761824] usbcore: registered new interface driver option
[ 82.720728] usb 1-3: usbfs: USBDEVFS_CONTROL failed cmd usb_modeswitch rqt
128 rq 6 len 255 ret -110
[ 83.731338] usb 1-3: usbfs: USBDEVFS_CONTROL failed cmd usb_modeswitch rqt
128 rq 6 len 255 ret -110
[ 84.741338] usb 1-3: usbfs: USBDEVFS_CONTROL failed cmd usb_modeswitch rqt
128 rq 6 len 255 ret -110
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: gsm mmc storage usb zte
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https://bugs.launchpad.net/bugs/728226
Title:
Strange Behavior when Access ZTE MMC Storage
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