Yes, as you say, after the changing of this device, the mobile broadband works again. It is a problem of the device. Thank you very much!
> -----原始邮件----- > 发件人: "Bjørn Mork" <bj...@mork.no> > 发送时间: 2017-11-23 20:30:18 (星期四) > 收件人: wg...@china.com > 抄送: debian-laptop@lists.debian.org > 主题: Re: Does not Debian support mobile broadband anymore? > > Yes, this is expected. As I said: 1199:9078 is a booloader mode. This mode > is > normally only visible in two situations: > > 1) when upgrading firmware > 2) when the firmware fails to boot > > Your case is numer 2. The booloader will try to boot the modem firmware > a few times (seen as multiple connect+disconnect events) and then enter > a failsafe/debug mode. There is only a single USB interface available > in this mode, as you can see from your lsusb output. This is a serial > function which is handled by the same driver that will handle the normal > modem serial function, making it appear to the system as typically > /dev/ttyUSB0. But there is *no modem* related function there. Only a > Qualcomm or Sierra Wireless bootloader debug function, speaking the > SAHARA protocol. > > As I said: Please verify that the modem works on any other OS if you > can. Downgrade your Debian install if you believe that will help. If it > doesn't, then you should assume that the firmware or NVRAM on this modem > is damaged. This is most likely a warranty repair since this is a rather > new laptop. You should therefore contact Lenovo support. > > > Bjørn > > wg...@china.com writes: > > > Sometimes, the device Sierra Wireless EM7455 is connected success, and run > > lsusb, mmcli -L, their output is below. No any modem is found. > > > > lsusb -v > > ************************************************************************ > > Bus 001 Device 009: ID 1199:9078 Sierra Wireless, Inc. > > Couldn't open device, some information will be missing > > Device Descriptor: > > bLength 18 > > bDescriptorType 1 > > bcdUSB 2.00 > > bDeviceClass 0 (Defined at Interface level) > > bDeviceSubClass 0 > > bDeviceProtocol 0 > > bMaxPacketSize0 64 > > idVendor 0x1199 Sierra Wireless, Inc. > > idProduct 0x9078 > > bcdDevice 0.00 > > iManufacturer 1 > > iProduct 2 > > iSerial 3 > > bNumConfigurations 1 > > Configuration Descriptor: > > bLength 9 > > bDescriptorType 2 > > wTotalLength 32 > > bNumInterfaces 1 > > bConfigurationValue 1 > > iConfiguration 0 > > bmAttributes 0x80 > > (Bus Powered) > > MaxPower 2mA > > Interface Descriptor: > > bLength 9 > > bDescriptorType 4 > > bInterfaceNumber 0 > > bAlternateSetting 0 > > bNumEndpoints 2 > > bInterfaceClass 255 Vendor Specific Class > > bInterfaceSubClass 255 Vendor Specific Subclass > > bInterfaceProtocol 255 Vendor Specific Protocol > > iInterface 0 > > Endpoint Descriptor: > > bLength 7 > > bDescriptorType 5 > > bEndpointAddress 0x81 EP 1 IN > > bmAttributes 2 > > Transfer Type Bulk > > Synch Type None > > Usage Type Data > > wMaxPacketSize 0x0200 1x 512 bytes > > bInterval 0 > > Endpoint Descriptor: > > bLength 7 > > bDescriptorType 5 > > bEndpointAddress 0x01 EP 1 OUT > > bmAttributes 2 > > Transfer Type Bulk > > Synch Type None > > Usage Type Data > > wMaxPacketSize 0x0200 1x 512 bytes > > bInterval 0 > > ***************************************************************************** > > > > mmcli -L > > ************************************ > > No modems were found > > ************************************ > > > > > >> -----原始邮件----- > >> 发件人: "Bjørn Mork" <bj...@mork.no> > >> 发送时间: 2017-11-23 16:38:25 (星期四) > >> 收件人: wg...@china.com > >> 抄送: debian-laptop@lists.debian.org > >> 主题: Re: Does not Debian support mobile broadband anymore? > >> > >> wg...@china.com writes: > >> > >> > I use dmesg to view the system message, and get these informations as > >> > below, > >> > > >> > [ 1535.372130] usb 1-6: new high-speed USB device number 8 using xhci_hcd > >> > [ 1535.378889] thinkpad_acpi: unknown possible thermal alarm or keyboard > >> > event received > >> > [ 1535.378893] thinkpad_acpi: unhandled HKEY event 0x60b0 > >> > [ 1535.378894] thinkpad_acpi: please report the conditions when this > >> > event happened to ibm-acpi-de...@lists.sourceforge.net > >> > [ 1535.513304] usb 1-6: New USB device found, idVendor=1199, > >> > idProduct=9078 > >> > [ 1535.513308] usb 1-6: New USB device strings: Mfr=1, Product=2, > >> > SerialNumber=3 > >> > [ 1535.513310] usb 1-6: Product: Sierra Wireless EM7455 Qualcomm > >> > [ 1535.513312] usb 1-6: Manufacturer: Sierra Wireless, Incorporated > >> > [ 1535.513313] usb 1-6: SerialNumber: LF72567821041020 > >> > [ 1535.513996] qcserial 1-6:1.0: Qualcomm USB modem converter detected > >> > [ 1535.514212] usb 1-6: Qualcomm USB modem converter now attached to > >> > ttyUSB0 > >> > [ 1535.515015] usb 1-6: USB disconnect, device number 8 > >> > [ 1535.515330] qcserial ttyUSB0: Qualcomm USB modem converter now > >> > disconnected from ttyUSB0 > >> > [ 1535.515356] qcserial 1-6:1.0: device disconnected > >> > [ 1536.014626] thinkpad_acpi: unknown possible thermal alarm or keyboard > >> > event received > >> > [ 1536.014628] thinkpad_acpi: unhandled HKEY event 0x60b1 > >> > [ 1536.014629] thinkpad_acpi: please report the conditions when this > >> > event happened to ibm-acpi-de...@lists.sourceforge.net > >> > [ 1536.524163] usb 1-6: new high-speed USB device number 9 using xhci_hcd > >> > [ 1536.665054] usb 1-6: config 1 interface 0 altsetting 0 bulk endpoint > >> > 0x1 has invalid maxpacket 64 > >> > [ 1536.665058] usb 1-6: config 1 interface 0 altsetting 0 bulk endpoint > >> > 0x81 has invalid maxpacket 64 > >> > [ 1536.665988] usb 1-6: New USB device found, idVendor=1199, > >> > idProduct=9078 > >> > [ 1536.665992] usb 1-6: New USB device strings: Mfr=1, Product=2, > >> > SerialNumber=3 > >> > [ 1536.665994] usb 1-6: Product: Sierra Wireless EM7455 Qualcomm > >> > [ 1536.665996] usb 1-6: Manufacturer: Sierra Wireless, Incorporated > >> > [ 1536.665998] usb 1-6: SerialNumber: LF72567821041020 > >> > [ 1536.666822] usb 1-6: USB disconnect, device number 9 > >> > [ 1544.686163] thinkpad_acpi: unknown possible thermal alarm or keyboard > >> > event received > >> > [ 1544.686167] thinkpad_acpi: unhandled HKEY event 0x60b0 > >> > [ 1544.686168] thinkpad_acpi: please report the conditions when this > >> > event happened to ibm-acpi-de...@lists.sourceforge.net > >> > [ 1553.785361] usb 1-6: new high-speed USB device number 11 using > >> > xhci_hcd > >> > [ 1553.926371] usb 1-6: New USB device found, idVendor=1199, > >> > idProduct=9078 > >> > [ 1553.926390] usb 1-6: New USB device strings: Mfr=1, Product=2, > >> > SerialNumber=3 > >> > [ 1553.926392] usb 1-6: Product: Sierra Wireless EM7455 Qualcomm > >> > [ 1553.926394] usb 1-6: Manufacturer: Sierra Wireless, Incorporated > >> > [ 1553.926395] usb 1-6: SerialNumber: LF72567821041020 > >> > [ 1553.926986] qcserial 1-6:1.0: Qualcomm USB modem converter detected > >> > [ 1553.927112] usb 1-6: Qualcomm USB modem converter now attached to > >> > ttyUSB0 > >> > [ 1553.928024] usb 1-6: USB disconnect, device number 11 > >> > [ 1553.928258] qcserial ttyUSB0: Qualcomm USB modem converter now > >> > disconnected from ttyUSB0 > >> > [ 1553.928275] qcserial 1-6:1.0: device disconnected > >> > [ 1554.937425] usb 1-6: new high-speed USB device number 12 using > >> > xhci_hcd > >> > [ 1555.078351] usb 1-6: config 1 interface 0 altsetting 0 bulk endpoint > >> > 0x1 has invalid maxpacket 64 > >> > [ 1555.078354] usb 1-6: config 1 interface 0 altsetting 0 bulk endpoint > >> > 0x81 has invalid maxpacket 64 > >> > [ 1555.079241] usb 1-6: New USB device found, idVendor=1199, > >> > idProduct=9078 > >> > [ 1555.079245] usb 1-6: New USB device strings: Mfr=1, Product=2, > >> > SerialNumber=3 > >> > [ 1555.079247] usb 1-6: Product: Sierra Wireless EM7455 Qualcomm > >> > [ 1555.079249] usb 1-6: Manufacturer: Sierra Wireless, Incorporated > >> > [ 1555.079250] usb 1-6: SerialNumber: LF72567821041020 > >> > [ 1555.080269] usb 1-6: USB disconnect, device number 12 > >> > > >> > > >> > That is to say, the device Sierra Wireless EM7455 is connected and > >> > disconnected frequently. It should be a problem of something. But I do > >> > not known what it is. This device worked fine before Oct 29. > >> > >> This is the problem, but I don't it is related to Debian versions in any > >> way. > >> > >> The modem seems to be constantly resetting. I expect it eventually > >> settles when the (modem) bootloader failsafe mode kicks in. But it will > >> then probably be in a debug mode. > >> > >> Notice that the device ID is 1199:9078 all the way. This is the > >> bootloader ID. The application ID is 1199:9079. If you have older logs > >> from when the modem worked, then I am pretty sure you'll see that ID > >> instead. > >> > >> I'm afraid there is little which can be done about this on an OS level, > >> unless the root cause is some platform (Lenovo) specific issue which > >> triggers the modem boot failure. My advice would be to test this with > >> another OS, if possible, and then contact Lenovo support if it fails > >> there as well. > >> > >> > >> > >> Bjørn
