Re: Does not Debian support mobile broadband anymore?
wglxy@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-devel@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-devel@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-devel@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
Reply to: