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10 Posts

01-21-2019

US

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  • Message 1 of 16

Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-01-23, 2:34 AM

We have ~750 T480s (model 20L8S4HL00) laptops running Win10 Enterprise 1703 in our environment, and at least 35 of the laptops have non-functional Fibocom L850-GL WWAN modules. What makes matters worse is that this issue can also cause repeated BSoDs, sometimes multiple per day.

 

Problem Symptoms and Actions Taken

  • The "Intel(R) USB Flash Loader utility" / "Fibocom USB Flash Loader Utility" repeatedly connects and disconnects roughly once a minute, and when doing so the Windows "device unplugged" sound is heard. The HWID of this device is "USB\VID_8087&PID_07F5\5&1AD8E564&0&6". Refer to the screenshot below 
  • The frequent and repeated hardware disconnections cause problems with the enterprise security software we use for encrypting external media, to the point that after a certain point the computer experiences a BSoD
  • The only associated driver that remains active in Device Manager is the "Intel(R) XMM7360-P WWAN", all other associated WWAN drivers show up as hidden with code 45 (disconnected)
  • If all WWAN drivers are uninstalled and the drivers are deleted, the only devices that are subsequently discovered are the flash loader utility and the Intel XMM7360, all of the others are no longer found and Windows cannot seem to find them again
  • Installing all of the latest device drivers and firmware using the Lenovo System Update tool do not mitigate this issue, nor does manually uninstalling/reinstalling the WWAN drivers
  • Temporarily disabling the built-in battery and disconnecting the AC and letting it sit for 5 minutes does not appear to change anything, nor does performing the same procedure combined with holding down the power button for 30 seconds 
  • Temporarily disabling the WWAN module in the BIOS, booting into Windows, then enabling the WWAN module and booting into Widows also does not seem to have any effect
  • When this issue is occuring, the system will not transition into sleep mode. Disabling the WWAN module in the BIOS the system falls asleep without issue. This has not been confirmed as a symptom on all systems with the issue, but it is definitely the case on at least a couple.
  • On a system with the WWAN problem, the NVMe SSD was swapped out with one from a different T480s of the same model with the same driver set that does not have the problem, and the precise same issue started happening, including being unable to transition into sleep mode. When the NVMe SSD with the known good image was put back in its original chassis the problem went away and the drivers reappeared. Note that the built-in battery was disabled during this process and the system was rebooted several times.
  • The WWAN module from a bad T480s was pulled and put into a known good T480s, and the same issue occurred
  • This does not occur on all systems, and it's currently unknown why this happens
  • Note that several process monitor traces were captured, but nothing obvious was uncovered after analyzing them. If you would like copies of them please provide me with a Lenovo email address or secure Lenovo file transfer site and they will be sent over

Environment Info

  • All systems were imaged using the same Win10 Enterprise 1703 base image with the Lenovo SCCM driver set for Win10 1703, and the WWAN driver initially installed is nz3wj07w (0.9.4.89)
  • When the systems were imaged all BIOS settings and BIOS version (1.26) were the same 
  • Not sure if this matters, but when the WWAN driver installed there's a chance that the SIM card was not inserted at that time
  • Note that these systems are part of a large enterprise and updating Windows to a more recent build is essentially not possible at this time

Temporary Mitigation

  • The BSoD can be mitigated in our case by uninstalling our external media encryption software, which is obviously less than ideal; however, note that the WWAN hardware still connects/disconnects repeatedly without said software installed
  • The BSoD and repeatedly disconnecting hardware can be mitigated entirely by disabling the WWAN module in the BIOS, which is also less than ideal because then those laptops are unable to utilize cellular data

Using Nirsoft USBLogView the connection/disconnection frequency can be seen below:

 

What do you suggest to try next in an effort to correct this problem?

 

Any assistance with this is greatly appreciated.

 

Thanks!

 

- Andy

 

PS - SR 8012474714 has also been submitted for this issue.

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7504 Posts

09-04-2014

SK

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  • Message 2 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-01-23, 19:28 PM

Hi Andy,

 

Thanks for posting and brining this to our attention. The Community was never intended as an official direct support channel and, as such, isn't staffed as one to adequately address an issue such as that you are reporting; would be difficult for us to see it through to a resolution. I do see that support have engaged with you and are assisting, please work with them as they have the resources necessary to assist in these circumstances.

 

 

Andy

 

English Community Administrator
Lenovo eServices

Please remember to come back and mark the post that you feel answered your question as the solution. 
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Please don't ask me questions by Personal Message; questions belong in the forums.

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8 Posts

01-24-2019

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  • Message 3 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-01-24, 18:58 PM

I have the exact same issue following the 2.0.1.44 driver update via Vantage System Update.  The only difference is the Description given by USBLogView.  Yours shows Fibocom USB Flash Loader, mine says Intel(R) USB Flash Loader.

 

Using system restore to go back before the update.  Attempts to manually install the driver are "successful" but does not restore WWAN functionality.  It is missing from windown.  Tech support is sending a new card.  Hopefully that helps.

 

Based on the data found in \Windows\Firmware\FwSwitchbin\SwitchDebugLog it would appear to be a firmware flash problem.

 

 

[4900] [5468] 01-24 12:26:59:496 : [Information][CServiceStart::StartWork] StartWork Enter >>
[4900] [5468] 01-24 12:26:59:498 : [Info][CRegistryHelper::]backupServiceLog enter
[4900] [5468] 01-24 12:26:59:499 : [Info][CRegistryHelper]backupServiceLog path=C:\Windows\Firmware\FwSwitchbin\SwitchDebuglog.log, path_bk=C:\Windows\Firmware\FwSwitchbin\SwitchDebuglog_bk.log
[4900] [5468] 01-24 12:26:59:499 : [Info][CRegistryHelper::]backupServiceLog File size=417044
[4900] [5468] 01-24 12:26:59:634 : [Info][CRegistryHelper::]backupServiceLog done
[4900] [5468] 01-24 12:26:59:635 : [Info][CRegistryHelper]getNonSecureEnable enter:
[4900] [5468] 01-24 12:26:59:635 : cConfigFile path=C:\Windows\Firmware\FwSwitchbin\fbconfig.ini
[4900] [5468] 01-24 12:26:59:635 : CONFIG_NONSECURE_ENABLE = 0
[4900] [5468] 01-24 12:26:59:635 : [Info][CRegistryHelper]getNonSecureEnable done.
[4900] [5468] 01-24 12:26:59:636 : [Information][CGlobalEnv::CGlobalEnv()] CGlobalEnv initial enter.
[4900] [6180] 01-24 12:26:59:636 : [Infomation][CStateWork::Work] Work start and waiting 10s.
[4900] [5468] 01-24 12:26:59:636 : [Information][CGlobalEnv::CGlobalEnv()] Service run path=C:\Windows\Firmware\FwSwitchbin\
, fwDataPath=C:\Windows\Firmware\FwSwitchbin\FirmwareData\
[4900] [5468] 01-24 12:26:59:637 : [Information][CGlobalEnv::CGlobalEnv()] Firmware path check,umdfPath=C:\Windows\Firmware\Intel\
, flashPath=C:\Windows\Firmware\Firmwareflash\
[4900] [5468] 01-24 12:26:59:637 : [Information][CGlobalEnv::CGlobalEnv()] CGlobalEnv initial done.
[4900] [5468] 01-24 12:26:59:638 : [Information][CServiceStart::ManualQueryDownloadPath] Find C:\Windows\Firmware\Intel\m2_7360_nand.flz in UmdfPath.
[4900] [5468] 01-24 12:26:59:638 : [Infomation][CPacketMonitor::StartFolderListener] Monitor download dir Success.
[4900] [5468] 01-24 12:26:59:683 : [Infomation][CMbnMonitor::AttachStateEvent] Success
[4900] [5468] 01-24 12:26:59:683 : [Information][CServiceStart::StartWork] StartWork(true) Done <<
[4900] [6180] 01-24 12:27:09:638 : [Infomation][CStateWork::Work] 10s delay done.
[4900] [6180] 01-24 12:27:09:638 : [Infomation][CStateWork::Work] Enter Firmware Upgrade.
[4900] [6180] 01-24 12:27:09:654 : [Information][CStateWork::FirmwareUpgrade] TryOpenFile Exclusive open file success .
[4900] [6180] 01-24 12:27:09:654 : [Infomation][CDownloadFirmware::SetRegValue](fwupdateflow_result,0) Enter,path=SOFTWARE\WOW6432Node\Intel\FlashService
[4900] [6180] 01-24 12:27:09:654 : [Information][CStateWork::FirmwareUpgrade] Check previous FirmwareData exist = TRUE
[4900] [6180] 01-24 12:27:09:654 : [Info]backupFlzZip enter
[4900] [6180] 01-24 12:27:09:654 : [Info] copy[C:\Windows\Firmware\Intel\m2_7360_nand.flz] ,dest path:C:\Windows\Firmware\FwSwitchbin\m2_7360_nand.flz
[4900] [6180] 01-24 12:27:09:706 : [Info]backupFlzZip=1 done.
[4900] [6180] 01-24 12:27:09:706 : [Info]unzipFlzPackage enter
[4900] [6180] 01-24 12:27:09:722 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\M2_7360_NAND/850Download.zip
[4900] [6180] 01-24 12:27:09:949 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\M2_7360_NAND/FwP42_Secureboot.zip
[4900] [6180] 01-24 12:27:09:949 : [Info]unzipFlzPackage=1 Done.
FwZip=C:\Windows\Firmware\FwSwitchbin\M2_7360_NAND/FwP42_Secureboot.zip,DownloadZip=C:\Windows\Firmware\FwSwitchbin\M2_7360_NAND/850Download.zip
[4900] [6180] 01-24 12:27:09:949 : [Info]unZipDownloadFiles enter
[4900] [6180] 01-24 12:27:09:949 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\config/
[4900] [6180] 01-24 12:27:09:949 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\config/switchtable.xml
[4900] [6180] 01-24 12:27:09:992 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\Firmwareflashdownload.dll
[4900] [6180] 01-24 12:27:10:009 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\FwUpdatePro.exe
[4900] [6180] 01-24 12:27:10:036 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\WWANFirmwareFlash.dll
[4900] [6180] 01-24 12:27:10:036 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\WWANFirmwareFlashConfig.ini
[4900] [6180] 01-24 12:27:10:553 : [Info]unZipDownloadFiles=1 done.
[4900] [6180] 01-24 12:27:10:553 : [Info]unZipFlsFiles enter
[4900] [6180] 01-24 12:27:10:765 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\18500.5001.00.01.20.72_5003.05_Secureboot.fls
[4900] [6180] 01-24 12:27:10:986 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\18500.5001.00.01.20.75_5003.05_Secureboot.fls
[4900] [6180] 01-24 12:27:11:194 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\18500.5001.00.01.20.78_5003.05_Secureboot.fls
[4900] [6180] 01-24 12:27:11:406 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\18500.5001.00.02.22.76_5003.05_Secureboot.fls
[4900] [6180] 01-24 12:27:11:422 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\ATT_cust.201.010_signed.fls
[4900] [6180] 01-24 12:27:11:437 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\DT_cust.119.005_signed.fls
[4900] [6180] 01-24 12:27:11:493 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\DoCoMo_cust.216.009_signed.fls
[4900] [6180] 01-24 12:27:11:509 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Generic_cust.001.003_signed.fls
[4900] [6180] 01-24 12:27:11:524 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\KDDI_cust.115.012_signed.fls
[4900] [6180] 01-24 12:27:11:530 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Optus_AU_cust.226.005_signed.fls
[4900] [6180] 01-24 12:27:11:546 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Orange_cust.204.005_signed.fls
[4900] [6180] 01-24 12:27:11:546 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\SBM_cust.218.012_signed.fls
[4900] [6180] 01-24 12:27:11:562 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Sprint_cust.102.003_signed.fls
[4900] [6180] 01-24 12:27:11:579 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Swisscom_cust.210.005_signed.fls
[4900] [6180] 01-24 12:27:11:579 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Telefonica_cust.205.005_signed.fls
[4900] [6180] 01-24 12:27:11:595 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Telstra_cust.107.005_signed.fls
[4900] [6180] 01-24 12:27:11:612 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Verizon_cust.101.009_signed.fls
[4900] [6180] 01-24 12:27:11:619 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\Vodafone_Germany_cust.202.006_signed.fls
[4900] [6180] 01-24 12:27:11:619 : [Info] unzip file:C:\Windows\Firmware\FwSwitchbin\2019-1-24_12-27-9_flztmp\package_info.xml
[4900] [6180] 01-24 12:27:12:147 : [Info]unZipFlsFiles=1 done.
[4900] [6180] 01-24 12:27:12:147 : [Infomation]CXmlParser::GetPacketXmlInfo() Enter
[4900] [6180] 01-24 12:27:12:158 : [Infomation]CXmlParser::GetPacketXmlInfo(return:TRUE) Done
[4900] [6180] 01-24 12:27:12:158 : [Infomation]CXmlParser::GetPacketXmlInfo() Enter
[4900] [6180] 01-24 12:27:12:158 : [Infomation]CXmlParser::GetPacketXmlInfo(return:TRUE) Done
[4900] [6180] 01-24 12:27:12:158 : [Infomation][CPacketUpdate::MergePacket] Package Ver current is:18500.5003.99.00.00.42 ,new coming is:18500.5003.99.00.00.42
[4900] [6180] 01-24 12:27:12:158 : [Infomation][CPacketUpdate::MergePacket] Replace firmware packet.
[4900] [6180] 01-24 12:27:12:158 : [Infomation][CPacketUpdate::ReplacePacket] MoveFile unzip--->data success. Code=0
[4900] [6180] 01-24 12:27:12:158 : [Infomation][CPacketUpdate::MergePacket] MergePacket Result : success.
[4900] [6180] 01-24 12:27:12:158 : [Information][CStateWork::FirmwareUpgrade] Firmware Packet update success,begin upgrade.
[4900] [6180] 01-24 12:27:12:174 : [Infomation][CStateWork::FirmwareSwitch] Start FW update process, to get carrierID.
[4900] [6180] 01-24 12:27:12:174 : [Info][CRegistryHelper] IsFwupdateOptionEnabled enter:
[4900] [6180] 01-24 12:27:12:174 : [Info] GetMonitorRegValue(FwUpdateOption) enter, path=SOFTWARE\WOW6432Node\Intel\FlashService
[4900] [6180] 01-24 12:27:12:174 : [Error][GetMonitorRegValue] RegQueryValueEx Fail. Code 183
[4900] [6180] 01-24 12:27:12:174 : [Info]GetMonitorRegValue(1) done.
[4900] [6180] 01-24 12:27:12:174 : [Info][CRegistryHelper]IsFwupdateOptionEnabled return=true done
[4900] [6180] 01-24 12:27:12:174 : [Info][CRegistryHelper]getSIMneedEnabled enter:
[4900] [6180] 01-24 12:27:12:174 : [Info][CRegistryHelper]getSIMneedEnabled=true done
[4900] [6180] 01-24 12:27:12:186 : [Info-OEM][Error]Execute AT+GTCURCAR? Error.
[4900] [6180] 01-24 12:27:12:186 : [Info-OEM] Get Current CarrierId done.
[4900] [6180] 01-24 12:27:12:186 : [Infomation][CStateWork::FirmwareSwitch] Get carrier-ID:-1, MBIM interface or AT channel error.
[4900] [6180] 01-24 12:27:13:198 : [Info-OEM][Error]Execute AT+GTCURCAR? Error.
[4900] [6180] 01-24 12:27:13:198 : [Info-OEM] Get Current CarrierId done.
[4900] [6180] 01-24 12:27:13:198 : [Infomation][CStateWork::FirmwareSwitch] Get carrier-ID:-1, MBIM interface or AT channel error.
[4900] [6180] 01-24 12:27:14:219 : [Error][CStateWork::FirmwareSwitch] SIMneed is enabled but can't get sim PLMN.***

[4900] [6180] 01-24 12:27:14:219 : [Infomation][CStateWork::FirmwareSwitch] FWupdater Result is Fail.
[4900] [6180] 01-24 12:27:14:219 : [Fail][CStateWork::FirmwareUpgrade] FirmwareUpdate(download) Fail. Roll back PreviousPackets.
[4900] [6180] 01-24 12:27:14:285 : [Information][CPacketUpdate::DeleteUmdfFlz] Fw updated fail ,need keep UmdfFlz for next trial.

[4900] [6180] 01-24 12:27:14:285 : [Infomation][CStateWork::Work] Enter Firmware Switch.
[4900] [6180] 01-24 12:27:14:285 : [Infomation][CStateWork::FirmwareSwitch] Start FW Swich process, to get SIM-info
[4900] [6180] 01-24 12:27:14:285 : [error][CStateWork::GetSimInfo] Get All Interface Fail.Return value hr=0x80070490
[4900] [6180] 01-24 12:27:14:285 : [Fail][CStateWork::FirmwareSwitch] Can't Get sim iccid mccmnc or no sim.

 

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1 Posts

06-11-2019

CA

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  • Message 4 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-06-11, 17:30 PM

Any fixes for this? I've got a user on a 6th gen Carbon X1 experiencing the same issue (disconnecting/connecting sounds).

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8 Posts

01-24-2019

US

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  • Message 5 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-06-12, 14:30 PM

A driver update via ThinkVantage eventually solved it for me.  Not sure which driver it was, but after my 4/1 round of updates the problem stopped.  I had installed the following driver updates:

 

Thunderbolt Firmware

BIOS Update

Intel WLAN Driver

TP Hotkey Featurs

Lenovo Power Managment

Synaptics Fingerprint Reader Driver

Lenovo USB Selective Suspend Patch

 

G'luck.

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10 Posts

01-21-2019

US

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  • Message 6 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-07-31, 15:15 PM

My apologies for the delayed response.

 

When the WWAN driver installed it attempted to update the WWAN module's firmware.  In our case the device drivers for the system install during our initial system imaging process, and our imaging process triggers a reboot, so we think that the WWAN firmware was potentially updating when the computer was restarted by the imaging process, thereby causing the firmware update to fail. Just to be on the safe side, we've since updated our imaging process to wait a while before triggering a reboot after drivers start installing, and we haven't encountered the issue since.

 

In some cases installing the most recent drivers corrected the issue, but some WWAN modules had to be physically replaced. If the user doesn't plan on using the WWAN module you could disable it in the BIOS.

 

If updating the WWAN drivers and firmware does not correct the issue, the WWAN module may need to be replaced by Lenovo.

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5 Posts

12-08-2017

US

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  • Message 7 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-10-02, 18:04 PM

Having a very similar issue on a T590. It's driving me insane. 

 

The Fibocom USB Flash Loader Utility "plugs in" which disconnects my WWAN card, then a second or two later, the Flash Loader Utility "unplugs" which turns everything back on. I've updated drivers, I've rolled back drivers. Should I just replace the WWAN card at this point? 

 

I also notice that the driver provider for the Fibocom card is Microsoft when I look at it in Deivce Manager. Is that expected or should it be Fibocom? I downloaed the most up-to-date drivers (that were release on September 12, 2019 according to the donwload site,) but the date on the driver is earlier in 2019. 

 

Any help would be greatly apprecaited. 

 

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01-21-2019

US

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  • Message 8 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-10-02, 18:37 PM

It does appear that the issue you are experiencing is similar to the one that we had, but in your case several (related) devices are connecting and disconnecting while for us it was consistently just one. If the unit is still under warranty I suggest contacting Lenovo with this information, because the firmware on the WWAN module might be having problems.

 

If you don't use the WWAN functionality you could disable it in the BIOS and in theory the problem should go away. 

 

As far as drivers and firmware go, if you haven't already done so you could run the "Lenovo System Update" tool which will download and install all of the latest drivers and whatnot for your model. Here's a link to the current version if you need it.

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12-08-2017

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  • Message 9 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-10-02, 19:11 PM

Thanks, Andy for responding so quickly! I have ran the Lenovo system update. It's less than a month old, so I'll definitely turn it into warranty.

 

I use (or try to use) the WWAN card daily, so I defintiely need it. 

 

I'll have the card replaced and hopefully that will resolve it. Thanks again!

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1 Posts

10-08-2019

CA

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  • Message 10 of 16

Re: Fibocom L850-GL WWAN Problems on Multiple T480s Laptops

2019-10-08, 18:04 PM

Hi all,

Just chiming in here with my own experience to date. Around the same time this thread was born, my workplace took delivery of 14 L480 notebooks with the Fibocom L850-GL WWAN module. 

 

To date, 10 of the 14 have demonstrated the failure, or one extremely similar to what Andy404 originally called out, on a regular and ongoing basis, with recurring hardware disconnect sounds going off all the time and the WWAN module disappearing as a device before coming back shortly after. The remaining units are somewhat of a Schrodinger's WWAN, because we have been unable to use them without confidence in the WWAN functionality.

 

The units in question have been brought up to the latest update levels using Lenovo System Update and run Win10 1809. We never observed them working any better prior to any updates, and we also haven't seen updates improve things.

 

I am not at the appropriate level in my organization to interface with Lenovo support about this, but I wanted my voice to be heard here. This is far from isolated. 

 

Kind regards.

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