Over 1 million tech questions and answers.

T580 and X1 Carbon USB-C/Thunderbolt Power/Connectivity issues

Q: T580 and X1 Carbon USB-C/Thunderbolt Power/Connectivity issues

Hi there, I've been experiencing issues with both Thinkpad T580's and 5th/6th Gen X1 Carbons. Basically any model that has USB-C/Thunberbolt connectivity. I have had users report that their laptops either connected to their docking station or power adaptor do not charge. Windows reports "Plugged in, Not charging", and power drops. The dock does not appear to work, external screens, network etc. When disconnected from the power source or dock, the orange power light on the left site where the USB-C connector is stays on. This is the light that comes on when charging. When the laptop is shut down, the same orange light stays on. The work around I've found is to go into the BIOS, Power settings, Disconnect the internal battery. (External battery needs to be removed for the T series). After selecting this, the laptop powers off and the orange charging light goes out. Once reconnected to a power source, the laptop will power on, work with the dock and properly charge. I have encountered this on multiple T580's and multiple X1 Carbons. I've attempted to run the System Update utility (excellent app btw) and made sure BIOS and Thunderbolt firmware etc is up to date, yet the issue still persists. Logging into the BIOS and disconnecting the internal battery is not a viable solution. Is there a solution for this, and are Lenovo aware of this issue? Thanks,Adam

Read other answers
RELEVANCY SCORE 200
Preferred Solution: T580 and X1 Carbon USB-C/Thunderbolt Power/Connectivity issues

I recommend downloading and running DAP. It can help sort out any driver and firmware related issues on your system

It's worked out well for many of us in the past.

You can download it direct from this link http://downloaddap.org. (This link will open the download page of DAP so you can save a copy to your computer.)

RELEVANCY SCORE 82.4

 My T580 suddenly one day stopped reading my external USB-C hard drive, I tried updating the drivers and several other suggested repairs with none of them working. The power light on the drive would come on but the computer didn't read it, verified with a second drive and they both work on my other computers. Looking at the timeline, I realized that this happened while the computer was still within it's warranty period, but I was busy and just let the problem go. Then two weeks later the computer just shut down on me and after letting it sit with the lid closed for a while, it was able to restart and I got a warning message at the BIOS screen that "The Power Adapter is of lower wattage than the one supplied with the machine" or something along those lines. Once booted up I was able to see that battery nuber one was fully depleted to 2% and the 2nd battery was at 99%, it then shut down on me again. I ordered a replacement power adapter to test and got the same message and the same symptoms, the computer would basically trickle charge at a rate slower than it consumed power, at this point I finally called customer service and started a repair ticket, this is when they told me that the computer was three weeks out of warranty....I send it in and a week later recieve a repair estimate of $589 to replace the whole motherboard. I called right back and complained that this computer was having problems before the warranty was up and was simply told it was out of warran... Read more

Read other answers
RELEVANCY SCORE 75.2

I got a fully specced X1 Carbon 6th Gen (16g, 1TB, i7).  Had issues with it.  Took about a month for Lenovo to fix and send back (they had to basically replace everything).  Now, my computer crashes whenever I plug in my CalDigit T3 (kys.sys error).  CalDigit works perfectly fine with other T3 laptops including my 2018 Macbook Pro. Further, this newly "fixed" computer will not allow me to install the latest critical update and will not recognize my scansnap ix100 scanner. I'm getting flung around from tech support claiming this is a software issue and I need to purchase the $199 service to fix.   

Read other answers
RELEVANCY SCORE 73.6

I just got a new Carbon X1 6th generation (20KG).  I started using this with my Thunderbolt 3 dock (40AC), that I successfully used with my previous Carbon X1 5th Generation. There seems to be some compatibility issues here. After using it with the docking a while (apprx. 1 hour), the X1 suddenly started to continuously disconnect/reconnect from the dock (each 2-3 seconds), before it permanently was disconnected from the docking and would not connect at all.  When I disconnected the X1 from the dock and restarted (without connecting to dock) the X1 Thunderbolt software and devices/drivers related to that on the X1 "went crazy" and appeared/disappeared from the device manager continuously (each 2-3 seconds). I needed to enter bios and temporarily disable internal battery for it to normalize again. If I then connected to dock, the same would happen after some time. I've updated Thunderbolt software, drivers, firmware and also Thunderbolt 3 dock firmware and drivers, so no more to do there. I have not verified it completely yet, but it might be that the disconnect/crazy_stuff happens when the battery charge of the X1 reaches 100%. I once connected the X1 to the dock when the charge was 97% and it was stable then (the X1 does not charge on AC when the battery is > 95%). If this is the reason, one solution might then be to use Lenovo Vantage to set max charge to e.g. 97%, but I think this is a poor solution. Some ... Read more

Read other answers
RELEVANCY SCORE 72.8

I have a 6th Gen X1.  One of the thunderbolt ports no longer works with the monitors on the docking station - the keyboard and mouse do work.  The monitors do work when plugged into the other thunderbolt port.  I am worried that one will stop working too.   I do not know of any damage or issues and I ensured the latest drivers were installed.   Any ideas on how to troubleshoot? 

Read other answers
RELEVANCY SCORE 72.8

We purchased a new X1 Carbon 6th Gen with the new Thunderbolt 3 Dock Win 10 1803 and have had all kinds of problems. Bad enough to consider other brand alternatives. All Lenovo drivers are current, we updated the firmware and drivers for the dock. With that we still have the following problems and dont know how to resolve them1. The network connectivity from the dock to laptop with USB-C loses connectivity on occasion. Also when the user shuts off the laptop, comes back and turns the laptop on, no network connectivity is re-established. The only way to fix this is to unplug the USB-C cable and plug it back in. Sometimes that will lock up windows and we have to do a hard shut down and start of the laptop. 2. Running the display out from the dock is not always reliable. The monitor will turn off randomly. To bypass this issue we have to just plug the monitor directly into the laptop. 4. Occasional random bluescreens with a stop  code DRIVER_VERIFIER_DMA_VIOLATION. This error is related to bad drivers.Are we missing something. Is there anything we have to set in the BIOS to resolve these problems? I've been reading up on this dock and a lot of people are having problems with this dock and carbon 6th gen laptops

Read other answers
RELEVANCY SCORE 72.4

I recently just bought the lg 38cb99-w - https://www.lg.com/us/business/commercial-display/products/desktop-monitors/lg-38CB99-W - to connect to my X1 Yoga Gen 3 laptop thinking that one USB-C port for power and display would be very convenient. However this monitor won't stay connected to my laptop.  Whenever I plug the monitor in Windows 10 plays it's "new connection sound", my screen goes black and a couple seconds later my screen is displayed on this 38" beauty. However every 15-30 seconds afterwards the display will flash black for a few seconds as my laptop disconnects and then reconnects. It doesn't matter if my laptop is open or closed, the constant disconnects occur (although when my laptop is closed the frequency drops to every few minutes).  Either way, it renders this monitor so frustrating that it's uselses and am figuring out which product I need to return.  Any advice or suggestions are recommended So far I have used lenovo vantage to upgrade all firmware. My buddy also plugged his Dell laptop into the monitor and had no issues whatsoever. So I'm leaning torwards this being a Lenovo issue and not LG. Thanks,  

Read other answers
RELEVANCY SCORE 67.2

Dear Lenovo Support and all others, I am posting this in hope that someone can help with my problem and also to share my unpleasant experience with a new Lenovo product. Lenovo Thinkpad X1 CarbonModel: 20A8A00VSGOS: Windows 7 Pro 64bitPurchase date: 27th February 2014Since the first day I purchased the system, I have been having an issue with my wireless connection:1. I am unable to reliably get a wireless connection to wireless access points (e.g. free wifi coffee outlets or malls) and personal mobile hotspots (mobile phone hotspots). It constantly says "LIMITED CONNECTIVITY". In other words, I cannot get internet access. Even when it does connect to the network and get internet access, there is a tendency for the connection to drop back to "LIMITED CONNECTIVITY". The only time I can get a reliable connection is when I am connected to my home wireless router. The system does not seem to have problems on home wifi networks. Since the problem seems limited to wireless access points and hotspots, I believe its a hardware/software problem.Please note that I have other  wireless devices (laptops and mobile phones) that can connect to the same networks that I am trying to connect to and have no issues.I have tested the networks with my friends' wireless devices as well and they have no issues accessing the internet so I am fairly certain that there is no issue with the networks themselves.2. I have already called in twice and been given advice on both occasions... Read more

A:X1 Carbon (20AX series) wifi connectivity issues

I'd look at the Norton AV, it has some firewall settings built in.  But that's just my $0.02.

Read other 9 answers
RELEVANCY SCORE 66.4

Hey, I have a HP Elite 90W Thunderbolt 3 Dock that works fine with the hp work laptop that I have and 3 monitors. I just bought a simple thunderbolt 3 cable to be able to plug my Lenovo T580 to this and enjoy the external monitors with it as well but... it doesn't seem to work. (I don't know if it's relevant, but my t580 runs linux) I did try to look around on the internet but couldn't seem to find anyone who tried to do this. So is it normal ? Or is it supposed to work ? If so, could the problem come from linux ? Thanks in advance if you have any idea !  Cheers

Read other answers
RELEVANCY SCORE 66.4

(For those of you who have followed my previous threads, I've now ordered a T580 with 4k display). I'm looking for a T3 dock which can do the following on a T580. It would allow me to use just one cable to dock/undock it: 1) Attach a screen with a 2560x1440 resolution with 60Hz (digital connection)2) Attach a screen with a 1920x1200 resolution with 60Hz (digital or VGA connection)3) Full Ethernet port4) Charge the laptop (originally, it comes with a 45W power adaptor)5) Have at least 1 classic USB 3.0 port Unfortunately my budget is limited so that I can't go for the original Lenovo one. If there's a dock which can all the above except for attaching two screens, then this would be ok as well, for the time being (assuming I can run one screen via the dock, and the other screen directly from the HDMI of the T580). Then it would just be 2 cables for docking/undocking...  

Read other answers
RELEVANCY SCORE 66.4

I have a new T580 laptop that has stopped recognizing devices plugged into the Thunderbolt port. I've tried to update the firmware from https://pcsupport.lenovo.com/us/en/solutions/HT508988, but the page shows the firmware update as "pending." How can I get it going again? Here's the info from the Thunderbolt application: Thunderbolt SoftwareSoftware package version: 17.4.78.500Application version: 17.4.78.15Service version: 17.4.78.14Controller driver version: 17.4.78.21Networking driver version: Unknown Thunderbolt ControllerThunderbolt generation: Thunderbolt 3 (15BF)Number of ports: 1Security level: User Authorization (SL 1)NVM Firmware version: 18.00External GPUs supported: Yes By the way, when I plug the same Thunderbolt into the USB-C power port, everything loads fine. So the problem seems to be with the Thunderbolt port. Thanks!

Read other answers
RELEVANCY SCORE 66.4

My thunderbolt 3 (135watt) dock will not charge my T580 intel core i7-8650 laptop while displaying on 2 monitors.  Tried only 1 monitor and still won't charge.  About 3 months ago first got a message that insufficient power to thunderbolt dock.  Warranty replaced the dock last week and still won't work.  I took the laptop to work since I have an identical rig and it charges and displays (only 1 monitor but will also charge an iphone).  I brought a new 135w charger home and that didnt help.  Also replaced little cord from thunderbolt to T580 and that didn't work.  I even tried a different outlet on a different circuit and that doesn't help.  Could it be that the i7-8650 needs the 230W thunderbolt?

Read other answers
RELEVANCY SCORE 66

Hi!I just got a new "X1 Carbon 5th Gen - Kabylake (Type 20HR, 20HQ)" and a "X1 Carbon Thunderbolt 3 Dock". I have an external screen connected to the dock and it works fine (VGA connection). I also have an other monitor with display (DP) connection that I want to use. But my computer can't find the other monitor, only the one with VGA connection. Is there any easy ways to fix this problem?Best regards

A:ThinkPad X1 Carbon 5th gen can't connect 2 external monitors in X1 Carbon Thunderbolt 3 Dock

[Posted moved and topic edited for discoverability.  AG]

Read other 1 answers
RELEVANCY SCORE 66

Hi all, I have a Thinkpad T580 and a Thunderbolt 3 Dock Gen2. It worked fine until now.I updated the Dock Firmware, and everything worked. I updated the BIOS from 1.21 to 1.22, and Thunderbolt is not working anymore. Were I work we have many Lenovo Laptops and Docks. I tried another Dock, but the thunderbolt software does not show a connected device. I reflashed the 1.21 BIOS version, but thunderbolt stays broken. How could that happen?I even set the Thunderbolt Security to "no Security" in BIOS, thinking it might have broke security, but no, does not work. When I plug it into USB-C it works, of course. But this way I only have 10GBit/s for everything, not 40Gbit/s like with Thunderbolt. That means not all of my monitors do work and bandwidth is limited. Any ideas how to remedy the situation? Best, maybeapreacher

Read other answers
RELEVANCY SCORE 64.4

Hi All,What is the best to run two 3840 x 1600 minitors (LG 38UC99-W http://www.lg.com/us/monitors/lg-38UC99-W-ultrawide-monitor) via a T580 (or T570) via thunderbolt 3 connection? Do I have to buy a dock/port?Many thanks

Read other answers
RELEVANCY SCORE 64.4

I would like to update the thunderbolt firmware on my Lenovo Thinkpad T580. However the Firmware Update tool tels me "Firmware file (*.bin) not found in folder". I ran the update through Vantage and though the pcsupport download link.I follow the steps in the readme, admin account and all that, but with the same result.When I click next and ignore the file not found warning I get the following error:  Error: 0x207 SDK_FILE_NOT_FOUND File does not exist.

A:Thunderbolt Firmware update on T580 not working - SDK FILE NOT FOUND

Please do these steps:
1.  open a command prompt as administrator
2.  cd \fw\win\thunderbolt
3.  detect.exe
4.  post screenshot of the output here.  It should look something like this.
 

Read other 1 answers
RELEVANCY SCORE 63.6

Ok.. I'll try to keep this breif. I bought this laptop SPECIFICALLY for the capability to run 2 external monitors via Thunderbolt 3. I have spent thousands of dollars on the laptop, monitors, and cables and put hours of research into making sure everything was compatible and it won't work.  My setup is as follows: Thinkpad T580 with TB3 portTB3 to Dual DisplayPort Adapter(x2)Monitors are both 32" Samsung 1080P monitors at 60hz (NOT 4k) Here's what I have done: Updated display drivers directly from Intel(newer than Lenovo provides)Updated BIOSUpdated FirmwareBought MULTIPLE adapters thinking it was possible an adapter problem.Bought MULTIPLE cables thinking it could be a cable problemI called Lenovo tech support and, after 10 minutes of convincing the tech that my laptop even has a TB3 port he obviously was unable to resolve it so I was mailed a new motherboard and a tech came to my house and swapped the board out. Same issue.  The laptop detects only ONE monitor at a time. If I plug them both in to the displayport adapter, one of them will work, the other will say it's not connected. If I unplug the monitor that is on, the previously undetected monitor will immediately be detected and turn on.  If I plug the undetected monitor into the HDMI slot it will detect and output. But this is NOT the functionality that I have spent thousands of dollars for.   I am out of ideas and now quite sure that, even though the marketin... Read more

Read other answers
RELEVANCY SCORE 60.4

I bought this Inspiron N5010 in its current hobbled condition. The laptop will not power on with battery inserted, simply no response to the power button. Only with battery removed and connected to mains with power adapter will the laptop power on. Only one of the three front lights will illuminate, namely, the hard drive light (white). Neither the Power light nor the Battery light will ever illuminate. After the laptop is booted up with mains power, the battery can be inserted, and then the mains removed. The battery will charge if the mains is left inserted. Running on battery power only, the laptop can be restarted, but if I shut down the laptop and wait over 20 seconds to power on again, it will not power on, and I must remove battery, connect mains to power it on again, that is, it reverts to the original error condition.
I replaced the I/O Board located in the back right corner. This did not fix anything. The I/O Board has a small wireless card on it DW 1501. I tried to install the Dell driver for this device, but no hardware was detected. Same detection failure for wired ethernet which also resides on this I/O board. No network has ever been detected.
The motherboard is DP/N 0Y6Y56. I am aware of at least three different mobos for this laptop, Y6Y56, 52F31, and BR0GW. It's common knowledge that the graphics chip has issues, due to poor solders and/or heating from heavy graphics. I was advised to buy the board with the ATI graphics chip. Then I learned I apparently... Read more

Read other answers
RELEVANCY SCORE 59.6

I've been investigating an issue that my laptop has when going into sleep mode while connected to certain public networks and access points. After coming out of sleep when connected to these networks, all my network adapters will remain in an "off" state (media disconnected status in ipconfig /all), that takes forever to force it out of (I still don't have a clear remedy, it just seems to finally turn back on after multiple power cycles and airplane mode toggles).As best as I can tell, it's likely a PSP issue with the ac8625 wifi card as described here: https://www.intel.com/content/www/us/en/support/articles/000005645/network-and-i-o/wireless-networki...However, for some reason my X1 Carbon 6th Gen laptop doesn't have ANY of the common window10 power management options available... I don't have a power management tab in the adapter's properties page: I dont' have any wireless adapter power control options in the advanced power settings control panel: And I can't access any of the advanced settings in the Intel ProSet tool. Is this something Lenovo purposefully disabled?? I've never seen a computer set up to exclude all the important advanced power management features. I've gone into the messy lenovo advantage to turn off the weird airplane power saving feature, but I can't find any other way to re-enable power controls so I can adjust the PSP power settings for this adapter. Not having wifi/internet on a laptop for a SaaS company while on the road is... Read more

Read other answers
RELEVANCY SCORE 58.4

I've read in this post that Thinkpad T580 supports USB Power Delivery in both it's USB-C ports. Does this mean that the AC power adapter is also comaptible with USB PD? Can I use it to hcarge other USB PD devices?

Read other answers
RELEVANCY SCORE 57.6

Hello all, I have a 6th gen X1 Carbon that I've been using a Caldigit TS3 Plus with. I took my laptop on a trip and when I come back, I can't see the speakers plugged into the dock. It has shown as Caldigit prior to this, but now nothing. Also, in the Windows start logo box, Thunderbolt software is not listed. If I recall, it said Thunderbolt software (or something similar) before. When I tried downloading TB software and firmware from the Lenovo site, it said it was already there. Something similar happened once before, and I don't remember how I resolved it. Thoughts? Thanks

Read other answers
RELEVANCY SCORE 57.6

So I have an X1 Carbon Gen 5 (Kaby Lake) and the Thunderbolt 3 Dock Gen 1 (40AC0135US). I bought two 4k monitors and after several frustrating hours figured out that the Gen 1 dock can't output 4k on two externail monitors at 60hz, this appears to be a dock limitaion only. I see that you now have a Gen 2 dock (40AN0135US) that says it will do 2x 4k @ 60hz, only problem is that every compatability cross refrence I can find does not say the gen 5 X1 Carbon supports this new dock. I don't see a good reason for it not to be compatiable, but wanted to find out for sure one way or the other before I bought it, as it is not cheap. 

Read other answers
RELEVANCY SCORE 56.8

Just got purchased the x1 carbon 5th gen along with the Thunderbolt 3 dock.  However, the dock will not charge the laptop.  Every time I get the error message "The dock is not supplying enough power to your computer.  Please use the ac power adapter that came with the dock".  I am, in fact, using the ac adapter that came with the docking station.  I have updated the bios as well as all of the other recommended updates and still get the same error message.  Does anyone have a solution?

Read other answers
RELEVANCY SCORE 56.8

Hello, I'm trying to connect two external monitors (1920x1200) to my X1 Carbon 6th and only one of them actually works. The other one is displayed as a small square in Windows display settings. When I checked "Advanced display settings", I see all display adapters (3 total), but one of them shows up as "Display 3 isn't active.". I'm using a Thunderbolt 3 to dual displayport adapter (this one). Can anyone help me with this issue? Thanks!

Read other answers
RELEVANCY SCORE 56.8

Hello,  I have the X1 Carbon (5th gen) and am looking at purchasing an ultrawide 5k monitor. I then realized, my setup may not support a monitor above 4k. I have the Thunderbolt 3 workstation dock, and know the user manual says I can run a 4k monitor. So does this mean I would not be able to run a 5120x2160 ultra wide? Thanks!

Read other answers
RELEVANCY SCORE 56.8

Hey,  Hopefully someone can help.  I am using an X1 Carbon 6th Gen plugged into a Thunderbolt dock using two external displays.  When I plug in the dock, I find that my Microsoft programs are blurring. If I close and restart the programs they are fine.  Any advice? 

Read other answers
RELEVANCY SCORE 56.8

I've been using a USB 3.0 Pro dock with my Carbon X1 5th gen. I wanted to updgrade my external monitor to an ultrawide - so I bought a Thunderbolt 3 dock. The dock will charge my laptop, but nothing plugged into it is detected, nor does it show up in device manager or in the Thunderbolt Software. I did install the drivers for the dock. I then tried a USB-C dock to see if I had different results - same problem. The dock doesn't show up in device manager, nothing plugged into it is detected. The dock does charge my laptop.  Any ideas what I can try to troubleshoot this? 

Read other answers
RELEVANCY SCORE 56.8

The X1 carbon 6th Gen supports Thunderbolt 3, yet it is not listed as compatible with the Thunderbolt 3 Dock Gen 2. Anyone have an idea why? Also the ThinkPad T470s.
 
https://support.lenovo.com/us/en/solutions/pd500265
 
The X1 Yoga 3rd Gen and X1 Yoga 2nd Gen are listed as compatible. Perhaps it just means that the dock has been specifically tested with the listed models? Surely Thunderbolt 3 is Thunderbolt 3 and the dock should work with plenty of other Thunderbolt 3 machines?

Read other answers
RELEVANCY SCORE 56.8

Hi, all. I have a problem thunderbolt is not charge notebook, but usb ports and displayport working.1. I connect the Laptop with the Thunderbolt connector on the backside of the Dock (beside the HDMI/DP connectors) and on the frontside, not working.2. I updated all drivers.3. I go into the BIOS and "disable the battery for technical service".But if I use an AC power adapter, it charges.Does anyone have a solution?

Read other answers
RELEVANCY SCORE 56.8

I recently purchased the X1 CRBON 5TH Gen (2017)...type 20HR plus a thunderbolt dock.I connected them together with a Dell 28" 4K (@30Hz) screen (p2815q) connected through DisplayPort from the dock, plus a Microsoft keyboard and Jabra 510 USB speakerphone.Using the Windows 10 stock image from Lenovo, plus Office 2016, Chrome, Visual Studio, Skype,  and various other apps (putty, RDP, SAP GUI, others) the video performance was atrociously bad. Alt-Tab, which I use heavily would take 3-4 seconds to respond, switching between applications, Windows would freeze and sometimes crash, I would often get blank or black windows in Chrome and Office. This was on the embedded Thinkpad screen as well as the external monitor.I ensured Windows Update was up to date, as well as Bios, Drivers etc through the Lenovo companion app. So...I dove into the BIOS and voila! There is a switch that lets me change the Video memory from 256 to 512 MB allocated!I went to change it, and it would not change until I changed the setting:BIOS > Config > Thunderbolt 3 > Security Level = from "User Authority" to "DisplayPort and USB"I switched that setting, and then set my video memory to 512 MB, rebooted and voila! Problem solved. I worked that way for a little while, took it into my office and plugged it back into my Thunderbolt 3 dock and while my video and LAN connections worked...my wireless keyboard (USB dongle), and Jabra 510 did not. Curious. I r... Read more

Read other answers
RELEVANCY SCORE 56

I have been using this laptop with the Thinkpad TB3 Dock successfully for over a year and a half. Recently, when the laptop sits connected to the dock at idle (no user interaction) after 4-5 minutes, CPU Utilization drops to a fixed 7% at 0.19 Ghz - you can see the CPU utilization graph go to flat line in the Task Manager. At this point, a user interaction will interrup this state, but it will take 15-45 seconds to get back to a usable UI. Mouse cursor moves fine, but interacting with any window is laggy/non-existent until the CPU speed ramps back up. This condition happens ONLY when docked to a TB3 dock. It does not happen on battery, and it does not happen when plugged in to a power adapter. I have tested multiple Thinkpad TB3 docks with same behavior. I have purchased a new CalDigit TS3 Plus dock with same behavior. I have changed among 3-4 different TB3 cables. It happens whether all my peripherals are plugged in to the dock or none of them. I am on the latest build of Windows 10 (1809, installed today - 1803 installed until today). Same behavior.I have updated the dock firmware, the Thunderbolt software, everything Thunderbolt related I can find, including rolling back to previous drivers. I have manually gone through the entire list of drivers at https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-x-series-laptops/thinkpad-... and installed the latest versions of every driver. I'm at a loss so looking here for any suggestions of... Read more

Read other answers
RELEVANCY SCORE 56

I have installed the drivers and rebooted, but it still does not show up.  The docking station is a 40AC0135US which was indicated as the correct docking station by Lenovo's docking station finder.    I have no idea how they have managed to make this so difficult.   

Read other answers
RELEVANCY SCORE 56

Hello everybody, We have purchased the X1 Carbon 5th Gen Laptop, which by the way is a great piece of hardware, with Thunderbolt 3 dock.  The problem: the laptop does not recognize the dock. other laptop (identical with the problematic one, works perfectly... Any sugestions?













Solved!

Go to Solution.

A:X1 Carbon 5th Generation problem with Thunderbolt 3 dock

There are BIOS settings related to Thunderbolt (in the "Config" menu of BIOS setup), are these settings configured identically on both ThinkPads?  As an experiment, try setting the security level to "No Security" and see if you can get it working that way...
 
Same BIOS version on both ThinkPads?

Read other 3 answers
RELEVANCY SCORE 56

I have installed the drivers and rebooted, but it still does not show up.  The docking station is a 40AC0135US which was indicated as the correct docking station by Lenovo's docking station finder.    I have no idea how they have managed to make this so difficult.   

Read other answers
RELEVANCY SCORE 56

Hi All,  I recently got two 1920x1080 monitors and have been attempting to hook them up to my Thunderbolt 3 dock and X1 Carbon with no success. All firmware has been updated, and the dock detects each display individually, when the other is disconnected and reconnected. Everything else works on the dock with no issues.  Thanks.

Read other answers
RELEVANCY SCORE 56

I received my X1 Carbon 5th Gen just a few weeks ago. Today, a thunderbolt 3 port next to an LED suddenly died and seems to no longer accept any devices. I tried 4K monitor and some other USB devices thourgh a USB type C hub connected to the port, but nothing worked. I tried with Windows 10 and Ubuntu 17.04, the port no longer works with any operating systems. Interestingly, Windows 10 now thinks it's connected to AC power even when nothing is actually connected to the Thunderbolt 3 ports. Therefore I strongly suspect this is a hardware issue. Does anyone have a similar problem?

Read other answers
RELEVANCY SCORE 56

I use a kensington thunderbolt dock (SD5200T) for power, display, ethernet and USB. With the provided 0.5m passive cable it's fine, but I'm having problems with both 2m active cables that I've tried. With the 2m active cables, they either drop in and out every few seconds or they work for 15-30 minutes then drop out completely. The power connection seems to continue working throughout, it's the display, USB etc. that drops out. I wonder if it is either the X1 or dock port overheating because the connectors get very hot (I think they have a chip in each end). Is there any diagnostic information I can dig out to help work out the problem? It may be a problem with the dock rather than the X1 of course. The two cables I have tried were from CalDigit and CableMatters. I've updated the thunderbolt bios and software to the latest. There isn't yet a bios update for the kensington but I'm keeping my eyes open for it. 

Read other answers
RELEVANCY SCORE 56

I have a 5th gen Carbon connected to the Lenovo Thunderbolt docking station. After some time, perhaps a sleep or hibernation, the laptop loses ethernet connectivity and can only use wifi. ipconfig reports media disconnected. But if I do a restart of Windows 10, ethernet is back, no problems. Also if I use the ethernet dongle connected to the laptop's weird little ethernet port, there are no issues.  There are other issues with the dock, like intermittent loss of wireless keyboard and mouse connectivity, but I'll worry about those in another thread. 

Read other answers
RELEVANCY SCORE 56

Hi all Recently got a Lenovo X1 Carbon (gen 6) and today got a Lenovo Thunderbolt 3 dock, part number 40AC0135AU . I have two 1080p monitors plugged into the dock, however, when the laptop is plugged in via the single TB3 cable, the laptop's fans constantly spin-up loudly for about 10 seconds, then turn off. It repeats this constantly. I have run all Windows Updates (on 1903), Lenovo Vantage updates, and updated all firmware and drivers (that I know of), but it's still doing it. Has anyone got any experience with this, as I can't focus on work with the fans constantly interrupting I don't want to send the laptop and dock back, but it's not suiting my requirements as is. Appreciate any assistance!

Read other answers
RELEVANCY SCORE 56

Hello everybody, We have purchased the X1 Carbon 5th Gen Laptop, which by the way is a great piece of hardware, with Thunderbolt 3 dock.  The problem: the laptop does not recognize the dock. other laptop (identical with the problematic one, works perfectly... Any sugestions?

Read other answers
RELEVANCY SCORE 56

My Thunderbolt controller keeps crashing and prevents me from being able to use my USB-C dock (it still charges, but no USB/displays).    To restore functionality, I have to shutdown, hold the power button for 10s, then boot up, but that's only a temporary fix.  The controller inevitably crashes within minutes/hours of booting up and I have to repeat the steps.  Sometimes my external displays continue to work after the Thunderbolt controller crash error comes up, but if I undock/redock they don't work.  I've updated my BIOS (N1MET52W), Thunderbolt driver (17.4.78.500), Thunderbolt controller FW (N1MTF25W), and USB-C Dock FW (3.7) to the latest available, but nothing has helped.  Sometimes the problem will go away for a few days then come back.  Has anyone run into this?Thanks!

Read other answers
RELEVANCY SCORE 56

We have a number of 6th Gen X1 Carbon laptops which are experiencing an issue reconnecting to the Thunderbolt 3 dock. When a user disconnects and walks off to a meeting and then returns and reconnects, their laptop does not recognise the dock any longer. It is intermittent and we have tried options such as setting the Thunderbolt service to automatic and setting recovery options to restart the service.

Read other answers
RELEVANCY SCORE 56

Machine: X1 Carbon 6th Gen, Windows 10 Home 64 bitEverything is up to date through Lenovo Vantage / Windows Update Issue 1: HDMI port is not working, no output detected on any monitor. Same HDMI cable / monitor using a different laptop works just fine.I did everything here already : https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X1-Carbon-6th-gen-HDMI-not-working/td-p/40915... Issue 2: Thunderbolt 3 is not detected in Device Manager under System.Tried everything here already: https://forums.lenovo.com/t5/ThinkPad-X-Series-Laptops/X1-Carbon-6th-gen-BIOS-update-broke-external-... In summary I've tried pressing the little button on the bottom the laptop, toggling Thunderbolt BIOS assist, and reinstalling the Thunderbolt drivers but those have not resolved the issue. Any other suggestions I should try?

Read other answers
RELEVANCY SCORE 56

How to reproduce:1. Remove charger and close the lid.2. Power up.Note: the Windows 10 Fast Startup feature should be disable for reproducing this issue robustly. Issue:1. Windows 10 boots very slow.2. After boot, Windows 10 will detects two ejectable device: Base System Device and USB Root Hub 3.0.3. If reboot, it will freeze at the Lenovo logo. Environment:1. Thinpad X1 Carbon 2017 [20HR000FUS]2. BIOS Version: N1MET31W (1.16)3. Windows 10 Pro 1703 x64 There are several ways to fix it:1. Disable Thunderbolt in [BIOS]-[Security]-[I/O Port Access].2. Hibernate and recover, everything will fine.3. If Windows 10 Fast Startup feature is enabled, manual power off and power up again without closing the lid may fix it. 

Read other answers