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19 Posts

03-09-2021

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-12, 15:25 PM

 

For those like my company that are still having problems with disconnects or crashes on the Dock's networking port, do not despair.

 

Yesterday my boss and I had a video conference call with two of Lenovo's engineers - one of them a "hardware guy" while the other seems to be more customer-facing. They seemed genuine and were forthcoming about the problem. They can replicate it and they share crash dumps and info with Realtek engineers often. There are apparently multiple teams from both companies working on this. They have emailing lists and cross-team meetings one or twice per week. So there seems to be good communication happening - it was one of the things my boss specifically asked about.

 

Their managers are aware of these issues and they are tracked within both companies - at least that was my take-away from the meeting.

 

Unfortunately, there is no timeline for when this problem will finally be fixed. They are apparently testing various beta drivers trying to see if they can fix it without breaking anything else along the way. They are digging into multiple crash dumps and tracing logs.

 

It is easier to Lenovo to replicate the problem than for Realtek - so I suggested that Lenovo should box up some hardware that demo's the problem and ship it to Realtek. Perhaps they will pass that idea along.

 

They did say that as soon as they have new drivers that pass their internal testing they would share them with my company to test.

 

In the meantime I've been researching and pricing other universal docks. Also some docks from Dell. I've contacted Dell's sales support about what chip they use for networking (I didn't tip my hand, but I'm hoping the reply is NOT Realtek) and  they are suppose to email me back.

 

My company will need to start purchasing new equipment soon and we can't continue to wait for Lenovo/Realtek to fix this issue.

 

I did mischievously ask during the conference call if Lenovo had considered designing future hardware WITHOUT Realtek chips. They laughed and said that decision was WAY above their pay-grade. I knew that, but I just had to ask!

 

 

 

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2 Posts

05-12-2021

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-12, 17:53 PM

Multiple devices and many more people coming back into work make this a priority issue.

Bypassing the network port keeps things happy, but defeats the purpose of the dock.

Also Yoga's need another network dongle or use Wi-Fi (no thanks).

 

T580's , T15 Gen1's, multiple Yoga's having issues.

No dock firmware upgrade seems to work, and the micro stalls which make the machine fall off the network is unacceptable.

 

 

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3 Posts

04-21-2021

Canada

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-12, 18:14 PM

Thank you for the update ! 

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4 Posts

05-06-2021

Germany

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-12, 20:32 PM

FYI

my boss is using Surface Book 2017 with a Surface Dock and ist has a Realtek chip and the same drivers and same issues.

 

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8 Posts

03-23-2021

United States of America

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-13, 16:55 PM

We are more than 48 hours into our testing without any further issues since making the Priority & VLAN setting change.

 

Chad

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2 Posts

05-12-2021

United States of America

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-13, 18:23 PM
What prompted you to look at that setting and change it? Looks like a return to work plan is on for my company in July so I have some testing to do.
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8 Posts

03-23-2021

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-13, 18:27 PM

I cannot take credit for the find. DRomano over in the Spiceworks Community Forum suggested it. FYI, while the affected systems and reported symptoms are different, I believe the SpiceWorks forum and this Lenovo forum are tracking the same underlying issue...The Realtek Ethernet chipset.https://community.spiceworks.com/topic/2274486-microsoft-teams-call-drops-ethernet-while-connected-to-surface-dock?page=6#entry-9172218

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19 Posts

03-09-2021

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-19, 15:57 PM

I tried toggling off that Priority & VLAN setting and it seemed to work. No "mini" disconnects. Then I toggled it back on to see if the problems came back - and they didn't. So then I started considering what else I'd done that might have caused this "cure". And it turned out I had recently flashed the dock to the latest 1.0.8 Firmware (this is the Dock Gen 2 (Type 40AS)).

 

I'd pulled two of these docks out of storage and flashed them, and for hours of testing with video calls and general usage they were rock solid without a single crash in the event logs. And then I came back the next day and the log was full of disconnects - even when the system had no users logged in.

 

The T15 laptop I was using was on the latest 10.44.xx drivers. I'd previously tested with a different T15 that had the 10.45.xx drivers manually installed and the only time I had a dock run stable for a few hours was when I'd flashed that dock up to 1.0.8 - that was a Friday and when I came back in Monday for more testing the crashes were back.

 

The next step would be to try and flash one of these docks back to 1.0.6 firmware and then back to 1.0.8 and see if it stabilizes again for another few hours. I've reported this to the Lenovo engineer that has my open case.

 

So my latest theory as to the cause of the problem is that the firmware code that runs the port has some issue that only kicks-in after a few hours. I've tried power cycling the dock to see if this would temporarily return it to a "pristine" working state, but it didn't. This suggests that it is something like a memory/resource leak, a counter overflow in a processor register, or there is some periodic maintenance code that it corrupting the working state. Maybe I need to try power cycling the dock with all cables disconnected to insure it isn't leaching power from somewhere and helping it sustain the corrupted state.

 

 

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3 Posts

05-12-2021

United Kingdom of Great Britain and Northern Ireland

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-19, 16:08 PM

I have a ticket open for this as well, is anyone getting run around the houses with this, we have this issue on at least 9 machines that have been reported as having issues

 

LENOVO_MT_20KS_BU_Think_FM_ThinkPad E580

LENOVO_MT_20KS_BU_Think_FM_ThinkPad E580

LENOVO_MT_20J1_BU_Think_FM_ThinkPad 13 2nd Gen

LENOVO_MT_20J1_BU_Think_FM_ThinkPad 13 2nd Gen

LENOVO_MT_20KS_BU_Think_FM_ThinkPad E580

LENOVO_MT_20N6_BU_Think_FM_ThinkPad P53s

LENOVO_MT_20UH_BU_Think_FM_ThinkPad T14s Gen 1

LENOVO_MT_20RD_BU_SMB_FM_ThinkPad E15

LENOVO_MT_20S0_BU_Think_FM_ThinkPad T14 Gen 1

 

We reverted the driver back to 10.39.518.2020 and that is stable.

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2 Posts

05-03-2021

United States of America

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Re:rtump64x64.sys bluescreen on X1 Yoga Gen 4 attached to ThinkPad Thunderbolt 3 Dock - Type 40AC

2021-05-19, 16:18 PM

Update: 5/18/2021. I had BSOD with 10.45 driver. I disabled the Lenovo USB Ethernet adapter late last week (5/20/21) and have been running on Wi-Fi exclusively. NO BSOD with this configuration. I read CoolComputerGuy's post about disabling the Lenovo USB Adapter Priority & VLAN (Device Maanger --> Lenovo USB Ethernet Properties --> Advanced --> Priority & VLAN --> Priority & VLAN Disabled). I have performed this setting change and have RE-enabled my adapter (confirmed I'm still running 10.45).

 

I'll run with this config now for the balance of this week.

 

Praying no BSOD's.

 

Thanks all for the continued updates on each of your situations.

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