What can I help you with?
NVIDIA ConnectX-6 Adapter Cards Firmware Release Notes v20.39.5050 LTS

Bug Fixes History

Note

This section includes history of bug fixes of 3 major releases back. For older releases history, please refer to the relevant firmware versions Release Notes in https://docs.mellanox.com/category/adapterfw.

Internal Ref.

Issue

4152704

Description: Fixed an issue that resulted in firmware assertion 0x889f with CQ reference counter underflow.

Keywords: Firmware assertion 0x889f

Discovered in Version: 20.39.3560

Fixed in Release: 20.39.4082

4000741 / 3611679

Description: Fixed an issue that resulted in RX traffic halt upon a sudden failure on the host.

In this case, the following log message is presented: "DETACH_FROM_MCG(0×807) timeout. Will cause a leak of a command resource / wait_func_handle_exec_timeout:1064:(pid 123313): cmd4: 2ERR_QP(0×507) No done completion”.

Keywords: RX traffic

Discovered in Version: 20.39.3560

Fixed in Release: 20.39.4082

4149510

Description: Fixed an issue that resulted in setup crash when create_sq used invalid mbox. Now the invalid mbox is replaced with a valid DB.

Keywords: mbox

Discovered in Version: 20.39.3560

Fixed in Release: 20.39.4082

4149393

Description: Added address validation in MLNX OEM CMD 0x0032 (get debug info) to be 4-bytes aligned.

Keywords: Address validation, 0x0032

Discovered in Version: 20.39.3560

Fixed in Release: 20.39.4082

4148357

Description: Fixed the MPLS packets discards flow when the GLOBAL pause capability is disabled.

Keywords: Global Pause

Discovered in Version: 20.39.3560

Fixed in Release: 20.39.4082

Internal Ref.

Issue

3887760

Description: Fixed an issue that caused Completion Timeout to mistakenly be treated as Advisory Non-Fatal error. Now Completion Timeout is treated as uncorrectable error.

Keywords: Completion Timeout, Advisory Non-Fatal error

Discovered in Version: 20.39.2048

Fixed in Release: 20.39.3560

Internal Ref.

Issue

3669258

Description: Fixed a rare issue that prevented changes in mlxconfig from taking effect upon warm reboot.

Keywords: mlxconfig

Discovered in Version: 20.38.1900

Fixed in Release: 20.39.2048

3668253

Description: Removed the unmapped module in the INI to prevent firmware assert due to invalid local port (0x7f unmapped).

Keywords: INI, firmware assert

Discovered in Version: 20.38.1900

Fixed in Release: 20.39.2048

Internal Ref.

Issue

3376815

Description: Fixed an issue that caused Completion Timeout to mistakenly be treated as Advisory Non-Fatal error. Now Completion Timeout is treated as uncorrectable error.

Keywords: Completion Timeout, Advisory Non-Fatal error

Discovered in Version: 20.38.1002

Fixed in Release: 20.39.1002

3605363

Description: Get Temperature OEM command now always returns a unified temperature.

Keywords: Temperature

Discovered in Version: 20.38.1002

Fixed in Release: 20.39.1002

Internal Ref.

Issue

3365411

Description: Fixed a link failure that occurred due to a wrong 'is_inphi_cable' indication.

Keywords: Link failure

Discovered in Version: 20.37.1014

Fixed in Release: 20.38.1002

3331179

Description: Improved token calculation.

Keywords: Token calculation

Discovered in Version: 20.37.1014

Fixed in Release: 20.38.1002

3491841

Description: Fixed a firmware assert that occurred when tried to verify if the module supported "swap".

Keywords: Firmware assert

Discovered in Version: 20.37.1014

Fixed in Release: 20.38.1002

Internal Ref.

Issue

3233061

Description: Updated the link maintenance flow to avoid high uncorrectable error rate.

Keywords: Error rate

Discovered in Version: 20.31.2354

Fixed in Release: 20.37.1014

© Copyright 2025, NVIDIA. Last updated on Jun 30, 2025.