6GHz AP association failure on WCN7850

Jun Nie
2024-03-01T09:14:57Z

Hi,

I see there is association failure many times when I try to connect my
6GHz AP with latest mainline Linux. Does anyone also observe it too?
Any newer firmware than WLAN.HMT.2.0-01734 is available? Or we
recommend any specific version firmware?

The issue only happens with this version firmware:
[ 9.441624] ath12k_pci 0000:01:00.0: Hardware name: wcn7850 hw2.0
[ 10.058822] ath12k_pci 0000:01:00.0: chip_id 0x2 chip_family 0x4
board_id 0x3d soc_id 0x40170200
[ 10.082876] ath12k_pci 0000:01:00.0: fw_version 0x200a06c6
fw_build_timestamp 2023-09-20 03:43 fw_build_id
QC_IMAGE_VERSION_STRING=WLAN.HMT.2.0-01734-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1

I do not see the issue with firmware:
[ 7.896737] ath12k_pci 0000:01:00.0: fw_version 0x1005bc12
fw_build_timestamp 2022-10-11 12:13 fw_build_id
QC_IMAGE_VERSION_STRING=WLAN.HMT.1.0-03427-QCAHMTSWPL_V1.0_V2.0_SILICONZ-1.15378.4

Detail log can be found at:
https://www.dropbox.com/scl/fi/jgn1zbnw44i1vypbjxl0v/ath12k-6GHz-association-fail-log.tgz?rlkey=pg2ifnzcttzimz7vaxb7tuc6w&dl=0

Jun