Output of "sudo journalctl | grep ath10k" after getting version 20190114-1 via packetmanager into Buster.
Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0 Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: failed to load ath10k/pre-cal-pci-0000:01:00.0.bin (-2) Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: failed to load ath10k/cal-pci-0000:01:00.0.bin (-2) Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: direct-loading firmware ath10k/QCA6174/hw3.0/firmware-6.bin Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff sub 168c:3370 Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 0 tracing 0 dfs 0 testmode 0 Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware ver RM.4.4.1.c2-00057-QCARMSWP-1 api 6 features wowlan,ignore-otp,no-4addr-pad,raw-mode crc32 e061250a Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: direct-loading firmware ath10k/QCA6174/hw3.0/board-2.bin Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: failed to fetch board data for bus=pci,vendor=168c,device=003e,subsystem-vendor=168c,subsystem-device=3370 from ath10k/QCA6174/hw3.0/board-2.bin Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: direct-loading firmware ath10k/QCA6174/hw3.0/board.bin Jan 21 16:59:19 debian-surface-go kernel: ath10k_pci 0000:01:00.0: board_file api 1 bmi_id N/A crc32 ed5f849a Jan 21 16:59:20 debian-surface-go kernel: ath10k_pci 0000:01:00.0: Unknown eventid: 118809 Jan 21 16:59:20 debian-surface-go kernel: ath10k_pci 0000:01:00.0: htt-ver 3.56 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1 Jan 21 16:59:20 debian-surface-go NetworkManager[466]: <info> [1548086360.8720] rfkill1: found Wi ... Version 12.0.0.722 of eeprom_ar6320_3p0_TX8_clpc.bin fixed the issue again. best regards
