Bug not solved, even in latest firmware which entered unstable. See here
pink@debian-surface-go:~$ apt show firmware-atheros Package: firmware-atheros Version: 20190114-1 ... APT-Sources: http://deb.debian.org/debian unstable/non-free amd64 Packages ... and here pink@debian-surface-go:~$ sudo journalctl | grep ath10k [sudo] Passwort für pink: Jan 20 13:30:49 debian-surface-go kernel: ath10k_pci 0000:01:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0 Jan 20 13:30:49 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 20 13:30:49 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: failed to load ath10k/cal-pci-0000:01:00.0.bin (-2) Jan 20 13:30:49 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: direct-loading firmware ath10k/QCA6174/hw3.0/firmware-6.bin Jan 20 13:30:49 debian-surface-go kernel: ath10k_pci 0000:01:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff sub 168c:3370 Jan 20 13:30:49 debian-surface-go kernel: ath10k_pci 0000:01:00.0: kconfig debug 0 debugfs 0 tracing 0 dfs 0 testmode 0 Jan 20 13:30:49 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 20 13:30:49 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: direct-loading firmware ath10k/QCA6174/hw3.0/board-2.bin Jan 20 13:30:49 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 20 13:30:49 debian-surface-go kernel: ath10k_pci 0000:01:00.0: firmware: direct-loading firmware ath10k/QCA6174/hw3.0/board.bin Jan 20 13:30:49 debian-surface-go kernel: ath10k_pci 0000:01:00.0: board_file api 1 bmi_id N/A crc32 ed5f849a Jan 20 13:30:50 debian-surface-go kernel: ath10k_pci 0000:01:00.0: Unknown eventid: 118809 Jan 20 13:30:53 debian-surface-go kernel: ath10k_pci 0000:01:00.0: failed to ping firmware: -110 Jan 20 13:30:53 debian-surface-go kernel: ath10k_pci 0000:01:00.0: failed to reset rx filter: -110 Jan 20 13:30:53 debian-surface-go kernel: ath10k_pci 0000:01:00.0: could not init core (-110) Jan 20 13:30:53 debian-surface-go kernel: ath10k_pci 0000:01:00.0: could not probe fw (-110)
