The is the open-source driver for Qualcomm Atheros 802.11ac wireless chips (such as the QCA6174 or QCA988x). The cal-pci and pre-cal-pci files are calibration binaries used to fine-tune the radio's performance based on the specific hardware implementation.
The error message typically appears during the installation or boot of Linux distributions like Debian, Ubuntu, or Kali. It indicates that the system is searching for a specific calibration file for your Qualcomm Atheros wireless card but cannot find it.
While seeing a "failed to load" message in your logs can be alarming, these files are often and do not exist in standard firmware repositories. What is ath10k/cal-pci?
Connectivity
15 Minutesto BKC via BKC Connector
30 Minutesto Andheri via Mumbai Metro
30 Minutesto International Airport via Mumbai Metro
25 Minutesto Domestic Airport via SCLR
25 Minutesto Worli via Sea Link
30 Minutesto Mahalaxmi Racecourse via Monorail
35 Minutesto Thane via Eastern Express Highway
25 Minutesto Vashi via Sion Panvel Highway