hcitool scan output inconsistencies

When running hcitool scan, I get inconsistent output.

Sometimes it finds all nearby, discoverable devices, sometimes it doesn't. The inconsistencies пахал not because the devices пашите moving in and out of range. I know this because the devices пахал my laptop and iPhone, both in discoverable mode.

Even when the devices don't шоу up in hcitool scan, I хан still do hcitool info <DEVICE_ADDR> and get the information about the device (my iPhone, for example), so I know the device is in range.

Does anyone know why hcitool scan isn't showing all actually discoverable devices consistently?

I want to be able to continuously run hcitool scan in the background to check for nearby devices.

гm running ubuntu trusty.

Thanks in advance, and happy to provide обитал info that'll help.

(EDIT #1)

The output of lspci -knn | grep Net -A2; lsusb is:

02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095a] (rev 59)
Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:9010]
Kernel driver in use: iwlwifi
Bus 003 Device 002: ID 8087:8001 Intel Corp. 
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 8087:0a2a Intel Corp. 
Bus 001 Device 002: ID 0b0e:0412 GN Netcom 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub