Unable to start wifi in Hotspot mode

I am trying to enable hotspot on my laptop. and it’s failing…

$ iw list
Supported RX frame types:
* IBSS: 0x40 0xb0 0xc0 0xd0
* managed: 0x40 0xd0
* AP: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* AP/VLAN: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* mesh point: 0xb0 0xc0 0xd0
* P2P-client: 0x40 0xd0
* P2P-GO: 0x00 0x20 0x40 0xa0 0xb0 0xc0 0xd0
* P2P-device: 0x40 0xd0

Also when trying to enable the interface

$ sudo iwconfig wlp3s0 mode master
Error for wireless request “Set Mode” (8B06) :
SET failed on device wlp3s0 ; Invalid argument.

Drivers seem to also be correct

$ ethtool -i wlp3s0
driver: iwlwifi
version: 4.15.0-30-generic
firmware-version: build 25532
bus-info: 0000:03:00.0
supports-statistics: yes
supports-test: no
supports-eeprom-access: no
supports-register-dump: no
supports-priv-flags: no

List the interface details:

$ sudo lshw -C network
description: Wireless interface
product: Centrino Ultimate-N 6300
vendor: Intel Corporation
physical id: 0
bus info: pci@0000:03:00.0
logical name: wlp3s0
version: 35
serial: 3c:a9:f4:25:5e:24
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-30-generic firmware= build 25532 latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: irq:29 memory:f7600000-f7601fff

I have even tried to use command line create_ap

$ sudo create_ap wlp3s0 wlp3s0 ubuntu-hotspot test
ERROR: Your adapter does not support AP (master) mode

Via the GUI everything configures correct without any issues I just can’t start it…

$ sudo nmcli con up ubuntu-hotspot
Error: Connection activation failed: No suitable device found for this connection.

Any advise or help will be great;y appreciated.

Many Thanks