#22237: Wireless radio not fully disabled on startup (TL-WA850re)
-------------------------+------------------------
Reporter: anm.nov | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone:
Component: base system | Version: Trunk
Keywords: |
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Wireless radio seems to be "somewhat enabled" on startup, when it should
be disabled ("option disabled 1" in /etc/config/wireless).
It wouldn't be much of a problem if not for a device in question - TL-
WA850RE is a small, fully closed device with no holes for air circulation.
Which means little more heat = noticeably less lifespan (provided you do
not wish to use wireless part, of course).
1) After startup (wireless disabled):
Wireless LED: off
Power consumption: about 1.6 W
iwinfo output:
{{{
root@OpenWrt:~# iwinfo
wlan0 ESSID: unknown
Access Point: 00:00:00:00:00:00
Mode: Client Channel: unknown (unknown)
Tx-Power: 20 dBm Link Quality: unknown/70
Signal: unknown Noise: unknown
Bit Rate: unknown
Encryption: unknown
Type: nl80211 HW Mode(s): 802.11bgn
Hardware: unknown [Generic MAC80211]
TX power offset: unknown
Frequency offset: unknown
Supports VAPs: yes PHY name: phy0
}}}
2) I've enabled wireless after that:
Wireless LED: on
Power consumption: about 1.6 W
iwinfo output:
{{{
root@OpenWrt:/etc/config# iwinfo
wlan0 ESSID: "OpenWrt"
Access Point: 14:CC:20:3F:30:9B
Mode: Master Channel: 11 (2.462 GHz)
Tx-Power: 19 dBm Link Quality: unknown/70
Signal: unknown Noise: -95 dBm
Bit Rate: unknown
Encryption: none
Type: nl80211 HW Mode(s): 802.11bgn
Hardware: unknown [Generic MAC80211]
TX power offset: unknown
Frequency offset: unknown
Supports VAPs: yes PHY name: phy0
}}}
3) Now I've disabled wireless:
Wireless LED: off
Power consumption: 1.1 W
iwinfo output:
{{{
root@OpenWrt:/etc/config# iwinfo wlan0 info
No such wireless device: wlan0
}}}
This is correct state for disabled wireless, I think.
There is also one more thing.
Let's return to 1), but do not enable wireless. Try to run wireless
survey:
1a)
{{{
root@OpenWrt:~# iwinfo wlan0 scan
... list of networks ...
}}}
After that:
Wireless LED: on
Power consumption: 1.1 W
iwinfo output:
{{{
root@OpenWrt:~# iwinfo
wlan0 ESSID: unknown
Access Point: 00:00:00:00:00:00
Mode: Client Channel: unknown (unknown)
Tx-Power: 3 dBm Link Quality: unknown/70
Signal: unknown Noise: -94 dBm
Bit Rate: unknown
Encryption: unknown
Type: nl80211 HW Mode(s): 802.11bgn
Hardware: unknown [Generic MAC80211]
TX power offset: unknown
Frequency offset: unknown
Supports VAPs: yes PHY name: phy0
}}}
Now it seems that radio is disabled (low power consumption), but wireless
LED is on and repeated wireless survey is done correctly... Quite a
confusing state.
HW: TP-LINK TL-WA850RE(EU) v1.25 (SoC Atheros AR9341)
SW: latest official snapshot
{{{
root@OpenWrt:~# cat /etc/openwrt_release
DISTRIB_ID='OpenWrt'
DISTRIB_RELEASE='Bleeding Edge'
DISTRIB_REVISION='r49195'
DISTRIB_CODENAME='designated_driver'
DISTRIB_TARGET='ar71xx/generic'
DISTRIB_DESCRIPTION='OpenWrt Designated Driver r49195'
DISTRIB_TAINTS=''
}}}
--
Ticket URL: <https://dev.openwrt.org/ticket/22237>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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