#663: very low link quality using madwifi (current-ng)
---------------------------------+------------------------------------------
Reporter: fca | Owner:
Type: defect | Status: new
Priority: major | Milestone:
Component: madwifi: other | Version:
Resolution: | Keywords: receive sensitivity
Patch_attached: 0 |
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Changes (by mrenzmann):
* priority: blocker => major
Old description:
> Hello -
>
> Using the latest madwifi -
>
> I have two cards, a D-Link DWL-G122 and an Atheros one in a Fujitsu
> laptop. My access point is about 1 metre from the computer. The D-Link,
> using ndiswrapper, always reports 100% quality and no noise, even away
> from the access point. The Atheros reports 45/94 quality under Linux,
> with lots of noise, and stops working about 5m from the access point.
> Under windows, the card works normally. This makes the card practically
> useless under Linux.
>
> I also noticed that most people using madwifi, when reporting about some
> problem, and when they include some iwconfig output, always have a very
> low link quality.
>
> I am now in another room, away from the access point:
>
> D-Link reports:
>
> wlan0 IEEE 802.11g ESSID:"cardonet"
> Mode:Managed Frequency:2.462 GHz Access Point:
> 00:60:B3:E2:59:96
> Bit Rate:24 Mb/s Tx-Power:20 dBm Sensitivity=-115 dBm
> RTS thr:2347 B Fragment thr:2346 B
> Encryption key:off
> Power Management:off
> Link Quality:100/100 Signal level:-62 dBm Noise level:-256
> dBm
> Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
> Tx excessive retries:0 Invalid misc:0 Missed beacon:0
>
> however, the Atheros can't even find the access point, as it only works
> when very near the transmitter:
>
> ath0 No scan results
>
> Any clues?
>
> ath_pci is loaded with rfkill=0
> wlan_scan_sta is also loaded OK
New description:
Hello -
Using the latest madwifi -
I have two cards, a D-Link DWL-G122 and an Atheros one in a Fujitsu
laptop. My access point is about 1 metre from the computer. The D-Link,
using ndiswrapper, always reports 100% quality and no noise, even away
from the access point. The Atheros reports 45/94 quality under Linux, with
lots of noise, and stops working about 5m from the access point. Under
windows, the card works normally. This makes the card practically useless
under Linux.
I also noticed that most people using madwifi, when reporting about some
problem, and when they include some iwconfig output, always have a very
low link quality.
I am now in another room, away from the access point:
D-Link reports:
{{{
wlan0 IEEE 802.11g ESSID:"cardonet"
Mode:Managed Frequency:2.462 GHz Access Point:
00:60:B3:E2:59:96
Bit Rate:24 Mb/s Tx-Power:20 dBm Sensitivity=-115 dBm
RTS thr:2347 B Fragment thr:2346 B
Encryption key:off
Power Management:off
Link Quality:100/100 Signal level:-62 dBm Noise level:-256 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
}}}
however, the Atheros can't even find the access point, as it only works
when very near the transmitter:
{{{
ath0 No scan results
}}}
Any clues?
ath_pci is loaded with rfkill=0
wlan_scan_sta is also loaded OK
Comment:
What version of the wireless tools are you using?
--
Ticket URL: <http://madwifi.org/ticket/663>
MadWifi <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity_______________________________________________
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