On Mon, 2010-08-30 at 11:45 -0700, JD wrote:
> On 08/30/2010 11:32 AM, Rick Stevens wrote:
>> On 08/30/2010 10:41 AM, JD wrote:
>>> F13, latest updates.
>>> wifi card: Sparklan wmir-200N
>>>
http://www.sparklan.com/product.php?func=view&prod_id=43
>>> Chipset: RT2860/RT2850
>>>
>>> The Datasheet says:
>>>
>>> Output Power
>>> 802.11a: 12.5dBm ± 1.5dBm
>>> 802.11b: 17dBm ± 1.5dBm
>>> 802.11g: 14dBm ± 1.5dBm
>>> 802.11an: 14dBm ± 1.5dBm
>>> 802.11gn: 14dBm ± 1.5dBm
>>>
>>> I am running in g mode (54megabits/s)
>>>
>>> $ sudo iwconfig wlan0
>>> wlan0 IEEE 802.11abgn ESSID:"Deleted"
>>> Mode:Managed Frequency:2.462 GHz Access Point:
>>> aa:bb:cc:dd:ee:ff
>>> Bit Rate=54 Mb/s Tx-Power=8 dBm<<<=====
>>> Retry long limit:7 RTS thr:off Fragment thr:off
>>> Encryption key:off
>>> Power Management:on
>>> Link Quality=70/70 Signal level=58 dBm
>>> Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
>>> Tx excessive retries:0 Invalid misc:0 Missed beacon:0
>>>
>>> I tried to set txpower to 14 per datasheet spec:
>>>
>>> $ sudo iwconfig wlan0 txpower 14dBm
>>> Error for wireless request "Set Tx Power" (8B26) :
>>> SET failed on device wlan0 ; Invalid argument.
>>>
>>> The drivers that are loaded for this wifi card are:
>>>
>>> rt2800pci 7931 0
>>> rt2800lib 27818 1 rt2800pci
>>> rt2x00pci 5799 1 rt2800pci
>>> rt2x00lib 25936 3 rt2800pci,rt2800lib,rt2x00pci
>>> mac80211 182154 2 rt2x00pci,rt2x00lib
>>> cfg80211 135626 2 rt2x00lib,mac80211
>>> eeprom_93cx6 1305 1 rt2800pci
>>> crc_ccitt 1311 2 rt2800pci,irda
>>>
>>> Is this an issue with the wext driver or with the rt2XXXXX drivers?
>> Try "sudo iwconfig wlan0 txpower 14". The "dBm" is assumed
by the
>> command. "man iwconfig" for details.
>> ----------------------------------------------------------------------
>> - Rick Stevens, Systems Engineer, C2 Hosting ricks(a)nerd.com -
>> - AIM/Skype: therps2 ICQ: 22643734 Yahoo: origrps2 -
>> - -
>> - Vegetarian: Old Indian word for "lousy hunter" -
>> ----------------------------------------------------------------------
> Did not work :(
>
> $ sudo iwconfig wlan0 txpower 14
> Error for wireless request "Set Tx Power" (8B26) :
> SET failed on device wlan0 ; Invalid argument.
>
> But setting it to 8 worked. So, why does it reject what the specs say is
> legit power setting?
>
How about 9?
Maybe they want the value in hex?
Tried that too. Same error:
$ sudo iwconfig wlan0 txpower 9
Error for wireless request "Set Tx Power" (8B26) :
SET failed on device wlan0 ; Invalid argument.
$ sudo iwconfig wlan0 txpower 0x9
Error for wireless request "Set Tx Power" (8B26) :
SET failed on device wlan0 ; Invalid argument.