Re: Unable to set txpower on wifi card - SOLVED

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



  A patch was submitted on Aug 25th, 2010 and integrated in 2.6.36.

Google the exact phrase "rt2x00: Fix max TX power settings"

so, it will be quiet a while before a fedora kernel package sees it.


On 08/30/2010 02:22 PM, JB wrote:
> JD<jd1008<at>  gmail.com>  writes:
>
>>    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?
>>
> Hi,
> $ man iwconfig
> ...
>        txpower
>                ...
>                In  addition,  on and off enable and disable the radio, and auto
>                and fixed enable and disable power control  (if  those  features
>                are available).
>                ...
>                    iwconfig eth0 txpower auto
>
> $ sudo iwconfig wlan0
> ...
>             Bit Rate=54 Mb/s   Tx-Power=8 dBm<<<=====
> ...
>
> The Tx-Power=8 dBm
> means "fixed" power control (as opposite to "auto").
> JB
>
>

-- 
users mailing list
users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe or change subscription options:
https://admin.fedoraproject.org/mailman/listinfo/users
Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines



[Index of Archives]     [Current Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Yosemite News]     [Yosemite Photos]     [KDE Users]     [Fedora Tools]     [Fedora Docs]

  Powered by Linux