Got the same problem with rt2500pci, the speed is only 1Mb. Executing
'sudo iwconfig wlan1 rate 54M' sets the rate to 54Mb:
~$ lsb_release -rd
Description: Ubuntu 9.04
Release: 9.04
~$ uname -a
Linux neclaptop 2.6.28-13-generic #44-Ubuntu SMP Tue Jun 2 07:57:31 UTC 2009
i686 GNU/Linux
~$ lsmod | grep ^rt
rt2500pci 23936 0
rt2x00pci 15616 1 rt2500pci
rt2x00lib 37888 2 rt2500pci,rt2x00pci
~$ lspci|grep RaL
02:00.0 Network controller: RaLink RT2500 802.11g Cardbus/mini-PCI (rev 01)
~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
pan0 no wireless extensions.
wmaster0 no wireless extensions.
wlan1 IEEE 802.11bg ESSID:"THEHILL"
Mode:Managed Frequency:2.432 GHz Access Point: 00:16:01:A1:0F:56
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Power Management:off
Link Quality=49/100 Signal level:-62 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
sudo iwconfig wlan1 rate 54M
~$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
pan0 no wireless extensions.
wmaster0 no wireless extensions.
wlan1 IEEE 802.11bg ESSID:"THEHILL"
Mode:Managed Frequency:2.432 GHz Access Point: 00:16:01:A1:0F:56
Bit Rate=54 Mb/s Tx-Power=20 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Power Management:off
Link Quality=70/100 Signal level:-56 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
--
rt2400pci unusably low bandwidth
https://bugs.launchpad.net/bugs/289811
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