I have D-LINK DWA-123 wireless USB stick. It seems that the driver used is rt2800usb:
enedene@laptop:~$ lsmod
Module Size Used by
iwlagn 273980 0
btusb 18160 2
snd_hrtimer 12648 1
rfcomm 38408 12
bnep 17923 2
bluetooth 148839 23 btusb,bnep,rfcomm
parport_pc 32114 0
ppdev 12849 0
binfmt_misc 17292 1
dm_crypt 22565 1
nvidia 10390874 32
snd_hda_codec_si3054 12864 1
snd_hda_codec_realtek 254125 1
snd_hda_intel 24262 3
snd_hda_codec 91859 3 snd_hda_codec_si3054,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 13276 1 snd_hda_codec
snd_pcm 80435 3 snd_hda_codec_si3054,snd_hda_intel,snd_hda_codec
snd_seq_midi 13132 0
snd_rawmidi 25241 1 snd_seq_midi
snd_seq_midi_event 14475 1 snd_seq_midi
snd_seq 51567 3 snd_seq_midi,snd_seq_midi_event
iwl3945 73360 0
arc4 12473 4
rt2800usb 22222 0
rt2800lib 48909 1 rt2800usb
snd_timer 28932 3 snd_hrtimer,snd_pcm,snd_seq
iwl_legacy 71499 1 iwl3945
stkwebcam 23296 0
crc_ccitt 12595 1 rt2800lib
snd_seq_device 14172 3 snd_seq_midi,snd_rawmidi,snd_seq
rt2x00usb 20092 1 rt2800usb
rt2x00lib 48146 3 rt2800usb,rt2800lib,rt2x00usb
snd 55902 17 snd_hda_codec_si3054,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
videodev 85626 1 stkwebcam
soundcore 12600 1 snd
snd_page_alloc 14115 2 snd_hda_intel,snd_pcm
joydev 17393 0
r592 17808 0
memstick 15857 1 r592
mac80211 393421 6 iwlagn,iwl3945,rt2800lib,iwl_legacy,rt2x00usb,rt2x00lib
cfg80211 172427 5 iwlagn,iwl3945,iwl_legacy,rt2x00lib,mac80211
tpm_infineon 13200 0
psmouse 73673 0
serio_raw 12990 0
asus_laptop 19050 0
sparse_keymap 13658 1 asus_laptop
tpm_tis 14002 0
lp 17455 0
parport 40930 3 parport_pc,ppdev,lp
vesafb 13489 1
usbhid 41905 0
hid 77367 1 usbhid
firewire_ohci 35854 0
sdhci_pci 13658 0
sdhci 27360 1 sdhci_pci
video 18908 0
firewire_core 56937 1 firewire_ohci
crc_itu_t 12627 1 firewire_core
r8169 43104 0
The connection is very slow, up to 100kB/s. Is there a way to fix this?
uname -a
Linux laptop 3.0.0-16-generic #28-Ubuntu SMP Fri Jan 27 17:50:54 UTC 2012 i686 i686 i386 GNU/Linux
EDIT:
I've just tried installing new kernel:
uname -a
Linux linux 3.3.0-030300rc4-generic #201202181935 SMP Sun Feb 19 00:44:42 UTC 2012 i686 i686 i386 GNU/Linux
The problem stays the same.
