I look and tried many solution from many thread but I still unable to make this wifi card work properly (very slow, unable to connect to some wifi spot, etc.).
I tried to compile the driver from the ralink website but it doesn't work. Tried to blacklist many mod, withou any result.
So here are some command results, hope their help you help me:
lspci
sebastien@sebastien-portable:~$ lspci
00:00.0 Host bridge: Advanced Micro Devices [AMD] Family 14h Processor Root Complex
00:01.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Wrestler [Radeon HD 6310]
00:01.1 Audio device: Advanced Micro Devices [AMD] nee ATI Wrestler HDMI Audio [Radeon HD 6250/6310]
00:11.0 SATA controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode]
00:12.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.2 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: Advanced Micro Devices [AMD] nee ATI SBx00 SMBus Controller (rev 42)
00:14.2 Audio device: Advanced Micro Devices [AMD] nee ATI SBx00 Azalia (Intel HDA) (rev 40)
00:14.3 ISA bridge: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 LPC host controller (rev 40)
00:14.4 PCI bridge: Advanced Micro Devices [AMD] nee ATI SBx00 PCI to PCI Bridge (rev 40)
00:14.5 USB controller: Advanced Micro Devices [AMD] nee ATI SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:15.0 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB700/SB800/SB900 PCI to PCI bridge (PCIE port 0)
00:15.2 PCI bridge: Advanced Micro Devices [AMD] nee ATI SB900 PCI to PCI bridge (PCIE port 2)
00:18.0 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 0 (rev 43)
00:18.1 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 6
00:18.6 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 5
00:18.7 Host bridge: Advanced Micro Devices [AMD] Family 12h/14h Processor Function 7
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06)
03:00.0 Network controller: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe
lsmod
sebastien@sebastien-portable:~$ lsmod
Module Size Used by
rt2800pci 18715 0
arc4 12529 2
rt2800lib 58925 1 rt2800pci
crc_ccitt 12667 1 rt2800lib
rt2x00pci 14577 1 rt2800pci
rt2x00lib 55301 3 rt2800pci,rt2800lib,rt2x00pci
mac80211 506816 3 rt2800lib,rt2x00pci,rt2x00lib
cfg80211 205544 2 rt2x00lib,mac80211
eeprom_93cx6 12725 1 rt2800pci
rt2860sta 864748 0
snd_hda_codec_conexant 62128 1
snd_hda_codec_hdmi 32474 1
uvcvideo 72627 0
rts5139 351143 0
snd_hda_intel 33773 4
videodev 98259 1 uvcvideo
snd_hda_codec 127706 3 snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_intel
snd_hwdep 13668 1 snd_hda_codec
psmouse 87692 0
v4l2_compat_ioctl32 17128 1 videodev
serio_raw 13211 0
k10temp 13166 0
snd_pcm 97188 3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
sp5100_tco 13791 0
i2c_piix4 13301 0
snd_seq_midi 13324 0
snd_rawmidi 30748 1 snd_seq_midi
ideapad_laptop 18234 0
sparse_keymap 13890 1 ideapad_laptop
rfcomm 47604 0
joydev 17693 0
snd_seq_midi_event 14899 1 snd_seq_midi
bnep 18281 2
bluetooth 180104 10 rfcomm,bnep
parport_pc 32866 0
ppdev 17113 0
snd_seq 61896 2 snd_seq_midi,snd_seq_midi_event
snd_timer 29990 2 snd_pcm,snd_seq
snd_seq_device 14540 3 snd_seq_midi,snd_rawmidi,snd_seq
snd 78855 18 snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 15091 1 snd
mac_hid 13253 0
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
lp 17799 0
parport 46562 3 parport_pc,ppdev,lp
usbhid 47199 0
hid 99559 1 usbhid
r8169 62099 0
radeon 804372 4
video 19596 0
wmi 19256 0
ttm 76949 1 radeon
drm_kms_helper 46978 1 radeon
drm 242038 6 radeon,ttm,drm_kms_helper
i2c_algo_bit 13423 1 radeon
iwconfig
sebastien@sebastien-portable:~$ iwconfig
lo no wireless extensions.
wlan0 IEEE 802.11bgn ESSID:"4CE6763F0E0A"
Mode:Managed Frequency:2.452 GHz Access Point: 4C:E6:76:3F:0E:0A
Bit Rate=54 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-39 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:100 Missed beacon:0
eth0 no wireless extensions.