Hello,

Since I upgraded ubuntu to 12.04 and now 12.10 I'm having wireless problems from low speeds to random disconnects. I simply can't use wireless at all since it is really "twitchy". My laptop is a SAMSUNG R580 with a realtek 8192se 802.11 b/g/n wireless PCI card.

lspci -nn | grep 'Wireless'
Code:
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8192E/RTL8192SE Wireless LAN Controller (rev 01)
iwconfig wlan0
Code:
wan0      No such device

ricardo@ricardo-R580:~$ iwconfig wlan0
wlan0     802.11bgn  ESSID:"Vodafone-B8F05D"  Nickname:"rtl8192E"
          Mode:Managed  Frequency=2.462 GHz  Access Point: 58:98:35:B8:F0:5D   
          Bit Rate=1 Mb/s   
          Retry:on   RTS thr:off   Fragment thr:off
          Power Management period:0us  mode:All packets received
          Link Quality=90/100  Signal level=-53 dBm  Noise level=-115 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
lsmod
Code:
Module                  Size  Used by
samsung_laptop         14003  0 
rtllib_crypt_ccmp      12725  4294967293 
dm_crypt               22402  0 
snd_hda_codec_hdmi     31423  4 
nvidia              10249589  53 
rfcomm                 37276  12 
binfmt_misc            17260  1 
bnep                   17707  2 
parport_pc             31968  0 
ppdev                  12817  0 
joydev                 17161  0 
snd_hda_codec_realtek    63356  1 
snd_hda_intel          32515  5 
snd_hda_codec         111547  3 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep              13272  1 snd_hda_codec
snd_pcm                80163  3 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi           13132  0 
snd_rawmidi            25382  1 snd_seq_midi
snd_seq_midi_event     14475  1 snd_seq_midi
snd_seq                51255  2 snd_seq_midi,snd_seq_midi_event
coretemp               13168  0 
snd_timer              24411  2 snd_pcm,snd_seq
snd_seq_device         14137  3 snd_seq_midi,snd_rawmidi,snd_seq
kvm_intel             126745  0 
r8192e_pci            203468  0 
uvcvideo               71277  0 
snd                    61991  20 snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
videobuf2_core         32070  1 uvcvideo
rtllib                136053  1 r8192e_pci
soundcore              14599  1 snd
kvm                   357806  1 kvm_intel
videodev               95841  2 uvcvideo,videobuf2_core
psmouse                84843  0 
btusb                  17950  0 
bluetooth             183228  22 rfcomm,bnep,btusb
lib80211               14040  2 rtllib_crypt_ccmp,rtllib
serio_raw              13031  0 
lp                     13299  0 
lpc_ich                16925  0 
snd_page_alloc         14036  2 snd_hda_intel,snd_pcm
mac_hid                13037  0 
parport                40753  3 parport_pc,ppdev,lp
microcode              18209  0 
videobuf2_vmalloc      12756  1 uvcvideo
intel_ips              17721  0 
videobuf2_memops       13184  1 videobuf2_vmalloc
hid_generic            12445  0 
usbhid                 41702  0 
hid                    82142  2 hid_generic,usbhid
sky2                   52926  0 
video                  18847  0
dmesg | grep 'wlan'
Code:
[   30.699615] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   30.701743] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   33.888662] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
sudo lshw -C network
Code:
  *-network               
       description: Wireless interface
       product: RTL8192E/RTL8192SE Wireless LAN Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 01
       serial: 00:e0:4c:00:00:01
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=rtl819xE driverversion=0014.0401.2010 ip=192.168.1.69 latency=0 link=yes multicast=yes wireless=802.11bgn
       resources: irq:16 ioport:3000(size=256) memory:f0700000-f0703fff
  *-network
       description: Ethernet interface
       product: Yukon Optima 88E8059 [PCIe Gigabit Ethernet Controller with AVB]
       vendor: Marvell Technology Group Ltd.
       physical id: 0
       bus info: pci@0000:07:00.0
       logical name: eth0
       version: 11
       serial: 00:24:54:5a:21:a2
       size: 100Mbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=sky2 driverversion=1.30 duplex=full ip=192.168.1.65 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       resources: irq:42 memory:f0800000-f0803fff ioport:5000(size=256) memory:f0400000-f041ffff
uname -mr
Code:
3.5.0-18-generic i686
Any help would be appreciated since this wireless issue is driving me nuts. I already tried both network manager and wicd and the same issues happen every time. I really enjoy ubuntu but I'm forced to use another OS because I'm unable to have a persistent wireless connection.