I have just updated my laptop (toshiba qosmio F60), from ubuntu 12.04 to 14.04(.1) with a "clean" installation using the usb disk. The wifi didn't work properly on ubuntu 12.04 (that's why I updated), but on 14.04 it's even worst. On Windows 7 it works perfectly.
I can see the wireless networks, but I cannot connect to them. It tries to connect several times without success, and after such tries, the wifi disconnects after next reboot. This happens both at home and at work (so I assume routers aren't the problem, since on windows 7, and also my android phone, can connect to them properly).
I have a Realtek RTL8191SEvB card. This is the output of lshw -C network (sorry, translated from spanish):
*-network
description: Wireless interface
product: RTL8191SEvB Wireless LAN Controller
manufacturer: Realtek Semiconductor Co., Ltd.
physical id: 0
bus information: pci@0000:03:00.0
logic name: wlan0
version: 10
series: b4:74:9f:49:fd:ba
width: 32 bits
clock: 33MHz
capacity: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl8192se driverversion=3.13.0-32-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
resourcess: irq:17 ioport:3000(size=256) memoria:d3600000-d3603fff
I have searched this problem for several hours. All the solutions I found correspond to previous kernel versions (in which you have to re-compile the Realtek driver). However, since kernel 3.8 (I am using 3.13), the Realtek driver is already included. I have also tried the ndiswrapper with the windows xp driver, but the problem goes worst and the wifi option on the network-manager doesn't even appear. The only workaround solution I found is to change to Debian, but I would like to keep using Ubuntu. Any idea of what is going on?
Thank you in advance for your responses.
P.S.: Find attached the lsmod output:
Module Size Used by
rc_dib0700_rc5 12508 0
tuner_xc2028 31249 1
snd_hda_codec_hdmi 46254 4
snd_hda_codec_realtek 61438 1
arc4 12608 2
btusb 32412 0
snd_hda_intel 52355 5
rfcomm 69160 8
bnep 19624 2
snd_hda_codec 192906 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
bluetooth 391196 22 bnep,btusb,rfcomm
dvb_usb_dib0700 144289 0
dib8000 57402 1 dvb_usb_dib0700
dib7000m 22858 1 dvb_usb_dib0700
dib0090 38185 1 dvb_usb_dib0700
dib0070 18232 1 dvb_usb_dib0700
dib7000p 38420 2 dvb_usb_dib0700
snd_hwdep 13602 1 snd_hda_codec
snd_pcm 102099 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
uvcvideo 80885 0
snd_page_alloc 18710 2 snd_pcm,snd_hda_intel
dib3000mc 23239 1 dvb_usb_dib0700
snd_seq_midi 13324 0
snd_seq_midi_event 14899 1 snd_seq_midi
snd_rawmidi 30144 1 snd_seq_midi
nvidia 10675249 43
snd_seq 61560 2 snd_seq_midi_event,snd_seq_midi
rtl8192se 63196 0
videobuf2_vmalloc 13216 1 uvcvideo
videobuf2_memops 13362 1 videobuf2_vmalloc
videobuf2_core 40664 1 uvcvideo
dibx000_common 18752 5 dib8000,dvb_usb_dib0700,dib3000mc,dib7000m,dib7000p
dvb_usb 24215 1 dvb_usb_dib0700
coretemp 13435 0
videodev 134688 2 uvcvideo,videobuf2_core
dvb_core 121659 3 dib8000,dvb_usb,dib7000p
snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi
rc_core 28124 4 dvb_usb,dvb_usb_dib0700,rc_dib0700_rc5
rtl_pci 26690 1 rtl8192se
snd_timer 29482 2 snd_pcm,snd_seq
rtlwifi 63475 2 rtl_pci,rtl8192se
kvm_intel 143060 0
snd 69238 21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
kvm 451511 1 kvm_intel
mac80211 630653 3 rtl_pci,rtlwifi,rtl8192se
soundcore 12680 1 snd
cfg80211 484040 2 mac80211,rtlwifi
mei_me 18627 0
joydev 17381 0
serio_raw 13462 0
lpc_ich 21080 0
parport_pc 32701 0
i7core_edac 24122 0
toshiba_acpi 22901 0
drm 303102 2 nvidia
edac_core 62291 1 i7core_edac
mei 82276 1 mei_me
sparse_keymap 13948 1 toshiba_acpi
ppdev 17671 0
mac_hid 13205 0
lp 17759 0
wmi 19177 1 toshiba_acpi
toshiba_bluetooth 12852 0
video 19476 0
parport 42348 3 lp,ppdev,parport_pc
hid_generic 12548 0
usbhid 52570 0
hid 106148 2 hid_generic,usbhid
psmouse 106678 0
ahci 25819 2
r8169 67581 0
libahci 32560 1 ahci
sdhci_pci 23172 0
mii 13934 1 r8169
sdhci 43015 1 sdhci_pci
