I have just installed Ubuntu 11.04 on my brother's Toshiba Satellite Pro L500 and have spent all day trying to get the wireless to work. I am fairly new to Ubuntu (have played about without getting my hands dirty for a while), but I have tried everything I could find in the threads and still cannot solve the problem, so here goes...
the laptop does not have a physical wifi-switch (it should switch on-off with Fn+F8, which doesn't work), the drivers seem to be installed, but I cannot 'enable wireless', and I found that it is 'Hard blocked':
sudo rfkill list all :
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
but 'rfkill unblock all' does nothing.
Some people mention that certain wireless devices might need to be switched on in another OS, but this is not an option, as I hastily removed Windows and have no way to re-install it.
Below, I put all sorts of information (which I only partly understand, but saw was advised in a 'How to post about wifi' thread):
Toshiba Satellite L500
Wireless Brand … (lspci):
14:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10)
Interface (iwconfig wlan0):
wlan0 802.11bg Nickname:"rtl8191SEVA2"
Mode:Managed Frequency=2.457 GHz Access Point: Not-Associated
Bit Rate:1 Mb/s
Retry:on RTS thr:off Fragment thr:off
Link Quality=10/100 Signal level=0 dBm Noise level=-100 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
Modules (lsmod | grep r8192): (NOT SURE if there are others?)
r8192se_pci 482548 0
cfg80211 156212 1 r8192se_pci
Kernel boot messages (dmesg | grep r8192 ):
[10264.285931] ============> r8192E suspend call.
[10264.285935] r8192E support WOL call??????????????????????
[10264.923747] ================>r8192E resume call.
Network configuration (sudo lshw -C network):
description: Wireless interface
product: RTL8191SEvB Wireless LAN Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:14:00.0
logical name: wlan0
width: 32 bits
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=rtl819xSE driverversion=0017.0507.2010 firmware=0 latency=0 link=no multicast=yes wireless=802.11bg
resources: irq:19 ioport:4000(size=256) memory:f2200000-f2203fff
Scan for networks (iwlist scan wlan0):
wlan0 Failed to read scan data : Network is down
Restarting the network (sudo /etc/init.d/networking restart ):
* Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces
* Reconfiguring network interfaces... Ignoring unknown interface eth0=eth0.