Wifi connects but stops a lot - Printable Version

Wifi connects but stops a lot - Printable Version

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Wifi connects but stops a lot - fred - 05-26-2015

Hi
We have installed LL on a new (1TB) HDD in a Compaq Presario sr5412de desktop, it has 4gb ram and (I think) a dual core 1.8 cpu.
The LL install went without incident and all updates were loaded while it was online via cable.
I plugged in an Edimax EW-7811un USB WIFI and established a connection to our Netgear R6520 router, I didn't test it beyond checking if it can go online.
I then moved the computer to its workstation which is less than 10m line of sight from the router.

Unfortunately I have found the WIFI drops out randomly and doesn't automatically restart. The only way to reconnect is to manually disconnected and then reconnect or restart the computer. There doesn't appear to be a pattern associated with the WIFI failures.
I think the problem doesnt rest with the router because we also have an Easybox router running in the same area, switching the WIFI to the Easybox doesn't change the connect-fail problem.

Any suggestions appreciated;
Thanks.

Re: Wifi connects but stops a lot - Valtam - 05-26-2015

Please paste the output of:

Code:
lsusb

Re: Wifi connects but stops a lot - fred - 05-26-2015

Hi Jerry
Thanks for the reply...
Here is the output.

Code:
KQ415AA-ABD-SR5412DE:~$ lsusb

Bus 001 Device 003: ID 0bda:0111 Realtek Semiconductor Corp. RTS5111 Card Reader Controller

Bus 001 Device 002: ID 7392:7811 Edimax Technology Co., Ltd EW-7811Un 802.11n Wireless Adapter [Realtek RTL8188CUS]

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

Re: Wifi connects but stops a lot - Valtam - 05-26-2015

Fred, give this a go:

Code:
sudo apt-get install linux-headers-generic build-essential dkms

git clone https://github.com/pvaret/rtl8192cu-fixes.git

sudo dkms add ./rtl8192cu-fixes

sudo dkms install 8192cu/1.10

sudo depmod -a

sudo cp ./rtl8192cu-fixes/blacklist-native-rtl8192.conf /etc/modprobe.d/

Reboot.

Re: Wifi connects but stops a lot - fred - 05-26-2015

I have completed the process and a restart.
On the restart, the WIFI connected a lot faster than I have previously observed and the signal strength has gone from a steady 3 bars to 4 bars, two positive changes.

I will have to leave this now and come back to it tomorrow for a longer test.

Thanks for your input so far Jerry it is appreciated;

Regards.

Re: Wifi connects but stops a lot - Valtam - 05-26-2015

No problem Fred, please let us know how you get on.

Re: Wifi connects but stops a lot - fred - 05-27-2015

[size=1em]It looks like the problem has been solved... That was easy :-)

So to satisfy my uninformed curiosity what was it your solution did?[/size][size=1em]
As best as I can understand the process, the apt-get line was to go online and download a
dynamic kernel module which in this case is the rtl8192cu driver (which I guess is the latest Realtech 8192 driver). [/size][size=1em]I then added and installed the new driver. Not sure what the sudo depmod -a did though.
The last line was basically to blacklist any previous version of the rtl8192 driver... am I close?

I have to say that to date, installing and configuring LL has been a remarkably easy process,
we also had to install configure win8.1, it definitely was not as simple as LL.[/size][size=1em]

Again, thanks for your input it is appreciated.

Regards.[/size]

Re: Wifi connects but stops a lot - Valtam - 05-27-2015

(05-27-2015, 01:31 PM)fred link Wrote: [size=1em]

So to satisfy my uninformed curiosity what was it your solution did?[/size][size=1em]
[/size]

The existing driver was not efficient. The new instructions installed a stable, more reliable driver.

Re: Wifi connects but stops a lot - morti - 06-27-2015

..if its a more stable, and more reliable driver,Jerry - shouldn't we all be doing this install...or does it depend on the test result

Re: Wifi connects but stops a lot - Valtam - 06-27-2015

Depends on the result.

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