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Old 09-07-2012, 09:05 PM   #31
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from some quick research, it seems I built the driver against a different kernel then what I actually have?
I am not sure how I did that, or how to build the driver onto the correct kernel...
Old 09-07-2012, 09:20 PM   #32
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another diagnostic:
modinfo /lib/modules/2.6.38-14-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723e/rtl8723e.ko
i think vermagic has to exactly match the output of
uname -r
i thought modprobe -f was supposed to ignore that parameter but i guess i was wrong.

maybe someone more knowledgeable than me will enlighten us with a solution.

edit: oh wait i think i made a typo:
sudo modprobe -f rtl18723e
should be:
sudo modprobe -f rtl8723e

Last edited by schneidz; 09-07-2012 at 09:26 PM.
Old 09-07-2012, 10:09 PM   #33
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oh shoot, I should have caught that. Looks like it didn't matter though, this is what it returned:
 me@My-Laptop:~$ sudo modprobe -f rtl8723e
[sudo] password for me: 
FATAL: Error inserting rtl8723e (/lib/modules/2.6.38-14-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723e/rtl8723e.ko): Invalid module format
then the diagnostic you gave me:
me@My-Laptop:~$ modinfo /lib/modules/2.6.38-14-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723e/rtl8723e.ko
filename:       /lib/modules/2.6.38-14-generic/kernel/drivers/net/wireless/rtlwifi/rtl8723e/rtl8723e.ko
firmware:       rtlwifi/rtl8723efw.bin
description:    Realtek 8723E 802.11n PCI wireless
license:        GPL
author:         Realtek WlanFAE	<>
author:         lizhaoming	<>
srcversion:     C495D10C50D3C85AE360841
alias:          pci:v000010ECd00008723sv*sd*bc*sc*i*
depends:        rtlwifi,mac80211
vermagic:       2.6.38-14-generic SMP mod_unload modversions 686 
parm:           swlps:bool
parm:           swenc:using hardware crypto (default 0 [hardware])
parm:           ips:using no link power save (default 1 is open)
parm:           fwlps:using linked fw control power save (default 1 is open)
Old 09-07-2012, 11:26 PM   #34
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by the way, I ran a livecd and there are no network devices detected. Nothing happens with the ethernet cable either.
Old 10-06-2012, 11:04 AM   #35
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Link for anyone who came to this thread looking for an answer

Just in case you find this thread (as I did when I got my new laptop).
You can get the Atheros 1091 Ethernet controller working with the alx drivers, found at:

You need the usual build tools (gcc, make, etc) as well as perl.

Hope this helps somebody.
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