kernel-3.13.7-200.fc20.x86_64 update: wifi "No buffer space available" error.

[poma]

On 31.03.2014 15:00, Stub wrote:
> Hi,
> 
> My F20 PC currently has two kernels installed:
> 
> kernel-3.13.6-200.fc20.x86_64 and kernel-3.13.7-200.fc20.x86_64.
> 
> 
> With the latest kernel my wifi connection constantly breaks, while the NetworkManager still indicates a connected wifi; this happens with two different USB wifi gadgets.
> 
> 
> While pinging I suddenly get:
> 
> ping: sendmsg: No buffer space available.
> 
> 
> This does not occur when I boot with kernel kernel-3.13.6-200.fc20.x86_64; wifi is then stable.
> 
> I'm afraid some bad wifi or network stuff came with the new kernel update!
> 
> (I don't know whether the cable connections are also affected; I haven't checked that).
> 
> One of the wifi's is: ID 0846:9041 NetGear, Inc. WNA1000M 802.11bgn [Realtek RTL8188CUS]
> 
> Regards,
> R.L.

 $ if diff -ur \
 > linux-3.13.6-200.fc20.x86_64/drivers/net/wireless/rtlwifi/rtl8192cu \
 > linux-3.13.7-200.fc20.x86_64/drivers/net/wireless/rtlwifi/rtl8192cu \
 > ; then echo equal ; else echo unequal ; fi
 equal

Try to switch to a lower 802.11 band,
or roll the dice with kernel-3.14.0-0.rc8.git1.2.fc21.x86_64.rpm,
http://alt.fedoraproject.org/pub/alt/rawhide-kernel-nodebug/x86_64/


poma