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[Ekimia <contact@xxxxxxxxx>]

the behaviour seems different from a machine to another.

However, disabling the sleep feature of the driver seems to correct the
problem on a Gigabyte Brix here :

So you could try :

echo "options rtl8723be fwlps=0" | sudo tee
/etc/modprobe.d/rtl8723be.conf

And report the results.

Obviously using the very latest main kernel which is 3.13.0-32 today.

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https://bugs.launchpad.net/bugs/1320070

Title:
  Realtek Wifi card RTL8723BE drops connection with MSI enabled

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Trusty:
  Fix Released
Status in “linux” source package in Utopic:
  Fix Released

Bug description:
  As my testing result with ThinkPad E540 and other users' report[1],
  RTL8723BE drops connection with MSI enabled, need to backport
  329d6e299f92a591acb3a80f6d597a5f9dce7e6d "rtlwifi: rtl8723be: disable
  MSI interrupts mode"

  [1] https://bugs.launchpad.net/bugs/1240940

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