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I've recently installed 64bit version of kubuntu and science then I've been having issue with wifi. It work great for few minutes and then it disconnects but it shows that I am connected and I have to reconnect. What causes this problem, how to fix it?

Output of lsusb command:

Bus 001 Device 006: ID 0bda:8178 Realtek Semiconductor Corp. RTL8192CU 802.11n WLAN Adapter
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  • Please edit your question and add output of lspci -knn | grep Net -A2 terminal command.
    – Pilot6
    Jul 21 '15 at 11:00
  • I do not see any pci wireless adapters. Is it a usb dongle?
    – Pilot6
    Jul 21 '15 at 12:22
  • Yup it's usb dongle. Jul 21 '15 at 12:24
  • Shall we guess it? Then give output of lsusb.
    – Pilot6
    Jul 21 '15 at 12:24
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You can install a better driver by running in terminal

sudo add-apt-repository ppa:hanipouspilot/rtlwifi
sudo apt-get update
sudo apt-get install rtl8192cu-dkms linux-firmware

and reboot.

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