error occured?
W: GPG error:
http://ppa.launchpad.net trusty Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 4F191A5A8844C542
No worries : Get out of Synaptic .
Do this in Terminal :
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 4F191A5A8844C542
& do a sudo apt-get update , then get back in Synaptic
I'd really rather you have had followed Scott's advice and seek instruction from the Help Manual.
already done that my issue is games a are freezing every 30 seconds every so often. what about X11R7.7 I am having lag issues and freezes.
What games? Is this via Steam? What is X11R7.7? If you want effective Support, you have to provide as many details as possible when you post wbgs_broadcasting. Thanks.
Yes steam games freeze every 30 seconds and X11R7.7 is latest xorg, Latest x11 I think i just having laggy graphic on minimize and freezing every 30 seconds in game don't know why with steam.
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Up date I went back to open free drivers running ok now thanks for everything.