My desktop freeze with every Nvidia post 334.21 drivers. I tried the lastest drivers from this ppa yesterday and after a days of use the desktop freeze. I had to reboot and after that it freeze after a few seconds. I had to go back to 331 drivers from repo.
I installed the latest driver so it’s the version 346.35. I just have this problem since 334.21 drivers.
I have read that it’s not recommended to install drivers from official Nvidia installer.
I have 2 monitors (a monitor and a TV) but I use only one at a time.
I try the drivers 346.35 from edgers ppa to see if there is a difference compared to mamarley ppa.
OK then I would just use those for now until these are made available officially from Ubuntu. The use of 3rd party repositories are always considered to be use at your own risk as. the packages in these repositories can not be vetted or officially supported.
Well, if there is a bug in one of these then either upstream or Ubuntu would have already found and fixed the issue before they make into the official repositories.
BTW, what did you mean by “I installed hardware enablement stack yesterday”?
Did you also enable the Kubuntu backports repository to receive their KDE SC 4.14.2 updates?
I realize that KDE SC 4.14.2 isn’t the latest release from the KDE community but it is the latest version released for Kubuntu 14.04 LTS by the Kubuntu developers.