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We had the same problem (on a T520), and thanks to Honza's answer, we found that using a 90W adapter instead of the 65W adapter fixed the problem for us too (thanks!). After some googling, I found an explanation here: http://linux-thinkpad.10952.n7.nabble.com/WARNING-Lenovo-ThinkPads-and-65W-power-supplies-td13173.html Basically according to this post "the ...


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I've had a similar problem on my Lenovo Y50 (rtl8723be), where wifi would disconnect with random intervals (between 5-10 minutes) I found this thread that matched my problems: http://ubuntuforums.org/showthread.php?t=2262957 where user Pilot6 suggests to update drivers from this repository https://github.com/lwfinger/rtlwifi_new and it looks like it has ...


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If everything works well in Ubuntu 15.04, then the solution is to upgrade kernel in Ubuntu 14.04. You can do it by running sudo apt-get install linux-generic-lts-vivid and reboot. You can also update xorg by xserver-xorg-lts-vivid libqt5gui5 libgles1-mesa-lts-vivid libgles2-mesa-lts-vivid libgl1-mesa-glx-lts-vivid libgl1-mesa-glx-lts-vivid:i386 ...



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