I just got a new X1 carbon 3 gen (intel i5 5300, 2560x1440, intel 5500 graphics) and installed ubuntu 14.04 (3.16.0-34-generic). I experienced all same problems list above and still can not fixed them by any methods listed above. Just to confirm this bug also exist in X1 carbon 3 gen. Thanks!
I just got a new X1 carbon 3 gen (intel i5 5300, 2560x1440, intel 5500 graphics) and installed ubuntu 14.04 (3.16.0- 34-generic) . I experienced all same problems list above and still can not fixed them by any methods listed above. Just to confirm this bug also exist in X1 carbon 3 gen. Thanks!