Another vote for Lenovo G50-30. I recently installed Ubuntu 15.10 64 bit on one such laptop. The only thing that didn't work out of box was wireless and HP printer. Making the wireless required installing additional firmware for broadcom chipset. Just connect using etherness or wireless usb dongle and go to 'System Settings' -> 'Softwares & Updates' -> 'Additional Drivers'. Once you have internet working you can install HPLIP and let it take care of installing driver for the printer.
Just keep one thing in mind. If you are planning to dual boot this laptop then switch it to UEFI mode, disable secure boot and fast boot before installing Windows/Ubuntu. Once you have installed either OS you can not switch it back to legacy mode. https://help.ubuntu.com/community/UEFI Regards, Onkar -- ubuntu-in mailing list ubuntu-in@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-in
