intel-graphics is used for question particular to the Intel range of graphic chips and their drivers. Use it only if you know for sure the problem is not a general graphics issue (in that case use the tag: graphics)
Use of this tag indicates a specific Intel related graphics problem, that is not a general graphics board issue (in that case graphics should be used) or a generic Intel motherboard/chip issue (in that case intel should be used).
Several distributions include the option to install the non-open source drivers for Intel graphics chips.
Intel hosts their own Linux graphics drivers