As of 2012, the Linux kernel also had native UAS support, but it had compatibility problems with Texas Instruments chipsets.[16] The Linux driver had "broken" status from December 2012[17] until September 2013.[18] Version 3.18-rc4 of the Linux kernel disables buggy UAS implementation in xHCI host controllers Etron EJ168, ASMedia ASM1042,[19] and VIA VL80x.[20]