Upstream kernel test - kernel 4.16-rc1 Installation, on which upstream kernel was installed: ubuntu 16.04.3, kernel 4.13.0-32, updated 2018-02-12 1. booting without any workaround parameters 2. booting with kernel parameter iommu=soft boot-time 45sec login o.k. "sudo lshw -short", missing line: /0/100/3.1/0 display Topaz XT [Radeon R7 M260/M265] attachments: 2018_02_02_dmesg_4.16-rc1.txt, 2018_02_12_dmesg_4.16-rc1_iommu_soft.txt