Hey Mark, never got this hard problems. But: Radeon HD 8570 / R7 240/340 OEM OEM Cards sometimes needs a hack to be running on offical fglrx driver. Did it in the past on some HP rebranded ATI cards. can you send lspcik, mine looks like ------------------------------------------------------------------------- 01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tahiti XT [Radeon HD 7970/8970 OEM / R9 280X] (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Tahiti XTL [Radeon R9 280X DirectCU II TOP] Flags: bus master, fast devsel, latency 0, IRQ 29 Memory at e0000000 (64-bit, prefetchable) [size=256M] Memory at f7e00000 (64-bit, non-prefetchable) [size=256K] I/O ports at e000 [size=256] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [48] Vendor Specific Information: Len=08 <?> Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Capabilities: [150] Advanced Error Reporting Capabilities: [270] #19 Capabilities: [2b0] Address Translation Service (ATS) Capabilities: [2c0] Page Request Interface (PRI) Capabilities: [2d0] Process Address Space ID (PASID) Kernel driver in use: radeon Kernel modules: radeon ------------------------------------------------------------------- You machine from a oem reseller ???. Sincerely Andy _______________________________________________ CentOS mailing list CentOS@xxxxxxxxxx https://lists.centos.org/mailman/listinfo/centos