[CentOS] CentOS 7, ATI video, ex-X, still fighting [SOLVED]

[Andreas Benzler]

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