https://bugs.freedesktop.org/show_bug.cgi?id=103370

--- Comment #18 from Shih-Yuan Lee <fourdollars@gmail.com> ---
(In reply to Mike Lothian from comment #16)
> Do you also see the issue with amdgpu rather than using the radeon kernel
> driver?

amdgpu doesn't support on this AMD graphics with the kernel parameters
"amdgpu.si_support=1 radeon.si_support=0" on Linux kernel 4.14rc6.
X window system can not start up.

01:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Jet
PRO [Radeon R5 M230] [1002:6665] (rev c3)                                       
        Subsystem: Dell Jet PRO [Radeon R5 M230] [1028:0844]
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 129
        Region 0: Memory at c0000000 (64-bit, prefetchable) [size=256M]
        Region 2: Memory at d0000000 (64-bit, non-prefetchable) [size=256K]
        Region 4: I/O ports at e000 [size=256]
        Expansion ROM at d0040000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: radeon
        Kernel modules: radeon, amdgpu

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