Hi Joseph,

and here is the root cause of the problem:
0b:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/580] (rev ef) (prog-if 00 [VGA controller])
    Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device 0b31
    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 11
    Region 0: Memory at <ignored> (64-bit, prefetchable) [disabled]
    Region 2: Memory at b0000000 (64-bit, prefetchable) [disabled] [size=2M]

The BIOS is not able to assign resources to one of the VGA adapters when there are more than eight installed.

You could try with pci=realloc, but I doubt that there is much we can do in the operating system when the BIOS messed things up like that.

What we should do is to prevent amdgpu from crashing so badly, e.g. allow to cleanly continue with the working hardware even when one of the devices doesn't work.

when I load in amdgpu, everything froze, so I don't have the log.
You can work around that using netconsole, see Documentation/networking/netconsole.txt.

Going to try to fix that by just using the screen shot you send earlier, but it would be better if I can get a full log.

Regards,
Christian.

Am 19.02.2018 um 12:55 schrieb Joseph Wang:
Here is the lspci without amdgpu loaded.  when I load in amdgpu, everything froze, so I don't have the log.


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