[Bug 104737] amdgpu module does not bind to 1002:6660 R5 M330

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104737

--- Comment #1 from Tj <0.freedesktop at iam.tj> ---
I helped this user for several hours in #ubuntu IRc support diagnosing this
issue.

It's:

DMI: HP HP Notebook/81EC, BIOS F.23 12/01/2016

with integrated Intel and AMD GPUs.

We fetched the latest firmware for amdgpu/raven* from the linux-firmware repo.
We tested the stock Ubuntu v4.13 kernel and the latest mainline build of
v4.15-rc8. 

In neither case would the amdgpu module bind to the GPU despite it declaring a
matching modalias. The radeon driver did bind. We blacklisted radeon but could
not get amdgpu to bind. There was nothing in the kernel log to indicate amdgpu
even 'looked' at the GPU.


gopal at gopal-HP-Notebook:~$ lspci -nnvvk -d ::0380 
01:00.0 Display controller [0380]: Advanced Micro Devices, Inc. [AMD/ATI] Sun
XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430 / R7 M520] [1002:6660] (rev
83)
        Subsystem: Hewlett-Packard Company Sun XT [Radeon HD 8670A/8670M/8690M
/ R5 M330] [103c:81ec]
        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-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 126
        Region 0: Memory at 90000000 (64-bit, prefetchable) [size=256M]
        Region 2: Memory at b1300000 (64-bit, non-prefetchable) [size=256K]
        Region 4: I/O ports at 4000 [size=256]
        Expansion ROM at b1340000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: radeon
        Kernel modules: radeon, amdgpu


dmesg log (when radeon driver binds) @ https://paste.ubuntu.com/26432143/

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