[Bug 209159] New: AMD Vega 20 framebuffer switch fails on 5.9rc2+

[Bug 209159] New: AMD Vega 20 framebuffer switch fails on 5.9rc2+

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209159

            Bug ID: 209159
           Summary: AMD Vega 20 framebuffer switch fails on 5.9rc2+
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.9-rc2/3
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: ryan@testtoast.com
        Regression: No

Created attachment 292349
  --> https://bugzilla.kernel.org/attachment.cgi?id=292349&action=edit
lspci

Vega 20 (Radeon VII) on X99 platform - boot freezes during FB switch. Booting
without quiet and with earlyprintk=efi,keep shows a stall immediately after

...
[    1.941238] AMD-Vi: AMD IOMMUv2 driver by Joerg Roedel <jroedel@suse.de>
[    1.941239] AMD-Vi: AMD IOMMUv2 functionality not available on this system
[    1.948454] nvme nvme0: 20/0/0 default/read/poll queues
[    1.953176]  nvme0n1: p1 p2 p3 p4 p5 p6 p7
[    1.956313] usb 1-14: new full-speed USB device number 5 using xhci_hcd
[    1.989790] [drm] amdgpu kernel modesetting enabled.
[    1.989849] CRAT table not found
[    1.989850] Virtual CRAT table created for CPU
[    1.989857] amdgpu: Topology: Add CPU node
[    2.006244] checking generic (c0000000 300000) vs hw (c0000000 10000000)
[    2.006246] fb0: switching to amdgpudrmfb from EFI VGA


On -rc1 boot continues normally with
...
[    2.006315] amdgpu 0000:67:00.0: vgaarb: deactivate vga console
[    2.006345] amdgpu 0000:67:00.0: enabling device (0106 -> 0107)
[    2.006408] [drm] initializing kernel modesetting (VEGA20 0x1002:0x66AF
0x1002:0x081E 0xC1).
...

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[Bug 209159] AMD Vega 20 framebuffer switch fails on 5.9rc2+

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209159

Alex Deucher (alexdeucher@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com

--- Comment #1 from Alex Deucher (alexdeucher@gmail.com) ---
Please attach your full dmesg output.  Can you bisect?

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[Bug 209159] AMD Vega 20 framebuffer switch fails on 5.9rc2+

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209159

--- Comment #2 from ryan@testtoast.com ---
Created attachment 292367
  --> https://bugzilla.kernel.org/attachment.cgi?id=292367&action=edit
dmesg

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[Bug 209159] AMD Vega 20 framebuffer switch fails on 5.9rc2+

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209159

--- Comment #3 from ryan@testtoast.com ---
Thanks, sorry had to bypass LUKS to get the whole thing. This looks bad, looks
like the firmware upload to the card is failing. It is also happening on all my
installed kernels sorry, including the Fedora provided 5.8 series. Bad
hardware?

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[Bug 209159] AMD Vega 20 framebuffer switch fails on 5.9rc2+

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=209159

ryan@testtoast.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |INVALID

--- Comment #4 from ryan@testtoast.com ---
Whoops seems this was PEBKAC, I'd previously overridden (and forgot about
overriding) my dracut.conf to load a specific firmware version and when that
fell off the bottom of the kernel rotation, obviously it didn't load into my
initrd and failed. Cleared that and all well, sorry for the noise.

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