v6.11-rc4 amdgpu regression from v6.10.0

[Andrew Worsley]

On Tue, 20 Aug 2024 at 00:13, Alex Deucher <alexdeucher at gmail.com> wrote:
>
> On Mon, Aug 19, 2024 at 9:55 AM Andrew Worsley <amworsley at gmail.com> wrote:
> >
> > The v6.11-rc4 linux hangs during amdgpu start up where as the v6.10.0
> > is fine. I had to take a photo of the screen (see attachment) from
.....
> > amdgpu 0000:c1:00.0: Direct firmware load for
> > amdgpu/gc_11_0_1_mes_2.bin failed with error -2
> > amdgpu 0000:c1:00.0: amdgpu: try to fall back to amdgpu/gc_11_0_1_mes.bin
>
> -2 is -ENOENT which means the driver was not able to find the
> firmware.  I suspect you either didn't include the firmware in your
> kernel image (if you are building the driver in), or didn't include
> the firmware in your initrd (if the driver was built as a module).

  I wondered that but as the exact same message occurs on v6.10 and it's fine I
don't think that is the problem. See below

 The other question is why does it hang? - No other messages or anything.
I was thinking it switched to another frame buffer and crashed and
couldn't display the message?

I guess I could try and get the netconsole going to capture the crash?

> Alex
>
> >
> >   *** Hangs with this displayed on the console ****
> >     - have to power off computer to recover
> >
> > Perfectly successful boot with v6.10.0 kernel :
> >
.....
> > [    2.502588] amdgpu 0000:c1:00.0: [drm:jpeg_v4_0_early_init
> > [amdgpu]] JPEG decode is enabled in VM mode
> > [    2.503426] amdgpu 0000:c1:00.0: Direct firmware load for
> > amdgpu/gc_11_0_1_mes_2.bin failed with error -2
> > [    2.504043] [drm] try to fall back to amdgpu/gc_11_0_1_mes.bin
> > [    2.505117] Console: switching to colour dummy device 80x25
> > [    2.505144] amdgpu 0000:c1:00.0: vgaarb: deactivate vga console
> > [    2.505147] amdgpu 0000:c1:00.0: amdgpu: Trusted Memory Zone (TMZ)
> > feature enabled
....