Control: tags -1 + moreinfo

Hi,

On Sat, Sep 06, 2025 at 08:54:25PM +0200, Salvatore Bonaccorso wrote:
> Hi
> 
> On Thu, Aug 28, 2025 at 11:57:39AM +0300, kuu wrote:
> > Package: linux-image-amd64
> > Version: 6.16.3-1
> > Severity: important
> > Tags: upstream
> > X-Debbugs-Cc: [email protected]
> > 
> > Dear Maintainer,
> > 
> > *** Reporter, please consider answering these questions, where appropriate 
> > ***
> > 
> >    * What led up to the situation?
> > The user is having system freezes with their AMD Radeon RX 7600M XT GPU on a
> > Debian trixie system. The problem manifests as a full system freeze, 
> > typically
> > after a few hours or days of uptime. The freeze is preceded by specific 
> > errors
> > at boot time.
> > 
> >    * What exactly did you do (or not do) that was effective (or
> >      ineffective)?
> > 
> > Ineffective actions:
> > 
> >     Using the default Debian trixie kernel (6.12 series). This resulted in a
> > system freeze.
> > 
> >     Upgrading to the latest official unstable (sid) kernel (6.16.3+1) and 
> > the
> > latest firmware-amd-graphics package. This also resulted in a system freeze.
> > 
> >     Adding the kernel parameters amdgpu.powerplay=0 and amdgpu.noretry=0 did
> > not resolve the issue.
> > 
> > Effective action:
> > 
> >     Installing and using the Liquorix kernel (6.16.3-1-liquorix-amd64). This
> > kernel works perfectly and has not resulted in any system freezes.
> > 
> > 
> >    * What was the outcome of this action?
> > 
> > When using the official Debian kernels (6.12 or 6.16), the following errors
> > appear at boot:
> > 
> >     REG_WAIT timeout
> > 
> >     hub6-0:1.0: config failed, hub doesn't have any ports
> > 
> > These boot errors serve as a direct precursor to the system freeze that 
> > occurs
> > later.
> > When using the Liquorix kernel (6.16.3-1-liquorix-amd64), these boot errors 
> > do
> > not appear, and the system remains stable indefinitely.
> > 
> > 
> >    * What outcome did you expect instead?
> > 
> > The user expected the official Debian 6.16 kernel, paired with the latest
> > firmware, to work as reliably as the Liquorix kernel of the same version, 
> > and
> > for the boot errors and subsequent freezes to be gone. The expectation was 
> > that
> > the bug would be fixed in a newer kernel version, which was not the case 
> > with
> > the official build.
> 
> A side note: liquorix seems to have a quite patched kernel (with a
> single big patch?) I think the best you can do here is to ask the
> liquorix developers to forward their fixes so they land in upstream.

One thing we might do here from Debian side is the following:

Please provide full boot logs in both variants. I understand that the
sytsem freezes, if that is a complete system freeze and the ssytem is
not accessible anymore via network to gather the log, then pease use a
netconsole.

Once we have both boot logs we could have a look on spotted
differences.

Regards,
Salvatore

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