[BUG] linux-firmware-amdgpu 20260622 prevents clean poweroff on AMD RX 6800

[BUG] linux-firmware-amdgpu 20260622 prevents clean poweroff on AMD RX 6800

[IT4roundtheW0rd]

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Hi,

I'd like to report a regression in linux-firmware-amdgpu introduced with the 20260622 release.

System:
- Distro: CachyOS
- Kernel: 7.1.1-2-cachyos
- GPU: AMD RX 6800-series
- Bootloader: GRUB

Problem:
After updating linux-firmware-amdgpu from 1:20260519-1 to 1:20260622-1, the system no longer shuts down completely when running `poweroff`. Fans, keyboard LEDs, and power button LED remain active after the shutdown sequence. The system hangs after "Sending SIGTERM to remaining processes..." and never reaches full power-off (ACPI S5).

Relevant log excerpt (journalctl -b -1):

Jun 27 02:04:14 cachyos systemd-shutdown[1]: Sending SIGTERM to remaining processes...

(no further entries — system hangs here)

Workaround:
Downgrading to linux-firmware-amdgpu 1:20260519-1 resolves the issue completely.

Steps to reproduce:
1. Update linux-firmware-amdgpu to 1:20260622-1
2. Run `poweroff`
3. System hangs — power is not cut

Additional notes:
The root cause appears to be that the new firmware blob prevents the amdgpu driver from cleanly releasing the GPU before the ACPI S5 power state transition. No other packages were updated in the same transaction that could explain this behavior.

This issue was researched and this report was drafted with the assistance of Claude (Anthropic AI).

Best regards,

Benjamin Maas

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Re: [BUG] linux-firmware-amdgpu 20260622 prevents clean poweroff on AMD RX 6800

[Thorsten Leemhuis]

[adding a few people to the CC]

On 6/27/26 02:42, IT4roundtheW0rd wrote:
> 
> I'd like to report a regression in linux-firmware-amdgpu introduced with
> the 20260622 release.
> 
> *System:*
> - Distro: CachyOS
> - Kernel: 7.1.1-2-cachyos
> - GPU: AMD RX 6800-series
> - Bootloader: GRUB
> 
> *Problem:*
> After updating linux-firmware-amdgpu from 1:20260519-1 to 1:20260622-1,
> the system no longer shuts down completely when running `poweroff`.
> Fans, keyboard LEDs, and power button LED remain active after the
> shutdown sequence. The system hangs after "Sending SIGTERM to remaining
> processes..." and never reaches full power-off (ACPI *S5).*

A few questions:

* Which firmware files does your GPU use exactly (a full dmesg log
should answer this)
* Does the problem happen with a vanilla kernel as well (it most likely
will, but would be good to confirm, as heavily patched vendor kernels
can lead to all sort of issues).

Ciao, Thorsten

> *Relevant log excerpt (journalctl -b -1):*
> 
>     Jun 27 02:04:14 cachyos systemd-shutdown[1]: Sending SIGTERM to
> remaining processes...
> 
> (no further entries — system hangs here)
> 
> *Workaround:*
> Downgrading to linux-firmware-amdgpu 1:20260519-1 resolves the issue
> completely.
> 
> *Steps to reproduce:*
> 1. Update linux-firmware-amdgpu to 1:20260622-1
> 2. Run `poweroff`
> 3. System hangs — power is not cut
> 
> *Additional notes:*
> The root cause appears to be that the new firmware blob prevents the
> amdgpu driver from cleanly releasing the GPU before the ACPI S5 power
> state transition. No other packages were updated in the same transaction
> that could explain this behavior.
> 
> This issue was researched and this report was drafted with the
> assistance of Claude (Anthropic AI).
> 
> Best regards,
> 
> Benjamin Maas 

Re: [BUG] linux-firmware-amdgpu 20260622 prevents clean poweroff on AMD RX 6800

[Harris Landgarten]

It is unlikely that it is the firmware. I had the same issue and it started with 7.1-rc2. I am running gfx1150. The issue appears to have been fixed by 7.2-rc1
Sent from my iPhone

> On Jul 2, 2026, at 4:07 AM, Thorsten Leemhuis <regressions@leemhuis.info> wrote:
> 
> [adding a few people to the CC]
> 
> On 6/27/26 02:42, IT4roundtheW0rd wrote:
> >
> > I'd like to report a regression in linux-firmware-amdgpu introduced with
> > the 20260622 release.
> >
> > *System:*
> > - Distro: CachyOS
> > - Kernel: 7.1.1-2-cachyos
> > - GPU: AMD RX 6800-series
> > - Bootloader: GRUB
> >
> > *Problem:*
> > After updating linux-firmware-amdgpu from 1:20260519-1 to 1:20260622-1,
> > the system no longer shuts down completely when running `poweroff`.
> > Fans, keyboard LEDs, and power button LED remain active after the
> > shutdown sequence. The system hangs after "Sending SIGTERM to remaining
> > processes..." and never reaches full power-off (ACPI *S5).*
> 
> A few questions:
> 
> * Which firmware files does your GPU use exactly (a full dmesg log
> should answer this)
> * Does the problem happen with a vanilla kernel as well (it most likely
> will, but would be good to confirm, as heavily patched vendor kernels
> can lead to all sort of issues).
> 
> Ciao, Thorsten
> 
> > *Relevant log excerpt (journalctl -b -1):*
> >
> >     Jun 27 02:04:14 cachyos systemd-shutdown[1]: Sending SIGTERM to
> > remaining processes...
> >
> > (no further entries — system hangs here)
> >
> > *Workaround:*
> > Downgrading to linux-firmware-amdgpu 1:20260519-1 resolves the issue
> > completely.
> >
> > *Steps to reproduce:*
> > 1. Update linux-firmware-amdgpu to 1:20260622-1
> > 2. Run `poweroff`
> > 3. System hangs — power is not cut
> >
> > *Additional notes:*
> > The root cause appears to be that the new firmware blob prevents the
> > amdgpu driver from cleanly releasing the GPU before the ACPI S5 power
> > state transition. No other packages were updated in the same transaction
> > that could explain this behavior.
> >
> > This issue was researched and this report was drafted with the
> > assistance of Claude (Anthropic AI).
> >
> > Best regards,
> >
> > Benjamin Maas 
>