[Issue]: CrossAttnDownBlock2D object has no attribute "info" error with HiDiffusion

[MysticDaedra]

Issue Description

When creating an image Detailer and HiDiffusion, an error is displayed and generation is terminated:

AttributeError: 'CrossAttnDownBlock2D' object has no attribute 'info'

Disabling HiDiffusion at this point does nothing, and most of the time requires a restart of SDNext, as all subsequent generations (including with Detailer disabled) will have this error. Once, I did manage to simply reload the model, but most of the time it seems to require a full restart.

Running with HiDiffusion disabled allows Detailer to function, but requires either generating lower resolution images or using Hires Fix.

sdnext.log

Version Platform Description

Windows 11 Professional
Mozilla Firefox 146.0.1
Dev branch f4b592a
AMD RX 9070 XT, Adrenalin 25.9.1
Python 3.12.10
ROCm 7.2
HIP 7.2.53150-93a0a375e8

Relevant log output

See attached log file.

Backend

Diffusers

Compute

AMD ROCm

Interface

ModernUI

Branch

Dev

Model

StableDiffusion 1.5/2.1/XL

Acknowledgements

• I have read the above and searched for existing issues
• I confirm that this is classified correctly and its not an extension issue

[vladmandic]

is this reproducible at will or random? i need exact reproduction steps since the log itself is not sufficient to pinpoint the cause.

[MysticDaedra]

This is reproducible. Every single time I load up SDNext (after an update, I'll say, either 1/5 or 1/4 or something like that, today is the first time I've experienced this issue) and start a generation with Detailer and HiDiffusion, this error appears. It works just fine without Detailer (or without HiDiffusion, either way), but using both together always produces this error for me.

Note: HyperTile was on, I forgot to turn it off. I'm not sure if that would have an effect.

Error appears with LoRAs and without, seems to make no difference.

All settings identical, HiDiffusion+Detailer = error. HiDiffusion by itself with no Detailer: works fine. Detailer with no HiDiffusion: Works fine. All other settings the same between both generations.

I don't know if it is related, but just to highlight, I am using ROCm with Windows, not WSL or native Linux.

Steps to reproduce:

1. Start SDNext.
2. Create prompt, set resolution (I've been using 1024x1536), set sampler and guidance.
3. Set/check detailer settings, using same sampler etc (error persisted whether I messed with detailer settings or used default after restarting SDNext and the webui)
4. Turn on HiDiffusion/ensure HiDiffusion is enabled
5. Enable Detailer
6. Click Generate.
7. Image will generate, VAE will decode, then when it switches to Detailer, the error is displayed in the console.
8. Rarely, reloading model will allow generations to work after disabling HiDiffusion or Detailer, but usually restarting SDNext is required.
9. What works is using either detailer, or hidiffusion, but never both at the same time.

[vladmandic]

i cannot reproduce. i tried changing hidiffusion params as well as detailer params and still nothing.
which means i need exact step-by-step including all params. e.g. i see you're using 2048 as detailer resolution, that is anything but normal.

[MysticDaedra]

Here are my exact settings. I already gave you the step-by-step, the above things are the steps I took exactly, causing the error. But here are the settings in detail (tbh I thought these were included in the log, otherwise I'd have included them in the original report):

Prompts Tab:

Sampler Tab:

Guidance Tab:

Refine Tab: Disabled, Refine sampler set to SA Sampler, same as main sampler, for Detailer.

Detail Tab:

Advanced Tab:

Nothing used in either Adapters or Scripts.

Here are my settings. Do I need to do this every time I make a report? Because tbh, this is kinda exhausting :( an envvar or something to append these to the log might be a good idea.

Model Loading:

Model Options:

Model Offloading:

Model Quantization: Disabled

Variational Auto Encoder:

Text Encoder:

Compute Settings:

Backend Settings:

Pipeline Modifiers (note that the only modifers enabled/used are HyperTile and HiDiffusion):

Model Compile:

Live Previews:

Postprocessing:

Hopefully this helps, let me know if there's any other info you need.

[vladmandic]

i'm not sure if you're trying to be sarcastic or? yes, everything is in log. and it takes me a lot of time to analyze everything - so instead of me pushing issue to the side and ignoring it, i ask questions in order to converge to something. this is not really motivating me. remember this is free and open source, i'm not paid to do support.

[MysticDaedra]

Apologies, it was late and I was tired. I do appreciate everything you've done and continue to do for this community.

[vladmandic]

ok, moving on...
hidiffusion is a nightmare to remove once applied, up to a point i pretty much give up. so once applied and if you want to unapply it, you'll need to reload a model.
on the other hand, i've improved compatibility of hidiffusion so now it works with detailer and most other pipelines.