QWEN image with sage attention blank screen when using rtx 3090 fixed

[loudhippo840]

What happened?

i have found that when using qwen image with sage attention on my rtx 3090 i only get all black images generated, all of the solutions provided came down to "dont use sage attention" which resolved the issue but keeps me from using the speed increase offered by sage attention.

i have found in multiple instances that simply installing sageattention-2.2.0+cu128torch2.9.0andhigher.post4-cp39-abi3-win_amd64.whl fixes the problem and allows sage attention to work with qwen image on the rtx 3090.

downloaded from here

"https://github.com/woct0rdho/SageAttention/releases"

wanted to leave this here to let anyone else who is struggling with this issue know that there is a fix for us rtx 3090 owners.

i copied the wheel file to packages<package name>\venv\scripts\

open the virtual environment by using a command prompt in the packages<package name>\venv\scripts\ folder and ran

activate.bat

then i installed the wheel file by using the following command

pip install "sageattention-2.2.0+cu128torch2.9.0andhigher.post4-cp39-abi3-win_amd64.whl"

if you are on a different version of torch or cuda you would want to install the corresponding package based on the name which you can find by running

pip show torch

which will give output like the following

Name: torch Version: 2.9.0+cu128

Steps to reproduce

No response

Relevant logs

(venv) C:\Users\craig\AppData\Roaming\StabilityMatrix\Packages\ComfyUIreinstall\venv\Scripts>pip install "sageattention-2.2.0+cu128torch2.9.0andhigher.post4-cp39-abi3-win_amd64.whl"
Processing c:\users\craig\appdata\roaming\stabilitymatrix\packages\comfyuireinstall\venv\scripts\sageattention-2.2.0+cu128torch2.9.0andhigher.post4-cp39-abi3-win_amd64.whl
Installing collected packages: sageattention
  Attempting uninstall: sageattention
    Found existing installation: sageattention 2.2.0+cu128torch2.9.0.post3
    Uninstalling sageattention-2.2.0+cu128torch2.9.0.post3:
      Successfully uninstalled sageattention-2.2.0+cu128torch2.9.0.post3
Successfully installed sageattention-2.2.0+cu128torch2.9.0andhigher.post4

Version

2.15.4

What Operating System are you using?

Windows