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Brightness adjustment disappears when switching to discrete graphics via MUX Switch

Hera
Level 7

Hello ASUS Support Team,
I am experiencing an issue with my ASUS ROG Zephyrus G16 (GU603ZV) laptop. When I activate the discrete graphics through the MUX Switch, the ability to adjust the screen brightness disappears. The brightness is locked at a specific level, and adjusting it via function keys or Windows settings does not work.
I have recorded a video demonstrating the issue and attached a log for analysis. The video can be accessed via the Google Drive link: [ https://drive.google.com/drive/folders/1rh3df8Qr7HE1MK2EGWJbUrV5U_zv3qWt?usp=drive_link ] I have also attached the log that describes the situation in detail.
I kindly request your assistance in resolving this issue and providing a solution.
Thank you in advance for your help!

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2 REPLIES 2

Hera
Level 7

Good afternoon, the issue has not been resolved. The laptop is unusable after updating VBIOS in MyASUS.1738584269252_3_11zon.jpg1738584269246_2_11zon.jpg1738584269260_1_11zon.jpg

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