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SN65DP149: SN65DP149: DDC operation

Part Number: SN65DP149

Greetings!

I'm using the SN65DP149 as DP++ to DVI retimer, but right now I'm stuck with DDC problem. GPU is trying to reach the display through I2C, but on display's side is silence - constant 5V. Not even a single bit.  I'm attaching shematic.

What can cause such behavior?