[Bug 109635] [CI][BAT] igt at kms_chamelium@hdmi-crc|cmp-* - fail - Chamelium RPC call failed: RPC failed at server. <class 'chameleond.devices.input_flow.InputFlowError'>:Video input not stable

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109635

--- Comment #10 from emersion <contact at emersion.fr> ---
>I'm wondering if there's something faulty with the i2c lines on one of the chamelium boards in CI?(In reply to Stuart Summers from comment #3)
> The failure is basically saying the chamelium is trying to read an I2C slave
> address and never gets the expected value indicating the video input status
> reads stable. I'm wondering if there's something faulty with the i2c lines
> on one of the chamelium boards in CI? There are a couple of I2C related
> sightings open right now.

I believe this isn't an I2C issue.

The receiver on the Chamelium has an I2C register that indicates whether
there's a stable video signal received from the DUT. The Chamelium device will
wait for this register to indicate that video is stable. That is, it will poll
the register each second and check whether video is stable. If after 10 seconds
the register still indicates video isn't stable, the Chamelium server will give
up and report this error. So this isn't an I2C timeout, it's just the Chamelium
device not receiving stable video even after waiting for 10 seconds.

This error usually means that no data is received.

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