[Bug 110387] [CI][RESUME] igt at kms_chamelium@dp-crc-multiple - fail - Chamelium RPC call failed: RPC failed at server.*:DP FSM failed

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110387

Arek Hiler <arkadiusz.hiler at intel.com> changed:

           What    |Removed                     |Added
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           Priority|high                        |medium

--- Comment #3 from Arek Hiler <arkadiusz.hiler at intel.com> ---
This is quite likely test's fault. When the DP receiver on the chamelium side
needs its Finite State Machine handling due to mode/configuration changes it
signals that to us by sending hot-plug events. Then we need to do DPMS cycle.

Current implementations spawns a thread monitoring for those events, but that
seems to be prone to race conditions, and if we make XMLRPC call to chamelium
before it is done we can get this error.

We have to re-implement FSM handling at the call site, so whenever we get this
error we force the handling (or wait till the handling is done).

I have seen similar behavior on my local SKL too.

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