[Bug 105887] [GLK] no signal after switch resolution from 1080p at 23.98

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105887

--- Comment #68 from Clinton Taylor <clinton.a.taylor at intel.com> ---
After bashing my head against he wall for several days I have finally
determined that the issue is caused by the HDMI level shifter on the board and
not a driver issue. 

After changing the mode from 1080p24 to 1080p50 the scope shows a valid clock
into the level shifter and a very low amplitude clock on the output to the
connector. Adding a short delay after the Transcoder is disabled appears to
solve the issue with the level shifter.

I have attached a scope shot of the waveform into the level shifter (yellow
trace) and the output to the connector (blue trace).

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