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2007 Honda CRV Dashboard, electronic display malfunction

The electronic display that normally faithfully reports mileage, temperature, amount of gas, etc. is now showing something that looks like Klingon. If you use the small knob on the lower right that toggles options the Klingon changes, but does not become normal. This happened a few several months ago, but it self-repaired in a day or so. It’s now been a few days; suggestions on what might be wrong? Is this common?