Hi all,
With both the original SD card image and the new one releasesd a few days ago, I get a lot of flicker in the HDMI output. The problem is sporadic and kind of rare if the Parallella is idle, but if you put full load on the CPU, the screen flickers rather constantly, up to once every few seconds, and more. Rather unusable that way. I think it's worse after running any of the epiphany sampes, but I'm not sure.
I use BOINC / Einstein@Home to put load on the CPU cores. I use a TV for HDMI output, FWIW, at HD resolution.
Is it just my Parallella board (rev 1) or are others seeing this as well? It's not a big issue for me since I use SSH or VNC to access the board most of the time, but others might be affected more badly.
To reproduce the problem, I suggest the following:
1) put your board under full CPU load (both cores).
Does it flicker?
2) run one of the epiphany examples, e.g, matmul .
Does flickering start now (even after the Epiphany process has finished).
Cheers
HB