Receive Transceiver clock recovery problem without loopback

Thanks for your help, I really appreciate it!

Today I played around with the altgx and altgx_reconfig megafunctions, trying to reconfigure them with different parameters etc... nothing worked.

I only have sketchy cables around, I will have to buy new ones. When looking at the clk2_p clock with the scope I don't see any meaningful signal (only something that looks like noise), so the cables probably don't do the job...

I will also implement a "clock measuring logic" as you suggested, maybe it will show some obvious problem, like very different clock frequencies. The way I did this in previous designs is simply by incrementing a counter at every clock cycle of the clock I want to measure, and then look at a SignalTap waveform sampled at the 50MHz clock, and do some math...

I hope I can get it to work soon... I'll let you know how these things go.