Yes, HDMI from Bell to AVR, then HDMI from AVR to TV. I have 2 front, 1 center, and 2 rear surrounds and sub.
I have once again gone through all settings in the AVR and just cannot see what could be stopping it. On non HD channels I have SBR/SBL icons but as soon as I change to any HD content the disappear and a little red icon appears that is so small I cannot make out but seems like its an icon that shows something not working. If I put it on TMN (movie network) none of the movies play in surround in HD, so for example the latest Spiderman will not play in 5.1
OK, since you have 5.1 in your AVR set-up, do you have L/R surround speakers connected and turned on in your system OR "back" L/R surround connected and turned on? It looks to me, on the surface, that you might have the incorrect surround speakers connected and turned on in which case if a signal is present you won't hear anything. Your set-up in a 5.1 system should be "Front" L/R, center, LS, RS and the SBR/SBL speakers should be turned off, other wise the signal is being dispersed improperly or in your case, not at all. I believe that is why you are hearing the speakers in "all channel stereo" but not in 5.1 since if the wrong surround speakers are connected in Dolby Digital you won't hear anything in the "back" surround channels(i.e the way it looks like your connections are now). The DD signals would normally be directed towards the LS/RS if connected, those icons would light up on your AVRs panel NOT the SBR/SBL icons.
Check those connections as described above just to make sure. Your receiver, I believe, is a 9.2 potential set-up and you may have the wrong surround connections. In your model AVR the surround connections in a 5.1 system should be made to those connectors which are located to the extreme of each end on the back, NOT the back surround connections which are located more towards the middle.
If the above is the case, it is then just a matter of going in to the menu of the AVR to make sure the right speakers in use are connected correctly and turned on and the ones that aren't connected turned off.