OS 9 is shutting down my HDMI out when the box goes to sleep. I have two Roku2 XSs (3100x's). Only one was hooked up. Things were working great and then they upgraded my software. I had to unplug and replug in my box each time after the upgrade if it'd been overnight. I though maybe my Roku2 XS went bad so I found my other one (was in a box from when I moved as I only need one now). I plugged it in and noticed the software upgrade was available. As soon as my second Roku2 XS took the software upgrade it has the same problem. I figured out if I unplug and plug back i just the HDMI cable then it works fine. Apparently, when my Roku2 XS sits for a long time (like overnight), the HDMI port disables. If I press the Roku remote, my TV turns on and the Roku2 XS white light flashes, but no video. If I press the remote buttons enough (like hold it down and make the white light blink), then eventually the Roku2 XS crashes, reboots (Roku logo screen), and the box is alright for watching Netflix, Hulu, whatever. This is what I do if I don't feel like getting out of bed and unplugging the HDMI briefly.
So, in short, OS9 disables the HDMI port on my Roku2 XS once sleep mode is entered. This can be reset by unplugging and replugging the HDMI port. Power cycling or crashing the box works also. They need to fix the OS so my HDMI port wakes on remote input.