Comment 2 for bug 1892427

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Daniel van Vugt (vanvugt) wrote : Re: HDMI connected monitor wakeup problems

This sounds like two separate issues:

1. Needing to wake the TV with the remote. I would hazard a guess that's a feature/bug of the TV firmware. TVs generally don't expect to be used as monitors and may not implement power mode switching reliably like a proper monitor. Most likely it's designed to respond to the remote only. I don't think this is a software bug in Ubuntu, but probably in the TV itself...

2. Windows get moved and resized. This should only happen if the monitor (TV) is seen to be unplugged. But indeed sometimes power saving modes do get confused for the monitor being unplugged. I wonder though if this is also a problem with the TV failing to sleep correctly and instead disconnecting from the computer... Can you test a (non-TV) monitor on the same HDMI port?