Exactly the same issue with my Roku 4 connected to my Pioneer PDP5070HD 50" plasma. The multi-key-press workaround works, but that is ridiculous to use devices that otherwise work perfectly. Roku, you must fix this bug! If I set my Roku for 720P, I expect it to stay at 720P until I tell it otherwise.
Roku 4 Software version: 8.0.0 Build: 4128 Last updated: Dec 21, 2017, 9:31pm
Check for updates tells me that there are no updates available.
I have a Roku 3 and my 1080 - 720 problem is slightly different, but I believe it is related. When I power on the TV and go to Settings > Display type, there is no “TV/Monitor” image displayed and no information about the display. At that point, the Roku 3 hangs. After a minute or two it reboots. If I then go to Settings > Display type, there is an “TV/Monitor” image displayed along with the text “Detected: 1080p HDCP 1.4.” If I press the right arrow, a check mark is displayed beside “Auto detect.”
I can then choose either 720p or 1080p, go through the confirmation process, and at the end there will be a check mark beside which ever resolution I have chosen. The selected resolution will remain until the TV is turned off. When the TV is turned on again, Roku will hang when I go to Settings > Display type and eventually reboot.
If I navigate from Home to one of my channels instead of going to Setting > Display type when I turn on the TV, I can highlight that channel. However, pressing OK will not activate the channel and after that none of the keys on the remote has any effect. After a minute or two, the unit will reboot and a check mark will be displayed next to “Auto detect.”
Software version: 8.0.0 Build: 4143 Model: 4200X - Roku 3 Serial Number: 1GS3AK011323 TV: Panasonic Viera Plasma TC-P50ST30 AV Receiver: Yamaha RX-v471
After checking for an update everyday for the last few months, was finally able to get a permanent fix for this issue: swapped out the Roku for a FireTV stick and now I have Plex and Amazon video again with no resolution issues
bit of a troll post, but doesn't make it any less true...
I'm still stuck with this issue. I use my Roku through a Yamaha receiver, then into a Optoma projector. The projector CAN handle 1080p, but it's not at the correct distance for my screen. So, I am required to use the Roku at 720p. However, every time I turn it on, it defaults to "Auto-Detect" and then sets itself to 1080p. Is there a way that I can disable the auto-detect? Model: 4400X Serial: 4U9662601903