Intermittent loss of volume control
Roku Ultra [HD-4K HRD]. I have two of these devices, both of them will intermittently lose the ability adjust the audio volume and power-off the TV. Both of these are of different manufactures [LG (CEC enabled) & Visio (IR only)].
I've experienced this issue when viewing live TV or when viewing live or recorded TV from AT&T's DirectTV Stream. I have manually searched for firmware updates, but my device reports that it is up to date.
This issue started occurring about 1 or 2 days ago. To try and overcome this issue, there are a few things I can do, but this temporarily fix, this issue reoccur: (1) Access the TV Guide then got back to the live TV station, (2) On the Remote, switch the audio voice control from on to off, (3) wait several seconds and retry the volume up/down button, (4) remove the power from the Rou device for 10 seconds then reattach the power.