@Smooch
Short answer: see third paragraph
There may or may not be problem with SiriusXM's memory management. With the theory that something is consuming too much memory before SiriusXM is launched, I considered removing channels from Roku. However, these icons should normally only consume minimal amounts of memory. If you launch XM but select no channels to play, it will sit and wait for hours without crashing. If you launch XM, select channel 27 for example and after 19 minutes, back out and select another channel briefly and then back out of that channel and select 27 again, XM does not crash as long you change channels on time. I tested this in five cycles with no crash until I was late on the last 19 minutes and it crashed because it only consumes whatever it needs while playing a channel until it hits a limit. It releases that resource when you exit that specific XM channel. This theory explains why you can play channels where the show length equals the track length on high numbered channels. It does not exhaust whatever resource it needs on shorter timeframe channels. I am guessing XM is trying to buffer the audio for fast-forward and rewind.
There have been multiple universal suggestions of turn everything off/on and cross your fingers. However, I didn't see any reference about logging out of Roku and starting over. There's a reason no one suggested that. Such an option does not exist per se. You can do a factory reset which will dissociate your device from your Roku account and possibly delete some data from your account. If you have only one device, it might delete your account. I have 3 devices each with the timeout feature. When you remove a channel from one device, it is also deleted from any other devices for the same account. Manually removing channels would be tedious so I went with the easy path.
The factory reset for the 3800X fixed the timeout issue. Post reset, XM ran for 1.5 hours before crashing out. I do not know if this workaround will fix my 3930X or 3900R. Your mileage may vary. This reset on TVs might delete more than you prefer. See below for reset doc,
https://support.roku.com/article/208757008
Some exception condition may have occurred on at least one device on my account—and others--in the last 4 years that corrupted either my profile stored on Roku servers or some other data stored locally on the 3800x et al. Currently some process within Roku-land has to tell the application program how much memory is available so that it does not crash. I am presuming SiriusXM app was given incorrect data and relied on this data to our detriment. Defensive programming on SiriusXM’s part would be to double check the memory available before it begins playing one of it's channels. If the SiriusXM app were already testing for available memory, my reset would not have changed the outcome.
For the future, QA should not test with a clean Roku device with only the channel they are working on. Instead, the device should have a longer history of use so that it can retain corrupted data caused by Roku bugs that were never cleaned up.
This exposure to corruption is why Roku cannot reproduce the error. Roku could verify that the memory calculation value sent to the channel provider is accurate. By default, the current SiriusXM code rudely finds the problem. No SiriusXM code was modified for this workaround so XM may be more innocent than Roku.
Edit: added link to factory reset
