Often, my iPad refuses to output stereo sound (to headphones). The right channel will either be completely mute or extremely quiet relative to the left channel. Sometimes it'll start working properly again if I go into and out of several different apps that have sound, but this doesn't always seem to work. Rebooting doesn't reset the sound. Toggling the accessibility mono feature does not help. I've tried many sets of headphones that proved to be working fine when plugged into other devices. Is this a hardware problem with my iPad, or a known software bug? Anyone else have this issue? And I didn't initially have this problem. I logged at least 10 hours of watching shows with no issue at all, but now it seems to happen almost every time I plug in headphones.