Comment 72 for bug 221119

Okay, I think this bug report has strayed too much from the original bug report.

I suspect the title of this bug report has been too misleading. "overrun on pipe B!" is a very common error message. Basically, your Intel graphics card has two pipes (called 'crtc's) through which it can feed video data. You can configure what outputs it goes to, e.g. one to VGA-0 or LVDS, the other to TV-Out or DVI-0. Or whatever. So, as I understand it, if for some reason it is sending data down a pipe and it's not getting picked up, that's an "overrun". As you can imagine, this can happen for a whole host of different reasons.

Anyway, I don't know whether the various commenters are seeing the same issue or separate ones. You can judge that yourself... compare your video card (even down to the PCI ID's) to the original reporter, make sure your symptoms match theirs exactly, and that you have the same display configuration. If that all matches, then yeah you probably have the same bug. If not, well probably you should file a new bug. If in doubt, file a new bug and reference this one, and someone more knowledgeable can make the call on if it's a dupe or if your issue needs investigation in its own right.

I'm out of clue myself on what else to try. So I've filed JD's original issue upstream at https://bugs.freedesktop.org/show_bug.cgi?id=19495 . JD - please subscribe to this bug report in case upstream needs more information or wishes you to test something. Thanks ahead of time.