On Thu, 20 Oct 2016, David Weinehall <tao@xxxxxxxxxx> wrote: > On Thu, Oct 20, 2016 at 03:28:10PM +0300, Jani Nikula wrote: >> On Thu, 20 Oct 2016, Nicolae Rosia <nicolae.rosia.oss@xxxxxxxxx> wrote: >> > Monitor hotplugging seems to be broken on latest 4.1/4.4 RT kernel with i915. >> > I have tested this on non-RT kernel and it works. > > The answer to your first question seems to be here :) *blush* >> > I get an udev event for unplugging, but there's no event generated for >> > plugging the monitor back in. >> >> Does it work on non-RT? Does it work on v4.8 or v4.9-rc1? > > The second one is relevant though. 4.1 is pre-historic, 4.4 is ancient. I think the honest answer here is that we do not have the resources to debug RT vs. non-RT issues all that much in general, and especially not for such old kernels. RT is not in our focus, and hotplug has proved to be hard enough on non-RT. Nothing to be proud of, but we have 500+ bugs open over at the freedesktop.org bugzilla, most for relatively recent non-RT kernels. Even if we fixed this upstream (and it would have to be fixed upstream to be backported) it's a huge problem that the feedback loop for RT kernels has such a long delay. If we break something for RT, it takes forever for us to find out. BR, Jani. -- Jani Nikula, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
