On Mon, 4 Jul 2016 15:25:27 -0400, Lester Petrie wrote: > Yes, I see this also. I have a Dell desktop with AMD graphics. I have > turned screen blanking off, so that my screen saver runs all the time > after my machine goes idle. I hadn't discovered that switching to a VT > and back would activate the screen. I will have to give that a try.
It seems to have come with the 4.6 kernel. I should have thought of trying this before (thanks to Tom Horsley in a thread on "Really excessive screen behavior" for reminding me!) but with kernel-4.5.7-300.fc24.x86_64, this doesn't arise. So for now I'm just back to booting to the older kernel. This doesn't seem to be the same as any of the other bugs I could find, so I've entered it as a new one, https://bugzilla.redhat.com/show_bug.cgi?id=1352719 I entered it for the kernel, though maybe it's really an X11 or driver bug. Someone with a lot more knowledge of the internals than I have will have to decide that. George
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