--- On Tue, 2/24/09, Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote: > > Steps: > > - Boot into Fedora 10 Live CD (obviously, into the > default graphical mode) > > - Install Powertop (yum install powertop) and run it > > - I get about 60 wakeups per second from i915@xxxxxxx > leaving the system > > idle - Switch to console and back to X. The wakeups > are gone. > > Ah ok, it sounds like you're getting vblank interrupts > at startup time, but > once you VT switch the kernel figures out that you > don't need them, so it > disables them. I think this is a bug in the 2D driver; it > has an ioctl it > uses when doing modesetting which doubles as a > "disabling the irq is ok" > signal, but we call it at a time when the corresponding > pipe is off, so the > kernel ignores the call. Yes, that's what E. Anholt supposed too. > > Can you file a bug for this at bugs.freedesktop.org? Is it > easy for you to > rebuild & test xf86-video-intel driver patches? I filed the report: http://bugs.freedesktop.org/show_bug.cgi?id=20296 Sure, I guess I can manage to patch the Intel driver and test it. I'm using 2.4.3 now, so maybe one thing I could do first is to try 2.5.x. > > Thanks, > -- > Jesse Barnes, Intel Open Source Technology Center Thanks, Alberto. -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
