powerd broken

Robert Noland rnoland at FreeBSD.org
Fri Apr 3 17:00:50 UTC 2009

On Fri, 2009-04-03 at 11:43 +0200, Dominic Fandrey wrote:
> Alexander Motin wrote:
> > Dominic Fandrey wrote:
> >> I can rule out drm0 as the cause, because uhci0 is the only common
> >> presence in all occurrences of this problem. 
> > 
> > You have other examples? If you mean "irq16: hdac0 uhci+" string, then
> > "+" there means "and some other devices", which in this case is probably
> > drm0.
> > 
> > There were some drm related commits last time and there are also some
> > IRQ related problems were reported/patched in CURRENT recently. So I
> > would not ignore this possibility without additional testing.
> > 
> Is there anything I can do, apart from turning off drm? This is really
> annoying (well, it eats a whole core while I'm compiling and it keeps
> the fans going, when the machine should be idle).
> Is there somehow I can generate useful information? Someone to send a
> kernel dump to?

Use a radeon? ;(

I've been working on the Intel vblank / irq issues.  Every time I commit
something thinking that I have it resolved, it isn't.  So I'm waiting on
hardware to arrive that will let me test this all more thoroughly.  I do
have a patch that I think fixes most of the issues on Intel, but the ddx
driver is still doing some silly things that cause issues in some cases.
I *think* the only outstanding issue I have with Intel is if something
is rendering (synced to vblank or not) when the display goes into dpms
sleep, there isn't anything to block that app, so it renders as hard as
it can even though it isn't being displayed.  In reality, this probably
isn't a huge issue, but running gears while the display is asleep keeps
the cpu at 100%, which isn't ideal.  Normal apps that aren't trying to
draw as fast as they can, shouldn't cause an issue.

The other issue with my current patches is that I had to change around a
fair amount of infrastructure code to try and fix Intel's brain damage,
so I have to finish fixing the rest of the drivers so they don't break.
I have Intel and radeon fixed, I just have to hit the more obscure


> _______________________________________________
> freebsd-stable at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-stable
> To unsubscribe, send any mail to "freebsd-stable-unsubscribe at freebsd.org"
Robert Noland <rnoland at FreeBSD.org>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 196 bytes
Desc: This is a digitally signed message part
Url : http://lists.freebsd.org/pipermail/freebsd-stable/attachments/20090403/6bdc01e9/attachment.pgp

More information about the freebsd-stable mailing list