drm, irqs, etc.

[Eric Anholt]

On Wed, 2003-11-05 at 21:24, Mike Hoskins wrote:
> first, i apologize...  i didn't think i'd get real answers on -questions
> so i'm posting this here.  i realize 5.x isn't really "stable" yet, but i
> hope it's close enough to be relevant.  ;)
> 
> i've got XFree86 4.3.0 installed, from the "X-4" meta port.  that went
> smoothly.  using the mga driver with a matrox g450 (dual head).  no dri on
> head 2 as expected, but again no obvious problems.
> 
> what i've noticed (this is 5.1-p8) is that after X has been running for
> awhile, trying to exit X causes a hang.  at first i thought it was some
> program under X not exiting properly (that's what it looks like), but i've
> reproduced the same behavior with nothing but X running.  if i start X and
> then exit immediately, everything is fine.  this seems to only happen
> after X runs for a week or more.
> 
> the one thing i noticed, was some "interesting" behavior wrt drm and it's
> claimed IRQ.  before starting X (after a reboot), `ps ax|grep irq` shows:
> 
>    19  ??  WL     0:00.00  (irq9: pcm0 acpi0)
>    20  ??  WL     0:00.10  (irq14: ata0)
>    21  ??  WL     0:00.00  (irq15: ata1)
>    22  ??  WL     0:00.00  (irq10: fxp0)
>    23  ??  WL     0:00.00  (irq6: fdc0)
>    24  ??  WL     0:00.01  (irq1: atkbd0)
> 
> the same from within X shows,
> 
>    19  ??  WL     0:00.00  (irq9: pcm0 acpi0)
>    20  ??  WL     0:01.05  (irq14: ata0)
>    21  ??  WL     0:00.00  (irq15: ata1)
>    22  ??  WL     0:00.02  (irq10: fxp0)
>    23  ??  WL     0:00.00  (irq6: fdc0)
>    24  ??  WL     0:00.08  (irq1: atkbd0)
>    25  ??  WL     0:00.09  (irq12: psm0)
>   690  ??  WL     0:00.12  (irq11: drm0)
> 
> and once exiting X (immediately, when it exits without hanging),
> 
>    19  ??  WL     0:00.00  (irq9: pcm0 acpi0)
>    20  ??  WL     0:01.04  (irq14: ata0)
>    21  ??  WL     0:00.00  (irq15: ata1)
>    22  ??  WL     0:00.02  (irq10: fxp0)
>    23  ??  WL     0:00.00  (irq6: fdc0)
>    24  ??  WL     0:00.07  (irq1: atkbd0)
>    25  ??  WL     0:00.06  (irq12: psm0)
>   690  ??  WL     0:00.08  (irq11:)
> 
> is irq11 not being freed?  or is that normal behavior?  i've double
> checked by X config, but i may have something wrong.  i've read various
> web pages and XFree's suggestions about configuring the g450...  but,
> again, i may have overlooked something.
> 
> this is a hard hang...  ctrl-alt-bkspc, ctrl-alt-del, etc. have no effect.
> i've since enabled "NoTrapSignals" in my X config hoping to get a core
> dump the next time it happens.  if i can manage that, i'll include it in a
> future report.  (or any other info you think is relevant.)
> 
> please CC me directly with any replies, i am not currently subscribed to
> -stable.

5.1 is -current, not -stable, so you should be mailing the -current
list.  I've reset the cc: appropriately.

If you're not using up to date -current, please upgrade to -current past
October 24th, which included some DRM IRQ fixes.  If the problem
persists, could you check that it doesn't happen with the DRI disabled
in your XF86Config?

-- 
Eric Anholt                                eta at lclark.edu          
http://people.freebsd.org/~anholt/         anholt at FreeBSD.org