On Mon, Nov 20, 2000 at 02:43:38PM -0700, John Regehr wrote:
> > > My suggestion is that you recompile X with this macro set to false - so that X
>doesn't
> > > try to disable irqs and see if that fixes your problem. I suspect that this is
>not
> > > your problem.
> >
> > You are correct that it is probably not the dissabling of interruprts
> > that is the problem, bacuse that is only used in a few places (the ATI
> > driver and in SupperProbe) and only to do the clockprobing.
>
> Video drivers can hose RTLinux/RTAI by writing to a command FIFO on the
> video board without first checking if it's full. In the past some
> Windows drivers have done this as an "optimization" (it speeds up the
This is possible, however, I suspect that Edwin's problem is not with X.
Before speculating too much, he should see if a big I/O load without X
gets the same behavior.
> common case by eliminating a PCI read). A write to a full FIFO will
> stall the PCI bus (and the rest of the machine) - this condition can
> last for many milliseconds.
Many milliseconds?
Do you have an example hardware to test?
-- [rtl] ---
To unsubscribe:
echo "unsubscribe rtl" | mail [EMAIL PROTECTED] OR
echo "unsubscribe rtl <Your_email>" | mail [EMAIL PROTECTED]
---
For more information on Real-Time Linux see:
http://www.rtlinux.org/rtlinux/
