drm on i965GM is very sluggish

[Robert Noland]

On Sat, 2009-03-21 at 19:47 -0700, Steve Kargl wrote:
> On Sat, Mar 21, 2009 at 09:32:49PM -0500, Robert Noland wrote:
> > On Sat, 2009-03-21 at 19:28 -0700, Steve Kargl wrote:
> > > On Sat, Mar 21, 2009 at 09:24:56PM -0500, Robert Noland wrote:
> > > > On Sat, 2009-03-21 at 19:18 -0700, Steve Kargl wrote:
> > > > > Kernel and world are from today sources.  If I start firefox3,
> > > > > redraws become painfully slow.  Top(1) shows
> > > > 
> > > > Todays, -CURRENT or -STABLE?
> > > > 
> > > 
> > > -current.  This is a Dell Latitude D530 laptop.  Do you need
> > > any other info.
> > 
> > I assume that it is fine before a vt switch, then bad after.  Does that
> > match with what you are seeing?
> > 
> 
> I boot.  Login in at a vt, then almost immediately do
> 
> ssh-agent startx -- -depth 16 >& ~/tmp/.x.out
> 
> I do not switch from X11 back to a console.  
> 
> Note xterm works fine.  The sluggish only appears when I
> fire up firefox3, but I haven't tried other big apps like
> openoffice.
> 
> Also, note I just installed a kernel without drm.  Starting
> firefox3 with this new kernel does not cause the sluggish
> behavior.
> 
> I also just noticed that dmesg had
> 
> drm0: <Intel i965GM> on vgapci0
> info: [drm] MSI enabled 1 message(s)
> 
> Is it possible to disable MSI and still run drm?

Yes, There is a tuneable hw.drm.msi

I did do all of the msi development on a 965gm.  Unfortunately, I no
longer have access to that hardware.

Do you have witness enabled?

robert.

-- 
Robert Noland <rnoland at FreeBSD.org>
FreeBSD
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