svn commit: r194540 - head/sys/dev/drm

[Daniel Eischen]

On Sat, 20 Jun 2009, Robert Noland wrote:

> On Sat, 2009-06-20 at 12:56 -0400, Daniel Eischen wrote:
>> On Sat, 20 Jun 2009, Robert Noland wrote:
>>
>>> Author: rnoland
>>> Date: Sat Jun 20 16:45:14 2009
>>> New Revision: 194540
>>> URL: http://svn.freebsd.org/changeset/base/194540
>>>
>>> Log:
>>>  The G45 docs indicate that all G4X chips use the new framecount register.
>>>
>>>  Intel agrees with my reading of the docs, make it so for all G4X chips.
>>>
>>>  The new register also has a 32 bit width as opposed to 24 bits.  Fix
>>>  things up so that the counters roll over properly.
>>
>> Could this possibly fix the problem I'm seeing with the screen being
>> garbage after a logout from KDE 3.x (using kdm)?  Everything works
>> fine after logging in, but when you log out, the screen is left with
>> garbage/lots of vertical striping.  This only happened after upgrading
>> my system (and all ports) to Xorg 7.4, worked just fine before that.
>>
>> agp0: <Intel 82945GM (945GM GMCH) SVGA controller> on vgapci0
>> agp0: detected 7932k stolen memory
>> agp0: aperture size is 256M
>> vgapci1: <VGA-compatible display> mem 0xdff80000-0xdfffffff at device  2.1 on pci0
>
> No, this only change only effects g45 chips, which would have been
> incorrectly handling the hardware vblank counter.  It will have no
> impact on 945.  I'm trying to pull changes that are definite wins from
> my Intel branch right now.  I don't think that I have seen the symptoms
> that you describe on my 945, except when it is resuming from suspend.  I
> do only run gnome on it though, it is far too slow to do kde as well...
> I'm trying to fix up the interrupt handling in a less invasive way than
> I did previously, but even that should only effect 965+ with msi
> enabled.

I have not tried GNOME, but mine does work fine with plain old xdm
and twm.  It has been happily running for year(s) with previous
Xorg/KDE and drm.

-- 
DE