[CFT] drm updates

[Paul B. Mahol]

On 8/29/08, Robert Noland <rnoland at freebsd.org> wrote:
> On Fri, 2008-08-29 at 12:54 +0200, Paul B. Mahol wrote:
>> On 8/28/08, Robert Noland <rnoland at freebsd.org> wrote:
>> > On Thu, 2008-08-28 at 20:45 +0200, Paul B. Mahol wrote:
>> >> On 8/28/08, Robert Noland <rnoland at freebsd.org> wrote:
>> >> > On Thu, 2008-08-28 at 19:07 +0200, Paul B. Mahol wrote:
>> >> >> On 8/27/08, Robert Noland <rnoland at freebsd.org> wrote:
>> >> >> > On Wed, 2008-08-27 at 12:07 +0200, Paul B. Mahol wrote:
>> >> >> >> On 8/26/08, Robert Noland <rnoland at freebsd.org> wrote:
>> >> >> >> > On Tue, 2008-08-26 at 17:51 +0200, Paul B. Mahol wrote:
>> >> >> >> >> Here is more kernel debug info (after updating libdrm and
>> >> >> >> >> testing
>> >> >> >> >> with
>> >> >> >> >> glxgears)
>> >> >> >> >
>> >> >> >> > I don't think that the two issues are related, but try this
>> >> >> >> > patch...
>> >> >> >> > It
>> >> >> >> > should at least, resolve the issue below.
>> >> >> >> >
>> >> >> >> > robert.
>> >> >> >>
>> >> >> >> Issue bellow is fixed, previous problem still exist.
>> >> >> >>
>> >> >> >> textdump of panic when unloading drm attached.
>> >> >> >
>> >> >> > Ok, The locking semantics are a nightmare... Give this a try, it
>> >> >> > should
>> >> >> > correct both the previous issue as well as this one.
>> >> >> >
>> >> >> > robert.
>> >> >> >
>> >> >>
>> >> >> Panic fixed, now only Xorg crashing when using glxgears (,...)
>> >> >> remains
>> >> >> ;)
>> >> >
>> >> > Ok, what hardware are you using again?  Can you manually load drm
>> >> > modules and set hw.dri.0.debug=1 and send me the debug output?
>> >> >
>> >> > robert.
>> >>
>> >> Hardware: "Mobile 945GM/GU Express Integrated Graphics Controller"
>> >> Debug ouptut attached.
>> >
>> > Alright, try this...  I was pointed at this from another thread, but
>> > your trace confirms why it doesn't work, at least with your driver.
>> >
>> > robert.
>> >
>>
>> Nothing improved with that patch, still crash with glxgears, and lock
>> with stellarium.
>
> ok, I don't understand why I'm not seeing any of this on my 965gm...  If
> you want to send me another debug trace, I'll see if I can tell what is
> going on now... Also, please send me a copy of your xorg.conf.

Well, actually it is:

agp0: <Intel 82945GM (945GM GMCH) SVGA controller> on vgapci0
agp0: detected 7932k stolen memory
agp0: aperture size is 256M
drm0: <Intel i945GM> on vgapci0

>
>> How to make sure that this is really drm problem and not i915, Xorg,
>> mesa-ports that need recompiling?
>
> If you are using current ports tree, then nothing should need rebuilding
> that I can think of.  I have been using git libdrm and xf86-video-intel
> driver, but what is in ports now should be fine I think.  The updated
> libdrm should only be required to get the new vblank code to allow it to
> disable vblank interrupts.
>
> There is a bug which prevents vblanks irqs from being disabled after a
> vt switch, but it shouldn't have a real impact on functionality.
>
> robert.
>
>