On Thu, 2008-09-04 at 16:43 +0300, Maksym Veremeyenko wrote:
> Michel Dänzer написав(ла):
> > On Thu, 2008-09-04 at 16:13 +0300, Maksym Veremeyenko wrote:
> >> [drm:i915_get_vblank_counter] *ERROR* trying to get vblank count for
> >> disabled pipe 0
> >
> > Looks like the i915 driver still honours the DRM_I830_SET_VBLANK_PIPE
> > ioctl even with vblank-rework, so the vblank interrupts are disabled
> > while there are no GLX clients.
>
> IMHO, problem is in a *drm_irq.c*:
>
> [...]
> static void drm_update_vblank_count(struct drm_device *dev, int crtc)
> {
> [...]
> cur_vblank = dev->driver->get_vblank_counter(dev, crtc);
> [...]
>
> where it submits crtc==0 - index of first available pipe instead of
> index of first active pipe. perhaps if enabled only one pipe it assume
> that it has index 0 (FIX ME)
The crtc value is derived from what you pass to drmWaitVBlank(): if you
want to wait on CRTC 1, you need to set vbl.request.type |=
DRM_VBLANK_SECONDARY.
--
Earthling Michel Dänzer | http://tungstengraphics.com
Libre software enthusiast | Debian, X and DRI developer
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