Re: [PATCH] drm/i915: Disable high-precision vblank timestamping for UMS

On Sun, 23 Jan 2011 11:28:22 +0000, Chris Clayton chris2553@googlemail.com wrote:

Hi Chris,

On Sunday 23 January 2011, Chris Wilson wrote:

...

We only have sufficient information for accurate (sub-frame) timestamping when the modesetting is under our control.

With this patch (and the earlier one) applied, X still doesn't start. At the end of xorg's log file I see:

Fatal server error: Failure to wait for IRQ: No such device

Now we are getting closer! The X server has been caught red-handed trying to use an interrupt when the driver never enabled them. Ho hum.

The interrupts for UMS are only enabled between EnterVT/LeaveVT, but that code looks defunct. What version of xf86-video-intel are you using? -Chris