On Wed, Nov 16, 2011 at 06:03:15PM +0100, Michel D?nzer wrote: > I thought the main reason for the delay wasn't broken hardware but to > avoid constantly ping-ponging the vblank IRQ between on and off with > apps which regularly neeed the vblank counter value, as that could make > the counter unreliable. Maybe I'm misremembering though.
If turning it on and off results in the counter value being wrong then surely that's a hardware problem? I've tested that turning it on and off between every IRQ still gives valid counter values on sandybridge. -- Matthew Garrett | mjg59 at srcf.ucam.org
