Michel Dänzer wrote: > On Tue, 2007-01-30 at 12:42 +0100, Thomas Hellström wrote: > >>> >>> >> There seems to be some hardware problems with some i915s: >> Some chips duplicate the display IRQs on the sound IRQ lines which >> causes the kernel to detect unhandled IRQs on the sound line and disable >> it after a while. This can be worked around using an option to the sound >> driver. >> > > It sounds like this shouldn't affect the IRQ handling of the DRM itself > though, does it? > No, it shoudn't. > > >> The other problem is that when user IRQs are turned off, more often than >> not the display chip starts to issue false IRQs which are not reflected >> in the status registers. Eventually the kernel turns the IRQ line off. >> I ran into this when I tried to turn off IRQs when the fence driver >> didn't need them. It might be the problem in this case. >> > > You mean i915_driver_irq_uninstall() could trigger this problem? > > Yes, possibly. Intel doesn't seem to be aware of the problem. > Otherwise, I'm wondering if it could be related to Zou Nan hai's recent > vblank interrupt fix. > > OK.
/Thomas ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV -- _______________________________________________ Dri-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/dri-devel
