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Re: HEADS UP: graphics driver fixes

On Sat, Feb 28, 2015 at 06:24:58AM +0000, Taylor R Campbell wrote:
> tl;dr: If DRM/KMS has been flaky for you, please try again in HEAD!
> I recently found a bit of spare time to look for bugs I'd left in
> DRM/KMS which have left a lot of systems kinda-sorta working but not
> acceptably.
> In so doing, I found several classes of bugs related to timeouts --
> about two dozen different bugs altogether, in different timed waits,
> including detecting displays, waiting for rendering commands to
> complete, and waiting for vertical blanks.  This affects all DRM
> drivers (at the moment, just Intel and Radeon).
> I've reviewed all these timed waits, and I don't see any more of these
> bugs.  Obviously this code could use more eyeballs!  (Grep for
> `DRM_.*WAIT.*_UNTIL' if you'd like to lend yours.)  But if you've been
> having trouble with blank screens or flaky rendering or frequent hangs
> -- I can't promise anything, but please try again with a kernel from
> HEAD and let me know how it goes.

I tried a HEAD kernel on a
i915drmkms0 at pci0 dev 2 function 0: Intel Haswell Integrated Graphics Device (rev. 0x06)
(Xorg says this is a HD 4600)
Running stellarium, I still see the X server hanging on vmem
after a few moves/zoom. 

Manuel Bouyer <>
     NetBSD: 26 ans d'experience feront toujours la difference

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