Hi,
On 13-09-16 12:53, Hans de Goede wrote:
Hi Adam, Keith,
Here is a pull-req for 4 modesetting driver prime fixes, which
I've had ready for quite a while now. I've asked various people
at various time to review these, but I've failed to get anyone
to look at them.
So now I'm asking you to merge these unreviewed and trust me
that these are good (I've tested them extensively). Getting
these into 1.19 is important for a number of reasons:
1) Debian and Ubuntu are moving to using the modesetting
driver instead of the intel driver for all recent Intel
iGPUs, without these patches users of hybrid gfx laptops
will see a regression (DRI2 prime offload will not work),
also not that Fedora has already moved to the modesetting
driver for skylake and newer since F24, so the same goes
for Fedora users with skylake.
2) The nouveau ddx does not support the latest 2 generations
of NVidia GPUs so people with these get the modesetting driver,
without these fixes opengl apps on slave outputs on such
NVidia GPUs will run at 1 fps.
3) Ben Skeggs is working on displayport mst for the nouveau
kms driver this will hopefully be ready soon, since the
nouveau ddx does not support mst the plan is to switch to
the modesetting driver for all mst capable NVidia GPUs
with a nouveau ddx update in the near future. Triggering
2) on a wider range of devices.
Erm, correction, the issues are actually the other way
around using modesetting driver on a slave gpu leads
to (DRI2 prime offloading not working), using it on
a master GPU leads to opengl apps on slave outputs
running at 1 fps.
This does not change that both are serious problems
which impact some users now and likely a lot more users
in the future.
Regards,
Hans
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