X11 + i915kms

[Hans Petter Selasky]

On 2019-12-27 12:12, Jan Beich wrote:
> Hans Petter Selasky <hps at selasky.org> writes:
> 
>> Hi,
>>
>> Just did a fresh install of X11 and stuff. I noticed the
>> xf86-video-intel is very sluggish unless SNA acceleration mode is
>> selected. Do you know anything about this? Maybe make it the default?
>> Or should I have used another driver?
> 
> FreeBSD disabled SNA by default for compatibility with pre-SandyBridge
> on drm-legacy-kmod (previously, in-base drm2), see bug 214593.
> SNA is also unstable due to I915_USERPTR_UNSYNCHRONIZED, so you may
> need the patch in bug 236003.

Does this fix the issue?
https://github.com/FreeBSDDesktop/kms-drm/pull/205

> 
> While modesetting DDX (part of xorg-server) is recommended over xf86-video-intel
> the version in ports/ is very old (may lack some PCI IDs) and may have bugs
> with LIBGL_DRI3_ENABLE=1 (upstream default).
> 

--HPS