Re: NetBSD 9 on ThinkPad X220

[Leonardo Taccari <leot%NetBSD.org@localhost>]

nia writes:
> On Mon, May 25, 2020 at 09:35:00PM +0300, Jukka Ruohonen wrote:
> > * X (modular) segfaults from the beginning (GENERIC_ALSR) for intel(4), but
> >   works fine when "UXA" is set for "AccelMethod" in xorg.conf(5).
>
> Yeah, we really shouldn't be using xf86-video-intel.
> It's been deprecated in favour of the modesetting driver for years.
> [...]

To expand this a bit, with two machines, one with Intel HD 4400 and another
with an Intel HD 4600 in my experience with -current of the last years:

 - `SNA' acceleration method works well only if -current is built with
   `INTEL_DRIVER_DATE= 2014', otherwise there are graphical artifacts
 - `UXA' acceleration works well but at least when using webkit-gtk I
   see that filling forms is slower than `SNA'

After reading nia suggestion regarding modesetting(4) I have retried it
and seems the best one.  The only caveat: a compositing manager
(e.g. xcompmgr or picom) is needed to avoid graphic artifacts in
www/firefox (thanks Nia for the suggestion off-list!).