Re: i915 glamor freezes on NetBSD 10.1 amd64, modular-xorg

[beaker%sdf.org@localhost (beaker)]

Mayuresh <mayuresh%acm.org@localhost> wrote:

> I am trying to get a laptop working with NetBSD 10.1.
>
> Recently built modular X11 works with modesetting driver if AccelMethod is
> set to None, else the system freezes requiring power cycle.
>
> I have also installed the i915 firmware and an error message related to
> that in dmesg is gone after it was added, but it did not matter to the
> above issue.
>
> Nothing unusual was found in the Xorg log when AccelMEthod was kept
> enabled, not a single EE and glamor was reported as loaded and initialized
> properly.
>
> Other things tried:
>
> - intel driver doesn't work with any accelerator option. (system freezes)
> - wsfb works
>
> Is any other driver worth trying? Is modesetting with acceleration known
> to work, or not work, on above kind of setup?

(from comp.unix.bsd.netbsd.misc)
--
..
The partial solution was to create a xorg.conf file under /etc/X11 and
add the following tweaks to the main "Device" section:

  Option Accel        "True"
  Option AccelMethod  "BLT"
  Option DRI          "False"
..
--

This wasn't a true fix but it did prevent a total X11 crash and usually running
xrefresh cleaned display up enough to continue working.

-B