[Bug 107240] New: [FreeBSD][Braswell] - GPU HANG error at boot using drm-next-kmod under FreeBSD 11.2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107240

            Bug ID: 107240
           Summary: [FreeBSD][Braswell] - GPU HANG error at boot using
                    drm-next-kmod under FreeBSD 11.2
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: FreeBSD
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: allcoms at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 140644
  --> https://bugs.freedesktop.org/attachment.cgi?id=140644&action=edit
screenshot of FreeBSD 11.2 braswell GPU HANG error

I upgraded my FreeBSD server from 11.1 to 11.2 a couple of days ago. The main
reason I did so was in the hope that I would finally get accelerated graphics
working but I've had no such luck. The mobo is a Gigabyte N3150-N D3V which I
think uses a Braswell GPU, which is supposed to be supported by drm-next-kmod
in ports.

I installed xorg-video-intel, the kernel source for FreeBSD 11.2 and I
installed drm-next-kmod from ports then loaded the kernel module in rc.conf
with: 

kld_list="/boot/modules/i915kms.ko" 

When I try booting with the kernel module I get the error in the attached
screenshot. I have provided some more logs here:

https://forums.freebsd.org/threads/braswell-gpu-support.66678/

Thanks

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