[Bug 108499] New: i915 video corruption with drm-next-kmod-4.11.g20180822

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108499

            Bug ID: 108499
           Summary: i915 video corruption with
                    drm-next-kmod-4.11.g20180822
           Product: xorg
           Version: 7.5 (2009.10)
          Hardware: Other
                OS: FreeBSD
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/intel
          Assignee: chris at chris-wilson.co.uk
          Reporter: mike.d.ft402 at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org

When using 2D and 3D accelerated graphics I get corruption like
missing/blinking characters in fonts, broken transparency and torn rectangles
on screen, black with dark blue dots that sometimes move/blink, which sometimes
also show up in textures.

Also I used to get GPU hangs (for 60 seconds, until the driver finds out and
resets the chip) every half an hour or so of especially intensive use, such as
switching workspaces a lot or running games/flightgear. But this seems to have
resolved (though not completely, I have seen it hang like that again since, but
it was only once) when I switched to modeset driver and drm-next-kmod.

Also I keep getting X11 crashes every 10 hours or so (of uptime -- of course
the laptop gets suspended many times with X running), with the following
backtrace:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231068

I have reported these to FreeBSD, but there does not seem to be any activity at
all:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=227870
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=231068

Please help, I've been having these issues unresolved for so long now that I'm
seriously considering buying a new computer and switching OS just to stop this.


My current setup:

FreeBSD 11.2-RELEASE-p2, generic kernel with drm-next-kmod-4.11.g20180822
xorg-server-1.18.4_9,1 using modeset driver

Lenovo B570e
Intel(R) Core(TM) i7-2820QM CPU @ 2.30GHz

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