[Bug 96473] i915.ko corrupt text lines at top, [drm] GPU HANG: ecode 2:0:0x037fffc1, reason: Ring hung

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96473

--- Comment #8 from Taketo Kabe <fdporg at vega.pgw.jp> ---
By writing directly on /dev/fb0,
  dd if=/dev/urandom bs=1024 of=/dev/fb0 count=384
doesn't have any screen change, but
  dd if=/dev/urandom bs=1024 of=/dev/fb0 count=385
starts to render uramdom pixels following the freezed,garbled pixels.
Does this ring any bell?

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