On Wednesday, 26 July 2017 21:48:30 CEST solitone wrote:
> I haven't yet figured out which kernel version contains such patch, though.
> BTW, I have also submitted a bug to debian, pointing out that solution, but
> it doesn't seem to have been considered yet:
> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=869424
From what I gather, the patch was included in kernel version 4.8-rc2:
$ git describe bafb2f7d4755bf1571bd5e9a03b97f3fc4fe69ae
v4.8-rc2-641-gbafb2f7d4755
The kernel shipped with Stretch is version 4.9.30:
$ uname -v
#1 SMP Debian 4.9.30-2+deb9u2 (2017-06-26)
but we still experience the bug. This is because, if I understand it right,
the commit containing this patch was reverted in the production kernel:
commit 0ee72d8f9b8e17b8e4ccfebc7a25cbc2d395cd6a
Author: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Date: Wed Apr 12 15:49:39 2017 +0200
Revert "drm/i915/execlists: Reset RING registers upon resume"
This reverts commit f2a0409a08502d64fbe3990354dff5902b08d2fb which is
commit bafb2f7d4755bf1571bd5e9a03b97f3fc4fe69ae upstream.
It was reported to have problems. [1]
I therefore wonder whether this means this bug is still there in the
production kernel, even in versions greater than 4.9.x.
[1] https://lists.freedesktop.org/archives/intel-gfx/2017-April/125833.html
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