Re: Hibernate in stretch
On Saturday, 29 July 2017 18:40:58 CEST solitone wrote:
> 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 <gregkh@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.
>
> I therefore wonder whether this means this bug is still there in the
> production kernel, even in versions greater than 4.9.x.
Yes, that patch ended up in v4.9.9 [1]. Then some problems were reported, and
it was reverted in v4.9.23 with commit
0ee72d8f9b8e17b8e4ccfebc7a25cbc2d395cd6a [2].
I have just installed kernel version 4.11.6, from stretch-backports:
~$ uname -a
Linux alan 4.11.0-0.bpo.1-amd64 #1 SMP Debian 4.11.6-1~bpo9+1 (2017-07-09)
x86_64 GNU/Linux
With that kernel hibernate seems to work, but I need further testing. I would
suggest you to test that kernel version as well, and post your findings here.
[1] https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.9
[2] https://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.23
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