Bug#944350: RE: [External] Bug#944350: systemd: screen remains off after waking up from suspend
Hi.
It seems that Debian 5.3.0-2-amd64 includes the code in the patch
already and I still have the issue.
Jiri
On Mon, 25 Nov 2019 16:45:55 +0000 Mark Pearson <mpearson@lenovo.com> wrote:
> Hi,
>
> I don't know if this is helpful but I recently debugged a similar
issue on the Lenovo P1Gen2. There the problem is only with the
integrated graphics and an OLED screen - we tracked it down to an issue
in the i915 driver where it wasn't giving enough time for eDP link
training. It turned out this was due to the driver using the wrong
clocks after a suspend and resume .
>
> Intel recently up-streamed a fix (commit 2f216a85 - it went into
5.4-rc8)
>
> I'm working on doing a patch that I'm hoping to get into Debian to
backport - just not done yet :) The patch is pretty small (I've attached
it) so you might want to give it a go and see if it helps.
>
> Note - we did also test X1 extreme with OLED panel and didn't see a
problem there....but it's a really subtle timing issue so some units
might be more susceptible than others. Maybe worth a go?
>
> If it does make a difference let me know.
> Mark
>
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