Bug#944350: RE: [External] Bug#944350: systemd: screen remains off after waking up from suspend
- To: Jiri Kanicky <j@ganomi.com>, "944350@bugs.debian.org" <944350@bugs.debian.org>
- Subject: Bug#944350: RE: [External] Bug#944350: systemd: screen remains off after waking up from suspend
- From: Mark Pearson <mpearson@lenovo.com>
- Date: Fri, 6 Dec 2019 18:47:05 +0000
- Message-id: <[🔎] eba8724512114254b0e886bd707d89e8@lenovo.com>
- Reply-to: Mark Pearson <mpearson@lenovo.com>, 944350@bugs.debian.org
- In-reply-to: <c9709bf5-c7f7-308c-b16b-fd6852408581@ganomi.com>
- References: <bdd2b2b9-62e5-46b2-b238-4913b77616fc@email.android.com> <f988c195-e996-b688-48f1-215cdc8b5ce5@debian.org> <f988c195-e996-b688-48f1-215cdc8b5ce5@debian.org> <b3b5eaf4-fa2a-50ce-e166-1b1dc676e9e2@ganomi.com> <b3b5eaf4-fa2a-50ce-e166-1b1dc676e9e2@ganomi.com> <157321437003.3700.6191502333225072649.reportbug@superman.jiritech.net> <5c84344f-1f84-f17c-5eca-b594783491bf@ganomi.com> <3ee36e480eca49f6a9eb9cf60d10ef25@lenovo.com> <3ee36e480eca49f6a9eb9cf60d10ef25@lenovo.com> <157321437003.3700.6191502333225072649.reportbug@superman.jiritech.net> <c9709bf5-c7f7-308c-b16b-fd6852408581@ganomi.com> <157321437003.3700.6191502333225072649.reportbug@superman.jiritech.net>
Hi Jiri,
I'm pretty sure it's not in 5.3.0-2. Are you sure? I can look again but I recently did put in a merge request to get it pulled into sid: https://salsa.debian.org/kernel-team/linux/merge_requests/188
Not sure if/when it will be accepted (it's only my 2nd attempt at doing this) but hopefully someone looks at it and thinks it's useful)
Mark
> -----Original Message-----
> From: Jiri Kanicky <j@ganomi.com>
> Sent: Saturday, November 30, 2019 6:56 AM
> To: 944350@bugs.debian.org
> Subject: 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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