[Bug 94358] Display sleep mode causes session crash

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94358

--- Comment #3 from Andreas Kloeckner <inform at tiker.net> ---
I'm not really using Wayland though. I know that the X server said something
about Wayland events, but I'm not sure where that came from.

Occasionally (but not every time) I get these messages as part of the crash,
which does implicate the kernel:

Mar  2 08:52:01 bolt kernel: [  558.921225] [drm:intel_dp_start_link_train
[i915]] *ERROR* failed to enable link training
Mar  2 08:52:01 bolt kernel: [  558.923915] [drm:intel_dp_complete_link_train
[i915]] *ERROR* failed to start channel equalization

This only seems to happen with my 4K monitor.

(and then all hell breaks loose:)
Mar  2 08:52:01 bolt /usr/lib/gdm3/gdm-x-session[1909]: (II) systemd-logind:
got pause for 13:87
Mar  2 08:52:01 bolt /usr/lib/gdm3/gdm-x-session[1909]: (II) systemd-logind:
got pause for 13:75
Mar  2 08:52:01 bolt /usr/lib/gdm3/gdm-x-session[1909]: (II) systemd-logind:
got pause for 13:88
Mar  2 08:52:01 bolt /usr/lib/gdm3/gdm-x-session[1909]: (II) systemd-logind:
got pause for 13:68
Mar  2 08:52:01 bolt /usr/lib/gdm3/gdm-x-session[1909]: (II) systemd-logind:
got pause for 13:67
Mar  2 08:52:01 bolt gdm3: Child process -1136 was already dead.
Mar  2 08:52:01 bolt systemd[1]: Stopping User Manager for UID 119...
Mar  2 08:52:01 bolt systemd[1127]: Reached target Shutdown.

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