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[Bug 1143139] Intel[Skylake] Displaying (both in X and tty) is stuttering with kernel 5.2.x
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Mon, 29 Jul 2019 16:34:22 +0000
  • Message-id: <bug-1143139-21960-4vXzIV2pgI@http.bugzilla.opensuse.org/>
http://bugzilla.opensuse.org/show_bug.cgi?id=1143139
http://bugzilla.opensuse.org/show_bug.cgi?id=1143139#c21

Mikael Widersten <mikael.widersten@xxxxxxxx> changed:

What |Removed |Added
----------------------------------------------------------------------------
CC| |mikael.widersten@xxxxxxxx

--- Comment #21 from Mikael Widersten <mikael.widersten@xxxxxxxx> ---
(In reply to Mykola Krachkovsky from comment #18)
Also, I've booted with external display and noticed that only notebook
internal display is affected, external display works absolutely fine. For
example, internal display still shows SDDM, while on external KDE Plasma
successfully loaded and works fine.

xrandr info (1st is internal, 2nd external):
```
xrandr -q | grep -A1 ' conn'
eDP-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis)
344mm x 194mm
1920x1080 60.02 + 60.01* 59.97 59.96 59.93 47.99
--
HDMI-2 connected primary 1920x1080+1920+0 (normal left inverted right x axis
y axis) 477mm x 268mm
1920x1080 60.00*+
```

Also when external display is plugged TTY behaves much better (presence of X
doesn't matter).

And it might be false impression, but it seems, when mouse moves from
external to internal display it's updated.

Sorry for hijacking this thread, but I experience the same (very similar)
problem after updating from 5.1.16 to 5.2.1. I have tried up to 5.2.4 and the
problem persists. Hw= Lenovo X1 Skylake GT2 520 graphics rev 07, i915 driver.
It is impossible to boot without an attached external screen (via DP). After
booting interacting through the external screen, the system behaves normal (but
with an unusable internal screen - it is frozen). reverting back to 5.1.6 fixed
the issue.

Tumbleweed 20190726 plasma 5.16.3, kernel-default 5.1.16-1.

best,

/mikael

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