[Bug 101225] New: Mouse pointer flickers when --scale is applied via xrandr
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Mon May 29 08:11:18 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=101225
Bug ID: 101225
Summary: Mouse pointer flickers when --scale is applied via
xrandr
Product: DRI
Version: unspecified
Hardware: x86-64 (AMD64)
OS: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: DRM/Intel
Assignee: intel-gfx-bugs at lists.freedesktop.org
Reporter: thilo at ginkel.com
QA Contact: intel-gfx-bugs at lists.freedesktop.org
CC: intel-gfx-bugs at lists.freedesktop.org
Created attachment 131562
--> https://bugs.freedesktop.org/attachment.cgi?id=131562&action=edit
dmesg
Hi there,
as discussed with mupuf on #intel-gfx yesterday I am getting an ugly mouse
pointer flickering after installing Linux (KDE/Plasma 5.9) on my new ThinkPad
T470p (Kaby Lake, HD Graphics 630, Nvidia graphics disabled via ACPI,
modesetting). I have three monitors attached (one built-in HiDPI screen, two
external ones). I have been able to track down the screen flicker to using
--scale 0.75x0.75 on eDP-1 (the internal screen) via xrandr (I need to apply
some screen-specific scaling due to the two external screens being normal DPI
and the internal one being HiDPI).
I am using Arch Linux and hit the issue on both the regular Kernel 4.11.2 and
the LTS Kernel 4.9.30.
$ uname -a
Linux vega 4.11.2-1-ARCH #1 SMP PREEMPT Mon May 22 06:53:49 CEST 2017 x86_64
GNU/Linux
Linux distribution: Arch Linux (x86_64)
Machine or mother board model: Lenovo ThinkPad T470p (i7-7820HQ)
Display connector: 1x eDP (2560x1440 internal 14" screen) 2x DP (2560x1440
external 25" screens connected via Lenovo Ultra Dock)
Video recording of flicker: https://goo.gl/photos/E1aspC36Zs967sUV6
dmesg output and Xorg log attached.
xrandr command line:
-- 8< --
/usr/bin/xrandr -d :0.0 --output DP-3-2 --mode 2560x1440 --pos 0x0 --rotate
normal --primary --output DP-3-1 --mode 2560x1440 --pos 2560x0 --rotate normal
--output eDP-1 --mode 2560x1440 --pos 5120x774 --rotate normal --scale
0.75x0.75
-- 8< --
Please let me know if you need any further details.
Thanks,
Thilo
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