Public bug reported:

Binary package hint: gnome-settings-daemon

Whenever I plugin an external flatscreen TV CPU use goes up, the mouse
jumps around and performance becomes jerky. The external monitor
flickers for a while and eventually gives up. Killing gnome-settings-
daemon immediately causes the external monitor to display properly.
Restarting gnome-settings-daemon or starting gnome-display-properties
separately both cause the external monitor to stop displaying. When I
tail the Xorg.0.log during these times there are spikes in messages
about polling the connected monitors for their display sizes.

Below I've included the text I wrote in comments to a similar bug
(https://bugs.launchpad.net/ubuntu/+source/libxrandr/+bug/307306) that
was eventually traced to gnome-settings-daemon and gnome-power-manager.

On a Macbook 1,1 
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 
943/940GML Express Integrated Graphics Controller (rev 03)
Philips 42" LCD television

===
This g-s-d problem caused me to misinterpret a problem with dual-monitor 
displays. On a Macbook 1,1 whenever I plugged in a DVI-to-HDMI connector to a 
flatscreen television (using a TMDS-1 output on an intel card), on hotplug the 
machine would start to slow down. On coldplug and an unaltered xorg.conf it 
would attempt to load both displays but the flatscreen would start flickering 
on and off and eventually stop attempting to display anything. xrandr would 
show both active LVDS and TMDS-1 connections. Any attempt to use 
gnome-display-settings would only show a blank application window that could 
not be closed except by force quit. I had assumed that this was an issue 
directly with xserver-xorg-intel until I saw this bug: 
https://bugs.launchpad.net/ubuntu/+source/libxrandr/+bug/307306.

As of today, killing gnome-settings-daemon immediately caused the
flatscreen video to appear and slowness issues are gone. Trying to use
gnome-display-settings immediately kills the display and shows the blank
window again. Perhaps this points to xrandr and intel, or xrandr and
dual-monitor auto-detection?

Just to be clear, these are the same symptoms that Chousuke reported
here:
https://bugs.launchpad.net/ubuntu/+source/libxrandr/+bug/307306/comments/37.
Running gnome-display-properties will cause the screen to go black until
it's closed, regardless of whether g-s-d is running. A clean X session
with g-s-d disabled at startup and briefly running gnome-display-
properties is the same size as the current log.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 9.04
Package: gnome-settings-daemon 2.25.92-0ubuntu4
ProcEnviron:
 PATH=(custom, user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-settings-daemon
Uname: Linux 2.6.28-8-generic i686

** Affects: gnome-settings-daemon (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

-- 
gnome-settings-daemon and gnome-display-properties slow down xserver when 
external monitor added
https://bugs.launchpad.net/bugs/339228
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

-- 
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to