Ubuntu
xserver-xorg-input-synaptics package

syndaemon polls 5 times a second

Bug #633125 reported by Andrew Bennetts on 2010-09-08

This bug affects 5 people

Affects		Status	Importance	Assigned to	Milestone
	gnome-settings-daemon (Ubuntu)	Fix Released	Undecided	Rodrigo Moya
	xserver-xorg-input-synaptics (Ubuntu)	Fix Released	Undecided	Unassigned

Bug Description

Binary package hint: xserver-xorg-input-synaptics

The "Disable touchpad while typing" option in System->Preferences->Mouse launches syndaemon -i 0.5 -k. Unfortunately syndaemon seems to poll every 200ms even when the system is otherwise idle, waking up the CPU and presumably wasting power.

syndaemon has code to use XRecord to avoid polling, but it appears to be compiled without HAVE_XRECORD, even though Xorg appears to provide that extension (judging from xdpyinfo output). It also requires -R to be passed on the command line, although perhaps it would be a reasonable default?

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xserver-xorg-input-synaptics 1.2.2-2ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
Uname: Linux 2.6.35-20-generic i686
Architecture: i386

See original description

Tags:

Related branches

lp:~rodrigo-moya/ubuntu/natty/gnome-settings-daemon/fix-633125

Merged into lp:~ubuntu-desktop/gnome-settings-daemon/ubuntu at revision 139

Ubuntu Desktop: Pending requested 2011-04-07

lp:~ubuntu-desktop/gnome-settings-daemon/ubuntu

lp:ubuntu/natty/gnome-settings-daemon

Revision history for this message

Andrew Bennetts (spiv) wrote on 2010-09-08:

BootDmesg.txt Edit (62.3 KiB, text/plain; charset="utf-8")
CurrentDmesg.txt Edit (13.4 KiB, text/plain; charset="utf-8")
Dependencies.txt Edit (4.2 KiB, text/plain; charset="utf-8")
Lspci.txt Edit (14.9 KiB, text/plain; charset="utf-8")
PciDisplay.txt Edit (739 bytes, text/plain; charset="utf-8")
ProcCpuinfo.txt Edit (3.4 KiB, text/plain; charset="utf-8")
ProcInterrupts.txt Edit (2.0 KiB, text/plain; charset="utf-8")
ProcModules.txt Edit (3.7 KiB, text/plain; charset="utf-8")
RelatedPackageVersions.txt Edit (232 bytes, text/plain; charset="utf-8")
UdevDb.txt Edit (119.3 KiB, text/plain; charset="utf-8")
UdevLog.txt Edit (275.8 KiB, text/plain; charset="utf-8")
XorgLog.txt Edit (29.3 KiB, text/plain; charset="utf-8")
XorgLogOld.txt Edit (44.0 KiB, text/plain; charset="utf-8")
Xrandr.txt Edit (4.7 KiB, text/plain; charset="utf-8")
peripherals.txt Edit (1.5 KiB, text/plain; charset="utf-8")
setxkbmap.txt Edit (247 bytes, text/plain; charset="utf-8")
xdpyinfo.txt Edit (9.7 KiB, text/plain; charset="utf-8")
xkbcomp.txt Edit (54.2 KiB, text/plain; charset="utf-8")

Revision history for this message

Alessandro Guido (iro) wrote on 2010-10-10:

When my system is idle, syndaemon makes up the 50% of the number of processor wakeups per second.
This increases battery consumption.

Revision history for this message

Alessandro Guido (iro) wrote on 2010-10-10:

Maybe that's more like the 20-25% (seen with powertop, before I used gnome-power-manager). However they're still 5 unnecessary processor wakeups per second.

Gursimran singh (simar) on 2010-11-13

Changed in xserver-xorg-input-synaptics (Ubuntu):
importance:	Undecided → Low

Gursimran singh (simar) on 2010-11-20

Changed in xserver-xorg-input-synaptics (Ubuntu):
importance:	Low → Undecided

Sergey Nizovtsev (snizovtsev) on 2011-01-28

Changed in xserver-xorg-input-synaptics (Ubuntu):
status:	New → Confirmed

Revision history for this message

Sergey Nizovtsev (snizovtsev) wrote on 2011-04-05:

This bug has been fixed in natty 'syndaemon' package, but it needed to run syndaemon with "-R" option in the gnome-settings-daemon.

Revision history for this message

Sergey Nizovtsev (snizovtsev) wrote on 2011-04-05:

Fixed in Debian, released in Natty

Changed in xserver-xorg-input-synaptics (Ubuntu):
status:	Confirmed → Fix Released
description:	updated
tags:	added: natty removed: apport-bug i386

Revision history for this message

Sergey Nizovtsev (snizovtsev) wrote on 2011-04-05:

Test cases:
1) To ensure syndaemon compiled with XRecord extension run "strace syndaemon -i 0.5 -k -R". The program should be in the idle state until keypress.
2) To ensure gnome-settings-daemon runs syndaemon with "-R" option run "ps aux | grep syndaemon".

Revision history for this message

Sergey Nizovtsev (snizovtsev) wrote on 2011-04-06:

use_xrecord.patch Edit (690 bytes, text/plain)

Rodrigo Moya (rodrigo-moya) on 2011-04-07

Changed in gnome-settings-daemon (Ubuntu):
assignee:	nobody → Rodrigo Moya (rodrigo-moya)
status:	New → In Progress

Revision history for this message

Rodrigo Moya (rodrigo-moya) wrote on 2011-04-07:

Sergey, I was going to push this to gnome-settings-daemon upstream, but since that should work on all distributions/versions of syncdaemon, can someone please confirm that the -R is harmless if syndaemon is not compiled with the XRecord extension?

For natty, the attached branch fixes it

Revision history for this message

Launchpad Janitor (janitor) wrote on 2011-04-07:

#10

This bug was fixed in the package gnome-settings-daemon - 2.32.1-0ubuntu13

---------------
gnome-settings-daemon (2.32.1-0ubuntu13) natty; urgency=low

* debian/patches/05_use_xrecord.patch:
- Add patch to tell syndaemon to use the XRecord extension (LP: #633125)
-- Rodrigo Moya <email address hidden> Thu, 07 Apr 2011 12:24:07 +0200

Changed in gnome-settings-daemon (Ubuntu):
status:	In Progress → Fix Released

Revision history for this message

Sergey Nizovtsev (snizovtsev) wrote on 2011-04-07:

#11

Rodrigo, Syndaemon is just silently ignores the "-R" option if compiled without XRecord.

Report a bug

This report contains Public information

Everyone can see this information.

You are

Subscribing...

Edit bug mail

Other bug subscribers

Patches

use_xrecord.patch Edit

Add patch

Bug attachments

Add attachment

Remote bug watches

Bug watches keep track of this bug in other bug trackers.

Ubuntuxserver-xorg-input-synaptics package

syndaemon polls 5 times a second

Bug Description

Related branches

Other bug subscribers

Patches

Bug attachments

Remote bug watches

Ubuntu
xserver-xorg-input-synaptics package