** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Assignee: Wormghost (wormghost) = (unassigned)
** Changed in: xserver-xorg-input-synaptics (Ubuntu Natty)
Assignee: Wormghost (wormghost) = (unassigned)
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** Branch linked: lp:debian/xserver-xorg-input-synaptics
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Title:
syndaemon consumes 100% CPU
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I do not think that it was mentionned earlier: I also get 100% after
switching to console (with -R)
I also get 100% cpu when I start syndaemon from ~/.xprofile or from the
gnome startup applications.
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** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Assignee: Chase Douglas (chasedouglas) = Wormghost (wormghost)
** Changed in: xserver-xorg-input-synaptics (Ubuntu Natty)
Assignee: Chase Douglas (chasedouglas) = Wormghost (wormghost)
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It seems daemons are invading launchpad... syndaemons ?
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Title:
syndaemon consumes 100% CPU
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** Changed in: xorg-driver-synaptics
Status: Confirmed = In Progress
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Title:
syndaemon consumes 100% CPU
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It's not really a fix. Merely a paper wrap.
The bug seems to reside elsewhere, and might possibly affect other apps.
IMO it's important to do more work. I will not personally have time to
devote to this, however (despite the fact that I can reproduce the bug).
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You should try: killall syndaemon in terminal.
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Title:
syndaemon consumes 100% CPU
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I just installed the new package. No spinning syndaemon in sight,
syndaemon is working perfectly.
xserver-xorg-input-synaptics:
Installed: 1.3.99+git20110116.0e27ce3a-0ubuntu12
Candidate: 1.3.99+git20110116.0e27ce3a-0ubuntu12
Version table:
*** 1.3.99+git20110116.0e27ce3a-0ubuntu12 0
I have a notebook Fujitsu-Siemens AMILO Pro V3205 and I observe that
100% of CPU (one full processor core) is consumed by process called
syndaemon. Electric power consumption is pretty big.
OS: Ubuntu 11.04 beta 2 32-bit
The machine has an Intel 945 GM chipset.
I am logged into Ubuntu no
I have similar problem on my vaio z11vrn
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Title:
syndaemon consumes 100% CPU
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This bug was fixed in the package xserver-xorg-input-synaptics -
1.3.99+git20110116.0e27ce3a-0ubuntu12
---
xserver-xorg-input-synaptics (1.3.99+git20110116.0e27ce3a-0ubuntu12) natty;
urgency=low
* syndaemon: Drain spurious events from XRecord connection as a work around
for a
** Branch linked: lp:ubuntu/xserver-xorg-input-synaptics
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Title:
syndaemon consumes 100% CPU
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Should this be marked as fixed, since this solution is only a work
around?
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Title:
syndaemon consumes 100% CPU
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Same issue on my laptop. And it's of the kind which does harm to one's
hardware.
It may overheat the laptop if one doesn't notice or know how to stop the crazy
syndaemon. Also, I don't quite understand what this daemon does in my system.
My touchpad is always recognized as a wheel mouse with
So what I wrote before isn't quite correct. I believe libXtst is working
alright, but an event gets stuck in the queue, as Emmanuel noted. I have
added a bit of code to syndaemon to check for any left over events after
all replies have been handled. Any events found are discarded.
Please test the
This indeed fixed the problem! After resume syndaemon doesn't saturate
the CPU and blocks touchpad when typing as expected.
Thanks!
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Title:
Ivan,
I'm glad this fixes the hung process issue for you. However, it shows
there is also a bug somewhere else in the stack. Please kill the running
syndaemon process and run it manually:
$ killall syndaemon
$ syndaemon -v -i 0.5 -k -R
When you hit the bug, it should print out a message about a
Sorry, I didn't keep a close eye on your discussion with Emmanuel and
thought that ignoring unneeded events was the correct fix. Anyway here's
the output:
$ syndaemon -v -i 0.5 -k -R
X RECORD extension version 1.13
bad event received, major opcode 34
bad event received, major opcode 34
bad event
Ok, this confirms what Emmanuel was seeing. At this point, I don't think
I can easily debug the issue remotely, and I can't seem to trigger it on
my systems. I'll push the workaround patch to Ubuntu, but I'm hoping
someone else will be able to come along and debug it some more.
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If some X.org hacker lives near Seattle I could bring my laptop for a
debugging/coffee drinking session :-)
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Title:
syndaemon consumes 100% CPU
I've uploaded an amd64 test package to
http://people.canonical.com/~cndougla/test/. I would like to have
someone install it and then run syndaemon manually:
$ killall syndaemon
$ syndaemon -i 0.5 -k -R
When the bug is triggered, it should hopefully print out some debug
messages. Please let me
Tried this. The bug is triggered but the output is completely silent…
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Title:
syndaemon consumes 100% CPU
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Tried also with -v. Before going to sleep:
$ syndaemon -i 0.5 -k -R -v
X RECORD extension version 1.13
Disable
Enable
enable touchpad
← sleep and
resume
^C
There were no messages after resume, the daemon didn't react on key
** Changed in: xorg-driver-synaptics
Status: Unknown = Confirmed
** Changed in: xorg-driver-synaptics
Importance: Unknown = Medium
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This bug annoys me greatly.
Tried your package as well. It remains silent. No debug output at all.
I don't know which changes you tried, but I've tried putting some
printf() hooks within xrecord_callback(), e.g.:
cbres = (struct xrecord_callback_results *)closure;
int check =
Is this related?
https://bugzilla.redhat.com/show_bug.cgi?id=670039
** Bug watch added: Red Hat Bugzilla #670039
https://bugzilla.redhat.com/show_bug.cgi?id=670039
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No it's not, unfortunately. The current xcb_io.c matches the one in the
git repository, which has the relevant patch applied.
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Title:
syndaemon
** Bug watch removed: Red Hat Bugzilla #670039
https://bugzilla.redhat.com/show_bug.cgi?id=670039
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Title:
syndaemon consumes 100% CPU
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There still seems to be something quite fishy going on with XRecord and
async events. I don't know much of it underneath, so my understanding
might be quite bad. Here are some random thoughts.
The problem is that there is an event queue which fills up and is never
drained by the application.
Emmanuel,
The XRecord library is in libXtst. In its async handler
(record_async_handler), there's no checking of the X reply type other
than to check whether it's an error or not. If it gets a non error
reply, then it assumes it's a record reply without actually checking.
This will cause
Also, this means there's a second bug that likely resides in the server.
An X record client shouldn't be receiving any replies other than XRecord
replies.
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sometimes it starts when I am on battery.
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Title:
syndaemon consumes 100% CPU
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It would be helpful if someone could get a backtrace of syndaemon while
it's stuck. First, install xserver-xorg-input-synaptics-dbgsym. To
install it, do one of the following:
* Enable the ddebs repository:
$ sudo add-apt-repository deb http://ddebs.ubuntu.com/ natty main
$ sudo apt-get
** Changed in: xserver-xorg-input-synaptics (Ubuntu Natty)
Milestone: None = ubuntu-11.04
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Title:
syndaemon consumes 100% CPU
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Hi Chase,
Here's the trace from my machine:
0x7fc4f72dc123 in select () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) backtrace
#0 0x7fc4f72dc123 in select () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00401c3d in record_main_loop (display=value optimized out,
idle_time=0.5)
Oh and the versions are:
xserver-xorg-input-synaptics 1.3.99+git20110116.0e27ce3a-0ubuntu11
xserver-xorg-input-synaptics-dbgsym 1.3.99+git20110116.0e27ce3a-0ubuntu11
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I get a very similar traceback. It's not very illuminating!
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Title:
syndaemon consumes 100% CPU
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strace shows:
select(5, [4], NULL, NULL, NULL)= 1 (in [4])
select(5, [4], NULL, NULL, NULL)= 1 (in [4])
select(5, [4], NULL, NULL, NULL)= 1 (in [4])
select(5, [4], NULL, NULL, NULL)= 1 (in [4])
select(5, [4], NULL, NULL, NULL)= 1 (in [4])
select(5, [4],
Thanks Jonathan. After killing the process (syndaemo) the CPU usage goes
back to normal, and I don't notice any functional difference. My usb
mouse and touchpad both function normally.
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Same problem on my HP EliteBook 6930p, and it's really annoying.
Anyone found a solution to fix this?
Ubuntu Natty 11.04 b1
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Title:
syndaemon
The workaround for the moment is to remove the option to stop the
touchpad whole typing (somewhere in the mouse options... sorry I'm not
in front of my pc at the moment).
The other workaround is to kill the daemon as soon as it goes crazy :)
But these are no solutions, just workaround...
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Also experiencing this on a Toshiba L655 with the daily build of 11.04.
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Title:
syndaemon consumes 100% CPU
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Same problem here.
My laptop was really shouting before I suspect that syndaemon eats my CPU.
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Title:
syndaemon consumes 100% CPU
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The same issue. 100% cpu usage.
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Title:
syndaemon consumes 100% CPU
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It uses 100% cpu on my laptop either after logging in or after resume,
and I don't think it's related to whether I have a USB mouse plugged in
(syndaemon is supposed to monitor the keyboard and disable the touchpad
when you're typing).
I've (hopefully) turned it off now via the setting control
I think the priority of this bug should be raised as it could cause
notebooks to overheat if the syndaemon process is not killed manually
by the user (some users won't know how to do this).
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I have the exact same problem but only as soon as I plug a USB Mouse...
My laptop boots fine or runs fine, as well as my ClickPad (I have a HP
Envy with this new type of touchpad) as long as I have my usb mouse
unplugged.
If I have my USB Mouse plugged in at boot or plug it afterwards,
Hy!
I have the same problem, but still can't find what triggers it :(
I just tryed to remove my usb mouse and reconnect it, but syndaemon now behaves
normally...
I always notice that my system is slow and check that syndaemon is runing 100%
after continous work without sleep and mouse
The same issue. 100% cpu usage. Haven't seen it before.
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Title:
syndaemon consumes 100% CPU
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Testing Natty by booting from a USB stick. I have syndeamon running at
close to 100% (noticed because the fan got loud).
Happens right after boot every time. Have to end the process. No USB
mouse connected. Happens on a Dell XPS Studio 16 Laptop.
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** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Status: New = Confirmed
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Title:
syndaemon consumes 100% CPU
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