** Changed in: linux
Status: New => Invalid
** Changed in: xserver-xorg-input-synaptics
Status: New => Invalid
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Title:
** Changed in: linux (Ubuntu)
Status: Triaged => Fix Released
** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Status: Confirmed => Fix Released
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I pulled apart my laptop and cleaned and re-seated the keyboard and
touchpad cables. Since then I haven't had this issue occur.
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I'm getting the same problem in 15.10 on a Lenovo Thinkpad Yoga S1.
Strange thing is it sometimes works fine for ages, then other times it
drops out every few seconds; enough to make it unusable.
syslog shows the following during a dropout:
Mar 1 16:07:54 vikyoga kernel: [26685.609961] psmouse
Tested Trusty and Kernel 3.13-rc8. The issue is still there.
** Tags added: kernel-bug-exists-upstream kernel-bug-exists-
upstream-v3.13-rc8
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Mathias Dietrich, the issue you are reporting is an upstream one. Could
you please report this problem through the appropriate channel by
following the instructions _verbatim_ at
https://wiki.ubuntu.com/Bugs/Upstream/kernel ?
Please provide a direct URL to your e-mail to the mailing list once you
@Christopher: I will retest the latest Kernels within the next few days.
@Jon: I propose to keep an eye on the upstream bug-report, which I linked here
in the past (https://bugzilla.kernel.org/show_bug.cgi?id=8740). Even though it
was removed from this bug tracker, it's still open in the
Mathias Dietrich, this bug was reported a while ago and there hasn't
been any activity in it recently. We were wondering if this is still an
issue? If so, could you please test for this with the latest development
release of Ubuntu? ISO images are available from
Although I await Mathias's reply, this is absolutely a current problem
for me on a recently purchased Thinkpad t440s with:
uname -a:
Linux mv8 3.11.0-15-generic #23-Ubuntu SMP Mon Dec 9 18:17:04 UTC 2013 x86_64
x86_64 x86_64 GNU/Linux
What is it about the latest dev release / kernel that you
Jon Vaughan, thank you for your comment. So your hardware and problem may be
tracked, could you please file a new report with Ubuntu by executing the
following in a terminal while booted into a Ubuntu repository kernel (not a
mainline one) via:
ubuntu-bug linux
For more on this, please read
Christopher, I have raised
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1268365
However this bug (896922) was originally created by Matthias after he
was told do do so in similar circumstances on
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/773433, a bug which
is now marked as
I still have the issue, update after update since 3.2.0-45 on my Lenovo
L520
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Title:
Lenovo L520 - psmouse.c: touchpad at
klamm2001, so your hardware may be tracked, could you please file a new report
by executing the following in a terminal while booted into a Ubuntu repository
kernel (not a mainline one) via:
ubuntu-bug linux
For more on this, please read the official Ubuntu documentation:
Ubuntu Bug Control and
All,
I'm facing the same problem since yesterday. The trackpoint (I don't use
touchpad) just freezes on my Thinkpad T420 running 12.04 and
3.2.0-57-generic-pae kernel.
After reading the entire thread, I also tried Gero's suggestion but it didn't
work for me.
For the first time (when trackpoint
Vipin, so your hardware may be tracked, could you please file a new report by
executing the following in a terminal while booted into a Ubuntu repository
kernel (not a mainline one) via:
ubuntu-bug linux
For more on this, please read the official Ubuntu documentation:
Ubuntu Bug Control and
@Gero: Tried the performance govenor using Kernel 3.8.0-30-generic. It
did not fix the issue, the touchpad still lost sync.
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Hi Gero:
I'm using Thinkpad L520 with 12.04 LTS, Kernel 3.2.0-54-generic, I tried
what you post but the issue is there. Any new idea?
I have this problem since 3.2.0.46-generic but not before, 3.2.0.45
works fine.
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I just discovered (using Thinkpad L520 with 12.04 LTS, Kernel
3.2.0-53-generic), that there must be something wrong with the CPU
frequency scaling.
Found this in the Arch-Linux Wiki:
'If you use CPU frequency scaling, avoid using the ondemand governor
and use the performance governor when
Mathias Dietrich, you noted in your Bug Description you could run
Maverick (10.10) which also pre-dates 11.04. Please perform the
requested action noted in https://bugs.launchpad.net/ubuntu/+source
/xserver-xorg-input-synaptics/+bug/896922/comments/62 so we may move
forward.
** Tags removed:
@ Christopher: sorry, I mixed up the release name. I meant 11.10 Oneiric
and not Lucid. As I already stated, all releases 11.04 won't work
because Sandybridge Support was added after the 10.10 release. If you
want I can test 11.04 if it helps somehow.
Nevertheless I believe that my upstream
@ christopher: Edgy won't work, as the Lenovo L520 is a Sandybridge
Laptop which is supported by Kernel since Ubuntu 11.04.
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Mathias Dietrich, this wouldn't really matter as you already noted you
could use Lucid (10.04) on this laptop, which pre-dates 11.04. Did you
mean you used Oneiric (11.10) or Lucid (10.04)?
As well, if you ment Lucid, could you please perform the requested
action noted in
Retested with Saucy and latest stable upstream kernel 3.11. It is still
possible to trigger the issue.
** Tags removed: needs-upstream-testing
** Tags added: kernel-bug-exists-upstream
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Mathias Dietrich, would you please test for this in Saucy? If
reproducible, could you please test the latest mainline kernel via
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.11-saucy/ ?
** Tags removed: kernel-bug-exists-upstream
** Tags added: needs-upstream-testing
** Changed in: linux
ThinkPad-L520 3.2.0-53-generic and *still* same issue, is the same with
the wifi turn off.
Any idea?
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Title:
Lenovo L520 -
I have this problem since 3.2.0-46 -generic, the last upgrade doesnt fix
it so in 3.2.0-51-generic you get the same error on logs:
psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at byte 4
My machine is a Lenovo l520 with 64 bit Ubuntu
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Mathias Dietrich, thank you for testing the newest mainline kernel.
Could you please provide the information following
https://wiki.ubuntu.com/DebuggingTouchpadDetection#In_case_at_least_one_of_the_Touchpad_features_work.2C_but_does_not_work_correctly_and_as_expected
?
** Tags removed:
This contains the evtest using 3.11-rc2. As this was testet using VT
where I don't see the mouse pointer, I cannot be sure whether the lost
sync event was triggered.
** Attachment added: evtest file
** Attachment added: xmodmap - 3.11-rc2
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/896922/+attachment/3746769/+files/xmodmap
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As you can see from this log, I heavily typed and at the same time moved
the mouse via touchpad until the lost-sync event was trigged.
Immedeately after the event was trigged I switched to terminal using
ALT-L+TAB and killed xev with STRG+C.
** Attachment added: xev.log - 3.11-rc2
** Attachment added: xinput - 3.11-rc2
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/896922/+attachment/3746770/+files/xinput
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Tested Kernel 3.10.2, issue still exists:
[ 153.617780] psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at
byte 1
[ 153.622898] psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at
byte 1
[ 153.627499] psmouse serio4: TouchPad at isa0060/serio4/input0 lost sync at
byte
Mathias Dietrich, could you please test the newest mainline kernel
available via http://kernel.ubuntu.com/~kernel-
ppa/mainline/v3.11-rc2-saucy/ ?
** Tags removed: kernel-bug-exists-upstream-3.10.2
** Tags added: needs-upstream-testing
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This bug is killing me long long years... I had the same problem with R61e, now
I have thinkpad L520. If I remember correctly, this bug is there miminally
since 8.04 or 7.10 (maybe 7.04?) when I began to use ubuntu.
It's absolutely irritating and frustrating to have mouse freezed sometimes 3
** Tags removed: kernel-bug-exists-upstream
** Tags added: needs-upstream-testing
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Title:
Lenovo L520 - psmouse.c: touchpad at
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