There was some discussion about this bug on the linux.kernel.input group
a few months ago - see the link in comment #47.
There was an e-mail I did receive from Tommy Will which I thought was
also posted to the newsgroup, but apparently not, so I'm going to
include it here:
Sorry for wait a
Adding another attachment from the quoted e-mail in previous comment.
** Attachment added: "dell_e7440_investigation_v1.tar.gz"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1258837/+attachment/4131534/+files/dell_e7440_investigation_v1.tar.gz
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@pali - I didn't write that message, I was forwarding the contents of
the e-mail from Tommy Will, who was the author.
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https://bugs.launchpad.net/bugs/1258837
Title:
[Dell
> Since I reported the problem I changed this power adapter and did not
see the problem again. Do you use a non-Dell or non-compatible Dell
power adapter ?
I've always been using the standard Dell power adapter that came with
the laptop. The last time it happened, the laptop was running from
batte
Scott - do you see the "driver resynced" messages in syslog when the
cursor jumps around (as I described in bug 1258837)?
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https://bugs.launchpad.net/bugs/1272624
Title:
[D
I've posted in gmane.linux.kernel.input group (or is it just
"linux.kernel.input"?) about a week ago without a reply.
My feeling is that this is a kernel bug, rather than specifically an
Ubuntu one. But I don't know how to get the attention of the correct
people to help fix it.
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Having this problem as well with my Dell Latitude E7440 - switching to
performance seemed to help as well (thanks Laurent!)
The slowdown doesn't always happen, but it does appear to happen after
sometimes resuming from standby. I've not known whether to blame it on
the DE I was using (Cinnamon) or
Public bug reported:
This is very similar to bug 1048258 - the mouse cursor keeps on jumping
around, and these messages appear in the log when it hapepns:
Dec 7 21:57:26 wyvern kernel: [ 648.133841] psmouse serio1: DualPoint
TouchPad at isa0060/serio1/input0 lost sync at byte 1
Dec 7 21:57:26
Tested with the newer kernel - running "uname -a" gives me:
Linux wyvern 3.13.0-031300rc3-generic #201312061335 SMP Fri Dec 6 18:37:23 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux
And in the logs:
Dec 10 01:01:59 wyvern kernel: [ 814.172751] psmouse serio1: DualPoint
TouchPad at isa0060/serio1/input
@Kyle Fazzari - it turns out that my laptop has an Alps touchpad rather
than a Cypress one, so the fix would have no effect for me anyway..
Searching for the error message had brought me here, so I presumed it
was the same issue. I've opened up a separate bug for the Alps touchpad
(see #1258837).
Would it be fair to say that this issue should be raised directly with
the gmane.linux.kernel.input group to make progress?
@Carl W - You might possibly find the tip in comment 5 useful to stop
the jumpiness of the pointer. Alternatively, you could use a much older
kernel which will use the generi
Updated the BIOS as you suggested. From the terminal:
allanc@wyvern:~$ sudo dmidecode -s bios-version && sudo dmidecode -s
bios-release-date
A06
12/05/2013
allanc@wyvern:~$ uname -a
Linux wyvern 3.13.0-031300rc3-generic #201312061335 SMP Fri Dec 6 18:37:23 UTC
2013 x86_64 x86_64 x86_64 GNU/Linux
I've disabled suspend on the laptop and continued to use the laptop so
that even the screensaver doesn't kick in. I've also removed resetafter
kernel parameter.
I booted the laptop with both kernels, ran "tail -f /var/log/kern.log"
in a terminal and left it running until I saw error messages (and
It's a fairly new machine, so the only other Linux OS it has had on it
is Linux Mint 15, which is based on 13.04. The problem seems to be more
frequent there.
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https://bugs.la
Tested it in the same way on Precise as described in comment 9, same results..
Again - tailing kern.log:
Dec 20 23:50:17 wyvern kernel: [ 108.890147] EXT4-fs (sda5): recovery complete
Dec 20 23:50:17 wyvern kernel: [ 108.892446] EXT4-fs (sda5): mounted
filesystem with ordered data mode. Opts: (
I tried using the kernel version that came with the released version of
12.04 (on an original install base of 12.04.3), but that seemed to cause
stability problems.
So instead, I installed the original version of 12.04, and that seemed
to work without reporting any problems.
I then installed 12.0
>From 3.5.0-30 and earlier:
⎡ Virtual core pointerid=2[master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4[slave pointer (2)]
⎜ ↳ PS/2 Generic Mouse id=12[slave pointer (2)]
>From 3.5.0-31 onwards:
⎡ Virtual
Just based on the last test that I did, it would seem that the drivers
in use in kernel 3.5.0-31 are different to the generic mouse ones in
kernel 3.5.0-30 (looking at the output from xinput) - rather than that a
bug was introduced into the same set of drivers.
If the generic mouse drivers work an
> As Allen Crooks is the original reporter, I would like
> to let him decide which he would prefer.
What I would prefer? What are my choices? I'd prefer to be able to use
the touchpad-specific driver without any sync issue.
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Has the patch been applied to any recent kernel releases?
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https://bugs.launchpad.net/bugs/1048258
Title:
Cypress trackpad gets psmouse lost sync / driver resynced warnings
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