[regression] rapid pointer movements with touchpad ignored

The problem occured with this upgrade:

[UPGRADE] xserver-xorg-input-synaptics 1.1.2-1ubuntu1 -> 1.1.2-1ubuntu2

This is not a problem with X mouse acceleration, as it still occurs after “xset m 1/1 1”

Reason for nomination:

1. Regression: Can be trivially fixed by removing the patch that broke things.

2. Bug is deal breaker for users of affected hardware.

It's probably the over-broad 112_jumpy_cursor_quirks.patch, which I've expressed concerns about before.

Yes, indeed, recompiling without 112_jumpy_cursor_quirks.patch fixes the issue.

@Marc

Please follow these steps so that I can see what's happening:

1. Enable the "universe" repository and refresh your packages list.

2. Download and install the deb package of "synaptics-report" (which works on hardy, jaunty and karmic) from this PPA: https://launchpad.net/~albertomilone/+archive/ppa

3. Press CTRL-ALT-F1 to go to the 1st terminal (you'll see only the command line) and log in.

4. Type the following command:

sudo synaptics-report

and follow the instructions which the program will give you.

5. Press ALT-F7 to go back to your desktop environment

6. Look for the synaptics_report.log file in the same directory in which you executed the synaptics-report command (usually your home directory) and attach the file.

Confirming these symptoms on Acer Aspire One. I will do a synaptics-report now.

Whilst running synaptics-report, there was a shell error message. The line:
        if [ $MAJOR -ge 1 ] && [ $MINOR -ge 4 ]; then
is inadequately quoted. As the line:
    # NOTE: this won't work outside of X
indicates, this part won't work outside of X, in which case $MAJOR and $MINOR will be empty strings. You should defensively quote them. ( [ "$MAJOR" -ge ......)

Also, the logic of the version test is wrong: Should be ( major > 1 || ( major == 1 && minor >= 4 ) ), not ( major >= 1 && minor >= 4 ).

Now, on to the actual attachment....

Same deal here on an MSI Wind U100.

@Max
Yes, that note was written to remind me to remove those lines.

My next patch will detect the name of your laptop/netbook and preserve the default behaviour unless it's dealing with a Dell Mini10v

I suspect this issue could be related with the one I described in bug #414127. Is anyone who is experiencing this issue also experiencing issues like the one I described there?

This bug was fixed in the package xserver-xorg-input-synaptics - 1.1.2-1ubuntu3

---------------
xserver-xorg-input-synaptics (1.1.2-1ubuntu3) karmic; urgency=low

  * debian/patches:
    - 112_jumpy_cursor_quirks.patch: Make sure that the quirk
      affects only the Dell Mini 10v (LP: #405943).
    - 103_enable_cornertapping.patch: Don't trigger middle click
      when tapping on the top right corner button (LP: #386017).

 -- Alberto Milone <email address hidden> Mon, 17 Aug 2009 10:31:14 +0200

Works for me. Thank you.

Works fine for me, too.

@ Alberto Milone:
I don't think disabling the middle click corner tapping completely is the best solution, but let's discuss this in Bug 386017.