Comment # 33 on bug 700416 from Egbert Eich

Felix, thanks for answering - I do realize that this ticket is quite old ;)

Since it is so log that you've reported it: first we should find out if it can
still be reproduced anywhere. If not it is likely it got fixed over the years
and we don't have to bother.

> The most used one, a common Logitech Marble, has never to my recollection 
> exhibited any type of failure on an already installed system.

OK.

> I don't remember (comment 25 was over two years ago). Comment 6 possibly 
> answered this implicitly. The comment 25 host m7ncd is one I hope to try a >
> fresh TW installation on to follow up here. It does have operating 32 bit 
> installations of all from 10.0 through TW except for 10.3 and 11.2, plus recent 
> Fedoras and Mageias, making new evdev tests possible if they would be helpful 
> here.

Please boot the TW system and perform the 'evtest' tests as in comment #25.
When pressing and releasing the left button the output should look like this
(without the line numbers):

1. Event: time 1447341561.360842, type 1 (Key), code 272 (LeftBtn), value 1
2. Event: time 1447341561.360842, -------------- Report Sync ------------
3. Event: time 1447341562.963733, type 1 (Key), code 272 (LeftBtn), value 0
4. Event: time 1447341562.963733, -------------- Report Sync ------------

1.& 2. are from button press (value 1), 3.& 4. are from button release (value
0). (From the timestamps you see that the button has been pressed for more than
a second.) This was taken with a PS/2 device (like your trackball).
If you get anything else (ie 2 consecutive 'value 1' - like in comment #25),
something is wrong.
'evtest' in a recent TW should list the available devices for you.