Re: More ULE bugs fixed.

On Wed, Nov 05, 2003 at 11:28:50AM +0100 I heard the voice of
Eirik Oeverby, and lo! it spake thus:
> 
> The second is that mouse messages are actually *lost*, or bogus ones are 
> being generated. I guess it's the first, making moused or X misinterpret 
> the messages it gets. Where along the chain it fails I obviously have no 
> clue. The consequence of this is that when the mouse stops (like in #1) 
> but then resumes from an entirely different point - be it 10 pixels away 
> or at the other end of the screen - possibly even generating a button 
> push (but not necessarily the corresponding button release) message.

Note that I've had this to a greater or lesser extent for as long as I
can remember (certainly back to 3.0-CURRENT).  It corresponds with
syslog'd messages on my xconsole along the lines of:

Nov  3 12:46:13 mortis kernel: psmintr: out of sync (00c0 != 0000).
Nov  3 12:46:13 mortis kernel: psmintr: discard a byte (12).

It's certainly a lot more common (by orders of magnitude) on 5.x in the
past...   oh, I dunno, year-ish, than it was previously.  I lose mouse
function for maybe a second, then it squirms itself off somewhere on the
screen and sends some button press events.

I'm currently running 5.1-R, the traditional scheduler, a PS/2 mouse with
no moused.  And since I got them (much more rarely) with earlier
5-CURRENT's, and with 4-CURRENT's, etc, I can't see how it's scheduler
related.


> When you say you get the bogus mouse events (which I believe you are 
> saying atleast ;) only during load, I'm immediately thinking that yes, 
> that might make sense.

I don't get it only under load; sometimes from flat idle.  However, it's
usually when I first move the mouse, after it sitting still for a while
(where 'while' can vary from a few seconds to a few days, of course); it
hardly ever happens in mid-move.



-- 
Matthew Fuller     (MF4839)   |  fullermd_at_over-yonder.net
Systems/Network Administrator |  http://www.over-yonder.net/~fullermd/

"The only reason I'm burning my candle at both ends, is because I
      haven't figured out how to light the middle yet"