Bug#182319: xserver-xfree86: busy host causes mouse to go wild
On Wed, Feb 26, 2003 at 04:57:25PM -0500, Branden Robinson wrote:
> On Mon, Feb 24, 2003 at 04:14:34PM +0000, Luke Kenneth Casson Leighton wrote:
> > Package: xserver-xfree86
> > Version: 4.2.1-5
> > Severity: normal
> >
> > this _may_ be kernel-related.
>
> I suspect so.
... why would x version 3 work fine (same kernel),
and xfree86 v4 not?
(i _do_ understand that interactions between kernel drivers
and x-servers can cause problems when one is upgraded, especially
if there are assumptions made between the two about their
interaction.
this was exactly the problem that i had with the upgrade
from X11r2 to X11r4 on the Atari Transputer Workstation, 10
years ago: the mouse driver assumed that X11r2 would leave
mouse events in the queue for a while before processing them,
such that a two-button press could be detected and one event
modified into a middle-button event and the other one deleted.
X11r4 changed and took the mouse events out the queue _Immediately_
so this brain-dead middle-button code subsequently never worked.
i had to add in a timer interrupt routine and basically
Do A Proper Job...)
> > it _may_ be related to the keyboard bugs that have also
> > been reported.
>
> I doubt this.
you are entitled to your doubts, in the same way that
i am entitled to guess as to where the problem might lie
and to inform you and others of those guesses.
i only mention it because there is an outstanding
kernel-related keyboard bug i saw in the lists of "is this
bug already in this list?" thing.
if someone is going to investigate that one in the kernel,
they might wish to investigate this one as well.
that's all.
> > it would appear that the mouse issues under heavy load, whilst
> > better, are still not completely resolved.
> [...]
> > basically the issue is that under heavy load, where the machine
> > is so busy it cannot refresh the screen for at least half a
> > second at a time or more, if the mouse pad (sony vaio) is touched
> > during this time, the mouse pointer goes "spang" into the top-right
> > hand corner and starts shoving menus all over the place.
>
> I've seen the same problem on my 2001 iBook 600 MHz when the internal
> hard drive is under heavy load.
that's the one!
hard drive activity: at the same time, mouse goes mad if you move it.
as i mentioned above, this did not occur under the ATI accelerated
X server (version 3).
hope this all helps,
l.
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