[ltp] Mousepin troubles after suspend/sleep/hibernate

[Tod Harter]

You might solve the mouse pointer problem by configuring your X server to use 
a software cursor. 

In your XF86Config-4 file find the following....

    # Uncomment following option if you see a big white block
    # instead of the cursor!
    #    Option      "sw_cursor"

and uncomment the option. It may or may not fix the problem, but my guess is 
that it will. Note that there is some slight negative impact on performance, 
but on a machine as new as an R30 I doubt you'll notice it.

The other problem sounds similar to ones I've had with KDE. I think its a KDE 
2.2.x bug. Once in a while I'll have a window get "stuck" or a menu or some 
other desktop element. I think KDE misses an input event and gets a bit 
confused and from then on you're in semi-lala land. I've found that a lot of 
times you can work your way out of these jams by selecting various things on 
the desktop or changing focus with keyboard shortcuts a few times. I don't 
think KDE 2.2.x series is the most stable desktop ever :(. The funny thing is 
it seems to happen in spurts. I've had no trouble for the last 2 weeks, and 
before that I had 2 weeks of nothing but flakiness. I have a strong suspicion 
that running CPU intensive background tasks like multi-media applications and 
such is the culprit. The Linux kernel, as you may know, is kind of primitive 
in many respects, and one of the main ones is its handling of concurrency. 
Essentially the entire kernel is non-reentrant, so its possible that if 
you're using xmms or playing video or streaming audio that KDE's input event 
handlers, or the X server's interrupt handlers simply can't get in there fast 
enough sometimes. Work is ongoing to fix the whole problem, which I hear 
results in about 40% improvement in desktop responsiveness. 2.6 or maybe 
later 2.4 series should incorporate at least some of that pretty soon :o).

On Wednesday 08 May 2002 04:52, James Holden wrote:
> Morning Zeimot!
>
> I'm having similar problems on my 600X! I posted to the list but nobody
> seemed to have a clue.... To be honest, I haven't really got round to
> looking into it in any depth yet. I'm also running Mdk 8.2, and it never
> happenned in 8.0. The symptoms I get are similar, in that I can't
> left-drag, but it mysteriously corrects itself after some random amount of
> time! Restarting the X server doesn't fix it.
>
> James
>
> Quoting ZeiMoT <zeimot@astrakan.hig.se>:
> > Hi all,
> >
> > Spec: Thinkpad R30, Mandrake 8.2
> > I have no trouble entering sleep mode nor returning from it when pressing
> > the Fn-button.
> > The same goes for hibernation, it works perfectly (even though I would've
> > prefered a faster mem >> hd time and vice versa)
> > Suspend seems to be the same as sleep...
> >
> > Some 10 seconds after returning from either one of them the dragging
> > ability of the left mouse button refuses to work. I will send only a
> > click when I release it, and nothing while holdning it down. The middle
> > mouse button dragging still works though.
> >
> > If I switch between suspend and unsuspend a couple of times (random
> > amount of times) the drag function will work again. This is very
> > annoying. Rebooting X (KDM included) solves the dragging problem too.. :(
> >
> > I have another mouse problem that seems to happen on random. When it
> > happens the drawn mousepointer is drawn about 20-40px to the right of the
> > logical mousepionter. When that happens no X-reboot will help. The ony
> > thing that helped was to shutdown and coldboot the machine.
> >
> > Anyone else with an R30 that has got a similar problem?
> >
> > How do I 'debug' these problems, ideas ?
> >
> >
> >   -=< ZeiMoT >=-
> >
> >
> >         /_________  ___   _  ___ ___   ____ ________\
> >        //  _______)(___  (  (   V   ) (    )  (     \\
> >       //  (________(______)__)  |  (___\__/____)     \\
> >      /=================================================\
> >     /              zeimot@astrakan.hig.se               \
> >
> >
> > ----- The Linux ThinkPad mailing list -----
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> > http://www.bm-soft.com/~bm/tp_mailing.html

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