Mouse issue

John Ettedgui john.ettedgui at
Wed Mar 17 17:10:47 PDT 2010

On Mon, Mar 15, 2010 at 6:22 PM, Peter Hutterer
<peter.hutterer at> wrote:
> On Mon, Mar 15, 2010 at 05:02:46PM -0800, John Ettedgui wrote:
>> On Mon, Mar 15, 2010 at 4:46 PM, Peter Hutterer
>> <peter.hutterer at> wrote:
>> > On Mon, Mar 15, 2010 at 10:57:48AM -0800, John Ettedgui wrote:
>> >> Hello everyone,
>> >>
>> >> I have had a small issue for some time with my mouse and need some help :)
>> >>
>> >> Basically sometimes, something bad happens (what?) and then the mouse
>> >> keeps the focus on one application.
>> >> For example if I am in Firefox and the mouse works there, I cannot
>> >> click on anything in the task bar, or even if I alt-tab to konsole the
>> >> mouse will not work there. If I right click in the console, it will
>> >> behave the same way as if I was right clicking in Firefox.
>> >> One "temp fix" is to right click in the application, then right click
>> >> in the systray on the same application then I can click on another
>> >> application and so on...
>> >> This issue is usually fixed by reinstall Xorg's evdev and then restarting Xorg.
>> >
>> > this is almost certainly a stuck grab. If FF has an active grab, no other
>> > application can receive pointer events for the duration of the grab.
>> > You don't actually need to reinstall, usually restarting X is enough. In
>> > fact, making the FF window unviewable will break the grab too (e.g.
>> > minimising it)
>> >
>> > This may be an application issue or an issue with the server. To figure out
>> > what exactly happens, we'd need a reproducible test case - stuck grabs are
>> > notoriously tricky to debug.
>> >
>> > Cheers,
>> >  Peter
>> >
>> Hello Peter,
>> in the past I believe just restarting Xorg was not enough, but I'll
>> try that again next time and see.
>> What do you mean by reproducible? Since this *seems* random it is
>> quite hard for me to offer any repro.
> Usually, with stuck grabs we need to have a look at the protocol stream when
> the grab activates and the events afterwards. That can then be compared
> against the same stream from an older X server release that didn't exhibit
> this problem to figure out what changed. Since the protocol stream results
> in thousands of lines of output even for a short duration of the app, having
> it run for ages often isn't an option. Also, monitoring the protocol slows
> the application down, sometimes resulting in the bug not appearing when you
> monitor the app.
> So we need you to help us find a way how to reproduce the issue reliably.
> Since it is a grab, it's likely caused by a popup or dropdown menu or
> even scrolling. If you take more attention to your actions in the next few
> days, you might be able to recognise a pattern that triggers the bug. Then
> you can start poking at FF to intentionally reproduce it.
> Cheers,
>  Peter

So I still don't know what I did, but I got that problem  yesterday as
soon as Xorg was started, with only KDE and Konsole started.
To fix it I really had to reinstall evdev a simple restart of Xorg would not do.
Do you think that could be more of a distribution issue? I run Arch
Linux, but I don't have that issue on another Arch Linux box...


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