[Bug 192347] New: Multimedia keys on Dell XPSM1330 are detected multiple times on a single keypress

[augusto]

https://bugs.kde.org/show_bug.cgi?id=192347

           Summary: Multimedia keys on Dell XPSM1330 are detected multiple
                    times on a single keypress
           Product: kde
           Version: 4.2.2
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: unassigned-bugs at kde.org
        ReportedBy: augu at aruba.it


Version:            (using KDE 4.2.2)
OS:                Linux
Installed from:    Ubuntu Packages

This bug was originally reported as a KMix issue. Some test I performed show
that this is NOT a KMix issue, but it's related to KDE. Please read on.

Pressing a multimedia key on a Dell XPSM1330 laptop (e.g. Mute, VolumeUp or
VolumeDown) causes multiple detection of the key itself.
For example if I press VolumeUp key just one time, I see the volume raising as
I had pressed two or three times.

All multimedia keys worked fine for me in KDE 3.5 and I see this wrong behavior
since KDE 4.1 (the first version I tried on Kubuntu 8.10).

I attach here the results of three different tests I perfomed using xev and
hitting two different buttons (Mute and VolumeDown) _just one time_.

The first test is done outside KDE (I opened a second X server and launched xev
from a xterm there, see attachment comments).
You can see that only two key presses/releases are correctly detected.

The second test is done in a KDE 4.2 session, after closing KMix. You can see
that multiple key presses/releases are wrongly detected.

The third test is done in a KDE 4.2 session, with KMix running. You can see
that only multiple releases are detected (here also some focus changes are
visible). KMix seems to "steal" key presses, but not key releases.

My conclusions from these tests are the following:
- It is not an hardware problem.
- It is not a kernel/driver problem.
- It is not a Xorg bug (at least not Xorg taken alone).
- It is related to KDE (outside a KDE session keys presses/releases are
detected correctly).
- It is not a KMix bug, multiple key presses/releases are detected also after
closing KMix, but I don't know if it's normal that KMix is stealing key
presses, but not key releases from xev output.

So the question is: what is the best place to report this bug? I report here in
the generic KDE product, hoping that someone could point me to the right
product.

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