[compiz] Bug with evdev corepointers

[Thomas Liebetraut]

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Just wondering if really nobody has this problem or if everybody just
missed my mail... :-)


So long,
Thomas


Thomas Liebetraut schrieb:
> 
> Hello everybody,
> 
> Those who are active in #Xgl on freenode know that I've had segfaults
> when starting Xgl during the last few weeks (which is also why there was
> no progress on my g-w-d rewrite).
> Today I found the time to debug Xgl and to find the bug.
> My mouse was configured as evdev device in xorg.conf, and to use it, it
> was set as the corepointer. With this setting, Xgl reproducably
> segfaults in xglxPointerProc() when returning from this function (the
> last thing gdb does is "pop ebp", which I think pretty strange) on
> device initialization (the function is called with  onoff==DEVICE_INIT).
> The return value of InitPointerDeviceStruct() is 1.
> This bug only occurs if I have 'Option "CorePointer"' in my InputDevice
> section. If I remove this line, Xgl works fine, but I can't use my mouse
> to move the pointer.
> There is someone else on ubuntuforums.org
> (http://ubuntuforums.org/showthread.php?t=193946) who has the same problem.
> The same configuration worked for me some weeks ago, but I can't say
> which update rendered Xgl useless for me.
> Is there any solution to this problem or can anyone else confirm this?
> Support for evdev would be really nice for people with modern Logitech mice.
> I don't know X code and architecture good enough (by far) to do more
> debugging on it on my own (not to mention solving the problem).
> 
> Here is my minimal InputDevice section that causes the error:
> ---->8-------->8-------->8-------->8----
> Section "InputDevice"
>         Identifier      "Logitech MX1000"
>         Driver          "evdev"
>         Option          "CorePointer"
>         Option          "Device"                "/dev/input/event2"
> EndSection
> ---->8-------->8-------->8-------->8----
> 
> And my usual config that I'd like to be working ;-)
> ---->8-------->8-------->8-------->8----
> Section "InputDevice"
>        Identifier      "Logitech MX1000"
>        Driver          "evdev"
>        Option          "CorePointer"
>        Option          "Device"                "/dev/input/event2"
>        Option          "Buttons"               "12"
>        Option          "ZAxisMapping"          "4 5 7 6"
>        Option          "Emulate3Buttons"       "no"
>        Option          "ButtonMapping"         "1 2 3 8 9 10 11 12"
> EndSection
> ---->8-------->8-------->8-------->8----
> 
> 
> Regards,
> Thomas
> 
> 
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