Re: Getting up/down events working on Bamboo touchpad

Le lundi 09 juillet 2007 à 23:13 +0200, Frédéric Crozat a écrit :

> Fortunately, Mandriva kernel for 2007.x distribution has already the
> hid-core.c from 2.6.18, featuring blacklisting for wacom tablets, so no
> need to update hid-core.c. After doing more tests, I discovered our usb
> coldplug support through udev seems to cause usbmouse driver to be
> loaded before wacom driver. Moreover, I get different behaviours between
> 2 Mandriva 2007 Spring systems, where one is loading wacom driver first
> (so it doesn't cause any problem) and the other one is loading usbmouse
> first. I'll investigate further.

After more investigation, we found a fix (we had a similar issue with
some touchpad which were using usbhid) for this bug :
-currenly, Mandriva udev rules modprobe usbmouse for usb devices with
mouse class (including wacom tablets)
-we have added a new rule, processed before the "mouse class" rule,
which modprobe wacom driver when a usb device with wacom vendorid is
detected. 

This way, usbmouse will only be loaded after wacom driver and won't
drive wacom tablets.

-- 
Frederic Crozat <fred@xxxxxxxxxx>


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