xorg-server blocks on /dev/sysmouse

[Warren Block]

On Fri, 24 Feb 2012, Maxim Ignatenko wrote:

> On ??, 23 ??? 2012 21:33:28 Warren Block wrote:
>> On Thu, 23 Feb 2012, Maxim Ignatenko wrote:
>>> Hello -x11@,
>>>
>>> I have xorg-server with staticaly configured input
>>> devices (USB mouse configured via sysmouse+moused).
>>> Sometimes picture and all GUI threads of running
>>> processes freezes until I move mouse. This issue
> appeared
>>> long time ago (I've noticed it more than year ago
>>> http://juick.com/gelraen/966367 (russian)), but I'm
>>> reporting it only now, sorry :(
>>>
>>> This patch seems to solve the problem:
>>> http://paste.org.ru/?rgm0m6
>>>
>>> This patch does the same, but for xorg-server
> 1.10.6:
>>> http://dpaste.com/707312/
>>
>> Are you disabling AllowEmptyInput?
>> http://www.wonkity.com/~wblock/docs/html/aei.html
>
> Yes, all input devices configured statically.
> AutoAddDevices is also turned off.

Sorry, I was not clear enough.  If AllowEmptyInput is set to Off, it can 
cause this exact problem--nothing runs until the mouse is moved.  The 
solution in that case is to not set AEI at all, let it default.