Can't access shared memory area. SHMConfig disabled?

alkos333 · 12-21-2008, 02:10 PM

So I get the following when I try running "synclient -l":

Code:

Can't access shared memory area. SHMConfig disabled?

I've commented out all options for psmouse module as per CHANGE_AND_HINTS.TXT

The module seems to be loaded fine by Xorg:

Code:

me@tpt60:~$ grep synaptics /var/log/Xorg.0.log
(II) LoadModule: "synaptics"
(II) Loading /usr/lib/xorg/modules/input//synaptics_drv.so
(II) Module synaptics: vendor="X.Org Foundation"

Here are my configuration files:
Xorg config: http://turing.cs.niu.edu/~z147107/xorg.conf
kernel config: http://turing.cs.niu.edu/~z147107/config-2.6.27.7
fstab: http://turing.cs.niu.edu/~z147107/fstab

zetabill · 12-21-2008, 02:55 PM

You will need to create a file:

Code:

/etc/hal/fdi/policy/shmconfig.fdi

Place the following in that file:

Code:

<?xml version="1.0" encoding="ISO-8859-1"?>
<deviceinfo version="0.2">
 <device>
  <match key="input.x11_driver" string="synaptics">
   <merge key="input.x11_options.SHMConfig" type="string">True</merge>
  </match>
 </device>
</deviceinfo>

I adapted this information from here and it works on my system but you have to have shared memory enabled in your /etc/fstab by adding the following:

Code:

tmpfs /dev/shm tmpfs defaults 0 0

Also, I'm not noticing the following line in your xorg.conf:

Code:

InputDevice    "Synaptics" "SendCoreEvents"

This might be accidental to your shared memory problem but I always needed to add this to my xorg.conf like so:

Code:

Section "ServerLayout"
    Identifier     "Simple Layout"
    Screen         "Screen 1" 0 0
    InputDevice    "Mouse1" "CorePointer"
    InputDevice    "Synaptics" "SendCoreEvents"
    InputDevice    "Keyboard1" "CoreKeyboard"
EndSection

alkos333 · 12-22-2008, 08:00 PM

Yes, that one line has resolved the problem. I don't use HAL anyway, so that file wasn't necessary.

Thank you so much for helping out!