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Old 12-21-2008, 01:10 PM   #1
Registered: Dec 2006
Posts: 271

Rep: Reputation: 31
Can't access shared memory area. SHMConfig disabled?

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

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:
me@tpt60:~$ grep synaptics /var/log/Xorg.0.log
(II) LoadModule: "synaptics"
(II) Loading /usr/lib/xorg/modules/input//
(II) Module synaptics: vendor="X.Org Foundation"
Here are my configuration files:
Xorg config:
kernel config:

Last edited by alkos333; 12-21-2008 at 04:24 PM.
Old 12-21-2008, 01:55 PM   #2
Registered: Oct 2005
Location: Rhode Island, USA
Distribution: Slackware, Xubuntu
Posts: 348

Rep: Reputation: 32
You will need to create a file:
Place the following in that file:
<?xml version="1.0" encoding="ISO-8859-1"?>
<deviceinfo version="0.2">
  <match key="input.x11_driver" string="synaptics">
   <merge key="input.x11_options.SHMConfig" type="string">True</merge>
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:
tmpfs /dev/shm tmpfs defaults 0 0
Also, I'm not noticing the following line in your xorg.conf:
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:
Section "ServerLayout"
    Identifier     "Simple Layout"
    Screen         "Screen 1" 0 0
    InputDevice    "Mouse1" "CorePointer"
    InputDevice    "Synaptics" "SendCoreEvents"
    InputDevice    "Keyboard1" "CoreKeyboard"

Last edited by zetabill; 12-21-2008 at 02:46 PM. Reason: completed full post... sorry for crappy earlier post!
Old 12-22-2008, 07:00 PM   #3
Registered: Dec 2006
Posts: 271

Original Poster
Rep: Reputation: 31
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!


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