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Bug 241508 - Option SHMConfig on should be added with synpatics drivers
Option SHMConfig on should be added with synpatics drivers
Product: Fedora
Classification: Fedora
Component: pyxf86config (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Adam Jackson
Depends On:
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Reported: 2007-05-26 20:56 EDT by Roland Wolters
Modified: 2018-04-11 04:36 EDT (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2007-11-03 10:50:19 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Roland Wolters 2007-05-26 20:56:55 EDT
Description of problem:
In case of touchpads the synaptics driver is automatically added to xorg.conf 
which is generated by pyxf86config.
However, the section about the synaptics drivers is missing the option
Option      "SHMConfig" "on"

Without this option the touchpad cannot easily be de/activated on the fly by 
other applications (synclient, ksynaptics).
Comment 1 Matěj Cepl 2007-09-11 20:34:10 EDT
Since this bugzilla report was filed, there have been several major updates,
which may have resolved this issue. Users who have experienced this problem are
encouraged to upgrade their system to the latest version of their distribution

Please, if you experience this problem on the up-to-date system, let us now in
the comment for this bug, or whether the upgraded system works for you.

If you won't be able to reply in one month, I will have to close this bug as
Comment 2 Roland Wolters 2007-09-12 09:16:12 EDT
The bug is of course still valid - only Fedora 8 will show if it has been 
Comment 3 Matthias Clasen 2007-09-14 18:30:15 EDT
My understanding from conversations with X people is that the SHMconfig thing is
a terrible hack and a possible security risk.  
Comment 4 Roland Wolters 2007-09-14 18:58:34 EDT
SHMconfig is required to be able to turn on or off the touch pad. So as a 
result it is a security risk in Linux to be able to turn off the touch pad.

Strange and not very userfriendly.
Comment 5 Roland Wolters 2007-11-03 10:50:19 EDT
Bug closed as WONTFIX.
For the archive: changing the touchpad behaviour is a security risk as long as 
every user can do this without any kind of authentication (which is the case 
with that option).

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