Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gnome-settings-daemon (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/882916
Title:
Panning doesn't work on Ubuntu 11.10 because the gnome-setting will
reset the screen size
Status in “gnome-settings-daemon” package in Ubuntu:
Confirmed
Bug description:
Issue: When the user try to set the panning by using the command “xrandr
--output CRT1 –panning 1600x1200 ”(the panning size should be larger than the
mode size) , we can not move the pointer to the new extra area, that means the
user can not set panning.
there are two reasons for the issue:
(1)the CRTC cursor confinement has been enabled in the Ubuntu's patch , and
it will limit the cursor position (this panning issue has been resolved on
Redhat)
(2)even the above issue has been fixed in Ubuntu , the panning also can not
be enabled when we set panning at first,
and the reason is that in the package of gnome-settings-deamon , the code
will reset the screen size information if there is no matched primary output .
However , in the graphic driver , the pscrnpriv -> primaryoutput will not be
initialized at any function area , until the gnome-settings-deamon has done the
resize operation.
Here I think there may be two bugs in the gnome-setting-deamon
a. for the function get_required_virtual_size() , it should get the screen
size , but it get the mode size actually
b. the judgment about ensure_primary is not very exactly , because the
primaryoutput has not been initialized at first
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