Problem: lockedPtrButtons keeps the state of the buttons locked by a PointerKeys button press. Unconditionally clearing the bits may cause stuck buttons in this sequence of events: 1. type Shift + NumLock to enable PointerKeys 2. type 0/Ins on keypad to emulate Button 1 press → button1 press event to client 3. press and release button 1 on physical mouse → button1 release event to client Button 1 on the MD is now stuck and cannot be released. Cause: XKB PointerKeys button events are posted through the XTEST pointer device. Once a press is generated, the XTEST device's button is down. The DIX merges the button state of all attached SDs, hence the MD will have a button down while the XTEST device has a button down. PointerKey button events are only generated on the master device to avoid duplicate events (see XkbFakeDeviceButton()). If the MD has the lockedPtrButtons bit cleared by a release event on a physical device, no such event is generated when a keyboard device triggers the PointerKey ButtonRelease trigger. Since the event - if generated - is posted through the XTEST pointer device, lack of a generated ButtonRelease event on the XTEST pointer device means the button is never released, resulting in the stuck button observed above. Solution: This patch merges the MD's lockedPtrButtons with the one of all attached slave devices on release events. Thus, as long as one attached keyboard has a lockedPtrButtons bit set, this bit is kept in the MD. Once a PointerKey button is released on all keyboards, the matching release event is emulated from the MD through the XTEST pointer device, thus also releasing the button in the DIX. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> |
||
---|---|---|
Xext | ||
Xi | ||
composite | ||
config | ||
damageext | ||
dbe | ||
dix | ||
doc | ||
exa | ||
fb | ||
glx | ||
hw | ||
include | ||
m4 | ||
mi | ||
miext | ||
os | ||
randr | ||
record | ||
render | ||
test | ||
xfixes | ||
xkb | ||
.gitignore | ||
COPYING | ||
Makefile.am | ||
README | ||
autogen.sh | ||
configure.ac | ||
cpprules.in | ||
fix-miregion | ||
fix-miregion-private | ||
fix-patch-whitespace | ||
fix-region | ||
xorg-server.m4 | ||
xorg-server.pc.in |
X Server The X server accepts requests from client applications to create windows, which are (normally rectangular) "virtual screens" that the client program can draw into. Windows are then composed on the actual screen by the X server (or by a separate composite manager) as directed by the window manager, which usually communicates with the user via graphical controls such as buttons and draggable titlebars and borders. For a comprehensive overview of X Server and X Window System, consult the following article: http://en.wikipedia.org/wiki/X_server All questions regarding this software should be directed at the Xorg mailing list: http://lists.freedesktop.org/mailman/listinfo/xorg Please submit bug reports to the Xorg bugzilla: https://bugs.freedesktop.org/enter_bug.cgi?product=xorg The master development code repository can be found at: git://anongit.freedesktop.org/git/xorg/xserver http://cgit.freedesktop.org/xorg/xserver For patch submission instructions, see: http://www.x.org/wiki/Development/Documentation/SubmittingPatches For more information on the git code manager, see: http://wiki.x.org/wiki/GitPage