Public bug reported:
The Alps touchpad driver (drivers/input/mouse/alps.c) is currently
hardcoded to enable "hardware tapping" when it initializes the hardware
in alps_hw_init()--
if (alps_tap_mode(psmouse, 1)) {
printk(KERN_WARNING "alps.c: Failed to enable hardware
tapping\n");
return -1;
}
This code is also executed when the driver loses synchronization and
resets.
Because of this, the setting for "Enable mouse clicks with touchpad" in
the System->Preferences->Mouse->Touchpad configuration dialog is
overridden and tap-to-click is incorrectly enabled if there's ever a
communication error between the driver and the touchpad like--
May 12 23:58:44 icarus kernel: [15900.288359] psmouse.c: GlidePoint at
isa0060/serio1/input0 lost sync at byte 1
May 12 23:58:44 icarus kernel: [15900.303912] psmouse.c: GlidePoint at
isa0060/serio1/input0 - driver resynched.
ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
HibernationDevice: RESUME=UUID=b7adc0f5-d880-4c1a-95ea-e1df89a77a6f
MachineType: Sony Corporation VGN-SZ650N
Package: linux-image-2.6.28-11-generic 2.6.28-11.42
ProcCmdLine: root=UUID=3ee4953e-48f0-497c-ae78-18cbb18cfef8 ro quiet splash
ProcEnviron:
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.28-11.42-generic
SourcePackage: linux
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug
--
Alps touchpad re-enables tap-to-click on resync
https://bugs.launchpad.net/bugs/375860
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