Clint Byrum, this bug report is being closed due to your last comment
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-
synaptics/+bug/936552/comments/25 regarding this being fixed with an
update. For future reference you can manage the status of your own bugs
by clicking on the
Whatever the issue was it has been corrected in raring, my touchpad
works properly now.
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https://bugs.launchpad.net/bugs/936552
Title:
MacBookAir 4,1
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: lightdm (Ubuntu)
Status: New = Confirmed
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It's not really a separate touchpad, it's a /dev/input/mouseX device
registered by the mousedev driver for the same touchpad, kind of a
legacy mouse device for applications that need that sort of thing. It's
there in the good and bad case, and X seems to be (correctly) ignoring
it.
I think you
X is supposed to support hot-adding of input devices.
Here are the relevant lines that show up during a failed boot but not a
successful one:
-(II) config/udev: removing device Apple Inc. Apple Internal Keyboard / Trackpad
-(II) evdev: Apple Inc. Apple Internal Keyboard / Trackpad: Close
-(II)
The other thing I notice is that there's a separate touchpad device
that's registered between the first and second detections of the
keyboard:
[11.182] (II) config/udev: Adding input device bcm5974 (/dev/input/event8)
[11.182] (**) bcm5974: Applying InputClass evdev touchpad catchall
[
Spoke too soon. I just did a reboot and had no trackpad.
Still looks like lightdm just starts a tiny bit too soon, before some
bits of the hardware are initialized. Its likely a specific set of udev
events needs to be looked for that represents the sum total of input
devices being initialized.
Adding 'and stopped udevtrigger' to the start on conditions seems to
have solved the problem without any sleeps. This might also be the fix
for bug # 969489, which might suggest that the whole thing is related.
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cnd, mind having a look at Clint's problem? Some sort of race condition
loading synaptics.
** Package changed: xorg (Ubuntu) = xserver-xorg-input-synaptics
(Ubuntu)
** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Assignee: (unassigned) = Chase Douglas (chasedouglas)
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New data point.. it failed again even with the udevadm settle... though
its happening far less often now at least.
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Hi Bryce,
This seems to be a udev layer issue, which I have no idea about. I'm
removing my assignment because I don't know what to try, and I don't
have the resources to look into it right now :(.
** Changed in: xserver-xorg-input-synaptics (Ubuntu)
Assignee: Chase Douglas (chasedouglas) =
** Also affects: lightdm (Ubuntu)
Importance: Undecided
Status: New
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Title:
MacBookAir 4,1 trackpad does not work with
More testing has revealed this to be some kind of race condition I
think. I can now fix the problem by switching to tty1 and restarting
lightdm.
Diffing the two log files reveals a massive difference between first-
boot Xorg.0.log and Xorg.0.log.old. I will attach both files. The
interesting
** Attachment added: Xorg.0.log.old
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/936552/+attachment/2806286/+files/Xorg.0.log.old
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** Attachment added: Xorg.0.log
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/936552/+attachment/2806285/+files/Xorg.0.log
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Title:
Well I've at least found a workaround. I added 'udevadm settle' right
before the 'exec lightdm' in /etc/init/lightdm.conf. As long as that is
in place, I do not experience this issue.
So, I think this is an issue with boot speed. My machine has almost
nothing installed beyond the default, and
Update.. so now everything works fine with the synaptics driver, no boot
to 3.2.1 or 3.2.6 required. I suspect this was an xorg problem all
along.
If I remove xserver-xorg-input-synaptics then the trackpad stops working
(and oddly enough, the keyboard becomes really hard to use if X is
running..
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