Ubuntu
xserver-xorg-input-synaptics package

  1. Bug #399902
  2. Comment #22

Comment 22 for bug 399902

Revision history for this message
Per Wahlström (per-wahlstrom) wrote :

12.04, I think I have a related problem but with a USB mouse.

If you have a script like "20_custom-ehci_hcd" in any of the sleep.d dirs, this may be the culprit here, since it unbinds hcd drivers upon sleep.

"xinput" settings are lost on resume, and a 000-script in sleep.d fails because the device is not seen yet.

To summarize:
Before suspend, 'xinput list' shows my USB mouse and keyboard devices.
On resume, while executing sleep.d scripts, the USB devices is missing from 'xinput list', even after 20_custom-ehci_hcd script has re-bound them.
After resume has completed, 'xinput list' shows the USB devices.

So, X does not rediscover the rebound devices until after the sleep.d scripts have run.