Ubuntu
pm-utils package

  1. Bug #492649
  2. Comment #29

Comment 29 for bug 492649

Revision history for this message
Andy Buckley (andy-insectnation) wrote : Re: Laptop automatically suspends right after resume

I have the same problem on a new Thinkpad T40 laptop -- sometimes on unsuspend, I get to see the cursor for a second or so, and then it vanishes and the laptop goes back to sleep. It's not easy to reproduce -- the first time I managed to reproduce it while acpi_listen was running was today after a week of occasional trying -- but it does occur quite regularly. Relevant features:

 * Suspend was with a power cable plugged in and batteries fully charged; unsuspend was on battery power 45 mins later.
 * The wireless network changed between the suspend and unsuspend locations: on the second (successful) resume attempt, I got a dialog saying that the authentication credentials had been forgotten for the new wireless network (which I've used many times before)
 * This laptop has two batteries, which I've noticed has confused Ubuntu before (I get "critically low battery" warnings when battery #1 is near empty, even though battery #2 is full)

I think this may be related to bug #31935, but was urged to submit a new report rather than reopen that one... this one seems to be such a new bug on the same issue. I'll attach an acpi_listen log from this double-unsuspend in a moment.