I have the same problem on my HP 620 Laptop @ work, and I have a rather simple fix for this :) ! Unplug the power cable and replug the power cable! Sounds stupid I know but it works :P
# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 11.10
Release: 11.10
Codename: oneiric
# uname -a
Linux pc-frank 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:27:26 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
I have the same problem on my HP 620 Laptop @ work, and I have a rather simple fix for this :) ! Unplug the power cable and replug the power cable! Sounds stupid I know but it works :P
# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 11.10
Release: 11.10
Codename: oneiric
# uname -a
Linux pc-frank 3.0.0-13-generic #22-Ubuntu SMP Wed Nov 2 13:27:26 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux