Changing GNOME Default Action for Low Battery

The GNOME default of ‘hibernate’ or suspend-to-disk on very low battery power isn’t optimal for many laptops — hibernate is known to be broken on several hardware setups, it frequently results in file system corruption, and just causes pain.  That, combined with the weird behaviour of the GNOME power manager to put the system in hibernate, even when the battery isn’t low, annoyed me enough to go hunting for a way to change the default.

The GUI doesn’t expose a ‘sleep’ setting; it just offers hibernate and shutdown, so here’s a tip to just put the system to sleep state (suspend to RAM), which is a much well-behaved default for me.

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Workaround for error after upgrading VM from F16 to F17

Updating a Fedora 16 guest to a Fedora 17 guest via preupgrade gave me the ‘Oh no, something has gone wrong!’ screen at the GDM login screen.  It’s quite frustrating to see that screen because you can’t switch to a virtual terminal for troubleshooting, or even reboot or shutdown.

To send the key sequence Ctrl+Alt+F2 to the guest to switch to a virtual terminal, use the qemu monitor by pressing


and use sendkey to send the key sequence:

(qemu) sendkey ctrl-alt-f2

Then go back to the guest window by issuing


After logging in as root, I poked in the gdm log files in /var/log/gdm/ and saw the fprint daemon was causing some errors.  Removing the fprintd package fixed this, but this is just a workaround, not a solution:

yum remove fprintd

Bug filed.