I believe I have found a workaround for my problem, and I'm hoping that
not only will this help other people work around it also, but it may
help developers track down the bug. What I did was enable the grub2
bootup menu that is hidden by default. Apparently Ubuntu 9.10 uses a
new bootloader called grub2 (instead of the older grub). Instructions
for those who want to try this also:
1. Open a command prompt by clicking Applications, then Accessories, then
Terminal.
2. Type in the following command:
sudo gedit /etc/default/grub
3. When the editor opens up, find the line that looks like this:
GRUB_HIDDEN_TIMEOUT=0
and put a '#' at the front, to make it look like this:
#GRUB_HIDDEN_TIMEOUT=0
4. Click the "Save" button to save the file, then close the editor.
5. Back in the Terminal window, enter the following command:
sudo update-grub
6. Shut down Ubuntu and restart it. This time instead of instantly going to
the login screen, you will see a startup menu. You can either press Enter to
boot up instantly, or you can wait 10 seconds and it will do it by itself.
After doing this, I have been able to reboot, log in, and shut down
again 10 times in a row without a single instance of the bug. When I
took the '#' back out of /etc/default/grub and re-ran update-grub, the
very first time I rebooted the bug came back (it logged me back out as
soon as I logged in). Fortunately, I was able to get back in after a
couple more tries and fix it back. This definitely hides the bug... no
idea why, but it works for me.
--
logout without warning shortly after login
https://bugs.launchpad.net/bugs/407488
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