So I tried your 2nd tip -- adding "pfix=vesa,ram" to the boot parameters (described here; note: the boot parameters in the LHP Grub entry already had "nomodeset"). The system booted up, and in the Lighthouse Video Wizard, I choose option #1 (Auto configuration). Not sure if that was the difference, but I was able to log out to the command line!
At the command line, I was able to reboot my computer. As part of the shutdown process, I saved the session in a new file, different from the one I had originally set up. So when LHP rebooted and located session files, it now presents three choices:
- 0 none
1 sda5 /lhp/LHPsave.3fs
2 sda5 /lhp/LHPsave-logout_works.3fs
When I reboot and select choice #1, LHP boots up, but logging out still results in a blank screen. Since the two session files are used with the same Grub entry, I assume that they must differ in some configuration settings. Is there a way to determine this difference? I'd like to know what causes the different Log Out behaviors.