'lshal -m' doesn't output anything, even with sudo. I tried "lshal --monitor" and it works:
First, I started the monitor, I closed the lid, counted to ten, then I opened it. (Incidentally, gnome-screensaver refuses to unlock the screen, but this is unrelated, I think, because they often happen separately.) $ sudo lshal --monitor Start monitoring devicelist: ------------------------------------------------- acpi_LID property button.state.value = true acpi_LID condition ButtonPressed = lid acpi_BAT0 property battery.voltage.current = 12421 (0x3085) acpi_LID property button.state.value = false acpi_LID condition ButtonPressed = lid acpi_BAT0 property battery.voltage.current = 12420 (0x3084) ******************* Then I restarted 'ls-hal --monitor', I closed the lid and re-opened it immediately; it remained blank. I counted to ten and then again closed and opened it immediately. The second time it turned on. $ sudo lshal --monitor Start monitoring devicelist: ------------------------------------------------- acpi_LID condition ButtonPressed = lid acpi_LID condition ButtonPressed = lid acpi_LID property button.state.value = true acpi_LID condition ButtonPressed = lid acpi_BAT0 property battery.voltage.current = 12419 (0x3083) acpi_LID property button.state.value = false acpi_LID condition ButtonPressed = lid acpi_BAT0 property battery.voltage.current = 12420 (0x3084) -- monitor remains blank after quick close/open lid cycle https://launchpad.net/bugs/82463 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs