Public bug reported:
Binary package hint: acpi-support
Two updates to acpi-support were accepted and installed, recently.
After the first, acpi-support_0.114-0intrepid1_i386.deb - the lid event
is finally recognized on my HP 6140 Business Laptop, BUT only about 3 or
4 minutes AFTER the first lid event occurs, THEN it behaves normally
until a reboot, when the first event delay is repeated.
If the first event is opening the lid (i.e., it was powered-on with the
lid closed, and allowed to boot that way) then all seems normal IF the
first (other) lid event is after the necessary delay.
After the second update, acpi-support_0.114-0intrepid2_i386.deb - The
above noted problem persists and I also noticed instability with the
screen backlight on battery power, but that may be the first time since
either update that I used the battery. The screen soon became too dark,
and wouldn't allow me to adjust the brightness, either by normal
activity or by using the brightness controls. I tried System ->
Preferences -> Power Management [On Battery Power] and disabled both
Reduce backlight brightness and Dim display when idle. It seemed to
require disabling BOTH before I could keep the display bright. Without
that, the brightness seemed to change erratically and without reference
to any kind of activity, including the use of the brightness controls.
** Affects: acpi-support (Ubuntu)
Importance: Undecided
Status: New
** Tags: acpi backlight lid
** Tags added: acpi backlight lid
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acpi-support lid event delay and unstable backlight
https://bugs.launchpad.net/bugs/322615
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