Public bug reported:
Binary package hint: acpi-support
My Panasonic R4 laptop hotkeys stopped working when upgrading to Ubuntu
7.10 (Gutsy). The problem is that pcc_acpi kernel module does not get
loaded => directory /proc/acpi/pcc does not exist => none of the hotkeys
work.
"Modprobe pcc-acpi" or adding pcc-acpi to /etc/modules fixes the
problem. Now most of the hotkeys work, with a few exceptions:
- screen brightness (Fn+F1/F2): works (OSD not shown)
- external screen on/off (Fn+F3): does not work (screen on/off works from
command line using "i810switch on/off". Acpi_listen reports nothing)
- volume controls and mute (Fn+F4/F5/F6): works (including OSD)
- suspend (Fn+F7): works
- battery indicator? (Fn+F9): does nothing, I don't really know what it is
supposed to do, perhaps show battery status on the OSD? Acpi_listen reports pcc
HKEY 00000080 00000089
- hibernation (FN+F10): hotkey works, waking up from hibernation doesn't but
this is another issue, will report separately
Battery power applet works fine. Screen brightness applet for some
reason does not work (says: Cannot get laptop panel brightness).
I'm not sure which package is responsible for loading the pcc_acpi
module and therefore the right target for the bug. The module is in the
kernel package but e.g. /etc/acpi/panabright.sh is in acpi-support. I
guessed the latter.
Arto
** Affects: acpi-support (Ubuntu)
Importance: Undecided
Status: New
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Panasonic laptop hotkeys broken in Gutsy
https://bugs.launchpad.net/bugs/199483
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