* Joey Lee -- Friday 06 May 2011:
於 五，2011-05-06 於 10:52 +0200，Melchior FRANZ 提到：
... and changing backlight brightness worked with acpi_osi=Linux, too. Unfortunately, that does no longer work now, although I haven't changed anything. Pressing the brightness buttons causes some ACPI debug output, but it doesn't adjust anything.
hmm........ Takashi's patch works before, but doesn't work now?
Argh ... sorry Takashi. Joey is right. I thought I had tested that, but apparently not. Indeed, your last patch prevents the backlight from being turned off, but it also breaks the brightness adjustment keys at runtime with acpi_osi=Linux. And without that it doesn't work, anyway, just like before. I'll add some more debug messages ...
Does that because my new patch for bko#34142 ? Could you please add acer-wmi to /etc/modprobe.d/blacklist then reboot machine ?
Done. No, your patch is not involved. But backing out Takashi's patch and re-applying confirmed that it's that patch.
m.