[ltp] T61 hotkey_mask changed after resuming from suspend to ram

Henrique de Moraes Holschuh linux-thinkpad@linux-thinkpad.org
Mon, 23 Jul 2012 20:25:12 -0300

On Mon, 23 Jul 2012, Jens Rutschmann wrote:
> This is a vanilla 3.4.4, firmware is:


> At least dmesg contains 'thinkpad_acpi: ACPI backlight control delay
> disabled' when resuming, so I think 'hotkey_resume()' is called as
> it in turn calls 'tpacpi_disable_brightness_delay()' which prints
> that line.

When did it stop working?

> I also grepped through /etc and /lib/udev to check if something
> changes the hotkey_mask but couldn't find anything besides my
> local.start script that sets it to the recommended value. Should I
> check other paths as well ?

modprobe thinkpad-acpi debug=0xffff will tell you if anything messes with
sysfs or procfs and changes the mask.

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh