[ltp] Switch off display automatically?

[Tilmann Singer]

Hi

After a few minutes of inactivity (under X) the screen of my A20p will
go blank, but the backlight will still be switched on. How can I
configure it to switch off the backlight automatically? Manually it
works, by pressing Fn+F3.

Is that a good idea anyway? I think that that would not only save
power when running on battery but it would also extend the lifetime of
the backlight, since I heard that the brightness of the light tends to
decrease with heavy usage. Or do you think that frequent switching on
and off would be worse then letting it on for a longer time (like it
is the case with ordinary lightbulbs)?

I'm running X4.0.2 and no screensavers, appended is the output of
tpctl -px

tia, til

----- 

tp:~# tpctl -pmx
power management modes:
   ac power expenditure:                              high
   battery power expenditure:                         manual
   RediSafe global mode overrides non-global mode?:   Y
   RediSafe globally enabled?:                        N
tp:/mnt/big/glibc-stubs# tpctl -px 
power management modes:
   ac power expenditure:                              high
   battery power expenditure:                         manual
   RediSafe global mode overrides non-global mode?:   Y
   RediSafe globally enabled?:                        N
power management resume events:         capability    current
   appointment-r.t.clock-initiated?:    Y             N (00-06-16 00:00:00)
   hardware-initiated?:                 Y             Y
   lid-opening-initiated?:              Y             Y
   serial-RI-initiated?:                Y             N
power management sedative events:       capability    current
                                       (SZRHO)       (SZRHO)
   hardware-or-software-initiated:      SZ-HO         SZ-HO
   power-switch-initiated:              ---HO         ----O
   lid-closure-initiated:               -Z---         -Z---
   Standby-timer-initiated:             -----         -----
   Zuspend-or-hibern.-timer-initiated:  -Z-H-         -Z---
   Hibernate-from-susp.-timer-init'd:   -----         -----
   battery-low-initiated:               -Z-H-         -Z---
   env'mt-exhausted-initiated:          -Z---         -Z---
power management timer modes:           capability    current
   Standby timer:                       N             N
   Zuspend-or-hibernation timer:        Y             N
   Blank-internal-display timer:        Y             Y
   drive power-down timer:              Y             N
power management delay of Hibernate-from-suspend:     0 (i.e., disabled)
power management delays of Zuspend or hibernate:      current
            (specifiable in each power mode)?
   ac power "manual" expenditure mode:  Y             0 (i.e., disabled)
tpctl: SMAPI BIOS error 0x81 ("invalid parameter") -- exiting.


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