So I managed to get the maximum brightness and then dimmed it. On trying to increase the brightness once more the event 20496 is registered.
the output is below event: 4112 BR_UP thinkpad_cmos: rc = 0 event: 4112 BR_UP thinkpad_cmos: rc = 0 event: 4112 BR_UP thinkpad_cmos: rc = 0 event: 4112 BR_UP thinkpad_cmos: rc = 0 event: 4112 BR_UP thinkpad_cmos: rc = 0 event: 4112 BR_UP thinkpad_cmos: rc = 0 event: 4112 BR_UP thinkpad_cmos: rc = 0 event: 4112 BR_UP thinkpad_cmos: rc = 0 event: 4113 BR_DOWN thinkpad_cmos: rc = 0 event: 4113 BR_DOWN thinkpad_cmos: rc = 0 event: 4113 BR_DOWN thinkpad_cmos: rc = 0 event: 4113 BR_DOWN thinkpad_cmos: rc = 0 event: 4113 BR_DOWN thinkpad_cmos: rc = 0 event: 4113 BR_DOWN thinkpad_cmos: rc = 0 event: 4113 BR_DOWN thinkpad_cmos: rc = 0 event: 4113 BR_DOWN thinkpad_cmos: rc = 0 event: 20496 event: 20496 event: 20496 event: 20496 event: 20496 Kind regards On Wed, Sep 12, 2012 at 11:55 AM, Paul Irofti <[email protected]> wrote: > On Mon, Sep 10, 2012 at 03:30:38PM +0200, [email protected] wrote: >> >Synopsis: LCD brigtness on Thinkpad T61 can not be adjusted without >> >rebooting >> >Category: Thinkpad t61 hotkey >> >Environment: >> System : OpenBSD 5.2 >> Details : OpenBSD 5.2-current (GENERIC.MP) #8: Tue Aug 28 12:25:19 >> MDT 2012 >> >> [email protected]:/usr/src/sys/arch/amd64/compile/GENERIC.MP >> >> Architecture: OpenBSD.amd64 >> Machine : amd64 >> >Description: >> If I decrease my LCD brightness I can not increase it again without >> restarting my laptop >> and the other way round is the same. >> >How-To-Repeat: >> Switch on laptop adjust brightness with (FN+Pos1) or (FN+Ende) >> >Fix: >> Restart Laptop and adjust brightness either increasing or decreasing. > > Can you send me the output from pressing the brightness buttons after > applying this diff? > > Index: acpithinkpad.c > =================================================================== > RCS file: /cvs/src/sys/dev/acpi/acpithinkpad.c,v > retrieving revision 1.28 > diff -u -p -r1.28 acpithinkpad.c > --- acpithinkpad.c 6 Jun 2011 06:13:46 -0000 1.28 > +++ acpithinkpad.c 12 Sep 2012 09:54:04 -0000 > @@ -279,12 +279,15 @@ thinkpad_hotkey(struct aml_node *node, i > if (event == 0) > break; > > + printf("event: %d\n", event); > switch (event) { > case THINKPAD_BUTTON_BRIGHTNESS_UP: > + printf("BR_UP\n"); > thinkpad_brightness_up(sc); > handled = 1; > break; > case THINKPAD_BUTTON_BRIGHTNESS_DOWN: > + printf("BR_DOWN\n"); > thinkpad_brightness_down(sc); > handled = 1; > break; > @@ -412,12 +415,14 @@ thinkpad_toggle_wan(struct acpithinkpad_ > int > thinkpad_cmos(struct acpithinkpad_softc *sc, uint8_t cmd) > { > + int rc; > struct aml_value arg; > > bzero(&arg, sizeof(arg)); > arg.type = AML_OBJTYPE_INTEGER; > arg.v_integer = cmd; > - aml_evalname(sc->sc_acpi, sc->sc_devnode, "\\UCMS", 1, &arg, NULL); > + rc = aml_evalname(sc->sc_acpi, sc->sc_devnode, "\\UCMS", 1, &arg, > NULL); > + printf("thinkpad_cmos: rc = %d\n", rc); > return (0); > }
