[ltp] tpacpi bug in tpacpi::thinklight/brightness for X1 Carbon

Sandro linux-thinkpad@linux-thinkpad.org
Thu, 2 Jan 2014 04:50:03 +0100


--047d7b33cac87c0b3e04eef4b1f8
Content-Type: text/plain; charset=ISO-8859-1

Thanks for looking into this.

>  echo "0x0e" > /proc/acpi/ibm/cmos might be useful.  Other interesting
cmos commands might be 0x0b to 0x0d.

All four (?) commands don't seem to do anything.

> What's in the FN+PGUP key of a X1 carbon?  This is weird, I'd expect it
to be mapped to FN+SPACE (event 0x1014)...

I guess Fn + Space is the PgUp equivalent? The Carbon has three states for
keyboard-backlighting. Off, low-light and bright-light and pressing Fn +
Space cycles between the three.

> Are any of you X1 carbon owners confortable with kernel hacking?

Not me :D I hardly know what you are talking about except for the questions
I answered.
I thought, since we can already turn the lights off, that it would be a
breeze to figure how to turn them on. I underestimated that. :)

Too bad there isn't a "default-on" option in the BIOS (yet).

Met vriendelijke groet,

~Sander

--047d7b33cac87c0b3e04eef4b1f8
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Thanks for looking into this.</div><div><br></div>&gt=
;=A0<span style=3D"color:rgb(0,0,0);font-family:arial,sans-serif;font-size:=
13px">=A0echo &quot;0x0e&quot; &gt; /proc/acpi/ibm/cmos=A0</span><span styl=
e=3D"color:rgb(0,0,0);font-family:arial,sans-serif;font-size:13px">might be=
 useful. =A0Other interesting cmos commands might be 0x0b to 0x0d.</span><d=
iv>

<font color=3D"#000000" face=3D"arial, sans-serif"><br></font><div><font co=
lor=3D"#000000" face=3D"arial, sans-serif">All four (?) commands don&#39;t =
seem to do anything.</font></div><div><font color=3D"#000000" face=3D"arial=
, sans-serif"><br>

</font></div><div><font color=3D"#000000" face=3D"arial, sans-serif">&gt;=
=A0</font><span style=3D"color:rgb(0,0,0);font-family:arial,sans-serif;font=
-size:13px">What&#39;s in the FN+PGUP key of a X1 carbon? =A0This is weird,=
 I&#39;d expect it to=A0</span><span style=3D"color:rgb(0,0,0);font-family:=
arial,sans-serif;font-size:13px">be mapped to FN+SPACE (event 0x1014)...</s=
pan></div>

<div><font color=3D"#000000" face=3D"arial, sans-serif"><br></font></div><d=
iv><font color=3D"#000000" face=3D"arial, sans-serif">I guess Fn + Space is=
 the PgUp equivalent? The Carbon has three states for keyboard-backlighting=
. Off, low-light and bright-light and pressing Fn + Space cycles between th=
e three.</font></div>

<div><font color=3D"#000000" face=3D"arial, sans-serif"><br></font></div><d=
iv><font color=3D"#000000" face=3D"arial, sans-serif">&gt;=A0</font><span s=
tyle=3D"color:rgb(0,0,0);font-family:arial,sans-serif;font-size:13px">Are a=
ny of you X1 carbon owners confortable with kernel hacking?</span></div>

<div><span style=3D"color:rgb(0,0,0);font-family:arial,sans-serif;font-size=
:13px"><br></span></div><div><span style=3D"color:rgb(0,0,0);font-family:ar=
ial,sans-serif;font-size:13px">Not me :D I hardly know what you are talking=
 about except for the questions I answered.</span></div>

<div><font color=3D"#000000" face=3D"arial, sans-serif">I thought, since we=
 can already turn the lights off, that it would be a breeze to figure how t=
o turn them on. I underestimated that. :)</font></div><div><font color=3D"#=
000000" face=3D"arial, sans-serif"><br>

</font></div><div><font color=3D"#000000" face=3D"arial, sans-serif">Too ba=
d there isn&#39;t a &quot;default-on&quot; option in the BIOS (yet).</font>=
</div><div><font color=3D"#000000" face=3D"arial, sans-serif"><br clear=3D"=
all">
</font><div>
<div>Met vriendelijke groet,</div><div><br></div><div>~Sander</div></div>
</div></div></div>

--047d7b33cac87c0b3e04eef4b1f8--