Ok, good!
I close this for now as invalid and make a comment on the help pages to ensure
latest firmware updates are installed. If you or someone else ever has this
issue (again) we'll reopen it and hopefully either you or someone else with
this issue is able to solve it. In my case, the light readings never failed
right from the start - and I use Linux on my MBP almost exclusively.
** Changed in: mactel-support
Status: New => Invalid
--
light sensor is not read ? (Lucid, MacbookPro 6.2)
https://bugs.launchpad.net/bugs/626079
You received this bug notification because you are a member of Mactel
Support, which is the registrant for Mactel Support.
Status in Mactel Support: Invalid
Bug description:
Hello,
I have a macbook pro 6.2 with lucid 64 bits (installed following this:
https://help.ubuntu.com/community/MacBo … ucid#Video) and I try to read the
output of light sensors in order to smartly control the screen and keyboard
light.
1st question: It seems this functionnality did exist on previous ubuntu
versions, right ?
2nd question: I should just have to read the 'light' file which contains the
output of light sensors:
~$ cat /sys/devices/platform/applesmc.768/light
(0,0)
The trouble is this file always contains this (0,0), whatever the ambient light
conditions are..
Nevertheless:
Code:
~$ dmesg|grep apple
[ 4.496393] apple 0003:05AC:0237.0001: input,hidraw0: USB HID v1.11 Keyboard
[Apple Inc. Apple Internal Keyboard / Trackpad] on usb-0000:00:1a.7-1.2/input0
[ 4.499260] apple 0003:05AC:0237.0002: hidraw1: USB HID v1.11 Device [Apple
Inc. Apple Internal Keyboard / Trackpad] on usb-0000:00:1a.7-1.2/input1
[ 4.502979] apple 0003:05AC:8242.0003: hiddev96,hidraw2: USB HID v1.11 Device
[Apple Computer, Inc. IR Receiver] on usb-0000:00:1d.7-1.2/input0
[ 8.198273] applesmc: Apple MacBook Pro 6 detected:
[ 8.198275] applesmc: - Model with accelerometer
[ 8.198277] applesmc: - Model with light sensors and backlight
[ 8.198278] applesmc: - Model with 18 temperature sensors
[ 8.199332] applesmc: device has already been initialized (0xe0, 0xf.
[ 8.199334] applesmc: device successfully initialized.
[ 8.200274] applesmc: 2 fans found.
[ 8.203250] input: applesmc as /devices/platform/applesmc.768/input/input10
[ 8.203395] applesmc: driver successfully loaded.
[ 25.056833] applesmc: light sensor data length set to 10
[ 64.788156] applesmc: wait status failed: 5 != 0
[ 80.741403] applesmc: wait status failed: 4 != 0
[ 144.690224] applesmc: wait status failed: 5 != 1
[ 224.599671] applesmc: wait status failed: 5 != 1
(full output of this command in the attached file)
So it seems the system is recognizing light sensors ?
On the other hand:
Code:
:~$ sensors
applesmc-isa-0300
Adapter: ISA adapter
Left side :2585 RPM (min = 2000 RPM)
Right side :2574 RPM (min = 2000 RPM)
TB0T: +42.5°C
TB1T: +42.5°C
TB2T: +37.2°C
TC0C: +60.0°C
TC0D: +61.5°C
TC0P: +62.0°C
TC1C: +62.0°C
TG0D: +61.0°C
TG0P: +57.0°C
TG0T: +61.5°C
TMCD: +62.0°C
TP0P: +67.5°C
TPCD: +75.0°C
Th1H: +53.8°C
Th2H: +52.8°C
Tm0P: +70.2°C
Ts0P: +35.5°C
Ts0S: +47.2°C
here no light sensors..
I also tried:
Code:
~$ hal-find-by-capability --capability light-sensor --verbose
Found 0 device objects of capability 'light-sensor'
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