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What is the purpose of the light in the top bezel of the ThinkPad T400?
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What is the purpose of the light in the top bezel of the ThinkPad T400?
I want to know what the purpose of the light in the top bezel is. My theories so far are that it's an early form of keyboard backlight for the dark or it's a light for reading papers in the dark... The light isn't very bright though...
Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
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Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
Huh, interesting, thanks for the info
Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
We actually prefer the ThinkLight !
ThinkLight can illuminate a piece of paper that is beside your computer,
allowing you to work in otherwise compete darkness.
Actually tried to do office work in such situations, and it works!
The illuminated keys cannot do this.
ThinkLight can illuminate a piece of paper that is beside your computer,
allowing you to work in otherwise compete darkness.
Actually tried to do office work in such situations, and it works!
The illuminated keys cannot do this.
Daily Driver: (X1E3) X1 Extreme 3rd Gen | mobile broadband (WWAN)
Current Thinkpads: X1E3 | X1E1 | X1C10 | X1C9 | X1C4 | X1C3 | X230
Retired Thinkpads: X250 | T410 | T42 | 560 (circa 1996)
Current Thinkpads: X1E3 | X1E1 | X1C10 | X1C9 | X1C4 | X1C3 | X230
Retired Thinkpads: X250 | T410 | T42 | 560 (circa 1996)
Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
To be fair, sometimes the light is so dim it barely lights up the kbd.
But otherwise its darn useful... eg. i use it to see small objects in a conferenece room etc.
I'm pretty sure Lenovo is determined to erase this on future models.
As far as I know, only the HP Elite tried to replicate the light on only their 1st gen models coming onto 10yrs ago and they used a physical switch so it looks like the pop up headlights on a 1980s sports car.
But otherwise its darn useful... eg. i use it to see small objects in a conferenece room etc.
I'm pretty sure Lenovo is determined to erase this on future models.
As far as I know, only the HP Elite tried to replicate the light on only their 1st gen models coming onto 10yrs ago and they used a physical switch so it looks like the pop up headlights on a 1980s sports car.
Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
It was sort of ahead of its time; we've got brighter LEDs available now.
I've been saying for years that pretty much anything that has a battery should have an LED light of some sort, given the battery is generally the largest & heaviest part of most lights.
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X31, X40, X61T, X61, X201, X220 (i7 IPS), W520 (FHD), T440p (FHD),
T480 (QHD)
Dells: Latitude C840, Precision M70, Precision M4400, M6400 (WUXGA), M6600, M6700, 7730, XPS 13
Daily driver: MS Surface Pro 7 (i7)
X31, X40, X61T, X61, X201, X220 (i7 IPS), W520 (FHD), T440p (FHD),
T480 (QHD)
Dells: Latitude C840, Precision M70, Precision M4400, M6400 (WUXGA), M6600, M6700, 7730, XPS 13
Daily driver: MS Surface Pro 7 (i7)
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Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
Thinkpad X200 and newer Thinkpads had a revised Thinklight outlet shape that improves the breadth of the light.
Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
It appears to support 256 brightness levels, where 255 isn’t bright enough. How cute# echo 255 > /sys/class/leds/tpacpi\:\:thinklight/brightness
# echo 0 > /sys/class/leds/tpacpi\:\:thinklight/brightness
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Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
Vote for THISw0qj wrote: ↑Thu Jun 14, 2018 1:43 amWe actually prefer the ThinkLight !
ThinkLight can illuminate a piece of paper that is beside your computer,
allowing you to work in otherwise compete darkness.
Actually tried to do office work in such situations, and it works!
The illuminated keys cannot do this.
Re: What is the purpose of the light in the top bezel of the ThinkPad T400?
It's actually an IR/visible light emitter so they can track you from orbit.
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T500 T9600 2055-BE9
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T510 i7 4349-A64
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