32
votes
Accepted
How do I know the dpi of my laptop screen
1366 x 768 pixels is 1567 pixels diagonally (Pythagorean theorem, √(13662+7682)=1567; and you thought you would never use that).
If the screen measures 15.6" diagonally, 1567 pixels / 15.6" is ...
- 27.2k
21
votes
Laptop dimming display on dark backgrounds
An obscure forum post pointed me in the right direction:
Search Windows for 'Intel'
Select 'Intel HD Graphics Control Panel'
Click the 'Power' square button
Click 'On Battery' tab
...
- 4,116
19
votes
Accepted
How should I clean these faint yellow spots on my display?
I hate to be the bearer of bad news but unfortunately those spots are likely permanent.
Alcohol of any kind will damage the protective and/or anti-glare layers on the front of computer monitors. The ...
- 1,252
11
votes
Accepted
Do blue light filters actually reduce blue light?
During 2018 update I made the answer a bit wider than the question asked. Hopefully it helps to someone.
Software tools like Redshift or f.lux adjust display color profiles towards red shades, so ...
- 13.2k
8
votes
How do I know the dpi of my laptop screen
Assuming you are using Windows 7:
Go to Control Panel > Appearance and Personalization > Display
In the left(blue) column, click Set custom text size(DPI)
A window titled Custom DPI Scaling will pop ...
- 309
6
votes
Do blue light filters actually reduce blue light?
Briefly: If the overall perceived brightness is the same or lower, and the screen looks less blue to you, then yes, the program reduced the amount of blue light coming off of the screen.
So, all ...
- 23.3k
4
votes
How do I know the dpi of my laptop screen
Try yourself: DPI Calculator
Formula:
PPI = √(pixels_horizontal^2 + pixels_vertical^2) / inches_diagonal
PPI = √(13662 + 7682) / 15.6 = 100.45
Therefore, 100.45 dpi
- 277
4
votes
Accepted
Does Thunderbolt 3 itself support 4K@60Hz output?
One can almost say that there is no such thing as "Thunderbolt 3 over USB-C", because Thunderbolt simply changed the physical connector it uses from mini DisplayPort to USB-C since version 3.
So the ...
- 9,528
3
votes
How can I turn off the autodim feature on my Linux laptop so it actually stays off?
The answer will differ depending on what desktop environment you're using. Since you're on Linux Mint, I figured that it's pretty likely you're in a Desktop Environment that uses gsettings (like Gnome ...
3
votes
Accepted
Bright Spots on Dell E6410 screen
What are the bright spots?
It looks like you've probably identified the problem correctly. In fact, the link to pictures in your comment included pictures from several of the sites I found looking ...
- 27.2k
3
votes
Laptop dimming display on dark backgrounds
Such annoying feature in Philips BDM4065 monitor was caused by its "SmartContrast" setting turned on. Turning it off resolved the problem completely.
(This is not an advice for built-in laptop ...
- 131
3
votes
Laptop dimming display on dark backgrounds
For anyone who doesn't have the Power Saving Technology option in Intel Graphics Control Panel (I only had a Panel Self-Refresh Enable/Disable option) follow the instructions in the first answer, from ...
- 171
3
votes
How do I know the dpi of my laptop screen
as of DPI Calculator
Display size: 13.6" × 7.65" = 103.96in² (34.54cm × 19.42cm = 670.72cm²)
DPI = PPI = 100.45
0.2529mm dot pitch, 10091 PPI²
- 171
3
votes
What is the difference between these display screens?
1) BrighView HD LED-Backlit display is a glossy screen. It has advantages such as clearer images, wide viewing angles, high contrast, vivid colors and reduced eye fatigue.
2) HD TN GL(Slim) is TN ...
- 31
2
votes
How do you find out a laptop screen panel manufacturer / model with Linux? (Samsung, LG, Chi Mei, etc)
This basically just wraps up Alexander Torstlings answer which worked for me. It is basically just a loop that gets info from all detected devices (and errors from the ones that cannot be probed). It ...
- 21
2
votes
2 displays detected on ThinkPad T400
Had trouble with the Lenovo T400 I just received and the only way to get the icons to display on the desktop was to Set the Config>Display settings in the BIOS to Discrete Graphics and set the OS ...
- 21
2
votes
Flickering laptop screen when hot - cause?
For the readers in the future. About 5 years ago (2015) I had the same problem with my 5 years old n5110 core i7 with a powerful gpu both on the same heatsink.
It is absolutely your thermal grease or ...
2
votes
Lenovo IdeaPad Flex 14 leaking clear sticky gel from lower right corner of display
This sounds like something like liquid optically clear adhesive leaking from the display, perhaps due to high temperature. If this is the case, the display glass can loosen and eventually fall off.
A ...
- 45.9k
2
votes
Sony Vaio Duo 11 SVD1121X9EB liquid in lcd screen
my Vaio Duo 11 have the same issue. The problem is that the LCD screen is glued to the touch, you see the screen unglued and probably you have bubbles also, if not now in a soon time you have this ...
2
votes
Difference between 16:9 and 16:10 aspect ratio based on laptop's display size
Using an
online trigonometric calculator,
I get these values for a triangle:
Hypotenuse of 15.6, right angle with 16:9 ratio : height is 7.65 inch
Hypotenuse of 13, right angle with 16:10 ratio : ...
- 464k
1
vote
Accepted
Why does VNC work when my laptop has no picture on the internal or external display?
It's a hardware fault, for sure, likely caused by accumulated physical trauma. The display adapter has multiple logical components, and the last one which touches the signal is the circuit which ...
- 9,552
1
vote
Laptop - Display parts turning yellow intermittently
Judging by the intermittent nature of it that looks like one of three potential problems.
a loose cable between your main board and the display,
the display itself (or it's inbuilt controller) has ...
- 90.6k
1
vote
Dell XPS 9550 screen flickers every minute or so
This is actually a known bios bug with the Xps 9550. Dell is constantly is saying a fix is in the works but that was a while ago, Untill today still no fix. The only fix for this is to downgrade your ...
- 788
1
vote
My computer turned itself into Tablet Mode and it won't come out despite settings
I had a laptop get confused in the same way a couple of weeks ago.
(Also after editing a photo.)
I had to ENABLE tablet mode in Action center first.
Then did a full shutdown.
Started back up and now ...
- 30.3k
1
vote
Repairing a Dell XPS 13 (9333) loose display hinge
Dell XPS 13 (9333) display hinge is loose
I already tried tightening the hinges but that didn't do anything. Has
anyone else had this error, and if you fixed it, how did you fix it?
For the ...
1
vote
Do blue light filters actually reduce blue light?
As an alternative:
You might consider E-INK readers (like KINDLE, Dasung...).
You need anti-glare glasses.
I recommend to read: How to use monitors to avoid eye-strain.
- 3,844
1
vote
Laptop dimming display on dark backgrounds
This was by far the most annoying feature in my laptop.
I also managed to disabled it from Intel Graphics Control Panel, however, I had to disable both "Display Power Saving Technology" and "Extended ...
- 11
1
vote
operating system does not show max supported resolution
If you use you laptop with a second monitor/docking station which only supports 1366x768 and is set as the primary monitor, this will most likely cause your problem.
If not, you might try to define ...
- 11
1
vote
Switch between the display of multiple monitors
MultiMonitorTool has a scaled LivePreview and you can also move windows between the different screens.
- 36
1
vote
Screen locks even when plugged in
Apparently it is happening because of a "screen saver" setting:
This is located in the "Personalize" part of the system options.
If you are on a domain, then network policies can be used to force ...
- 6,071
Only top scored, non community-wiki answers of a minimum length are eligible