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Acer XB271HU- share your experience and show pics! - Page 363

post #3621 of 7721
Quote:
Originally Posted by nefrusy View Post

Wow, the hot pixel thing is definitely worrisome... I can't believe their QC is actually getting worse!

Interesting that the gamma is correct on the Dec builds. I've been playing with my Oct build for the last two weeks trying to get optimal settings, and I noticed that the screwy gamma gets worse the higher you change that black level setting. The feature is intended to expose more detail in darks for gamers, but it really just washes them out. Anyway, it's as though it still applies a small amount of that feature, even when it's disabled. So it might be something they fixed since the Oct firmware.

If you decide to keep your Oct panel, I can send you the settings and profile I came up with that fix nearly all the problems.

BTW what camera settings did you use for those BLB pics? I want to take similar ones of my panel for comparison.

Also, if you do give up on the XB1, you should probably skip 144Hz IPS altogether for now, since AUO is the only company making them and they are awful at manufacturing anything reliably. I saw that review of 20 PG279Qs, and BLB varied from mediocre to godawful.
Yes the hot pixels are strange. At least they go back to normal after awhile. I don't want to have to use a program to bring them back every time I use the monitor. I simply used my iphone 6s camera on regular settings sitting about 7 feet away from the monitor. It does expose the BLB a bit more but honestly, the photos are fairly close to what I actually see and only a bit exaggerated. Taking a video and then screenshot of the video makes the BLB look much better than it actually is, at least for me.

I am interested in your settings and profile and would love to test it out, thanks! If I decide to give up on it, I plan on skipping 1440p 144hz altogether and will jump to a quality 4K IPS panel. The saving grace re: my Oct 2015 build is that Frys warranty covers single dead or stuck pixels, so I can always use that if the problems get worse.
post #3622 of 7721
Quote:
Originally Posted by jlp0209 View Post

Yes the hot pixels are strange. At least they go back to normal after awhile. I don't want to have to use a program to bring them back every time I use the monitor. I simply used my iphone 6s camera on regular settings sitting about 7 feet away from the monitor. It does expose the BLB a bit more but honestly, the photos are fairly close to what I actually see and only a bit exaggerated. Taking a video and then screenshot of the video makes the BLB look much better than it actually is, at least for me.

I am interested in your settings and profile and would love to test it out, thanks! If I decide to give up on it, I plan on skipping 1440p 144hz altogether and will jump to a quality 4K IPS panel. The saving grace re: my Oct 2015 build is that Frys warranty covers single dead or stuck pixels, so I can always use that if the problems get worse.
I think you are the first to post an issue like this. Personally, I would have returned it asap. There is obviously a significant defect with that panel, it should not be doing this.
post #3623 of 7721
Quote:
Originally Posted by mikesgt View Post

I think you are the first to post an issue like this. Personally, I would have returned it asap. There is obviously a significant defect with that panel, it should not be doing this.
This happened in both of my monitors. I didn't notice it at all for the past 2.5 weeks with my Oct 2015 build. And it is barely noticeable unless you really put your face closer to the screen. I only saw it because I was adjusting brightness to take photos of BLB and then was like, what is this now? Single lit pixels on an all black background. Putting gentle pressure on the screen lights up more pixels. Then I use jscreenfix and poof, most are back to normal. They are much dimmer than the typical stuck pixels I've seen.

I can't believe it is only me. Many others just haven't noticed it / look at the screen as closely as I do. I'm trying my best to just look past all this and enjoy this monitor.
post #3624 of 7721
Guys, I need your help once more. I noticed a yellow glow in the top left corner of the monitor. Is there any chance to get rid of it other than returning it to amazon?
post #3625 of 7721
Update: I never got around to posting this, but Acer sent me a new monitor neck and stand within 3 days after I contacted them about the cracked neck I received when I bought the monitor new last month. I told them all I needed was the neck but they still sent the entire assembly. They over packed it too. Customer service was good to me. Just wanted to share. A lot of bad stories on this thread about Acer. Guess I'm just lucky.
post #3626 of 7721
Quote:
Originally Posted by jlp0209 View Post

This happened in both of my monitors. I didn't notice it at all for the past 2.5 weeks with my Oct 2015 build. And it is barely noticeable unless you really put your face closer to the screen. I only saw it because I was adjusting brightness to take photos of BLB and then was like, what is this now? Single lit pixels on an all black background. Putting gentle pressure on the screen lights up more pixels. Then I use jscreenfix and poof, most are back to normal. They are much dimmer than the typical stuck pixels I've seen.

I can't believe it is only me. Many others just haven't noticed it / look at the screen as closely as I do. I'm trying my best to just look past all this and enjoy this monitor.

Oh, I thought you meant you only saw the hot pixels on the Dec build... great, now I'm scared to look for them on mine... (probably won't, because I'm past the return date haha).

I wonder if your BLB pattern will continue changing, but hopefully for the better? I think you mentioned that it started with very little, but developed a lot within 24 hours. Has it seemed to improve any since that point? Maybe I just lucked out, but I had some minor BLB to start (mostly covered by IPS glow anyway), but 1.5 months later it's practically non-existent.

I'm at work right now so I don't have access to my calibration stuff... but I'm currently running the panel at RGB 99-94-100 and 25 brightness. For my particular panel, I observed the white point for the warm setting (i.e. 100-100-100) to be about 6350K on average, with some minor yellow-green tint. (BTW, it takes at least 2 hours for the monitor to fully warm up... it starts at 6200K and gradually stabilizes at 6350K) Out of curiosity, where does yours fall before calibration? If you use the sRGB Color Space Profile in Windows Color Management, you can use DisplayCAL to generate a report for your uncalibrated settings by selecting "Current" in the dropdown. I'll post my results later tonight for comparison... the best testchart to use for testing display settings is the grayscale one, has like 53 shades of gray and gives a good chart of gamma and color temp. You should be able to see what effect your settings have, and how they differ from 0-100% white. In my case, gamma is around 1.9 to start, but corrects itself to 2.2 around 15% white. Also, you may notice RGB settings get an accurate 6500K for 100% white, but are off for 20-80% for example. I spent a ton of time with different settings to find the optimal ones because of that.
post #3627 of 7721
Quote:
Originally Posted by nefrusy View Post

Oh, I thought you meant you only saw the hot pixels on the Dec build... great, now I'm scared to look for them on mine... (probably won't, because I'm past the return date haha).

I wonder if your BLB pattern will continue changing, but hopefully for the better? I think you mentioned that it started with very little, but developed a lot within 24 hours. Has it seemed to improve any since that point? Maybe I just lucked out, but I had some minor BLB to start (mostly covered by IPS glow anyway), but 1.5 months later it's practically non-existent.

I'm at work right now so I don't have access to my calibration stuff... but I'm currently running the panel at RGB 99-94-100 and 25 brightness. For my particular panel, I observed the white point for the warm setting (i.e. 100-100-100) to be about 6350K on average, with some minor yellow-green tint. (BTW, it takes at least 2 hours for the monitor to fully warm up... it starts at 6200K and gradually stabilizes at 6350K) Out of curiosity, where does yours fall before calibration? If you use the sRGB Color Space Profile in Windows Color Management, you can use DisplayCAL to generate a report for your uncalibrated settings by selecting "Current" in the dropdown. I'll post my results later tonight for comparison... the best testchart to use for testing display settings is the grayscale one, has like 53 shades of gray and gives a good chart of gamma and color temp. You should be able to see what effect your settings have, and how they differ from 0-100% white. In my case, gamma is around 1.9 to start, but corrects itself to 2.2 around 15% white. Also, you may notice RGB settings get an accurate 6500K for 100% white, but are off for 20-80% for example. I spent a ton of time with different settings to find the optimal ones because of that.
You'll never see them if you aren't looking for them, but curious if anyone else ends up noticing it.

Yes my BLB did exist when I first got the monitor and it has increased a decent amount since then. If I keep it I am definitely buying the Frys replacement plan just in case it keeps getting worse. I would exchange, but it is the best one I've gotten so far and don't believe I'll ever get one with fewer flaws. It is either being kept or flat out returned for refund.

I didn't measure white point before calibration, I will have to try it over the next day or so. I do remember that out of the box gamma was very light (closer to 1.8 than 2.2). Thanks!
post #3628 of 7721
- What si the standard warranty for Acer monitors ?
2 years for XB series ?

What is the ACER Dead Pixel Policy ?

I am afraid when i read this link ISO 13406-2 Guidelines for LCD Pixel Defects
and this link Zero Bright Dots guaranteed
ZBD“ feature Monitors only, Zero Bright Dots guaranteed for 3 months after purchase
It means you won t be able to ask for an exchange until you have 16 dead pixels mad.gif
Quote:
2.1.5 minor defects of LCD displays occurring in Systems equipped with LCD display technology, provided that
there shall not be more than four (4) defective pixels per million pixels on a given LCD display, and provided
further that, if the display panel is divided into nine (9) equal rectangular areas, there shall be no more than one
defective pixel in the central area of the display.

Edited by ToKuten - 2/12/16 at 3:37am
post #3629 of 7721
Just got my XB271HU, so far very acceptable levels of BLB and no dead pixels, dust or oil stains. How's the uniformity looking though? To my untrained eye it seems pretty bad but I might just be imagining things. Worth gambling with returns for?

post #3630 of 7721
Unless you like staring at white backgrounds all day, I would say check games movies and other nice bright colored videos and then make your opinion about uniformity.
If you are a gambler then go ahead and return what looks like a perfectly good monitor.
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