M6600 Owners Thread

[DallasGeezer]

That's really odd. Both of my replacements were factory new and they both had LG panels. Yes, I have a touchscreen. In both cases I swapped the AUO for the panel in the replacement. Either way, glad you finally got an AUO.

Maybe a deal where that moment in time the production line had all AUO touch screens. Anyway, the CSR was unable to specify the AUO panel , unless he went with a touch screen. It's interesting how the order choices for the M6600 can change very fast. The last time I looked online, you automatically got vpro, and yet our brand new M6600 does not have it.

So, you were able to remove the digitizer panel from the screen? or did you replace the panel as a unit, digitizer with it? .

[Illustrator76]

AU Optronics B173HW01 v4 is probably the best you can get w/o going IPS. Make sure it's a v4 as each version is significantly different. This particular panel displays 90% of the NTSC color gamut. I can't comment on compatibility first hand but I am 100% confident it will work w/o issues.

Edit: Here are the specs.

Thanks, now I just need to see if I can find one of these available somewhere in the U.S. I doubt it, but I am going to give it a try.

[Scott_RC-TEK]

AU Optronics B173HW01 v4 is probably the best you can get w/o going IPS. Make sure it's a v4 as each version is significantly different. This particular panel displays 90% of the NTSC color gamut. I can't comment on compatibility first hand but I am 100% confident it will work w/o issues.

Edit: Here are the specs.

+1 if going glossy...

[DallasGeezer]

Pulse Width Modulation, which in the end is controlled by the panel's onboard controller logic; not the main system board.

Scott

OK, your typo threw me, I was thinking I had something else to learn. I can't handle that right now..

So, what do you think is causing the LG flickering on the M6600? Something on this list?:

8. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.
9. If Jitter of PWM is bigger than maximum. It may cause flickering.
10. This Spec. is not effective at 100% dimming ratio as an exception because it has DC level equivalent
to 0Hz. In spite of acceptable range as defined, the PWM Frequency should be fixed and stable for
more consistent brightness control at any specific level desired.
11. The life time is determined as the time at which the typical brightness of LCD is 50% compare to that of
initial value at the typical LED current. These LED backlight has 6 strings on it and the typical current
of LED’s string is base on 22mA.

[Illustrator76]

Thanks Scott,

Your opinion on these boards seems very respected, so I have a question for you. Did you notice a big enough difference between the glossy and matte screens that you think would warrant purchasing the glossy and switching? I have switched screens before, so the actual physically switching part is not an issue for me.

[Scott_RC-TEK]

Sorry about that.
PWM is the proper reference, but some may go with PMW, which means the same thing.

Lower DC levels and timing leaves room for line noise and excessive device draining/leakage. In other words, garbage in/gargbage out. I think the LG needs a firmware tweak to better handle the LED backlight timing and/or some better capacitance on the voltage lines that will reduce/remove the flicker on each LED backlight lane. 0.1uf SMT caps next to each LED may help clean things up.

Or just tell Dell to get you a screen that will make you happy without taking a soldering iron it.

Scott

OK, your typo threw me, I was thinking I had something else to learn. I can't handle that right now..

So, what do you think is causing the LG flickering on the M6600? Something on this list?:

8. The operation of LED Driver below minimum dimming ratio may cause flickering or reliability issue.
9. If Jitter of PWM is bigger than maximum. It may cause flickering.
10. This Spec. is not effective at 100% dimming ratio as an exception because it has DC level equivalent
to 0Hz. In spite of acceptable range as defined, the PWM Frequency should be fixed and stable for
more consistent brightness control at any specific level desired.
11. The life time is determined as the time at which the typical brightness of LCD is 50% compare to that of
initial value at the typical LED current. These LED backlight has 6 strings on it and the typical current
of LED’s string is base on 22mA.

Thanks Scott,

Your opinion on these boards seems very respected, so I have a question for you. Did you notice a big enough difference between the glossy and matte screens that you think would warrant purchasing the glossy and switching? I have switched screens before, so the actual physically switching part is not an issue for me.

If I only used my M6600 indoors, I would change it over to the v4 glossy. Since I do take it with me to some business meetings with funky light, I live with the very nice v5 matte. I hope this kinda answers your question.

Thanks for the kind words.

Scott

[marcin321]

I agree...nothing is perfect, including the M6600, but we need to look at documented facts and not conjecture -

Fact: The AUO V5 is matte and has the same industry standard AG coating specs as many other panels. It should be noted that excessive AG coating to remove all [indoor] reflections would only degrade the overall image quality; making potential reflections moot. Reference the CMO panel as an example.

Fact: For photo and video production, a glossy display indoors with reduced room lighting will always produce the best image results.

Fact: There are no PWM issues that need to be addressed on the M6600 system board side in relation to the AUO and/or other panels.

Scott-

Fact: AOU V5 is Anti-Glare (I looked in the specs), not matt. With matt you don't have any reflections from any angle, V5 looks even from small angles like glossy.

Fact: there are some PWM issues here. This is the only one explanation for fact, that you can make photo and on this photo you can see strips on white color (I attach one resized according to this forum limits, I can send much more on priv ). The same you can make video and you will see that there stips are moving (slower or faster - it depends on the brightness level). Similar effect is not visible in other systems and it's not visible with 100% brightness level. I'm not sure in 100% in this moment only one thing - whether problem is on panel or motherboard side, but I think, that rather on MB - it's suggested by info from BIOS v4 and fact, that the same was with CMO.

Fact: I have tried to discuss PWM with Dell first, but I haven't received concrete info up to now.

Maybe I overreacted a bit, but I think you completely missed the point. These are your opinions and not facts. These opinions can vary greatly from one person to another.

I'm not less susceptible, I only use my laptop indoors and I position it to avoid glare. I prefer the glossy screen and it suits my use of the M6600. If you really want a matte LCD panel then source one and swap it. It takes maybe 15 minutes if you know what you are doing, 30 if you take your time.

As for the PWM issue, I can't reproduce your results. Please note, this wasn't a test based on eyesight. I tested with a Canon HF100 camcorder using the exact same method in the video you linked. Additionally, I have not seen one other person complain about this same issue. All the flickering issues refer to a different issue with the LG panels. This implies that either there is an issue with your specific laptop or you have a general issue with eye fatigue. If this was a general issue with this laptop your would see a plethora of complaints flooding this very forum.

Sure, these would be good options to introduce when a refresh rolls around, but it shouldn't and doesn't take away from the M6600 as a whole.

1. opinions are confirmed by facts (like pictures or videos) and I don't have more professional hardware right now for better confirming it. Your Canon can work on different frequency, but lack of proof from it doesn't make problem nonexistent.

2. I could replace LCD in situation, when it will not break warranty and when I will know, that panel model X work with M6600 (I don't have lab for checking all possibilities).

3. majority of people don't expect too much from their hardware. I agree, that M6600 has got various strong points, but it doesn't change fact, that some problems related to screens are visible here. And my past experiences with various products say - such problems are eliminated only, when users are speaking about them....

[Scott_RC-TEK]

Fact: AOU V5 is Anti-Glare (I looked in the specs), not matt. With matt you don't have any reflections from any angle, V5 looks even from small angles like glossy.

Fact: there are some PWM issues here. This is the only one explanation for fact, that you can make photo and on this photo you can see strips on white color (I attach one resized according to this forum limits, I can send much more on priv ). The same you can make video and you will see that there stips are moving (slower or faster - it depends on the brightness level). Similar effect is not visible in other systems and it's not visible with 100% brightness level. I'm not sure in 100% in this moment only one thing - whether problem is on panel or motherboard side, but I think, that rather on MB - it's suggested by info from BIOS v4 and fact, that the same was with CMO.

Fact: I have tried to discuss PWM with Dell first, but I haven't received concrete info up to now.

It has become apparent you are confusing LCD layer finishes with aftermarket display protectors [aka- privacy protectors]. At any rate, "Anti-Glare" and "Matte" display panels [screens] are considered one in the same by all the major manufacturers. If you feel I am wrong, then you must feel the established industry definitions are wrong (ref: Wikipedia, HP, Sansung, IBM/Lenovo, Dell, Apple, etc etc etc etc).

I have already stated my opinion in regards to the PWM so I will leave that alone.

In the end, we can agree to disagree, but we must be on the same page and compare apples to apples.

Scott-

[marcin321]

It has become apparent you are confusing LCD layer finishes with aftermarket display protectors [aka- privacy protectors]. At any rate, "Anti-Glare" and "Matte" display panels [screens] are considered one in the same by all the major manufacturers. If you feel I am wrong, then you must feel the established industry definitions are wrong (ref: Wikipedia, HP, Sansung, IBM/Lenovo, Dell, Apple, etc etc etc etc).

I have already stated my opinion in regards to the PWM so I will leave that alone.

In the end, we can agree to disagree, but we must be on the same page and compare apples to apples.

Scott-

1. hmmmm, yes, the problem is, that LCD/computer manufacturers aren't precise here, often they treat different levels of matt/different surfaces the same (sometimes with some series you have/buy randomly selected panel and it's lottery, what you will get) and there are many misunderstadings there.

Why ?

Because it's easier from marketing point of view to say, that there is glare and "other" surface (or better from economic perspective to sell "different matt level/surface" LCDs as "full" matt)

I don't know, if there is any numeric industry norm here, but I haven't seen it anywhere (maybe it's available somewhere).

We could use for example pictures from this page: http://www.screentekinc.com/pixelbright-lcds.shtml (and treat AG as matt)

...but still the problem is in defining, how many reflections are removed. Example: in old used by me laptop even from the angle nothing is visible (and this is "matt" for me) and in AUO v5 directly you see part of reflections and from the angle you see everything.

Once again please note, that AUO writes anti-glare, not matt.

2. privacy filters are a little different thing.

3. if you're right about PWM, you should be able to explain my doubts. I don't see such explanation and it can't be provided, when theory is wrong.

4. See on the page: http://corp.sony.com.my/vaio/tech_arg.html Manufacturers are advertising even something like "Anti-reflective glossy"

[andregarcia_1]

Hi guys, I have a Windows 7 installed in one partition, I will install a hackintosh in another. How can I select the OS before enter Windows? Is it necessary to install any pre-os program?

Is this AUO cover 92% RGB?
Is it worth trade my LG for one of this? I need to change some cables?