BENQ XL2430T Query
Re: BENQ XL2430T Query
Can I ask you to write guide for me step by step how to basically everything set (strobe, VT trick, blur reduction) to XL2430T? Because I went under instructions as there are (strobe on, VT 1350, and blur on) and brightness at 39 I havent very dark picture and everyone has 100 brightness..
-
Falkentyne
- Posts: 2805
- Joined: 26 Mar 2014, 07:23
Re: BENQ XL2430T Query
Um I don't really write guides.
And the how to's and guides are on the front page. of the website. Plus there are so many posts already....
And the how to's and guides are on the front page. of the website. Plus there are so many posts already....
-
AlfieJPalmer
- Posts: 11
- Joined: 25 Nov 2014, 08:48
Re: BENQ XL2430T Query
Hi again,Falkentyne wrote:None of the strobe settings apply if blur reduction is off. Just you may see some faint inversion lines on the desktop if using VT tweaks.
But what was supposed to happen is, when using strobe phase 000 (area 0), and 50hz single strobe, turning on blur reduction should cause a MASSIVE increase in brightness with no strobing activating at all. If the brightness is at 100, the LEDs will be massively overdriven. So I wanted you to try 50hz with an area (strobe phase) of 0, and something like a duty of 10 or something.
At 60hz, strobing will work and the screen will darken by a lot (and you'll get lots of flicker).
If 50hz single strobe were actually working, you'ld notice it instantly..the screen would darken by a lot (depending on the intensity (strobe duty) and the flickering would be --much-- worse than at 60hz--you wouldn't be able to tolerate it.
Yes, you were right; the brightness/overdriven LED's are incredible, it's like staring at the sun
The flicker wasn't much worse than standard 60hz i.m.o, so not sure if I did something wrong (I only tested by dragging some windows around the desktop). Let me know if you have any ideas!
A.
-
Falkentyne
- Posts: 2805
- Joined: 26 Mar 2014, 07:23
Re: BENQ XL2430T Query
It means that 50hz strobing is bugged.
You didn't get any strobing. What you got was the monitor attempting to strobe but the strobing not activating. So the 50hz backlight pulse widths don't single strobe at all. It ONLY double strobes (if single strobe is set to off).
Whenever blur reduction is turned on, the current to the backlight is increased significantly, because strobing cuts the effective brightnes by a lot (depending on the persistence). If it were not increased, then the strobing would be too dark.
I believe ULMB does not increase the backlight current--that's why AFAIK, there were so many complaints about ULMB being too dim. Lightboost and Benq BR do increase the current to give some compensation for the strobing; I think Turbo240(Eizo) does also.
Anyway, that issue isn't a problem since usually most games that run at 60hz will run at 60hz and not something lower (e.g. Ultra street fighter 4, Dark souls, dark souls 2, etc)
It's only an issue in a few games that improperly try to use the very first refresh rate -available- instead of 60hz, e.g. Crysis and either Crysis warhead or Crysis 2. If you are running Crysis at native resolution, it will use the lowest refresh rate selectable in the drivers. That may be 29 hz (!), 50hz or 60hz, depending on the monitor. If it's 50 hz well, that's exactly how I found out about this bug.
There's one other game that tries to start at 50hz if it's available instead of 60hz, but I don't remember what it is.
Only happens in DX10 mode. Usually Crysis runs in DX9 mode on windows XP and you can use the -dx9 parameter to make it run in dx9 on W7/8. Or you can force Crysis to run at 100hz all the time by deleting all of the established and standard resolutions, the extension block, and 60hz from detailed resolutions, and then adding 100hz 120hz and 144hz (reduced) yourself.
Besides doing that, the easiest way to 'avoid' this issue from happening is to set single strobe off, so that double strobe (which DOES work correctly at 50hz) will be activated at 50, 60 and 75hz. Then if you want single strobe at 60hz, just enter the service menu and turn it on.
-or- you can use a 50hz VT tweak (as you had before) which will make the monitor use the 60hz pulse widths instead of the 50hz pulse widths (which will make 50hz single strobe, with mad flicker), but that does take up a line in detailed resolutions on CRU, and you only have four available.
I don't believe 50hz single strobe was ever tested. When V1 firmware came out, it ALWAYS double strobed at 50-75hz and single strobed at 76+hz. When V2 came out, they allowed a single strobe option for 60hz, but they apparently forgot about 50hz (who uses 50hz anyway?). BTW, on a FRESH driver install or monitor registry entry (e.g. running reset-all.exe from custom resolution utility), the benq monitors don't have 50hz at all in DVI mode (Hdmi has it, though). 50hz only appears after making -any- change in CRU (even adding or deleting a standard resolution entry), The VG248QE has it by default.
You didn't get any strobing. What you got was the monitor attempting to strobe but the strobing not activating. So the 50hz backlight pulse widths don't single strobe at all. It ONLY double strobes (if single strobe is set to off).
Whenever blur reduction is turned on, the current to the backlight is increased significantly, because strobing cuts the effective brightnes by a lot (depending on the persistence). If it were not increased, then the strobing would be too dark.
I believe ULMB does not increase the backlight current--that's why AFAIK, there were so many complaints about ULMB being too dim. Lightboost and Benq BR do increase the current to give some compensation for the strobing; I think Turbo240(Eizo) does also.
Anyway, that issue isn't a problem since usually most games that run at 60hz will run at 60hz and not something lower (e.g. Ultra street fighter 4, Dark souls, dark souls 2, etc)
It's only an issue in a few games that improperly try to use the very first refresh rate -available- instead of 60hz, e.g. Crysis and either Crysis warhead or Crysis 2. If you are running Crysis at native resolution, it will use the lowest refresh rate selectable in the drivers. That may be 29 hz (!), 50hz or 60hz, depending on the monitor. If it's 50 hz well, that's exactly how I found out about this bug.
There's one other game that tries to start at 50hz if it's available instead of 60hz, but I don't remember what it is.
Only happens in DX10 mode. Usually Crysis runs in DX9 mode on windows XP and you can use the -dx9 parameter to make it run in dx9 on W7/8. Or you can force Crysis to run at 100hz all the time by deleting all of the established and standard resolutions, the extension block, and 60hz from detailed resolutions, and then adding 100hz 120hz and 144hz (reduced) yourself.
Besides doing that, the easiest way to 'avoid' this issue from happening is to set single strobe off, so that double strobe (which DOES work correctly at 50hz) will be activated at 50, 60 and 75hz. Then if you want single strobe at 60hz, just enter the service menu and turn it on.
-or- you can use a 50hz VT tweak (as you had before) which will make the monitor use the 60hz pulse widths instead of the 50hz pulse widths (which will make 50hz single strobe, with mad flicker), but that does take up a line in detailed resolutions on CRU, and you only have four available.
I don't believe 50hz single strobe was ever tested. When V1 firmware came out, it ALWAYS double strobed at 50-75hz and single strobed at 76+hz. When V2 came out, they allowed a single strobe option for 60hz, but they apparently forgot about 50hz (who uses 50hz anyway?). BTW, on a FRESH driver install or monitor registry entry (e.g. running reset-all.exe from custom resolution utility), the benq monitors don't have 50hz at all in DVI mode (Hdmi has it, though). 50hz only appears after making -any- change in CRU (even adding or deleting a standard resolution entry), The VG248QE has it by default.
Last edited by Falkentyne on 09 Dec 2014, 16:23, edited 1 time in total.
-
AlfieJPalmer
- Posts: 11
- Joined: 25 Nov 2014, 08:48
Re: BENQ XL2430T Query
So it's actually a bug in the monitor firmware?
Also.. I've never played with these VT tweaks, are they worth a look?
I've been really enjoying the settings listed earlier in the thread with 'Single Strobe: [OFF];' feels very nice now =p. Just guess I'll start tweaking again when I come around to playing games that don't support 144hz natively. =))
Also.. I've never played with these VT tweaks, are they worth a look?
I've been really enjoying the settings listed earlier in the thread with 'Single Strobe: [OFF];' feels very nice now =p. Just guess I'll start tweaking again when I come around to playing games that don't support 144hz natively. =))
-
Falkentyne
- Posts: 2805
- Joined: 26 Mar 2014, 07:23
Re: BENQ XL2430T Query
DEFINITELY use the VT Tweaks. Without the VT Tweaks, you will have very noticeable thick double ghosting either at the top and bottom of the screen, or it will be clear at the top and the double ghosting will take up a lot of the bottom (depending on how you set the area).
With the VT 1500 tweak and Strobe phase set to 000 (Area in the OSD), the top crosstalk will be at the very top of the screen (OR pushed off the screen) if the strobe duty (intensity) is low enough, and will be --completely-- off the bottom of the screen, because using a 1500 VT gives the panel enough time to refresh between the top and bottom strobe pulses (basically, within a frame) which is pretty much what Lightboost mode does through a different LC Panel update (instead of a VT tweak).
When using the VT tweak, keep strobe phase at 000. Going too high on the strobe phase with the VT tweak can cause the backlight to shut off, e.g. with VT 1500 tweak, the brightness starts getting dimmer at 054, actually the persistence is going down (without the strobe duty decreasing--you can tell by the moving images getting clearer again), then strobe phase 059 will be using 0.167ms persistence--which will be the same as strobe phase 000 with strobe duty 001, except the crosstalk pulse will be at the bottom of the screen instead of at the very top, then strobe phase 060 is basically 0ms persistence, meaning no backlight
(strobe phase can go up as high as 100, at 100hz, 120hz and 144hz, without the VT tweak, and will just keep moving the crosstalk field lower. With the VT tweaks, the crosstalk field gets moved much lower than before with higher separation between pulses.
You will need a pixel clock patcher for VT tweaks, if the pixel clock exceeds 330.00 mhz.
With the VT 1500 tweak and Strobe phase set to 000 (Area in the OSD), the top crosstalk will be at the very top of the screen (OR pushed off the screen) if the strobe duty (intensity) is low enough, and will be --completely-- off the bottom of the screen, because using a 1500 VT gives the panel enough time to refresh between the top and bottom strobe pulses (basically, within a frame) which is pretty much what Lightboost mode does through a different LC Panel update (instead of a VT tweak).
When using the VT tweak, keep strobe phase at 000. Going too high on the strobe phase with the VT tweak can cause the backlight to shut off, e.g. with VT 1500 tweak, the brightness starts getting dimmer at 054, actually the persistence is going down (without the strobe duty decreasing--you can tell by the moving images getting clearer again), then strobe phase 059 will be using 0.167ms persistence--which will be the same as strobe phase 000 with strobe duty 001, except the crosstalk pulse will be at the bottom of the screen instead of at the very top, then strobe phase 060 is basically 0ms persistence, meaning no backlight
(strobe phase can go up as high as 100, at 100hz, 120hz and 144hz, without the VT tweak, and will just keep moving the crosstalk field lower. With the VT tweaks, the crosstalk field gets moved much lower than before with higher separation between pulses.You will need a pixel clock patcher for VT tweaks, if the pixel clock exceeds 330.00 mhz.