Re: Zowie XL2720 no inverse ghosting while MBR: off, AMA: hi
Posted: 02 May 2017, 15:03
Ok I flashed it. No idea what was changed besides the logos and ID string. I remember someone having a "Zowie V5" also. I can't tell a difference in anything. Probably some stuff with displaypilot or something.
I'm more than 200% sure that 50hz single strobe still causes the monitor to hard reset itself because there is no single strobe data for 50hz so the LED current gets increased by 1.8x by the MBR flag anyway, triggering OCP.
(remember these monitors were reverse engineered from Lightboost. That's why V1 version of the monitors double strobed from 50hz to 85hz, which is exactly what Lightboost monitors did if you checked the "Keep monitor in 3d mode: always" in the 3d vision tab, and that's why both MBR and Lightboost increase backlight current by 1.8x when the strobe signal is set). While 50hz had double strobe data, Benq neglected to add any single strobe data for 50hz, yet backlight current still gets increased, triggering a hard reset (if the strobe duty is higher than 006 and brightness is set to 100%).
Chief, I know you probably don't believe me, but I still personally think the fact that VT tweaks work is an 'Unintended bug" with how Benq designed Lightboost to work with the monitor.
I believe I can prove this :
If you still have your old XL2420TE/TX or XL2720T (make sure its NOT the 120hz panel but the 144hz panel; the XL2720T used a CMI panel (same as VG278H), so it's unknown whether you would get a scrambled screen or not.
However someone here DID test a VT 1500 tweak on an XL2411T monitor. It worked but the screen was scrambled.
Try these timings (do NOT use the NVCP for this! ToastyX CRU only):
H:2560
48
32
2720
V: 1440
3
5
1500
Refresh rate: 100hz.
(this will require the DVI pixel clock patcher. Displayport will cause link errors unless you have updated firmware by Benq; this is what XL2420Z and XL2720Z V4 firmware fixed (I found this information on Benq's support page replies)
This works on the XL2420Z, XL2411Z, XL2720Z, XL2430T, and SHOULD work on the Lightboost 144hz panels.
VT tweaks above 1185 will cause an "Out of Range" error on Asus screens because their firmware blocks all custom VT totals.
tl;dr: Lightboost sends a "VT 1500" signal to the firmware in a different way than a custom 1500 VT resolution.
(you can check this in the factory menu; VT 1497-VT 1502 report 1280x1440@60hz as the resolution while VT 1481-VT 1485 report "Out of Range", with a resolution of 1920x1440 (which is why the OOR error appears on the OSD).
I'm more than 200% sure that 50hz single strobe still causes the monitor to hard reset itself because there is no single strobe data for 50hz so the LED current gets increased by 1.8x by the MBR flag anyway, triggering OCP.
(remember these monitors were reverse engineered from Lightboost. That's why V1 version of the monitors double strobed from 50hz to 85hz, which is exactly what Lightboost monitors did if you checked the "Keep monitor in 3d mode: always" in the 3d vision tab, and that's why both MBR and Lightboost increase backlight current by 1.8x when the strobe signal is set). While 50hz had double strobe data, Benq neglected to add any single strobe data for 50hz, yet backlight current still gets increased, triggering a hard reset (if the strobe duty is higher than 006 and brightness is set to 100%).
Chief, I know you probably don't believe me, but I still personally think the fact that VT tweaks work is an 'Unintended bug" with how Benq designed Lightboost to work with the monitor.
I believe I can prove this :
If you still have your old XL2420TE/TX or XL2720T (make sure its NOT the 120hz panel but the 144hz panel; the XL2720T used a CMI panel (same as VG278H), so it's unknown whether you would get a scrambled screen or not.
However someone here DID test a VT 1500 tweak on an XL2411T monitor. It worked but the screen was scrambled.
Try these timings (do NOT use the NVCP for this! ToastyX CRU only):
H:2560
48
32
2720
V: 1440
3
5
1500
Refresh rate: 100hz.
(this will require the DVI pixel clock patcher. Displayport will cause link errors unless you have updated firmware by Benq; this is what XL2420Z and XL2720Z V4 firmware fixed (I found this information on Benq's support page replies)
This works on the XL2420Z, XL2411Z, XL2720Z, XL2430T, and SHOULD work on the Lightboost 144hz panels.
VT tweaks above 1185 will cause an "Out of Range" error on Asus screens because their firmware blocks all custom VT totals.
tl;dr: Lightboost sends a "VT 1500" signal to the firmware in a different way than a custom 1500 VT resolution.
(you can check this in the factory menu; VT 1497-VT 1502 report 1280x1440@60hz as the resolution while VT 1481-VT 1485 report "Out of Range", with a resolution of 1920x1440 (which is why the OOR error appears on the OSD).