Cepler,
I had the same problem. Go to this site and download this program and run it. After I made my adjustment up to 500mhz or 1000mhz I had no more lag.
I had used that to bump it up but am still experiencing the problem. When you drag the mouse left/right on a window frame it's very evident that the lag is still there.
I received a response back from eVGA (I have an eVGA 6800 GT, PCI-Express) and they alluded to the fact that the card is a single link DVI and this monitor requires dual link....which I find to be false since Dell clearly shows many single link DVI cards as compatible...and if this WAS the case then it should work via Analog at the very least (Something I actually haven't tried but which makes no real sense since I am getting a full desktop image just fine, it's just the mouse movement that is a problem).
So, so far, it's just been a bunch of fingerpointing with no real information.
I suspect nVidia has a driver bug somewhere and since not a lot of people are using 2405FPW's or such large displays they're not getting enough feedback about the problem. Also, the problem is so subtle that a typical non-anaal (An/\L is a bad word in this context?! pfffft) person might not notice it. (But the differences are clearly visible if you do my tests above, even to a typical user)
And just for clarity regarding eVGA's silly cop-out saying the card can't handle 1920x1200 on DVI, here is some information on DVI:
http://en.wikipedia.org/wiki/DVI
As explained here single link should be good up to 165 MHz, 1920x1200@60 Hz should be at around 154 MHz whereas 1600x1200@60 Hz would be 161 MHz. So why in the world would single link work with 1600x1200@60 but not 1920x1200@60? Certainly isn't a single link/dual link issue... That response they sent me really unrinates me off.
I notice this problem on the panel and it affects more than mouse movement - it's not apparent on my Dell P1130 (Sony G520 rebadged) CRT at 1600x1200 at 60 or 100hz. That screen will also sync at 1920x1200 at 60hz - same as the Dell - so I set it up accordingly. Used the analog connector on the panel. Plugged the CRT in, tested it, plugged the LCD in, tested it - LCD is noticably more laggy than the CRT.
Interesting!
The lag I've been testing for and been able to replacate is discovered by moving windows around, not using the mouse but using the window position as a judge of how quick the panel responds. Adding the mouse cursor in there for nvidia cards does make it seem worse, especially given that most people haven't tweaked their graphics drivers to tell windows (and the mouse driver) to use a higher polling rate so they move their mouse faster, which gives more of a lag effect.
I also notice it on ATI cards. I guess the nvidia driver issues just amplifies the issue.
Message Edited by EvilZardoz on 08-09-2005 05:44 AM
Hello, I'm not sure if this is the same problem; my experience was with the 2005fpw and a dell computer with the nVidia 6800 graphics card, both of which I recently bought.
I noticed the pointer just felt like it was dragging across the screen no matter how fast or how far I moved the mouse. I went into the mouse settings (winxp) Start-->Control Panel-->Printers and Other Hardware-->Mouse, selected the tab at the top that says "pointer options", in the motion section I moved the slider all the way to the right (fast), and the mouse/pointer have been acting normal now.
I have never owned or used a 2005FPW however I'm told that the 2005FPW panels exhibit the same issue ... they also use the same gm1601 image processor.
I've made arrangements to return my panel today. It's all boxed up again.
I had this very same problem. I fixed it by setting my screen on 100Hz in windows, I know 2405FPW only does 60Hz on 1920x1200 but it works for some weird reason.
I have an ati card so i don't think it's a video card driver problem (since you have a nvidia). I also had my usb set on 500Hz but that didn't fix the problem.
I hope dell will take a look at this because i know other people with the same problem.
It's probably just the drastically higher resolution on the 2005fpw compared to your old one. Since the desktop is so much larger it would feel like your mouse wasn't moving quite as fast. You can just turn up your mouse sensitivity to compensate.
It's not sensitivity, it's how the mouse responds to movement, you can feel yourself overshooting buttons and SEE the lag when you drag the corner of a window frame, as stated in my original post. If the PANEL was lagging, both the window and cursor would lag the same amount, in sync. It's obviously some driver issue with higher resolution displays on the DVI output.
I got into the factory menu and disabled 'ISP Mode' but I believe this is just 'In-Situ Programming' which is just a way to update the firmware etc and shouldn't have any effect on the display.
I don't think its something to do with high resolution.
I play allot of games, mostly counter-strike source in 1280x768 and there i had the mouse lag also, the game was actually unplayable because you couldn't aim correctly.
edit: Does Dell check this forum ? or do you have to mail them to get their attention ?
My panel was collected a week ago and I await my full refund including refund of shipping.
I still use one of these panels occasionally and while the lag is there, I am amazed at the amount of colour and sharpness these panels have compared to the LG-Philips S-IPS based panels. Brightness blows me away in a bright room.
Pity about the lacking gm1601 chip and a pity that Dell didn't get this one right the first time - if they did, I would be ordering some more.
So, I've been going back and forth with eVGA about this lag issue and they've been unhelpful so far, heres the thread thus far:
The reply to your support request to eVGA.com is as follows (Last reponse first, bottom=begining):
HI Chris,
The maximum resolution for this video card is 1600x1200 or 1900x1280 with
reduced vertical blanking. We are still waiting for a response from our
engineers. You can contact me on this issue directly at my direct email
address at fmacagba@evga.com.
-EVGA Customer Service
------------------------------------------------------
A complete record of all past messages is as follows:
------------------------------------------------------
Question (8/29/2005 10:11:52 PM): Please read the conplete case notes
entirely before responding. The last I heard eVGA engineers were
contacting nVidia regarding this issue and I would like to know what has
been learned from this contact. If you would bother to read the case you
would see that I am not using analog, I'm using DVI and that DVI single
link is fully supported by your card (which I would expect you to know) at
1920x1200x60Hz (This timing is completely within single link DVI spec).
Answer (8/30/2005 10:25:32 AM): HI Chris,
The maximum resolution for this video card is 1600x1200 or 1900x1280 with
reduced vertical blanking. We are still waiting for a response from our
engineers. You can contact me on this issue directly at my direct email
address at fmacagba@evga.com.
-EVGA Customer Service
Question (8/29/2005 12:23:35 AM): What have your engineers heard from
nVidia regarding this issue?
Answer (8/29/2005 6:23:02 PM): This video card will output a max
resolution of 2048 X 1536 with an analog connection. If you are using this
and having problems with the mouse cursor locking up, you may have a
problem with the refresh rate. If changing the refresh rate doesn't help
then there may be a problem with the EDID protocal on your monitor. You
may want to download an EDID reader program online, see if you can
retrieve, and translate the EDID data. If you cannot retreive or translate
the EDID data, then your problem resides with the monitor and you will
need to contact Dell for a fix. You can find a EDID reader program from
viewsonics website. Just search for EDID, click on the drivers and utility
link, and then download the EDID.exe program.
Question (8/15/2005 12:42:34 PM): What has your engineering department
found regarding this issue? Have they made contact with nVidia? This is
not an isolated incident, there are many others with similar symptoms.
Answer (8/16/2005 5:16:30 PM): Hi Chris,
We are currently contacting nVidia on this issue. I was informed by our
engineering dept that this card will support this resolution at reduce
blanking.
-EVGA Customer Service
Question (8/8/2005 9:12:44 PM): I do not believe this is a defect in the
video card as many other people have reported this problem with other
vendors video cards, many of them nVidia cards. This is yet another
reason why I suspect a possible driver issue. Can you please contact
nVidia regarding this issue and have them reproduce it in-house. I do not
care to be without a system while waiting on a video card replacement
which is most likely NOT going to correct the problem. Please take the
time to research this issue.
Answer (8/9/2005 10:05:35 AM): Hi Chris,
I'll go ahead and forward this issue to our engineering department so they
can research this issue.
-EVGA Customer Service
Question (8/8/2005 11:52:44 AM): The response that this display will not
work with single link makes no sense:
Single link will handle I believe up to 165 MHz. 1600x1200@60Hz with GTF
blanking is about 161 MHz.
1920x1200@60Hz with GTF blanking is about 161 MHz, LESS than 1600x1200.
Your argument about Single link is baseless.
A single link DVI should handle 60 Hz refresh displays up to 2.6
Megapixels. 1920x1200 is only about 2.3MP and is well within the
capabilities of single link DVI. Now, can we get past this single/dual
link discussion and address the real issues please?
Answer (8/8/2005 4:47:49 PM): Hi Chris,
As stated in the previous email, The video card seems to be
non-functioning or having problems. It is suggested to contact the vendor
for a replacement. If they cannot assist you or the return/warranty period
has passed with them, you can go to our RMA site online here at this link,
http://www.evga.com/RMA/default.asp.
From this listing it lists the GeForce 6800 which is not 'Dual Link' and
is listed as compatible.
And from your own specification sheet:
http://www.evga.com/products/pdf/N376.pdf
It states that 32 bit is supported up to 2048x1536 at 60Hz.
So again, I ask, how can I resolve this problem as the products are
supposed to be compatible according to both Dell and eVGA's own
information.
Answer (8/8/2005 8:52:47 AM): Hi Chris,
The video card seems to be non-functioning or having problems. It is
suggested to contact the vendor for a replacement. If they cannot assist
you or the return/warranty period has passed with them, you can go to our
RMA site online here at this link, http://www.evga.com/RMA/default.asp.
-EVGA Customer Service
Question (8/4/2005 11:28:20 PM): Upon attaching a new flat panel display
(Dell 2405FPW) I am experiencing 'mouse lag' on my DESKTOP. When I
disable hardware cursor (reduce acceleration 1 notch in troubleshooting)
the problem seems to clear up. I am running nVidia drivers 77.72 and have
also tried the beta 77.76 drivers, same problem. This display is being
run at 1920x1200 native resolution.
The problem exhibits itself as a lag and can be reproduced by opening a
notepad window and grabbing the lower right corner and dragging the window
left/right. You will see the mouse lagging behind the window frame. When
you disable the hardware cursor acceleration the mouse sticks to the frame
and does not lag. I suspect this is a driver issue but have no way to
relate this to nVidia for correction/testing. I would appreciate it if
you could provide any information as to possible workarounds for this if
this is a known problem with this video card or if there is no solution,
please relay my frustration to nVidia! If it comes down to it I may end
up switching back to ATI. :(
Answer (8/5/2005 3:43:56 PM): Hi Chris,
I have looked up the profile for your video card and it is showing me that
this video card is a single link DVI video card. The maximum resolution
through the DVI port is 1600 x 1200 and will not work correctly at the
1920 x 1200 resolution.
You don't understand the problem, it's not a problem of how FAST the mouse moves from point A to point B, it's about how fast it REACTS to INPUT and that that input is reflected on the screen. The result is that you find yourself overshooting buttons and you find yourself having to 'zone-in' on buttons becuase of the lag. It's hard to explain but you can definatly 'feel' it.
ChemOp
10 Posts
0
August 8th, 2005 05:00
I had the same problem. Go to this site and download this program and run it. After I made my adjustment up to 500mhz or 1000mhz I had no more lag.
http://www.tcmagazine.info/downloads/usbmrs11.exe
Message Edited by ChemOp on 08-08-2005 02:37 AM
cepler
12 Posts
0
August 8th, 2005 12:00
cepler
12 Posts
0
August 8th, 2005 15:00
So, so far, it's just been a bunch of fingerpointing with no real information.
I suspect nVidia has a driver bug somewhere and since not a lot of people are using 2405FPW's or such large displays they're not getting enough feedback about the problem. Also, the problem is so subtle that a typical non-anaal (An/\L is a bad word in this context?! pfffft) person might not notice it. (But the differences are clearly visible if you do my tests above, even to a typical user)
cepler
12 Posts
0
August 8th, 2005 20:00
http://en.wikipedia.org/wiki/DVI
As explained here single link should be good up to 165 MHz, 1920x1200@60 Hz should be at around 154 MHz whereas 1600x1200@60 Hz would be 161 MHz. So why in the world would single link work with 1600x1200@60 but not 1920x1200@60? Certainly isn't a single link/dual link issue... That response they sent me really unrinates me off.
EvilZardoz
37 Posts
0
August 9th, 2005 09:00
Message Edited by EvilZardoz on 08-09-2005 05:44 AM
JustJules
27 Posts
0
August 9th, 2005 23:00
I noticed the pointer just felt like it was dragging across the screen no matter how fast or how far I moved the mouse. I went into the mouse settings (winxp) Start-->Control Panel-->Printers and Other Hardware-->Mouse, selected the tab at the top that says "pointer options", in the motion section I moved the slider all the way to the right (fast), and the mouse/pointer have been acting normal now.
EvilZardoz
37 Posts
0
August 10th, 2005 11:00
Soul_
2 Posts
0
August 10th, 2005 15:00
I had this very same problem.
I fixed it by setting my screen on 100Hz in windows, I know 2405FPW only does 60Hz on 1920x1200 but it works for some weird reason.
I have an ati card so i don't think it's a video card driver problem (since you have a nvidia).
I also had my usb set on 500Hz but that didn't fix the problem.
I hope dell will take a look at this because i know other people with the same problem.
drew-and-not-u
494 Posts
0
August 10th, 2005 15:00
cepler
12 Posts
0
August 10th, 2005 15:00
I got into the factory menu and disabled 'ISP Mode' but I believe this is just 'In-Situ Programming' which is just a way to update the firmware etc and shouldn't have any effect on the display.
Soul_
2 Posts
0
August 10th, 2005 16:00
edit: Does Dell check this forum ? or do you have to mail them to get their attention ?
Message Edited by Soul_ on 08-10-2005 06:24 PM
EvilZardoz
37 Posts
0
August 25th, 2005 13:00
cepler
12 Posts
0
August 31st, 2005 15:00
The reply to your support request to eVGA.com is as follows (Last reponse first, bottom=begining):
HI Chris,
The maximum resolution for this video card is 1600x1200 or 1900x1280 with
reduced vertical blanking. We are still waiting for a response from our
engineers. You can contact me on this issue directly at my direct email
address at fmacagba@evga.com.
-EVGA Customer Service
------------------------------------------------------
A complete record of all past messages is as follows:
------------------------------------------------------
Question (8/29/2005 10:11:52 PM): Please read the conplete case notes
entirely before responding. The last I heard eVGA engineers were
contacting nVidia regarding this issue and I would like to know what has
been learned from this contact. If you would bother to read the case you
would see that I am not using analog, I'm using DVI and that DVI single
link is fully supported by your card (which I would expect you to know) at
1920x1200x60Hz (This timing is completely within single link DVI spec).
Answer (8/30/2005 10:25:32 AM): HI Chris,
The maximum resolution for this video card is 1600x1200 or 1900x1280 with
reduced vertical blanking. We are still waiting for a response from our
engineers. You can contact me on this issue directly at my direct email
address at fmacagba@evga.com.
-EVGA Customer Service
Question (8/29/2005 12:23:35 AM): What have your engineers heard from
nVidia regarding this issue?
Answer (8/29/2005 6:23:02 PM): This video card will output a max
resolution of 2048 X 1536 with an analog connection. If you are using this
and having problems with the mouse cursor locking up, you may have a
problem with the refresh rate. If changing the refresh rate doesn't help
then there may be a problem with the EDID protocal on your monitor. You
may want to download an EDID reader program online, see if you can
retrieve, and translate the EDID data. If you cannot retreive or translate
the EDID data, then your problem resides with the monitor and you will
need to contact Dell for a fix. You can find a EDID reader program from
viewsonics website. Just search for EDID, click on the drivers and utility
link, and then download the EDID.exe program.
Question (8/15/2005 12:42:34 PM): What has your engineering department
found regarding this issue? Have they made contact with nVidia? This is
not an isolated incident, there are many others with similar symptoms.
Answer (8/16/2005 5:16:30 PM): Hi Chris,
We are currently contacting nVidia on this issue. I was informed by our
engineering dept that this card will support this resolution at reduce
blanking.
-EVGA Customer Service
Question (8/8/2005 9:12:44 PM): I do not believe this is a defect in the
video card as many other people have reported this problem with other
vendors video cards, many of them nVidia cards. This is yet another
reason why I suspect a possible driver issue. Can you please contact
nVidia regarding this issue and have them reproduce it in-house. I do not
care to be without a system while waiting on a video card replacement
which is most likely NOT going to correct the problem. Please take the
time to research this issue.
Answer (8/9/2005 10:05:35 AM): Hi Chris,
I'll go ahead and forward this issue to our engineering department so they
can research this issue.
-EVGA Customer Service
Question (8/8/2005 11:52:44 AM): The response that this display will not
work with single link makes no sense:
Single link will handle I believe up to 165 MHz. 1600x1200@60Hz with GTF
blanking is about 161 MHz.
1920x1200@60Hz with GTF blanking is about 161 MHz, LESS than 1600x1200.
Your argument about Single link is baseless.
A single link DVI should handle 60 Hz refresh displays up to 2.6
Megapixels. 1920x1200 is only about 2.3MP and is well within the
capabilities of single link DVI. Now, can we get past this single/dual
link discussion and address the real issues please?
Answer (8/8/2005 4:47:49 PM): Hi Chris,
As stated in the previous email, The video card seems to be
non-functioning or having problems. It is suggested to contact the vendor
for a replacement. If they cannot assist you or the return/warranty period
has passed with them, you can go to our RMA site online here at this link,
http://www.evga.com/RMA/default.asp.
-EVGA Customer Service
Question (8/8/2005 8:42:35 AM): Please read:
http://www1.us.dell.com/content/learnmore/learnmore.aspx?c=us&cs=555&l=en&s=biz&~id=monitors&~line=desktops&~mode=popup&~series=optix&~tab=other','popup575x500','WIDTH=575,HEIGHT=500,RESIZABLE=YES,SCROLLBARS=YES,TOOLBAR=yes,LEFT=0,TOP=20');javascript:winopen('http://www1.us.dell.com/content/learnmore/learnmore.aspx?c=us&cs=555&l=en&s=biz&~id=monitors&~line=desktops&~mode=popup&~series=optix&~tab=other
From this listing it lists the GeForce 6800 which is not 'Dual Link' and
is listed as compatible.
And from your own specification sheet:
http://www.evga.com/products/pdf/N376.pdf
It states that 32 bit is supported up to 2048x1536 at 60Hz.
So again, I ask, how can I resolve this problem as the products are
supposed to be compatible according to both Dell and eVGA's own
information.
Answer (8/8/2005 8:52:47 AM): Hi Chris,
The video card seems to be non-functioning or having problems. It is
suggested to contact the vendor for a replacement. If they cannot assist
you or the return/warranty period has passed with them, you can go to our
RMA site online here at this link, http://www.evga.com/RMA/default.asp.
-EVGA Customer Service
Question (8/4/2005 11:28:20 PM): Upon attaching a new flat panel display
(Dell 2405FPW) I am experiencing 'mouse lag' on my DESKTOP. When I
disable hardware cursor (reduce acceleration 1 notch in troubleshooting)
the problem seems to clear up. I am running nVidia drivers 77.72 and have
also tried the beta 77.76 drivers, same problem. This display is being
run at 1920x1200 native resolution.
The problem exhibits itself as a lag and can be reproduced by opening a
notepad window and grabbing the lower right corner and dragging the window
left/right. You will see the mouse lagging behind the window frame. When
you disable the hardware cursor acceleration the mouse sticks to the frame
and does not lag. I suspect this is a driver issue but have no way to
relate this to nVidia for correction/testing. I would appreciate it if
you could provide any information as to possible workarounds for this if
this is a known problem with this video card or if there is no solution,
please relay my frustration to nVidia! If it comes down to it I may end
up switching back to ATI. :(
Answer (8/5/2005 3:43:56 PM): Hi Chris,
I have looked up the profile for your video card and it is showing me that
this video card is a single link DVI video card. The maximum resolution
through the DVI port is 1600 x 1200 and will not work correctly at the
1920 x 1200 resolution.
-EVGA Customer Service
EvilZardoz
37 Posts
0
September 1st, 2005 08:00
Sounds like they need a clue.
Did you tell them that there is lag at 800x600 as well?
cepler
12 Posts
0
September 1st, 2005 15:00