Drifting cursor windows xp

The mouse movement code is seriously broken in Windows XP bit. The cursor moves at least 1 whole pixel up or left on every update with negative mickeys, which becomes most apparent at the lowest sensitivity. In essence, the optimizing compiler used to compile win32k. As the remainder is already negative when iNumerator is , we just need to increment dx to account for the asymmetry of the bit-shift division. So far so good, but I've been unable to make Windows boot with a modified win32k.

So it must be due to a bad digital driver signature. How could I make windows load non signed kernel drivers, or win32k. The compiler has included the stuff to do this cdq;movzx edx,dl Same thing happens with dy calculation mov r10d, eax. In hex the operations are 44 8B D8 and 44 8B D0 and should be moved to just before the sar opcode 41 C Your analysis is excellent and I enjoyed reading it really!

Could you, or would you mind if I, turn it into a guest blog post and added it to my blog? Is the problem fixable? Likely you will have to sign the modified win32k. Driver Signature Enforcement Overrider is a tool that should make using Test Mode as painless as possible. Unfortunately the fix only works at a single Pointer speed slider setting.

I wonder if that support article was about this? I'm not sure why I used the word "unsafe", that would be a severe understatement! Obviously win32k. I would be honored. Although my interest in the topic is focused on making my own system work properly, and mainly came here for help. Also the findings really only concern a rarely used version of Windows. Yes, DSEO does both the signing and enabling test mode, although I'm not sure whether the latter was necessary, or indeed if Test Mode even exists in XP x64, as the tool doesn't list it as a supported OS.

I was now able to boot with the modified win32k. Yes, but unfortunately a similar problem exists independently! Meaning no help from leaked sources, so it's harder to say exactly what's happening. Judging from the values, it's possible that the remainders are reset to 0 whenever a raw 0 is received for either direction.

If you move fast enough in an oblique enough angle, or in a completely straight orthogonal line, there are no problems. The function seems to have 5 static variables, 2 of which are likely the dx and dy remainders, so it shouldn't be an impossible task to find when and why the remainders are reset. Thanks, when I get some time, I may do so. Version 1. If you weren't using 1. Yes, that does happen sometimes. Yes, that's what this blog post is mostly about, that remainders are reset sometimes.

IF this problem had been on Vista, my suggestion of using a reg fix would have made sense Look at the URL for my blog Haha, I had noticed actually, but it's somehow easier to write from an independent perspective.

What about the USB optical mouse when I plug that in it does the same thing. With the optical mouse I can grab the cursor and drag it back, but as soon as I let it go it starts floating across the screen again. I try removing the mouse and rebooting first. Thanks Ken. It isn't the optical mouse that's doing it. It is the touchpad. If you will notice, the touchpad still works even when the optical mouse is working also. As Seen On. Welcome to Tech Support Guy!

Latest posts. System Restore Interrupted laptop now unbootable 7 Viewers Latest: redhawk50 1 minute ago. Windows M 47 minutes ago. General Security. M 52 minutes ago. Windows 10 activity light. It has nothing to do with the hardware whatsoever, just like the drifting of the pointer when using the touchpad has nothing to do with the hardware. It is a software issue. The cursors are run via software. People do see it as Dell's problem because we expect one-stop service from the people we buy our hardware from, but it is actually due to software written by a totally different company.

Suggest you look at the Moving Mouse Cursor - Inspiron thread, which is relevant, and perhaps make it the one to put pressure on Dell. I reckon this is a problem for many users caused by a physical design flaw. This view supported by some of the comments on that thread - it looks to me like it's a loose connection disrupting the electrical input to the software.

Very easy to fix without spending money - just disable the keyboard mouse tracker using the properties on the icon on teh toolbar. I am so glad that you have all posted replies to this issue. I have a new Inspiron bought this June and just started having a similar problem with my synaptics touchpad.

When i try to use it, on random occassions, it pulls to the edges of the screen. When i use my dell mouse, it is solved.

Do you have any ideas on how to solve the problem with the touchpad? Thanks for all of your help. I had a similar problem with one of 2 identical Inspiron models.

As soon as I touched any key on the keyboard, the pointer started to wander around erraticallty one one of then lets call it A for now Installing the latest Synoptics driver and disabling the pointing stick solved the problem.

The second let's call it B does not have the problem without the Synoptics driver installed. I made the test to swap the harddrives, and A instantly showed the problem when running B's drive without the Synoptics driver. The drifting problem was at its worst when my available storage shrank to below 4Gb. It may have something to do with the limited space available for the virtual memory paging file size.

At its worst, my mouse pointer just drifts to either the lower left corner or the Top Left corner, at such a fast speed that it is impossible for you to counter its direction and try to "catch" the place you want to click. At that point the only thing I could do was to use the keyboard shortcuts to reboot the system. Even after reboot, most of the time it will still drift. Once I cleared my files to create more available storage - now I have 45Gb available on my SSD, the drifting reduced, at least to a point where I can still work.

The pointer becomes "normal" most of the time, but still drifts occasionally. Even as I type this message the pointer is taking a walk on its own. Until now, I still can't find the root cause of this problem! Details required : characters remaining Cancel Submit 4 people found this reply helpful. Had the same problem.

Did something simple that fixed that and may not work for you. While the mouse is drifting, I took the battery out of the mouse and put it back. And it stopped drifting. Yesterday my mouse cursor started 'drifting' or more accurately twitching itself slowly towards the top left of my screen. It acts as if the buttons are also being randomly pressed, like it it will draw a small selection box or highlight a desktop icon on its journey. Downloaded and installed all the latest chipset drivers I could find from Asus.