Amiga 1200 disappearing/garbage mouse pointer A1200

[tbtorro]

Has anyone seen an issue on A1200 when the mouse pointer goes AWOL? Both buttons work, pointer moves, but it's not there - or in other words invisible. Sometimes I see a pointer shadow as garbage artifact moving in a column on the left side - SOMETIMES - but mostly it's just missing..

So I assume it's something to do with drawing and updating the hw. sprite, as opposed to mouse control. Could swap out LISA thought first check in if someone has seen it and maybe some TTL component fault could cause this. The board is super clean (no corrosion).

This behavior is consistent, same in even early startup with nothing plugged in but video and mouse.

Driving me nuts..

[tbtorro]

Some knows better but once was a slightly broken cord, another time just software.

Tried with the Tac-2 to see if not another mouse to test. Just circle around..

Edit: Re-read, really that could be fustrating. Could just try another miga criss cross Sorry no idea if not in connection.

PR

Thanks but can't be software as it's the same with early boot (both button held down), and tried with other mouse already - but can't be that as I said the (invisible) pointer moves and it's possible to click on things.

[tbtorro]

A virus or a crashed program can cause this, not in early startup though :-/

It's the same in early start..

[tbtorro]

Just some old thread found.

http://www.lemonamiga.com/forum/viewtopic.php?t=11428&sid=07374688cd35439be1791ae893723558

Thanks I've seen that already, but his problem is different. He has no mouse movement. As I said in this case the mouse WORKS (possible to move and click with both left and right button) BUT there is NO pointer shown, or sometimes some ghost artifacts on left side.