WHAT ARE THE CAUSES OF UNEXPLAINED BEHAVIOUR IN LUMION?
Unfortunately, it's quite often difficult to troubleshoot unexplained behaviour like warped polygons or spontaneous reboots. Ideally, we would need 100% identical hardware and software configurations to be able to determine what's causing the problems you're experiencing.
It would obviously be useful if we could rule out any hardware issues first. Reboots for example are typically caused by a lack of power (e.g. using a GeForce GTX 580 with a 450 Watt power supply), overheating or in a small number of cases, a faulty graphics card.
To rule out hardware issues, please run OCCT:http://www.ocbase.com/index.php/download
If your graphics card and power supply can operate without errors for a reasonable length of time, please read on.
Warped polygons can be caused by graphics card driver problems (which is often the case with Quadro and FirePro cards) or lack of onboard graphics card memory and/or lack of system memory.Driver problems can also occur if you install a new driver without uninstalling older/existing drivers first. In some cases, Windows may continue to use parts of the older driver, and parts of the new driver and the result is unexplained behaviour, spontaneous reboots and/or driver crashes.
On PCs with a single graphics card, you should never have more than 1 graphics driver installed. Any more than that and you are asking for trouble.
By now, you might already have had a look at the Uninstall or change a program
list in Windows and only found 1 installed graphics card driver, e.g. Nvidia or AMD drivers.But annoyingly enough, Windows actually keeps previous drivers for the devices that you have plugged into your PC (past and present). The reason you don't know this is that they are hidden in the Device Manager.
In the following post, I'll explain how you can determine which graphics card drivers Windows has hidden from you in the Device Manager
, and how to get rid of them.