Bob Crochelt composed on 2022-01-26 17:25 (UTC-0800): > inxi output attached.
Your iMac's BIOS date is about a month earlier than mine. Likely the only difference between ours is you have G92M [GeForce 8800M GTS] while I have RV630/M76 [Mobility Radeon HD 2600 XT/2700]. If yours is anything like mine, it generates a lot of heat. Has yours ever had an internal cleaning? It may need its heat sink compound on CPU and/or GPU replaced. System freezes are a common symptom of overheating. Also, RAM is subject to failure with age and overheating. Have you tried running memtest86? -- Evolution as taught in public schools is, like religion, based on faith, not based on science. Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata