Hi Tony! On 5/13/22 01:11, to...@suse.de wrote: > Right now it's running 3.0 Linux kernel. It's overheating. It will > boot into X11 and remain up pretty much indefinitely if the load > average remains under 1.5. If I start Firefox I'll get a spike > (log warnings from Windfarm that the temp is "overtemp" followed by > it returning to normal). If I really load the machine (run a prime > factoring load test) i'll get a "critical" warning from Windfarm > followed by an immediate power off.
There have been quite a lot of PowerPC- and G5-related fixes in newer kernels as compared to 3.0, so I would suggest using a more recent version. Do you know that we have current Debian unstable images for 32- and 64-bit PowerPC available? > https://cdimage.debian.org/cdimage/ports/snapshots/2022-03-28/ > Overheating is common and I'm aware of the process to try to fix it > but my concern is that the machine has also become totally unstable > in Open Firmware (OF). > > Initially OF was stable but I noticed that the machine had stopped > chiming at power on and in the course of trying the various fixes for > this OF has become totally unstable. > (...) > I've tested the RAM (4 sticks of PC2-4200) in a PC with MemTestx86+ > and they are fine. I've also tried swapping in different RAM. > > I've tried all of the usual fixes, remove CMOS battery, power off > for a day, clear NVRAM, boot holding down power key to go thru > programmers tone into OF. This dinking is what made it worse :) Sounds like bad capacitors [1] to me. Have you checked for any suspiciously looking capacitors on the mainboard? Adrian PS: We're colleagues, I also work at SUSE ;). > [1] https://en.wikipedia.org/wiki/Capacitor_plague -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
