On Fri, 17 Dec 2021 19:51:28 -0700, Alex Henrie wrote: > The BIOS appears to access the SMBus during the first few minutes after > boot, and then it stops using it. So "safe" may not be the right word, > but in my case, it seems to work OK to use the SMBus as long as the > uptime is greater than a few minutes. This is a fairly uncommon pattern. Do you have an idea, which device and registers the BIOS is accessing? Did you try tracing it? -- Jean Delvare SUSE L3 Support