Hi,
I have an Optiplex 780 SFF desktop, and I have kept the BIOS firmware up to date, now running A14.
It's running a Q9550 CPU. Win7 64.
Ever since owning, I have noticed an issue with the CPU fan control. After the computer resumes from S3 Sleep, the fan controller logic seems broken in a bad way. Only after S3 resume, if I run 100% CPU for an extended period (possibly a few minutes), the fan does not spin up to adequate rpm and the CPU gets very hot, > 90 degrees.
However, after a normal warm restart of the computer, the issue goes away. The CPU fan speeds up properly and keeps the CPU from overheating - highest core temp around 72.
The cooling issue only appears only after resume, not boot.
Anyone able to test this?
thanks!
