Created attachment 144635 [details]
vbios.rom

As of stable kernels 5.1.8 and 4.19.49, the GTX 260 fan runs at full speed
after resuming from suspend.

This behavior regressed as of commit 342406e4fbba9a174125fbfe6aeac3d64ef90f76
drm/nouveau/i2c: Disable i2c bus access after ->fini()
https://lkml.org/lkml/2019/6/7/673

Reverting this single commit when building the respective stable kernels fixes
the fan speed issue.

$ lspci -nn -d 10de:
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GT200 [GeForce GTX
260] [10de:05e2] (rev a1)

Discussion on Nouveau mailing list:
https://lists.freedesktop.org/archives/nouveau/2019-June/032620.html