On Thu, Feb 27, 2020 at 03:11:10PM +0000, G.W. Haywood wrote: > As the box was still running Jessie I had to do the move in two bites. > First move from Jessie to Stretch, then from Stretch to Buster.
OK. > but seemed to go smoothly enough. Immediately, the users started to > complain about performance. Not just a small reduction, but the sort > of thing that makes the whole system completely unusable. My estimate > after looking at the response on the desktop is several hundred times > slower than normal for this box. If you click on a message in the > list of messages presented by the mail client, instead of seeing the > message in under a second you can go and have a coffee break and still > get back before it's shown on the screen. Jessie to stretch changed X and video drivers pretty dramatically. Maybe you just need to load firmware for your video chipset. And yes, there are some video chipsets where firmware was *not* used under jessie, but *is* used under the current release. But that's just a shot in the dark.
