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Re: System unusably slow after Debian upgrade.

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.


> 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.

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