Restore graphics configuration in Debian

Context I have a Debian Trixie (13) installation that I've been upgrading since many stable versions ago, and from laptop to laptop. And I do not want to reinstall or switch OS. However, some months ago, some apps started to freeze and I traced it down to usage of the graphic card. It is an integrated Intel one. Hints The simplest proof of this is that glxgears shows only a black window. I…

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