• Wiki Debian NVIDIA Optimus

• Wiki Debian NVIDIA Proprietary Driver
  sur T420:
  Checking card: NVIDIA Corporation GF119M [Quadro NVS 4200M] (rev a1) Your card is only supported by the 390 legacy drivers series, which is only available up to bullseye.

• Wiki Debian, driver Nvidia, avec Bumblebee

• Freedesktop, Optimus avec driver Nouveau

• ArchWiki, Bumblebee et Prime / Optimus

Carte T420, PCI ID 10de:1057 Quadro 4200M

• Nvidia legacy drivers
• Support timeframes for Unix legacy GPU releases
• EOL Windows driver support for legacy products
• NVIDIA Accelerated Linux Graphics Driver README and Installation Guide - 390.157

• URL d'autoconfig: https://example.com/.well-known/autoconfig/mail/config-v1.1.xml
  et format du fichier xml
• doc mozilla https://wiki.mozilla.org/Thunderbird:Autoconfiguration:ConfigFileFormat
• autre source (et URL) https://www.arobase.org/email-pro/autoconfiguration-mail-pour-un-nom-de-domaine.htm
• idem https://philippe.scoffoni.net/comment-auto-configuration-comptes-messagerie-thunderbird-autres/
• bon résumé https://www.canaletto.fr/post/autodiscover-and-autoconfig-imap-smtp
• via DNS https://wiki.mozilla.org/Thunderbird:Autoconfiguration:DNSBasedLookup