bug#48103: 28.0.50; tls connection failing on invoking package-list-packages (and other operations)

[wilde]

Lars Ingebrigtsen <larsi@gnus.org> wrote:
> wilde@sha-bang.de writes:
>
>> gnutls.c: [1] (Emacs) non-fatal error: Resource temporarily unavailable, try 
>> again. [5 times]
>> error in process sentinel: Error retrieving:
>> https://elpa.nongnu.org/nongnu/archive-contents (error
>> connection-failed "connect" :host "elpa.nongnu.org" :service 443) [2
>> times]
>
> [...]
>
>> I am running emacs on a rather slow [Intel(R) Atom(TM) CPU N270 @
>> 1.60GHz] NetBSD 9.1 system.

Hi *,

It turns out that setting 'gnutls-algorithm-priority to
"normal:-vers-tls1.3" fixes the problem for me:
  (setq gnutls-algorithm-priority "normal:-vers-tls1.3")


The question that still remains is: why is this customization necessary?
And why is it only necessary on this NetBSD system but on none of my
GNU/Linux systems?

FWIW: 
  gnutls-cli elpa.nongnu.org 443
on the NetBSD system connects without any issues...