INTL 3:770/1 3:770/3
REPLYADDR news@druck.org.uk
REPLYTO 3:770/3.0 UUCP
MSGID:  5d671b31
REPLY:  6743c289
PID: SoupGate-Win32 v1.05
On 28/10/2024 18:54, bp@www.zefox.net wrote:
> At that point the Pi5 appears to start scanning 5 GHz access points,
> despite being told otherwise in /etc/NetworkManager/NetworkManager.conf .
> That looks to me like a software problem.

This is why I wasn't happy about Raspbian moving from dhcpcd to Network
Manager. Quite often my Linux Laptops which use Network Manager decide
they would like to try WiFi networks other than the one I've chosen,
that's easily fixed via the gui, but not what you want on headless systems.

You could try disabling the NetworkManager service, and reinstalling
dhcpcd so the WiFi is only selected by the contents of the
wpa_supplicant.conf file. It worked fine for everything before Bookworm.

---druck

--- SoupGate-Win32 v1.05
 * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)
SEEN-BY: 19/38 90/1 105/81 106/201 128/187 129/305 153/757 7715 218/700
SEEN-BY: 218/840 220/70 226/17 30 100 227/114 229/110 111 114 200
SEEN-BY: 229/206 300 317 400 426 428 470 550 616 664 700 266/512 267/800
SEEN-BY: 282/1038 291/111 292/854 310/31 320/219 322/757 342/200 396/45
SEEN-BY: 460/58 633/280 281 412 418 420 509 2744 712/848 770/1 3 100
SEEN-BY: 770/330 340 772/210 220 230 5020/400 5075/35
PATH: 770/3 1 633/280 229/426