Thanks. It doesn't sound like the problem I have. For instance, I am testing -100 again, and the first page I try to open in my browaer (vivaldi) says it's unreachable, but the suddenly is found after all.
The syslog extract below covers a short period when I tried to start a broadband speed test, and it failed to start at all saying there was no connection. I tried and again and it worked (both directions). I reraley make any sense of syslog, since it is always full of things I don't understand, including many errors and warnings that seem to have no impact on usgae of the PC. 2026-02-12T14:00:02.024427+00:00 TimPC systemd[1]: Starting update-notifier-download.service - Download data for packages that failed at package install time... 2026-02-12T14:00:02.036865+00:00 TimPC systemd[3494]: Started app-gnome-vivaldi\x2dstable-6273.scope - Application launched by gnome-shell. 2026-02-12T14:00:02.138380+00:00 TimPC systemd[1]: update-notifier-download.service: Deactivated successfully. 2026-02-12T14:00:02.138667+00:00 TimPC systemd[1]: Finished update-notifier-download.service - Download data for packages that failed at package install time. 2026-02-12T14:00:02.255244+00:00 TimPC gnome-keyring-d[3519]: asked to register item /org/freedesktop/secrets/collection/login/1, but it's already registered 2026-02-12T14:00:02.396322+00:00 TimPC systemd[3494]: Started app-com.vivaldi.Vivaldi-6273.scope. 2026-02-12T14:00:02.479966+00:00 TimPC vivaldi-stable.desktop[6279]: [6273:6355:0212/140002.479375:ERROR:chromium/crypto/nss_util.cc:346] After loading Root Certs, loaded==false: NSS error code: -8018 2026-02-12T14:00:02.537331+00:00 TimPC gnome-shell[3770]: meta_window_set_stack_position_no_sync: assertion 'window->stack_position >= 0' failed 2026-02-12T14:00:05.332627+00:00 TimPC vivaldi-stable.desktop[6279]: [6273:6309:0212/140005.332225:ERROR:chromium/google_apis/gcm/engine/registration_request.cc:291] Registration response error message: DEPRECATED_ENDPOINT 2026-02-12T14:00:06.369174+00:00 TimPC dbus-daemon[1533]: [system] Activating via systemd: service name='org.freedesktop.timedate1' unit='dbus-org.freedesktop.timedate1.service' requested by ':1.21' (uid=0 pid=1572 comm="/usr/lib/snapd/snapd" label="unconfined") 2026-02-12T14:00:06.392513+00:00 TimPC systemd[1]: Starting systemd-timedated.service - Time & Date Service... 2026-02-12T14:00:06.458712+00:00 TimPC dbus-daemon[1533]: [system] Successfully activated service 'org.freedesktop.timedate1' 2026-02-12T14:00:06.458909+00:00 TimPC systemd[1]: Started systemd-timedated.service - Time & Date Service. 2026-02-12T14:00:06.658835+00:00 TimPC snapd[1572]: autorefresh.go:645: Cannot prepare auto-refresh change: too many requests 2026-02-12T14:00:06.669409+00:00 TimPC snapd[1572]: stateengine.go:161: state ensure error: too many requests 2026-02-12T14:00:24.564762+00:00 TimPC PackageKit: daemon quit 2026-02-12T14:00:24.567800+00:00 TimPC systemd[1]: packagekit.service: Deactivated successfully. 2026-02-12T14:00:25.939650+00:00 TimPC systemd[3494]: app-com.vivaldi.Vivaldi-6273.scope: Consumed 7.560s CPU time. 2026-02-12T14:00:25.954291+00:00 TimPC systemd[3494]: Starting launchpadlib-cache-clean.service - Clean up old files in the Launchpadlib cache... 2026-02-12T14:00:25.955286+00:00 TimPC systemd[3494]: app-gnome-vivaldi\x2dstable-6273.scope: Consumed 19.462s CPU time. 2026-02-12T14:00:25.956895+00:00 TimPC systemd[3494]: Finished launchpadlib-cache-clean.service - Clean up old files in the Launchpadlib cache. 2026-02-12T14:00:28.473354+00:00 TimPC systemd[3494]: Started app-gnome-vivaldi\x2dstable-6895.scope - Application launched by gnome-shell. 2026-02-12T14:00:28.676797+00:00 TimPC gnome-keyring-d[3519]: asked to register item /org/freedesktop/secrets/collection/login/1, but it's already registered 2026-02-12T14:00:28.826355+00:00 TimPC systemd[3494]: Started app-com.vivaldi.Vivaldi-6895.scope. 2026-02-12T14:00:28.896044+00:00 TimPC vivaldi-stable.desktop[6902]: [6895:6929:0212/140028.895574:ERROR:chromium/crypto/nss_util.cc:346] After loading Root Certs, loaded==false: NSS error code: -8018 2026-02-12T14:00:28.974506+00:00 TimPC gnome-shell[3770]: meta_window_set_stack_position_no_sync: assertion 'window->stack_position >= 0' failed 2026-02-12T14:00:31.817351+00:00 TimPC vivaldi-stable.desktop[6902]: [6895:6930:0212/140031.816874:ERROR:chromium/google_apis/gcm/engine/registration_request.cc:291] Registration response error message: DEPRECATED_ENDPOINT 2026-02-12T14:00:36.478017+00:00 TimPC systemd[1]: systemd-timedated.service: Deactivated successfully. 2026-02-12T14:00:58.766616+00:00 TimPC chrome[6895]: [6895:6927:0212/140058.766158:INFO:chromium/chrome/browser/extensions/extension_garbage_collector.cc:188] Garbage collection for extensions on file thread is complete. 2026-02-12T14:01:00.283912+00:00 TimPC vivaldi-stable.desktop[6902]: [6895:6930:0212/140100.283369:ERROR:chromium/google_apis/gcm/engine/registration_request.cc:291] Registration response error message: QUOTA_EXCEEDED -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2141531 Title: Network unstable on 6.8.0-100.100 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2141531/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
