On Thu 14 Jul 2022, at 01:03, Ram Ramesh <rramesh2...@gmail.com> wrote: [...] > I take back some of what I said. It is both - I mean usb > autosupend+avahi_daemon. I need to keep the adaptor from autosuspending > and tell avahi-daemon not to disable the interface in the OS. > > I also found the power/control entry in /sys/bus/usb/.... for my usb > NIC. It is not in the usual place. lsusb does not list my usb ethernet > adapter at all. I had to manually search to find it and set its > power/control to "on" > > With all this done, so far my net is up and running fine. Will wait a > couple days with a couple of reboots to make sure I have captured all > fixes in some boot scripts. After that this problem can be thought of as > solved.
Hi Ramesh, There are numerous reports (mostly old, afaics) of the issue you describe, but with various suggested reasons. I suspect the avahi related part is a consequence rather than a cause - I didn't think avahi was capable of disabling interfaces, the message looks like it's updating a table/list (etc) and "...no longer relevant..." messages appear in my syslog if I deliberately disconnect from wifi. Please can you provide syslog extracts from just before and during a time when this has happened, using: $ sudo cat /var/log/syslog | grep -i -E "avahi|network" (must be capital -E and no spaces around the | inside the speech marks) Is there anything that seems relevant in $ sudo dmesg -T ? Out of interest, did you try running for a while with just the power management tweak? Thanks, Gareth
