I recently did apt-get dist-upgrade on an amd64 unstable installation, after many months of disuse. It seemed to upgrade every package, so I expected some issue could crop up. Indeed, after rebooting, attempting to log in to Gnome or Cinnamon graphically using gdm3 (as before) dumps the session, returning to the gdm3 screen. I'm able to log into Gnome Classic, and programs load normally, but the network does not resolve the ethernet connection. (Probably a separate issue.) None of these problems exist on the stable (Stretch) installation. It's worth noting that this particular machine is about 10.5 years old, and some components may be experiencing failure. For instance, I have been getting
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usb 2-3: device descriptor read/64, error -62
for some time now.
When I look at the tail of dmesg, I get a line like the following:
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[ 946.853205] pool[1275]: segfault at 8 ip 00007f8008f96676 sp 00007f7fef7fd978 error 4 in libc-2.24.so[7f8008f16000+193000]
One such line appears for every attempt to log in, and nothing else. After googling, I am still at a loss what pool is; I used locate, it apparently is not a binary, but some thread. Perhaps I need to reconfigure a package, any hint on how to debug this issue?
Thanks