[arch-general] No login after update

[Manuel Reimer]

On 21.08.20 22:09, Morten Linderud via arch-general wrote:
>> There are more ".pacnew" in my /etc. All for files that I never touched
>> myself.
> 
> That is concerning, but it is simply something touching those files you are
> unaware of. It's however you system and it's expected that you are aware of what
> does this.

I don't know what this could be. What exactly is compared? File 
timestamps? Checksums? How to debug this?

For example I have a /etc/ppp/ip-up.d/00-dns.sh.pacnew

I for sure never edited this. I don't care about ppp at all. This 
package came as dependency of something else (maybe NetworkManger).

A diff between the actuall file and its ".pacnew":


$ diff -U 8 -p 00-dns.sh 00-dns.sh.pacnew
--- 00-dns.sh	2013-05-30 19:35:30.000000000 +0200
+++ 00-dns.sh.pacnew	2020-02-20 22:37:04.000000000 +0100
@@ -1,7 +1,11 @@
  #!/bin/sh

  if [ "$USEPEERDNS" = "1" -a -f /etc/ppp/resolv.conf ]; then
-  [ -e /etc/resolv.conf ] && mv /etc/resolv.conf 
/etc/resolv.conf.backup.${IFNAME}
-  mv /etc/ppp/resolv.conf /etc/resolv.conf
-  chmod 644 /etc/resolv.conf
+  if [ -x /usr/bin/resolvconf ]; then
+    /usr/bin/resolvconf -a ${IFNAME} </etc/ppp/resolv.conf
+  else
+    [ -e /etc/resolv.conf ] && mv /etc/resolv.conf 
/etc/resolv.conf.backup.${IFNAME}
+    mv /etc/ppp/resolv.conf /etc/resolv.conf
+    chmod 644 /etc/resolv.conf
+  fi
  fi


>> I guess there is something wrong with the way how pacman decides when to move
>> ".pacnew" into place directly.
> 
> There isn't. Peopel with `.pacnew` has modified their files, wittingly or not.

For sure not. I guess it somehow also depends on how they are compared.

At some point in the past I replaced my HDD with an SSD and as far as I 
remember I copied over the system. Could this have caused the way how 
pacman decides when to move ".pacnew" into place somehow?

I may also have deleted the whole /var/cache/pacman/pkg at some point in 
the past to save space. Is this where pacman checks for "old files"?

Manuel