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Clean install of SMP Debian 4.9.30-2+deb9u2 (2017-06-26) x86_64 GNU/Linux on an HP G62-144DX with 4G of memory, 500G HD and Intel® Core™ i3 CPU M 330 @ 2.13GHz × 4 Everything working fine. I had updated the apt repository a couple of times to make sure there were no updates so I know it was working before I tried to add non-free.

After choosing "DFSG-compatible Softeare with Non-Free Dependencies (contrib)" in synaptic apt became "unhappy." I have tried looking for answers but am either in the wrong places or it's just me (i.e. Murphy's law).

When apt-get update is called I get the following:

# apt update
Ign:1 http://ftp.us.debian.org/debian stretch InRelease
Hit:2 http://ftp.us.debian.org/debian stretch-updates InRelease
Hit:3 http://ftp.us.debian.org/debian stretch Release                          
Err:2 http://ftp.us.debian.org/debian stretch-updates InRelease                
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010
Hit:4 http://security.debian.org/debian-security stretch/updates InRelease     
Err:5 http://ftp.us.debian.org/debian stretch Release.gpg                      
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010 NO_PUBKEY CBF8D6FD518E17E1 NO_PUBKEY EF0F382A1A7B6500
Err:4 http://security.debian.org/debian-security stretch/updates InRelease
  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9D6D8F6BC857C906 NO_PUBKEY 8B48AD6246925553
Reading package lists... Done
Building dependency tree       
Reading state information... Done
All packages are up to date.
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ftp.us.debian.org/debian stretch-updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://ftp.us.debian.org/debian stretch Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010 NO_PUBKEY CBF8D6FD518E17E1 NO_PUBKEY EF0F382A1A7B6500
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://security.debian.org/debian-security stretch/updates InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9D6D8F6BC857C906 NO_PUBKEY 8B48AD6246925553
W: Failed to fetch http://security.debian.org/debian-security/dists/stretch/updates/InRelease  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 9D6D8F6BC857C906 NO_PUBKEY 8B48AD6246925553
W: Failed to fetch http://ftp.us.debian.org/debian/dists/stretch-updates/InRelease  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010
W: Failed to fetch http://ftp.us.debian.org/debian/dists/stretch/Release.gpg  The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553 NO_PUBKEY 7638D0442B90D010 NO_PUBKEY CBF8D6FD518E17E1 NO_PUBKEY EF0F382A1A7B6500
W: Some index files failed to download. They have been ignored, or old ones used instead.

I tried going back by unchecking the option in Synaptic and by copying sources.list.saved to sources.list with no luck.
As far as I can tell apt-key has all the keys that update is griping about. Here are the relavent outputs I can think of:

Sources.list after the fall:

# 

# deb cdrom:[Debian GNU/Linux 9.0.0 _Stretch_ - Official amd64 NETINST 20170617-13:06]/ stretch main

# deb cdrom:[Debian GNU/Linux 9.0.0 _Stretch_ - Official amd64 NETINST 20170617-13:06]/ stretch main

deb http://ftp.us.debian.org/debian/ stretch main contrib
deb-src http://ftp.us.debian.org/debian/ stretch main contrib

deb http://security.debian.org/debian-security stretch/updates main contrib
deb-src http://security.debian.org/debian-security stretch/updates main contrib

# stretch-updates, previously known as 'volatile'
deb http://ftp.us.debian.org/debian/ stretch-updates main contrib
deb-src http://ftp.us.debian.org/debian/ stretch-updates main contrib

apt-key list:

# apt-key list
/etc/apt/trusted.gpg.d/debian-archive-jessie-automatic.gpg
----------------------------------------------------------
pub   rsa4096 2014-11-21 [SC] [expires: 2022-11-19]
      126C 0D24 BD8A 2942 CC7D  F8AC 7638 D044 2B90 D010
uid           [ unknown] Debian Archive Automatic Signing Key (8/jessie) <[email protected]>

/etc/apt/trusted.gpg.d/debian-archive-jessie-security-automatic.gpg
-------------------------------------------------------------------
pub   rsa4096 2014-11-21 [SC] [expires: 2022-11-19]
      D211 6914 1CEC D440 F2EB  8DDA 9D6D 8F6B C857 C906
uid           [ unknown] Debian Security Archive Automatic Signing Key (8/jessie) <[email protected]>

/etc/apt/trusted.gpg.d/debian-archive-jessie-stable.gpg
-------------------------------------------------------
pub   rsa4096 2013-08-17 [SC] [expires: 2021-08-15]
      75DD C3C4 A499 F1A1 8CB5  F3C8 CBF8 D6FD 518E 17E1
uid           [ unknown] Jessie Stable Release Key <[email protected]>

/etc/apt/trusted.gpg.d/debian-archive-stretch-automatic.gpg
-----------------------------------------------------------
pub   rsa4096 2017-05-22 [SC] [expires: 2025-05-20]
      E1CF 20DD FFE4 B89E 8026  58F1 E0B1 1894 F66A EC98
uid           [ unknown] Debian Archive Automatic Signing Key (9/stretch) <[email protected]>
sub   rsa4096 2017-05-22 [S] [expires: 2025-05-20]

/etc/apt/trusted.gpg.d/debian-archive-stretch-security-automatic.gpg
--------------------------------------------------------------------
pub   rsa4096 2017-05-22 [SC] [expires: 2025-05-20]
      6ED6 F5CB 5FA6 FB2F 460A  E88E EDA0 D238 8AE2 2BA9
uid           [ unknown] Debian Security Archive Automatic Signing Key (9/stretch) <[email protected]>
sub   rsa4096 2017-05-22 [S] [expires: 2025-05-20]

/etc/apt/trusted.gpg.d/debian-archive-stretch-stable.gpg
--------------------------------------------------------
pub   rsa4096 2017-05-20 [SC] [expires: 2025-05-18]
      067E 3C45 6BAE 240A CEE8  8F6F EF0F 382A 1A7B 6500
uid           [ unknown] Debian Stable Release Key (9/stretch) <[email protected]>

/etc/apt/trusted.gpg.d/debian-archive-wheezy-automatic.gpg
----------------------------------------------------------
pub   rsa4096 2012-04-27 [SC] [expires: 2020-04-25]
      A1BD 8E9D 78F7 FE5C 3E65  D8AF 8B48 AD62 4692 5553
uid           [ unknown] Debian Archive Automatic Signing Key (7.0/wheezy) <[email protected]>

/etc/apt/trusted.gpg.d/debian-archive-wheezy-stable.gpg
-------------------------------------------------------
pub   rsa4096 2012-05-08 [SC] [expires: 2019-05-07]
      ED6D 6527 1AAC F0FF 15D1  2303 6FB2 A1C2 65FF B764
uid           [ unknown] Wheezy Stable Release Key <[email protected]>

So if I am reading this right apt has all the keys it needs to recognize the distro but refuses to do so.
Can someone tell me what I am missing? I have little hair left and ripping it out a handful at a time has not helped either to answer the question or to improve my appearance.

Added df -h per request

$ df -h
Filesystem      Size  Used Avail Use% Mounted on
udev            1.9G     0  1.9G   0% /dev
tmpfs           376M  6.2M  370M   2% /run
/dev/sda1        92G  6.8G   80G   8% /
tmpfs           1.9G   12K  1.9G   1% /dev/shm
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
tmpfs           1.9G     0  1.9G   0% /sys/fs/cgroup
/dev/sda6        19G  3.1G   15G  18% /home
/dev/sda7       341G   82G  242G  26% /store
tmpfs           376M   16K  376M   1% /run/user/119
tmpfs           376M   44K  376M   1% /run/user/1000
/dev/sdb2      1008G   71G  887G   8% /media/mhenwood/1T Files
/dev/sdb3       839G   68G  771G   9% /media/mhenwood/MS_STORE
/dev/sr0         11M   11M     0 100% /media/cdrom0

Are you looking for anything besides a full disk? - just curious

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  • Please add to the question the output of df -h Jul 18, 2017 at 17:51

1 Answer 1

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Same issue on my brand new debian 9 installed with the release installer. The issue disappeared after getting the trusted.gpg file out of the way :

sudo mv trusted.gpg trusted.gpg-broken

Afterwards apt seems to be happy. So am I !

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  • Yep, the only thing left is validating the skype key and that's not Debian's problem. But how do I report this to Debian, it seems like kind of a big deal especially as they are moving to a more secure system.
    – Mark
    Jul 19, 2017 at 21:39

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