@mwt repo apt update error: NO_PUBKEY 7FC979028B1997C1 #1267

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1. github-actions

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   on Sep 11, 2025
2. mwt commented on Sep 11, 2025

   

   mwt

   on Sep 11, 2025

   Last edited by mwt

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   Could you try looking at /usr/share/keyrings/mwt-desktop.gpg and see that the file is present and looks like a real gpg key?

   Edit: if you can't get that to work, could you try

   sudo rm '/etc/apt/sources.list.d/mwt-desktop.list' '/usr/share/keyrings/mwt-desktop.gpg'
   wget -qO- 'https://mirror.mwt.me/shiftkey-desktop/install.sh' | sudo -s
3. 0nobody0 commented on Sep 11, 2025

   

   0nobody0

   on Sep 11, 2025

   Last edited by 0nobody0

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   thanks for the mirror and the quick reply!

   sudo cat /usr/share/keyrings/mwt-desktop.gpg:

   �3c�e�	+�G@V�[�4�(�p�a��J큲+�ȥ��vz��/S�-Brendan Forster <packages@brendanforster.com>��
   >!N�V���
   H�y���c�e�		�
                            	
   	
          �
   	�y������(s��k� /N6�ٻ�~O	���*o�!��	{
                                                    !s�S,E��K-N�:��D���ꗰoﻀi+/�8c�e�
   +�U@V�" L����Ԗ!��iR	.�6���Ƀ���~
   &!N�V���
   H�y���c�e�
             		�
   	�y���Ǣ�k�p��M������
                              B�gd`������4{��f�Et
   �;	N0���l��]g�;$g,�u�%�d
   

   sudo cat /usr/share/keyrings/mwt-desktop.gpg | gpg --with-colons --import-options show-only --import:

   pub:-:255:22:7FC979028B1997C1:1676830120:1834510120::-:::scESC:::::ed25519:::0:
   fpr:::::::::4E02A356A18314B00A481F067FC979028B1997C1:
   uid:-::::1676830120::610BC0739A460FB6744ED2B8E6182543C30251ED::Brendan Forster <packages@brendanforster.com>::::::::::0:
   sub:-:255:18:DE58E9B416EB1F95:1676830120:1834510120:::::e:::::cv25519::
   fpr:::::::::1129443175FCDCFFC0008F3EDE58E9B416EB1F95:
   

   i also checked that wget -qO - https://mirror.mwt.me/shiftkey-desktop/gpgkey returns the expected key before being piped to gpg --dearmor:

   -----BEGIN PGP PUBLIC KEY BLOCK-----
   
   mDMEY/JlqBYJKwYBBAHaRw8BAQdAVplbujSODiiIcIxhg+xK7YGyK4nIpY/ZdnqL
   yi8SHVO0LUJyZW5kYW4gRm9yc3RlciA8cGFja2FnZXNAYnJlbmRhbmZvcnN0ZXIu
   Y29tPoiWBBMWCgA+FiEETgKjVqGDFLAKSB8Gf8l5AosZl8EFAmPyZagCGwMFCQlm
   AYAFCwkIBwMFFQoJCAsFFgMCAQACHgECF4AACgkQf8l5AosZl8EbYAEAouvPKHOb
   zmvBIC9ONp3Zu69+Tx8JoKrfKm+zIfuTCXsBAMKEIXP9UyxF191LLU7aOrXVRJ2y
   8uqXsG/vu4BpKy8DuDgEY/JlqBIKKwYBBAGXVQEFAQEHQFbHIiBMgeWt9/3UlhAE
   IZS+aVIRCS73Nr+Io8mDjZUkAwEIB4h+BBgWCgAmFiEETgKjVqGDFLAKSB8Gf8l5
   AosZl8EFAmPyZagCGwwFCQlmAYAACgkQf8l5AosZl8HHogEArWvwl3DRFr9NiPL1
   wv/zC0KaZ2Rg0heEwACmGtg0e9cBAJhm7kV0Cvg7CU4w8sfabNXiXWelOyRnLPR1
   pX8lwGQE
   =Hv1H
   -----END PGP PUBLIC KEY BLOCK-----
   

   i ran

   sudo rm '/etc/apt/sources.list.d/mwt-desktop.list' '/usr/share/keyrings/mwt-desktop.gpg'
   wget -qO- 'https://mirror.mwt.me/shiftkey-desktop/install.sh' | sudo -s
   

   and verified that /etc/apt/sources.list.d/shiftkey-desktop.list and /etc/apt/keyrings/shiftkey-desktop.asc were created. sudo apt update now returns:

   Err:1 https://mirror.mwt.me/shiftkey-desktop/deb any InRelease                                                               
     Unknown error executing apt-key
   ...
   W: GPG error: https://mirror.mwt.me/shiftkey-desktop/deb any InRelease: Unknown error executing apt-key
   E: The repository 'https://mirror.mwt.me/shiftkey-desktop/deb any InRelease' is not signed.
   N: Updating from such a repository can't be done securely, and is therefore disabled by default.
   N: See apt-secure(8) manpage for repository creation and user configuration details.
   

   Edit: Added sudo cat /usr/share/keyrings/mwt-desktop.gpg | gpg --with-colons --import-options show-only --import above.
4. mwt commented on Sep 11, 2025

   

   mwt

   on Sep 11, 2025

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   Strange. I'm running the same version of Ubuntu and it is signed for me. The InRelease file that it's saying isn't signed is the following:

   https://mirror.mwt.me/shiftkey-desktop/deb/dists/any/InRelease

   Which is definitely signed. Is this file maybe blocked for you? What happens if you curl it?
5. 0nobody0 commented on Sep 11, 2025

   

   0nobody0

   on Sep 11, 2025

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   pardon the confusion - user error. somehow umask was set to 077 which resulted in the keyfile having the wrong permissions:

   -rw------- 1 root root  438 Sep 11 11:02 mwt-desktop.gpg
   

   sudo apt update works fine after fixing the permissions with sudo chmod 644 /usr/share/mwt-desktop.gpg:

   -rw-r--r-- 1 root root  438 Sep 11 11:02 mwt-desktop.gpg
   
6. 0nobody0

   closed this as completedon Sep 11, 2025
7. github-actions

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8. mwt commented on Sep 11, 2025

   

   mwt

   on Sep 11, 2025

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   Interesting. I guess apt doesn't use root when reading the key. I didn't know that.