[root@mimas apt]# apt search amd-graphics
Sorting... Done
Full Text Search... Done
firmware-amd-graphics/stable 20230210-5 all
  Binary firmware for AMD/ATI graphics chips

[root@mimas apt]# apt update
Ign:1 https://deb.devuan.org/merged daedalus InRelease
Ign:2 https://deb.devuan.org/merged daedalus-updates InRelease
Ign:3 https://deb.devuan.org/merged daedalus-security InRelease
Ign:1 https://deb.devuan.org/merged daedalus InRelease
Ign:2 https://deb.devuan.org/merged daedalus-updates InRelease
Ign:3 https://deb.devuan.org/merged daedalus-security InRelease
Ign:1 https://deb.devuan.org/merged daedalus InRelease
Ign:2 https://deb.devuan.org/merged daedalus-updates InRelease
Ign:3 https://deb.devuan.org/merged daedalus-security InRelease
Err:1 https://deb.devuan.org/merged daedalus InRelease
  Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 198.58.118.8 443]
Err:2 https://deb.devuan.org/merged daedalus-updates InRelease
  Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 198.58.118.8 443]
Err:3 https://deb.devuan.org/merged daedalus-security InRelease
  Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 198.58.118.8 443]
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
345 packages can be upgraded. Run 'apt list --upgradable' to see them.
W: Failed to fetch https://deb.devuan.org/merged/dists/daedalus/InRelease  Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 198.58.118.8 443]
W: Failed to fetch https://deb.devuan.org/merged/dists/dae … /InRelease  Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 198.58.118.8 443]
W: Failed to fetch https://deb.devuan.org/merged/dists/dae … /InRelease  Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 198.58.118.8 443]
W: Some index files failed to download. They have been ignored, or old ones used instead.
[root@mimas apt]# apt info amd-graphics
N: Unable to locate package amd-graphics
N: Unable to locate package amd-graphics
E: No packages found

[root@mimas apt]# apt install firmware-amd-graphics/stable
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Selected version '20230210-5' (Devuan:5.0/stable [all]) for 'firmware-amd-graphics'
The following NEW packages will be installed:
  firmware-amd-graphics
0 upgraded, 1 newly installed, 0 to remove and 345 not upgraded.
Need to get 11.9 MB of archives.
After this operation, 82.6 MB of additional disk space will be used.
Ign:1 https://deb.devuan.org/merged daedalus/non-free-firmware amd64 firmware-amd-graphics all 20230210-5
Ign:1 https://deb.devuan.org/merged daedalus/non-free-firmware amd64 firmware-amd-graphics all 20230210-5
Ign:1 https://deb.devuan.org/merged daedalus/non-free-firmware amd64 firmware-amd-graphics all 20230210-5
Err:1 https://deb.devuan.org/merged daedalus/non-free-firmware amd64 firmware-amd-graphics all 20230210-5
  Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 23.169.200.138 443]
E: Failed to fetch https://deb.devuan.org/merged/pool/DEBI … -5_all.deb  Certificate verification failed: The certificate is NOT trusted. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 23.169.200.138 443]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?