i am facing same colord dependency problem in ubuntu 20.04 on the way of installing gnome control center i tried the same solution which is mentioned above "sudo apt-get install libsane1/bionic libsane-common/bionic sane-utils/bionic" i got this: Reading package lists... Done Building dependency tree Reading state information... Done E: Release 'bionic' for 'libsane1' was not found E: Release 'bionic' for 'libsane-common' was not found E: Release 'bionic' for 'sane-utils' was not found so i replaced bionic with focal: "sudo apt-get install libsane1/focal libsane-common/focal sane-utils/focal" and it returned the given: Reading package lists... Done Building dependency tree Reading state information... Done Selected version '1.0.29-0ubuntu5' (Ubuntu:20.04/focal [amd64]) for 'libsane1' Selected version '1.0.29-0ubuntu5' (Ubuntu:20.04/focal [amd64]) for 'libsane' because of 'libsane1' Selected version '5.8+dfsg-2ubuntu2' (Ubuntu:20.04/focal [amd64]) for 'libsnmp35' because of 'libsane' Selected version '1.0.29-0ubuntu5' (Ubuntu:20.04/focal [amd64]) for 'sane-utils' because of 'libsane' Selected version '1.0.29-0ubuntu5' (Ubuntu:20.04/focal [all]) for 'libsane-common' Selected version '1.0.29-0ubuntu5' (Ubuntu:20.04/focal [amd64]) for 'sane-utils' The following additional packages will be installed: libmysqlclient21 libsane libsnmp35 Suggested packages: hplip unpaper The following NEW packages will be installed: libmysqlclient21 libsane libsane1 libsnmp35 sane-utils The following packages will be DOWNGRADED: libsane-common 0 upgraded, 5 newly installed, 1 downgraded, 0 to remove and 0 not upgraded. Need to get 5,095 kB of archives. After this operation, 24.7 MB of additional disk space will be used. Do you want to continue? [Y/n] y Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane-common all 1.0.29-0ubuntu5 [277 kB] Get:2 http://archive.ubuntu.com/ubuntu focal/main amd64 libmysqlclient21 amd64 8.0.19-0ubuntu5 [1,218 kB] Get:3 http://archive.ubuntu.com/ubuntu focal/main amd64 libsnmp35 amd64 5.8+dfsg-2ubuntu2 [981 kB] Get:4 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane amd64 1.0.29-0ubuntu5 [2,404 kB] Get:5 http://archive.ubuntu.com/ubuntu focal/universe amd64 libsane1 amd64 1.0.29-0ubuntu5 [14.2 kB] Get:6 http://archive.ubuntu.com/ubuntu focal/main amd64 sane-utils amd64 1.0.29-0ubuntu5 [201 kB] Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane-common all 1.0.29-0ubuntu5 [277 kB] Get:2 http://archive.ubuntu.com/ubuntu focal/main amd64 libmysqlclient21 amd64 8.0.19-0ubuntu5 [1,218 kB] Get:3 http://archive.ubuntu.com/ubuntu focal/main amd64 libsnmp35 amd64 5.8+dfsg-2ubuntu2 [981 kB] Get:4 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane amd64 1.0.29-0ubuntu5 [2,404 kB] Get:5 http://archive.ubuntu.com/ubuntu focal/universe amd64 libsane1 amd64 1.0.29-0ubuntu5 [14.2 kB] Get:6 http://archive.ubuntu.com/ubuntu focal/main amd64 sane-utils amd64 1.0.29-0ubuntu5 [201 kB] Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane-common all 1.0.29-0ubuntu5 [277 kB] Get:2 http://archive.ubuntu.com/ubuntu focal/main amd64 libmysqlclient21 amd64 8.0.19-0ubuntu5 [1,218 kB] Get:3 http://archive.ubuntu.com/ubuntu focal/main amd64 libsnmp35 amd64 5.8+dfsg-2ubuntu2 [981 kB] Get:4 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane amd64 1.0.29-0ubuntu5 [2,404 kB] Get:5 http://archive.ubuntu.com/ubuntu focal/universe amd64 libsane1 amd64 1.0.29-0ubuntu5 [14.2 kB] Get:6 http://archive.ubuntu.com/ubuntu focal/main amd64 sane-utils amd64 1.0.29-0ubuntu5 [201 kB] Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane-common all 1.0.29-0ubuntu5 [277 kB] Get:2 http://archive.ubuntu.com/ubuntu focal/main amd64 libmysqlclient21 amd64 8.0.19-0ubuntu5 [1,218 kB] Get:3 http://archive.ubuntu.com/ubuntu focal/main amd64 libsnmp35 amd64 5.8+dfsg-2ubuntu2 [981 kB] Get:4 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane amd64 1.0.29-0ubuntu5 [2,404 kB] Get:5 http://archive.ubuntu.com/ubuntu focal/universe amd64 libsane1 amd64 1.0.29-0ubuntu5 [14.2 kB] Get:6 http://archive.ubuntu.com/ubuntu focal/main amd64 sane-utils amd64 1.0.29-0ubuntu5 [201 kB] Get:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane-common all 1.0.29-0ubuntu5 [277 kB] Get:2 http://archive.ubuntu.com/ubuntu focal/main amd64 libmysqlclient21 amd64 8.0.19-0ubuntu5 [1,218 kB] Get:3 http://archive.ubuntu.com/ubuntu focal/main amd64 libsnmp35 amd64 5.8+dfsg-2ubuntu2 [981 kB] Get:4 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane amd64 1.0.29-0ubuntu5 [2,404 kB] Get:5 http://archive.ubuntu.com/ubuntu focal/universe amd64 libsane1 amd64 1.0.29-0ubuntu5 [14.2 kB] Get:6 http://archive.ubuntu.com/ubuntu focal/main amd64 sane-utils amd64 1.0.29-0ubuntu5 [201 kB] Ign:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane-common all 1.0.29-0ubuntu5 Err:1 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane-common all 1.0.29-0ubuntu5 Undetermined Error [IP: 192.168.1.1 80] Err:2 http://archive.ubuntu.com/ubuntu focal/main amd64 libmysqlclient21 amd64 8.0.19-0ubuntu5 Undetermined Error [IP: 192.168.1.1 80] Err:3 http://archive.ubuntu.com/ubuntu focal/main amd64 libsnmp35 amd64 5.8+dfsg-2ubuntu2 Undetermined Error [IP: 192.168.1.1 80] Err:4 http://archive.ubuntu.com/ubuntu focal/main amd64 libsane amd64 1.0.29-0ubuntu5 Undetermined Error [IP: 192.168.1.1 80] Err:5 http://archive.ubuntu.com/ubuntu focal/universe amd64 libsane1 amd64 1.0.29-0ubuntu5 Undetermined Error [IP: 192.168.1.1 80] Err:6 http://archive.ubuntu.com/ubuntu focal/main amd64 sane-utils amd64 1.0.29-0ubuntu5 Undetermined Error [IP: 192.168.1.1 80] E: Failed to fetch http://archive.ubuntu.com/ubuntu/pool/main/s/sane-backends/libsane-common_1.0.29-0ubuntu5_all.deb Undetermined Error [IP: 192.168.1.1 80] E: Failed to fetch http://archive.ubuntu.com/login.asp Undetermined Error [IP: 192.168.1.1 80] E: Failed to fetch http://archive.ubuntu.com/login.asp Undetermined Error [IP: 192.168.1.1 80] E: Failed to fetch http://archive.ubuntu.com/login.asp Undetermined Error [IP: 192.168.1.1 80] E: Failed to fetch http://archive.ubuntu.com/login.asp Undetermined Error [IP: 192.168.1.1 80] E: Failed to fetch http://archive.ubuntu.com/login.asp Undetermined Error [IP: 192.168.1.1 80] E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? I am very overwhelmed with this problem plz help.