can confirm under Ubuntu 20.04 with Spyder 3 express as well. Hope the attached log messages from 'dmesg' and 'journalctl -b 0' help. Shell output:
$ gnome-control-center (gnome-control-center:6495): color-cc-panel-WARNING **: 23:54:00.320: calibration failed with code 1: no sensor->get_sample (gnome-control-center:6495): color-cc-panel-WARNING **: 23:54:11.074: failed to start calibrate: failed to calibrate (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.301: cd_profile_has_access: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.301: cd_profile_get_filename: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.301: cd_profile_get_id: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): color-cc-panel-WARNING **: 00:00:02.301: (null) is not usable by this user (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.348: cd_profile_has_access: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.348: cd_profile_get_filename: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.348: cd_profile_get_id: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): color-cc-panel-WARNING **: 00:00:02.348: (null) is not usable by this user (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.961: cd_profile_has_access: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.961: cd_profile_get_filename: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): libcolord-CRITICAL **: 00:00:02.961: cd_profile_get_id: assertion 'CD_IS_PROFILE (profile)' failed (gnome-control-center:6495): color-cc-panel-WARNING **: 00:00:02.961: (null) is not usable by this user (gnome-control-center:6495): color-cc-panel-CRITICAL **: 00:27:07.688: cc_color_calibrate_setup: assertion 'calibrate->device_kind != CD_SENSOR_CAP_UNKNOWN' failed Speicherzugriffsfehler (Speicherabzug geschrieben) ** Attachment added: "dmesg" https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1719143/+attachment/5516416/+files/dmesg.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1719143 Title: Unable to calibrate monitors through Gnome Control Center->Color [calibration failed with code 1: no sensor->get_sample] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1719143/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
