This bug appears only with "GNOME Classic" session. How to repeat:
1. Install Ubuntu 17.10 2. apt install gnome-shell-extensions 3. reboot 4. login choosing "GNOME Classic" session 5. open terminal 6. do "notify-send foobar" 7. unreadable notification box appears Thus, I was able to get rid of this problem by choosing "GNOME on Xorg" session. ** Package changed: gnome-shell (Ubuntu) => gnome-shell-extensions (Ubuntu) ** Summary changed: - Notification message colour unreadable after upgrade to artful + Notification message colour unreadable with "GNOME Classic" session -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1719106 Title: Notification message colour unreadable with "GNOME Classic" session Status in gnome-shell-extensions package in Ubuntu: New Bug description: After upgrading my Ubuntu GNOME 17.04 system to Ubuntu 17.10 the notification message window colour is unreadable. It is black text on very dark grey background. See attached screenshot. To make sure that it does not come from my settings, I created a new user account with empty home directory and logged in using that user account. The issue still remains. I am not sure if the notification messages are produced by the gnome- shell package. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.26.0-0ubuntu1 ProcVersionSignature: Ubuntu 4.12.0-13.14-generic 4.12.10 Uname: Linux 4.12.0-13-generic x86_64 NonfreeKernelModules: nvidia_uvm wl nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: GNOME-Classic:GNOME Date: Sat Sep 23 19:31:17 2017 DisplayManager: gdm3 GsettingsChanges: b'org.gnome.shell' b'had-bluetooth-devices-setup' b'true' b'org.gnome.desktop.interface' b'gtk-im-module' b"'gtk-im-context-simple'" InstallationDate: Installed on 2015-06-06 (839 days ago) InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Release amd64 (20150422) JournalErrors: Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system. Users in the 'systemd-journal' group can see all messages. Pass -q to turn off this notice. No journal files were opened due to insufficient permissions. SourcePackage: gnome-shell UpgradeStatus: Upgraded to artful on 2017-09-20 (2 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extensions/+bug/1719106/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp