Gustav is correct. Editing the file /usr/bin/xdg-settings as described in the bug report has fixed the problem for me in 15.10. Perhaps this will help someone at least eliminate the annoyance for now.
The offending line for me is line #198 command="`grep -E "^Exec(\[[^]=]*])?=" "$file" | cut -d= -f 2- | sed -e 's/ .*$//'`" rectified to: command="`grep -E "^Exec(\[[^]=]*])?=" "$file" | cut -d= -f 2- | sed -e 's/ .*$//' | head -n 1`" After making this change, you can set the default browser within the Chrome settings as Nikita mentioned, and it will succeed. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xdg-utils in Ubuntu. https://bugs.launchpad.net/bugs/1509139 Title: Shows "Chromium isn't your default browser" since 15.10. Status in Chromium Browser: New Status in chromium-browser package in Ubuntu: Confirmed Status in google-chrome package in Ubuntu: Confirmed Status in xdg-utils package in Ubuntu: Confirmed Bug description: Since the 15.10. upgrade Chromium shows on every launch "Chromium isn't your default browser", even when i select "Set as default" or "Don't ask again". Chromium is set as default application for "Web" at System Settings -> Details -> Default Applications. Version 45.0.2454.101 Ubuntu 15.10 (64-bit) To manage notifications about this bug go to: https://bugs.launchpad.net/chromium-browser/+bug/1509139/+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
