until preceding updates ( yesterday mar 19) wallpaper was fine. after today (mar 20) updates wallpaper is dark gray. try change from Files > Pictures > Select jpg > set as wallpaper or from change desktop background - appearance: some pictures results in a dark gray background, other in dashed picture as from attachment.
System information report, generated by Sysinfo: 3/20/2015 8:33:41 AM http://sourceforge.net/projects/gsysinfo SYSTEM INFORMATION Running Ubuntu Linux, the Ubuntu 15.04 (vivid) release. GNOME: 3.14.1 (Ubuntu 2015-03-18) Kernel version: 3.16.0-24-generic (#32-Ubuntu SMP Tue Oct 28 13:07:32 UTC 2014) GCC: 4.9.2 (x86_64-linux-gnu) Xorg: 1.16.2.901 (1.16.3 RC 1) (17 February 2015 01:38:39PM) (17 February 2015 01:38:39PM) Hostname: corrado-vivid64 Uptime: 0 days 0 h 50 min ** Attachment added: "Screenshot from 2015-03-20 08:22:06.png" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1404247/+attachment/4350550/+files/Screenshot%20from%202015-03-20%2008%3A22%3A06.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1404247 Title: Vivid Wallpaper hashed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1404247/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs