Log time: 2014-03-21 17:54:59.433210 Starting pkgProblemResolver with broken count: 2 Starting 2 pkgProblemResolver with broken count: 2 Investigating (0) linux-headers-generic [ amd64 ] < 3.13.0.18.22 -> 3.13.0.19.23 > ( devel ) Broken linux-headers-generic:amd64 Depends on linux-headers-3.13.0-19-generic [ amd64 ] < none -> 3.13.0-19.39 > ( devel ) Considering linux-headers-3.13.0-19-generic:amd64 1 as a solution to linux-headers-generic:amd64 1 Holding Back linux-headers-generic:amd64 rather than change linux-headers-3.13.0-19-generic:amd64 Investigating (0) usb-modeswitch-data [ amd64 ] < 20120815-2 -> 20131113-1 > ( comm ) Broken usb-modeswitch-data:amd64 Breaks on usb-modeswitch [ amd64 ] < 1.2.3+repack0-1ubuntu3 > ( comm ) (< 1.2.7) Considering usb-modeswitch:amd64 3 as a solution to usb-modeswitch-data:amd64 1 Holding Back usb-modeswitch-data:amd64 rather than change usb-modeswitch:amd64 Investigating (0) linux-generic [ amd64 ] < 3.13.0.18.22 -> 3.13.0.19.23 > ( kernel ) Broken linux-generic:amd64 Depends on linux-headers-generic [ amd64 ] < 3.13.0.18.22 -> 3.13.0.19.23 > ( devel ) (= 3.13.0.19.23) Considering linux-headers-generic:amd64 1 as a solution to linux-generic:amd64 0 Removing linux-generic:amd64 rather than change linux-headers-generic:amd64 Try to Re-Instate (1) linux-headers-generic:amd64 Try to Re-Instate (1) usb-modeswitch-data:amd64 Done MarkUpgrade() called on a non-upgrable pkg: 'brasero' ERROR:root:Upgrading 'brasero' failed