I've had this same problem. Saving through the menu and restarting fixes it for me, but when it happens every few minutes, even that becomes annoying.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to inkscape in Ubuntu. https://bugs.launchpad.net/bugs/1336924 Title: after a period I can't use the keyboard inside inkscape window Status in Inkscape: New Status in inkscape package in Ubuntu: Confirmed Bug description: It doesn't matter if it's for typing inside a box text, to change values in numeric boxes (for width, etc) or to write a filename when saving. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: inkscape 0.48.4-3ubuntu2 ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 CurrentDesktop: LXDE Date: Wed Jul 2 22:09:33 2014 InstallationDate: Installed on 2014-06-23 (9 days ago) InstallationMedia: Lubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) SourcePackage: inkscape UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/inkscape/+bug/1336924/+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