Public bug reported: An Ubuntu system with multiple cpus corrupts the display while searching. This is reproducible via ssh as well as on a local terminal. I've seen this under Ubuntu 14.04.2 with emacs23 (23.4+1-4.1ubuntu1) and emacs24 (24.3+1-2ubuntu1).
Here's an askubuntu question with reproduction instructions and a screenshot: http://askubuntu.com/questions/418546/emacs-screen-drawing-issues-over-ssh 1. emacs ~/.bash_history 2. C-s cd (incremental search for "cd") 3. keep hitting C-s (aka jump to the next search result) This can be easily reproduced under VirtualBox, create a VirtualBox vm with two vcpus, search in emacs and terrible things happen. Reduce to one vcpu and everything's peachy keen. Martin Trojer posted a patch to bug-gnu-emacs mailing list which fixed it for me: https://lists.gnu.org/archive/html/bug-gnu-emacs/2015-03/msg00698.html https://github.com/martintrojer/emacs/commit/bdff1ff98d02f4307659c052d0b35a40a36f0706 This patch is attached. ** Affects: emacs24 (Ubuntu) Importance: Undecided Status: New ** Tags: trusty utopic ** Patch added: "Fixes emacs search display bug with multiple cpus" https://bugs.launchpad.net/bugs/1454869/+attachment/4397016/+files/emacs24-bug17497.diff -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to emacs24 in Ubuntu. https://bugs.launchpad.net/bugs/1454869 Title: emacs23 and emacs24 search display bugs on machines with multiple cpus Status in emacs24 package in Ubuntu: New Bug description: An Ubuntu system with multiple cpus corrupts the display while searching. This is reproducible via ssh as well as on a local terminal. I've seen this under Ubuntu 14.04.2 with emacs23 (23.4+1-4.1ubuntu1) and emacs24 (24.3+1-2ubuntu1). Here's an askubuntu question with reproduction instructions and a screenshot: http://askubuntu.com/questions/418546/emacs-screen-drawing-issues-over-ssh 1. emacs ~/.bash_history 2. C-s cd (incremental search for "cd") 3. keep hitting C-s (aka jump to the next search result) This can be easily reproduced under VirtualBox, create a VirtualBox vm with two vcpus, search in emacs and terrible things happen. Reduce to one vcpu and everything's peachy keen. Martin Trojer posted a patch to bug-gnu-emacs mailing list which fixed it for me: https://lists.gnu.org/archive/html/bug-gnu-emacs/2015-03/msg00698.html https://github.com/martintrojer/emacs/commit/bdff1ff98d02f4307659c052d0b35a40a36f0706 This patch is attached. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/emacs24/+bug/1454869/+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
