Yes, I agree this sounds like it's not gnome-terminal at fault. Typically issues like these are video driver problems and tend to be hardware-specific. The fact that several people are seeing it on different graphics cards and different drivers is likely coincidental. A lot of different kinds of graphics bugs can result in the generic symptom "slow with visual corruption".
Unfortunately this bug report is not actionable as written. It's missing the X logs and so forth. There does seem to be a definite issue pertaining to the -nvidia driver, perhaps specific to NVIDIA 8xxx cards, which occurs when an external monitor is configured a certain way. This is bug #877438. If your situation matches those conditions, you can consider that your issue is the same as that bug. Indeed, the original poster's setup appears to match this, so I'm going to dupe this bug to that one. For those of you who experience similar symptoms but are using a different video driver and/or different graphics cards, or see it with just a single monitor, please file a new bug. Run `ubuntu-bug xorg` to report it, which will collect logs and so on. Also, if you see visual corruption please also include a photo of the screen showing the corruption, as the size and pattern of the corruption often clues developers into where in the driver the failure is coming. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/850649 Title: gnome-terminal extremely slow and display buggy Status in “gnome-terminal” package in Ubuntu: Confirmed Bug description: After the update to oneiric the gnome-terminal appears to be slow and display is sometimes buggy: * changing between windows and tabs is slow although other applications (like chromium) are not affected * sometimes the display is not updated and some parts (exactly on character box boundaries) of the terminal just show the background ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: gnome-terminal 3.0.1-0ubuntu3 ProcVersionSignature: Ubuntu 3.0.0-11.18-generic 3.0.4 Uname: Linux 3.0.0-11-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 1.23-0ubuntu1 Architecture: amd64 Date: Thu Sep 15 08:28:30 2011 EcryptfsInUse: Yes ExecutablePath: /usr/bin/gnome-terminal InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007) SourcePackage: gnome-terminal UpgradeStatus: Upgraded to oneiric on 2011-09-01 (13 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/850649/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
