displaying and mouse calibration problems

[Jens Friedrich]

Binary package hint: thunderbird

Thunderbird often doesn't target the correct mouse pointer position. You've to direct the mouse pointer some pixel more up to catch e.g. one button in the main tool bar or scroll through a mail in preview mode.
Trying to reset the window by restoring and maximizing the main window title bar, menu bar and the window itself running completly out of your control.

Only possibility ALT+A4 and restarting thunderbird to work with it.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: thunderbird 3.1.10+build1+nobinonly-0ubuntu0.11.04.1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
Architecture: i386
Date: Sun May 8 10:57:06 2011
ProcEnviron:
 LANGUAGE=de_DE:en
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: thunderbird
UpgradeStatus: Upgraded to natty on 2011-04-29 (9 days ago)

[Jens Friedrich (dj-jeff)]

Just reproduced the bug. See attached screenshot with mouse position targeting the "Delete" button in the main toolbar.

[Christian Andrade (tumbes2000)]

I have the same bug. It tends to happen when I have opened a web browser in the same workspace (usually Chromium) and then bring thunderbird back to the top.

When the bug occurs a black bar is produced below the top menu bar, so thunderbird looks like it has been "pushed" down visually, but the mouse point is still reacting as if the blank bar is absent.

I have tried re-minimizing thunderbird to see if that would reverse the problem, but that method is ineffective. The only way to reverse the problem is to close thunderbird and reopen. This has become a daily issue for me.

Ubuntu 11.04 64 bit, Thunderbird 3.1.10, IMAP with two accounts.

[Jens Friedrich (dj-jeff)]

I've opened Mozilla Firefox 4.x on my workspace while running Thunderbird. Probably you're also using libnotify addon like me?
I get this problem often on clicking the notification applet showing new mails by the addon.

Another stupid workaround for some time is restoring and maximizing Thunderbird window.

Don't know wheather this is a Thunderbird specific or Unity feature problem. Probably it could be a Netbook resolution specific problem.
Unfortunately, there's currently no developer who says something about in this bug report.

[Christian Andrade (tumbes2000)]

I recently switched to using evolution instead of thunderbird as my default email client and I am getting the exact same issue. Again generally with the use of Chromium in the same workspace, I get this extra black"bar" that causes the mouse pointer not to line up correctly . So if you want to click a button you have to click about 1/4 inch above the displayed button. Since I get this error in evolution as well it might be an issue with the Unity interface.

[Rocko (rockorequin)]

I agree - I think it's actually an issue with unity/compiz. I also see this sometimes in full-screen Firefox. What appears to be happening is that unity thinks it needs to display a normal window titlebar when in fact it is using the global menu. The black bar at the top of the window is the missing titlebar and the mouse appears to be offset by this amount.

[Rocko (rockorequin)]

Also, I find that un-maximizing and maximizing the thunderbird (or firefox or whatever) window is a workaround that resets the way unity/compiz draws the window - you don't necessarily need to close and restart thunderbird.

[Eugene Romanenko (eros2)]

Maybe same bug - https://bugs.launchpad.net/ubuntu/+source/unity/+bug/1321870

[Paul White (paulw2u)]

We are sorry that we do not always have the capacity to review all reported bugs in a timely manner. You reported this bug some time ago and there have been many changes in Ubuntu and Thunderbird since that time.

Do you still see a problem related to the one that you reported in a currently supported version of Ubuntu? Please let us know if you do and in which version of Ubuntu otherwise this report can be left to expire in approximately 60 days time.

Thank you for helping make Ubuntu better.

Paul White
[Ubuntu Bug Squad]

[Launchpad Janitor (janitor)]

[Expired for thunderbird (Ubuntu) because there has been no activity for 60 days.]