screen corruption in vertical taskbar with background image

[Hein Zelle]

Binary package hint: kicker

If the kde panel is put on the right side of the screen (vertically) instead of at the bottom, screen corruption occurs in the taskbar applet. This occurs over the icon and the text of the "tasks". A screenshot is available at http://www.icce.rug.nl/~hein/corrupt-taskbar.png , look at the top terminal and also at the emacs task (the latter is difficult to see). This occurs reliably on two different ubuntu systems running kde, both updated to the latest 7.04 version. It already occurred in the 6.10 version as well. The corruption is random and changes when switching active tasks or moving the mouse over the taskbar.

This may be a bug in the package 'kicker', but I don't see how I can select that in the bug tracking system.

[Adric Riedel (adric-riedel)]

Confirmed on Kubuntu Feisty.

I get the exact same thing; it seems to happen when I have more than three vertically-stacked items. See the attachment, on the right-hand side of the screen.

[Adric Riedel (adric-riedel)]

I have access to a Fedora Core 4 machine, and I have not been able to reproduce this bug on their KDE installation.

[Adric Riedel (adric-riedel)]

I turned off 'background image' (Configure panel->Appearance->Enable Background Image) and the problem seems to have vanished. Of course, now my kickers look blank and ugly, but the strange garbled text vanished (see attached screenshot).

They reappeared when I turned the background image back on.

[Hein Zelle (zelle)]

Adric Riedel wrote:

> I turned off 'background image' (Configure panel->Appearance->Enable
> Background Image) and the problem seems to have vanished. Of course,
> now my kickers look blank and ugly, but the strange garbled text
> vanished (see attached screenshot).
>
> They reappeared when I turned the background image back on.

I can confirm that turning off the background image makes the problem
go away. It reappears when the background image is turned on again.

Regards,
 Hein Zelle

--

  dr. ir. Hein Zelle

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[Adric Riedel (adric-riedel)]

I haven't been able to reproduce this bug on (specifically) KDE 3.5.3-0.2.fc4 on Red Hat Fedora 4, or KDE 3.5.5-0.2.fc5 on Red Hat Fedora 5. So, something they did (or didn't) solves the issue, or something in KDE 3.5.6 broke.

[Marco Maini (maini10)]

I tested it with KDE 3.5.7 and the problem is confirmed.

[psylem (subnetjet)]

Fresh install of Gutsy Kubuntu from a DVD and this problem still occurs. Everything is default, I have simply dragged the default kicker from the bottom to the left side of the screen and am getting the same issue as described above.

I switched to Kubuntu because Gnomes support for vertical kickers is really bad, and I prefer them on widescreens with low vertical resolution as you get on laptops. Shame that this is happening, well I guess we just have to hope a developer with a passion for vertical kickers gets around to looking into it. For now the workaround described above will suffice.

[Kieran Hogg (xerosis)]

Looks to be fixed now, marking as Fix Released. If anyone can still see this issue, please reopen.

[NetForces (courchea)]

I experience the same problem on an HP nw9440 laptop running the latest Kubuntu with the latest envyng nvidia drivers.

Attached is a picture of a corrupted display. Just passing the mouse over corrects it sometimes.

[NetForces (courchea)]

Here is the same screenshot as above but once I passed the mouse over the panel.

[psylem (subnetjet)]

NetForces, this looks like a different bug, I can confirm that bug 113607 was definitely fixed.

The kicker corruption as described originally looks totally different from your screenshot, and mousing over would not resolve it.

You could try disabling the the background image of the kicker, as specified in Adric Riedel's comment on 2007-05-24. If it is a related issue then this will temporarily resolve the problem.