grey lines appear around X desktop border

[Rocko]

In certain situations, grey lines appear around the X desktop window and do not disappear until X is restarted.

The easiest way to reproduce this is to select a file on the desktop and press F2 to rename it - the lines appear instantly.

Other ways to reproduce it include changing screen resolution and video modes (see below).

This happens both in a VirtualBox VM running Lucid (I can see it in both full-screen and windowed mode) and on my main laptop. On the laptop, it happens whether I use the nvidia or the nouveau driver.

Other information about causing it with mode changes with nvidia-settings are:

When I use nvidia-settings to change screen resolution in Lucid, grey lines (perhaps two pixels wide) appear around the border of the X window. For instance, with left and right monitors configured, this means I get grey lines around all but the right edge of the left monitor and all but the left edge of the right monitor.

The lines appear as soon as the resolution change takes place (while nvidia-settings is asking you to confirm the change) and persist if you cancel the change and return to the previous mode.

The lines also appear if you have two monitors configured, physically remove one, choose 'Detect Displays' and apply the changes with no change in resolution for the default monitor.

Restarting the X session is required to remove the lines.

Note that the same nvidia drivers (195.36.03) do not exhibit this behaviour in Karmic with the 2.6.33, 2.6.32, or 2.6.31 kernels.

ProblemType: Bug
Architecture: amd64
CheckboxSubmission: 1bd8e90541d49b96c13cbfcc9baf103b
CheckboxSystem: d00f84de8a555815fa1c4660280da308
Date: Sun Feb 28 09:49:38 2010
DistroRelease: Ubuntu 10.04
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100224.1)
NonfreeKernelModules: nvidia
Package: nvidia-current 195.36.03-0ubuntu1
ProcEnviron:
 PATH=(custom, user)
 LANG=en_AU.utf8
 SHELL=/bin/bash
SourcePackage: nvidia-graphics-drivers
Uname: Linux 2.6.33-generic x86_64

[Rocko (rockorequin)]

It doesn't always require a change of resolution. I just noticed the lines appear after I pressed F2 to rename a desktop file. The name was unusually long and went off the screen in case that's relevant.

[Rocko (rockorequin)]

Also, screenshots don't show the grey lines, so it looks more like it's a rendering problem, ie X doesn't intend to show the lines. Changing the desktop background has no effect, either - the lines remain until I restart X.

[Rocko (rockorequin)]

Changing package to xserver xorg, because I can reproduce it on a VirtualBox VM running Lucid in full screen mode by pressing F2 to rename a file on the desktop.

[Rocko (rockorequin)]

The attached screenshot shows a VM running Lucid. In the top screenshot, X has just started up and there are no grey lines. In the screenshot underneath, I have just pressed F2 to change a filename. The most obvious grey line is the one that has appeared on the left (zooming in makes it more apparent).

[Nick Stevens (sirnickylee)]

I too have noticed this issue cropping up over the past couple of days. In my case I was switching themes when it occurred.

[Rocko (rockorequin)]

Why did you change it to the nvidia-graphics-drivers-180 package? It happens also with the nouveau and VirtualBox graphics drivers.

[Nick Stevens (sirnickylee)]

I'm not even on Nvidia hardware, I'm using the Radeon driver.

[Rocko (rockorequin)]

And I can reproduce it from the alpha 3 live cd, where there is no chance the nvidia drivers are loaded.

Therefore I'm changing it back to xserver-xorg.

[Rocko (rockorequin)]

nvidia-graphics-drivers-180 is clearly the wrong package to assign this to. The bug occurs when the driver is not loaded.

[Rocko (rockorequin)]

Bryce must be running a bot that keeps inappropriately reassigning this bug.

I'd say something in Launchpad is set to auto-reassign all xserver-xorg bugs to nvidia-graphics-drivers-180, because I tried running "ubuntu-bugs xserver-xorg" from a VM, and it automatically reported against nvidia-graphics-drivers-180. They weren't even installed on the machine I ran it on!

So I'm reassigning to gdm in the hope a carbon-based lifeform will read this bug...

[Sebastien Bacher (seb128)]

Thanks for the bug report. This particular bug has already been reported, but feel free to report any other bugs you find.

[Sebastien Bacher (seb128)]

ups, sorry for the bug noise there

[LiohMoeller (liohmoeller)]

This problem also occurs on my non-virtualized environment.

Got an Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller

Best Regards
Marcus

[tekstr1der (tekstr1der)]

This bug accurately describes and is a duplicate of Bug #507263