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Bug#449055: cdebconf-newt-udeb: display corruption with multiselect over progress bar



Package: cdebconf-newt-udeb
Version: 0.125

As shown in the screenshots debconf_displcorr1 and debconf_displcorr2 at
http://people.debian.org/~fjp/tmp/d-i/, there is some display corruption 
when the XOrg screen resolution multiselect dialog is displayed on top of a 
progress bar. After the dialog, the progress bar remains corrupted. The 
display is OK again after the progress bar is stopped.

The corruption is only present if the installer is booted with vga=791, not 
with the normal resolution. I can reproduce this reliably when installing 
in VirtualBox.

If you swap between the the 1 and 2 images, it can be seen that the 
corruption is caused by remnants of the other dialog; i.e. it looks like 
the screen is not completely repainted for some reason.

As can be seen from debconf_displcorr1_etch, this problem did not yet exist 
in Etch.

Possibly this is not a cdebconf bug, but an issue in newt (or maybe even 
elsewhere). cdebconf seems most likely though.

Cheers,
FJP

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