[Pkg-lxde-maintainers] Bug#844241: lxde-common: should use wallpaper_mode=crop for pcmanfm to avoid sqashed background images

[Wolfgang Schweer]

Package: lxde-common
Version: 0.99.1-1
Severity: normal
User: debian-edu at lists.debian.org
Usertags: debian-edu 

Hi,

while testing Debian Edu Stretch artwork with the LXDE desktop we saw a 
squashed background image; see:

https://jenkins.debian.net/job/g-i-installation_debian-edu_stretch-daily-netinst_standalone_lxde/32/

as opposed to Xfce showing the image as it should be:

https://jenkins.debian.net/job/g-i-installation_debian-edu_stretch-daily-netinst_standalone_xfce/47/

Same way the squashed stock Debian 8 lines image is shown on a monitor with 
4:3 aspect ratio, so this is nothing Debian Edu specific.

It seems to be that the LXDE setting for pcmanfm is causing it.

From /etc/xdg/pcmanfm/LXDE/pcmanfm.conf:

[desktop]
wallpaper_mode=1
wallpaper=/etc/alternatives/desktop-background
desktop_bg=#000000
desktop_fg=#ffffff
desktop_shadow=#000000


IMO the setting should rather be 'wallpaper_mode=crop'.

According to man pcmanfm 'crop' means 'stretch and crop to fill 
monitor', which seems to be a better fit.

Regards,

Wolfgang
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