gmplayer cannot be started at Ubuntu 18.04

[psl]

Ubuntu 18.04, amd64, fresh install

```
$ gmplayer
MPlayer 1.3.0 (Debian), built with gcc-7 (C) 2000-2016 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Gtk-Message: 01:32:33.570: Failed to load module "canberra-gtk-module"
Error in skin config file at line 6: PNG read error in /usr/share/mplayer/skins/default/main
Config file processing error with skin 'default'

Exiting... (Fatal error)
```

https://askubuntu.com/questions/783489/cant-use-mplayer-on-16-04-lts-x64?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa

[psl (slansky)]

I followed the advice and converted PNG files to PNG24, this is the procedure:

root@test:/usr/share/mplayer/skins/clearplayer# file *png
button_forward.png: PNG image data, 39 x 126, 8-bit colormap, non-interlaced
button_load.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_next.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_pause.png: PNG image data, 39 x 126, 8-bit colormap, non-interlaced
button_play.png: PNG image data, 39 x 126, 8-bit colormap, non-interlaced
button.png: PNG image data, 39 x 126, 8-bit colormap, non-interlaced
button_prev.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_rewind.png: PNG image data, 39 x 126, 8-bit colormap, non-interlaced
button_stop.png: PNG image data, 39 x 126, 8-bit colormap, non-interlaced
font.png: PNG image data, 171 x 48, 8-bit colormap, non-interlaced
main.png: PNG image data, 380 x 115, 8-bit colormap, non-interlaced
mute.png: PNG image data, 10 x 51, 8-bit colormap, non-interlaced
pos.png: PNG image data, 27 x 45, 8-bit colormap, non-interlaced
sub.png: PNG image data, 372 x 286, 8-bit/color RGB, non-interlaced
vol.png: PNG image data, 18 x 42, 8-bit colormap, non-interlaced
waves.png: PNG image data, 6 x 154, 8-bit colormap, non-interlaced

root@test:/usr/share/mplayer/skins/clearplayer# for FILE in *.png ; do sudo convert $FILE -define png:format=png24 $FILE; done

root@desk:/usr/share/mplayer/skins/clearplayer# file *png
button_forward.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_load.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_next.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_pause.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_play.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_prev.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_rewind.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
button_stop.png: PNG image data, 39 x 126, 8-bit/color RGB, non-interlaced
font.png: PNG image data, 171 x 48, 8-bit/color RGB, non-interlaced
main.png: PNG image data, 380 x 115, 8-bit/color RGB, non-interlaced
mute.png: PNG image data, 10 x 51, 8-bit/color RGB, non-interlaced
pos.png: PNG image data, 27 x 45, 8-bit/color RGB, non-interlaced
sub.png: PNG image data, 372 x 286, 8-bit/color RGB, non-interlaced
vol.png: PNG image data, 18 x 42, 8-bit/color RGB, non-interlaced
waves.png: PNG image data, 6 x 154, 8-bit/color RGB, non-interlaced
root@test:/usr/share/mplayer/skins/clearplayer#

I can start gmplayer now, issue fixed!

$ gmplayer
MPlayer 1.3.0 (Debian), built with gcc-7 (C) 2000-2016 MPlayer Team
do_connect: could not connect to socket
connect: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.
Gtk-Message: 01:42:09.749: Failed to load module "canberra-gtk-module"
Sk...

[Ian Molton (spyro2)]

Confirmed on 18.04 and the above fix (although I changed the path to /usr/share/mplayer/skins/default on my system) worked for me.