I am using Plank. I’ve deleted the bottom default MATE panel. My Plank is configured transparent, bottom, auto hide, fill. This morning I found this entry in my Dell laptop syslog …
org.mate.panel.applet.MultiLoadAppletFactory[4783]: ** (mate-multiload-applet:4955): WARNING **: Failed to get pixmap 16779554,613,0
Dell laptop has UM 16.04.1 installed with MATE 1.14. I checked a default UM install in Virtual Box and did NOT find a similar message.
On my HP desktop UM 16.04.1 MATE 1.12 : I’ve deleted the bottom default MATE panel. My Plank is configured transparent, bottom, auto hide, fill. I found a similar message in syslog
Jul 26 14:54:46 HP-T org.mate.panel.applet.MateWeatherAppletFactory[3923]: ** (mateweather-applet:4190): WARNING **: Failed to get pixmap 16777498,1007,0
I haven’t noticed any visible symptoms on either system. I was investigating a request from @BenjaminNYC. My suspicion is this is somehow related to deleting the bottom MATE panel.