15.10. ppc on iBook G4 bugs and general performance

[wolfman]

Did you follow this advice when creating your bootable media?:

Burn ISO's at the slowest possible speed

Hi all, as the title suggests, some and/or many problems with your installation can be avoided by burning the ISO file at the "SLOWEST POSSIBLE SPEED", most if not all burner apps will automatically choose the fastest speed available for your disk burner drive so it is important before you commit to burn a CD/DVD that you select the menu tab which controls the burn speed and select the lowest number on offer. Your burner drive may well support a burn speed of 20 X for DVD and 60 X for CD's a…

Did you try and run "dpkg" in recovery mode per the update guide?:

Ubuntu Mate Update Guide

These are my own setting preferences, use at your own risk!. AN IMPORTANT NOTE FOR LINUX BEGINNERS. WHEN YOU ARE IN RECOVERY MODE, THE KEYBOARD DEFAULTS TO US ENGLISH, IF YOU HAVE ANY OTHER LANGUAGE KEYBOARD OTHER THAN US ENGLISH, WHEN YOU TYPE "Y" (FOR "YES"), IT MIGHT SHOW UP AS A DIFFERENT LETTER, ON MY KEYBOARD I MUST PRESS THE "Z" KEY WHICH EQUATES TO "Y" AS I HAVE A GERMAN KEYBOARD, JUST PRESS "BACKSPACE" AND HIT A DIFFERENT KEY UNTIL YOU SEE THE "Y" SHOW UP!. Click on "Subscribe…