Here on Quad G5 Xorg crash totally on jessie and it is not usable ... sed the Wheezy was working really good. The same issue i face on Lubuntu 15.04 and Ubuntu Mate too. No problems on Open Suse 13.2 I had been reported the issue of Xorg to xorg devs with a screenshot of the issue and crash.
Luigi Burdo Date: Tue, 28 Apr 2015 20:14:30 +0200 From: christ...@chw.onl Subject: Debian Jessie with openbox on iBook G4 crashing when firmware-linux-nonfree is installed To: debian-powerpc@lists.debian.org Hi! I have upgraded my Debian Wheezy to Jessie on my iBook G4 following the upgrade manual from Debian which is really great by the way. After that I wasn't able to type the username in the Loginpanel (slim). I was able to change to the command line with CTRL+ALT+F1 and starting a openbos session with "startx". Openbox crashes then after ii try to resize a window.With firmware-linux-nonfree not installed it works without crashing once. There are also two kernel modules that can't be loaded. ppdev andapm_emu.I decied to make a fresh install. Same behaviour. I made a fresh install on another iBook G3. Same behaviour.Then I tried uninstalling packages. firmware-linux-nonfree was the reproducable cause. After reinstalling it crashes again. When running the system without firmware-linux-nonfree I have no sound. So I decided to help myself with a 10$ USB DAC from EBAY. It worked fine as workaround. Does anyone else had also the same problem? CheersChris