This is more visible. When selecting the window, the problem disappears.
Some refresh issue?
** Attachment added: "sshot-3.png"
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Compiz related bug (Endianness bug somewhere)
Status in xorg package in Ubuntu:
I suspect a endianness problem in this BigEndian Machine (Apple PowerBook G4
with ATI Radeon Mobility 9700). The same architecture (bigEndian) shows no this
specific issue on PowerMac G5 Quad with PCI-Express ATI Radeon HD4670 with VGA
BIOS (not powerpc flashed card).
The problem seems to be a screen changing resolution or similar having
Compiz activated. If I switch the screen resolution on this laptop,
the garbage on the screen is more visible than using NO COMPOSITE
Marco Mate Display Manager.
The problem is enhanced using a second monitor attached to a DVI
connector on this laptop.
Can be easly reproduced.
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-116.140-powerpc-smp 4.4.98
Uname: Linux 4.4.0-116-powerpc-smp ppc
Date: Fri Feb 23 14:01:47 2018
InstallationDate: Installed on 2018-02-21 (2 days ago)
InstallationMedia: Ubuntu-MATE 16.04.1 LTS "Xenial Xerus" - Release powerpc
UpgradeStatus: No upgrade log present (probably fresh install)
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