Can you post your /var/log/Xorg.0.log and Xorg.1.log ?
On Sun, 2025-09-07 at 08:34 -0400, Michael Campbell wrote:
Hi,
My apologies for the repeat of this message. I am resending to make
this a unique thread, as requested by Adrian and others.
Adrian, Jeroen, if creating a fresh message with a unique title
doesn't make this a unique thread, could you point me at the
requirements to do this please? Thanks!
--- repeated post ---
I have a late 2005 Power Mac G5 Quad running Debian 12 PPC64 with the
MintPPC64 layer on it. I have two Apple 20" Cinema displays connected
to the system via the two DVI ports supplied by my single nVidia
GeForce 6600 video card (supported by the "nouveau" driver).
Under Mac OS X (Sorbet) Leopard, both monitors are active and used as
one extended desktop. Under Mint/Debian, only one is in use.
I have researched extensively online and tried all sorts of
solutions, largely involving xrandr and xset. Nothing has worked so
far. xrandr reports two displays, which it names DVI-I-1 and DVI-I-2.
The usual prescription:
xrandar --output DVI-I-2 --auto
is accepted and executed without error, but the monitor stubbornly
stays off. Correction: the power light stays on, but the screen stays
off.
Constructions like:
xrandr --output DVI-I-1 --auto --output DVI-I-2 --auto --rightof DVI-
I-1
also executes without error, but there is no change in the screen...
it stays off.
The system understands that there is a second monitor... the mouse
cursor will disappear into the second one. If I set it as primary,
windows will open on that screen, but because it is off, I can't see
them. I have occasionally managed to snag one of them and drag them
back to the screen that IS on.
It is as if everything is working logically, but physically, nothing
is turning the screen on. The physical screen doesn't seem to be
connected to the logical one.
I am stumped at this point.
Any and all pointers much appreciated.
Regards,
Michael