Flickering screen (live cd session on PPC)

[gegadeath]

Hi everybody,
I've been attempting to install ubuntu on a Mac PowerBook G4 for a while. My problem is once the cd (witch is a PPC bootable version of ubuntu 7.10) boots an optional boot menu appears, and when i type live the system starts to load and after 3 or 4 seconds the screen turns black and start flickering. Let me tell you that I tried out all the menus options (nosplash, ofonly..etc)

What should I do please ?!

[gegadeath]

hello folks;

It seems like my problem has no solution since nobody replied. Could you please confirm that to me, thanks !

[311005901]

...My problem is once the cd (witch is a PPC bootable version of ubuntu 7.10) ...

Have you tried Jaunty yet? The newer version of Ubuntu may solve your problem.

[aporeg]

hi

i have the same problem
after installing ubuntu 9 on my Apple PowerBook G4 (PowerPC G4 500MHz, 512MB RAM

Well i have to say that, first i try to install with the desktop cd and when i was confronted with the flicker issue i downloaded the alternate cd with that i was able to install ubuntu,well the boot up process went fine ,i even hear the ubuntu startup sound ,but the display screw up in different colours

i then try Ctrl + Alt + F2 to get an command shell ,and then sudo su to get root rights
after that nano /etc/X11/xorg.conf and i saw NOTHING xorg.conf file was empty

i the try dpkg-reconfigure xserver-xorg and thats where i stuck right now ,i have to figure it out what i have to put there


if i know more i will post it

[aporeg]

ok now i have found this xorg.conf in an suse forum

Option "DPMS"
Option "PreferredMode" "1280x854"
VendorName "APPLE"
VertRefresh 50-70
UseModes "Modes[0]"
EndSection


Section "Modes"
Identifier "Modes[0]"
EndSection


Section "Screen"
DefaultDepth 24
SubSection "Display"
Depth 15
Modes "1280x854" "1280x800" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 16
Modes "1280x854" "1280x800" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 24
Modes "1280x854" "1280x800" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
SubSection "Display"
Depth 8
Modes "1280x854" "1280x800" "1280x768" "1280x720" "1024x768" "1280x600" "1024x600" "800x600" "768x576" "640x480"
EndSubSection
Device "Device[0]"
Identifier "Screen[0]"
Monitor "Monitor[0]"
EndSection


i used this ,the flicker stops i have now vertical color lines in the left corner
problem still not solved,i will post more

[gegadeath]

thnx for ur replies guys, i appreciate that, I will download end try to install jaunty and then tell u if things go well. thanx again !