Zach Arace posted:
Hi all.
My beige G3 (266mhz/4 gig/160 MB RAM) was recently upgraded to Panther. Runs fine, except that the display randomly turns off. I am using a VGA monitor hooked up to the onboard video via a Mac-to-VGA adapter. As mentioned, it just goes dark randomly (usually when I'm clicking something). If I turn the monitor off and on again, it stays dark. I have to restart the PowerMac to get it to "display" again.
Sleep and all Energy Star settings are set to Never.
Anybody know what this is? Would like to get it resolved ASAP-I'm scared whenever I use the beige because I don't know if it will turn off in the middle of something important ;-)
Charles Meyerson replied:
We have exactly the same problem, and I haven't found any explanation -- other than the vague "video problems with G3s upgraded to Panther (which they're not supposed to run anyway)." So please let us know if you come up with an answer!
Sven Radke posted this 12/24/04 on the UnsupportedOSX mailing list, which is where these questions belong. If you are using Panther on a Beige, you should be on UnsupportedOSX. The BeigeG3 is only supported thru Jaguar, which Charles notes above. You can search the UnsupportedOSX archives or G-List here:
http://www.mail-archive.com/
Sven wrote:
I believe I do.<have an answer> This would be the RagePro, where the ROM is the 77D.45F1 version? If so, then yes. I use XPF 3.0b1, check the Patched RagePRo option, and boot. I used to have the black screen problem but that seems largely to have been solved by taking the advice of a friend in the same boat. To quote him liberally:
ok, I've found the cause of the screen goes black problem.
Check and see if your kernel spews out the following messages while booting (you can do this by typing "dmesg" once it's booted):
extension "com.apple.iokit.IOGraphicsFamily" cannot be found can't determine immediate dependencies for extension com.macsales.iokit.OpenG3AIODisplay Can't determine dependencies for com.macsales.iokit.OpenG3AIODisplay. extension "com.apple.iokit.IONDRVSupport" cannot be found can't determine immediate dependencies for extension com.macsales.iokit.GossamerNDRVSupport Can't determine dependencies for com.macsales.iokit.GossamerNDRVSupport. Couldn't alloc class "OpenG3AIODisplay" Couldn't alloc class "GossamerNDRVSupport"
I noticed that I get the screen goes black problem when these messages are present and I don't when they aren't.
If you get the messages, it means that the system doesn't know enough about these XpostFacto kernel extensions. To teach the system, do the following as root:
cd /System/Library/Extensions kextcache -k GossamerNDRVSupport.kext kextcache -k OpenG3AIODisplay.kext
and reboot.
Once booted, those messages should no longer be present.
Do not select the "use old NDRV" option in xpostFacto. Only select the "use PatchedRagePro" option. But make sure to modify the options before doing the kextcache thing because it seems that the problem occurs when XpostFacto makes changes in the /System/Library/Extensions folder. I think you can emulate the problem by simply doing "touch /System/Library/Extensions".
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