My experience (years old now) with a similar model was that the monitor mode must be set explicitely, perhaps to 1024x768/60Hz. The scan is fixed rate and if not in sync the screen stays dark. If it will help I could turn it on and see what is there.
On 25 Mar 2021, at 15:24, Claudiu Tănăselia wrote: > Hi, > > Thank you for your replies! Here's my /var/log/Xorg.0.log: > https://pastebin.com/6RWberfW > Let me know if I can offer you any more clues about this situation. > > Kind regards, > Claudiu. > > On Thu, Mar 25, 2021, at 08:57, Matthieu Herrb wrote: >> On Wed, Mar 24, 2021 at 11:03:14PM +0200, Claudiu Tănăselia wrote: >>> Hello, >>> >>> I've installed OpenBSD 6.8 on an iMac G3 (Summer 2000 edition) and there >>> was nothing unusual during install or post-install stage, I was able to >>> install and boot OpenBSD without an issue. >>> >>> However, when X (xenodm) starts, it ignores the built-in display. The >>> built-in display goes dark and if a second display is plugged-in via VGA >>> port, then that display is usable, however not the built-in display. Is >>> this a bug or a feature? xrandr only shows 1 monitor, even when the second >>> VGA monitor is plugged it. >>> >>> dmesg is available here: https://pastebin.com/TsEBjZNi >>> >> >> Hi, >> >> This is probably a bug, but I don't know what is causing it. We would >> need to see the contents of /var/log/Xorg.0.log to --maybe-- get some >> clues on what is happening. >> >> Also the xf86-video-r128 driver is lagging behind upstream versions >> for a mumber of years now. Initially I didn't upgrade it because >> upstream version where breaking on my macppc G4. I don't think I'v >> tried more "recent" ones like 6.11 or 6.12 though. If I find time for >> this, I may be able to send an update patch during the week end. >> >> -- >> Matthieu Herrb >> >
