Another black screen issue here. I thought I successfully installed Elementary on a mid-2010 iMac (after editing in grub to set nomodeset). It went through the install wizard and asked for my time zone and WiFi details. Then, it asked to reboot.
On reboot, I got
two ding three ring sounds (not the Mac chime, nor beeps) and a completely black screen. I can’t seem to hold down opt/alt to boot from another drive anymore.
Any ideas on how to progress? My guess is that the graphics card driver doesn’t work.
If nothing else, I’d like to at least be able to boot from USB and put OS X back on.
2020-12-11 Update: After rebooting by unplugging, then plugging the iMac back in, I was able to get into GRUB by hitting Esc during the Mac chime. I guess I wasn’t properly rebooting.
Those ringing sounds from the video were actually ElementaryOS sounds! They’re the sound it makes when it picks up a wifi printer.
Now I have a problem with not being able to boot without recovery mode. Normal booting still takes me to a blank screen. However, if I go to GRUB during boot, pick recovery mode, then select Resume from there, it reboots in such a way that I actually get into a working instance of ElementaryOS! But if I reboot again from there, I go back to a black screen.
What’s the difference from a normal startup or reboot and a recovery mode reboot? How can I get normal startup to behave like the recovery mode reboot?