so i have managed to successfully install 64-bit 19.04 on my Mac Pro 1,1... everything seems to be working fine with one exception: nothing connected to the two additional SATA ports on the logic board is registered by Ubuntu. i can boot up in macOS (10.11.6) on a SSD attached to one of those ports, and while in macOS the ODD connected to the second port shows up, so it's clearly not a hardware issue.
has anyone else run into this problem? if so, have you found a solution?
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